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A L M Engineering & Instrumentation Private Limited
A L M Engineering & Instrumentation Private Limited


Differential Pressure

Leading Wholesale Trader of digital differential pressure gauge, aerosense differential pressure gauge, wet differential pressure transmitter, differential pressure indicator, minihelic differential pressure gauge and compact differential pressure transmitter from Mumbai.

Digital Differential Pressure Gauge

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Digital Differential Pressure Gauge
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Approx. Rs 5,500 / PieceGet Latest Price

Product Details:
BrandALM
Model No.CDPI Digital
Accuracy0.5%
Display typeRed LED 7 segment Display
Digits in display4 digit
Display size0.5 inch
Output range4-20mA

Aerosense Differential Pressure Indicator/Transmitter with circular standard Differential Pressure Gage cut out.

Features:
  • Built-in High and Low Buzzer Alarm for process set parameter
  • Violation with Acknowledgment key
  • Unit selectable in mm WC /Pascal

Applications:

  • Pharma Cleanrooms
  • HVAC
  • Environmental
  • Pharma Machinery
  • Across filters
  • Hospital violation rooms
  • Operation theatres & laboratories

Advantages:
  • Precision of measurement in HVAC duct pressure application makes this instrument suitable for optimization of energy & thereby its conversation is ventilation systems
  • Analog Output & RS-485 Communication lead to easy integration with Variable frequency drives & SCADA/BMS systems, AHUs.
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Aerosense Differential Pressure Gauge

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Aerosense Differential Pressure Gauge
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Approx. Rs 2,200 / PieceGet Latest Price

Product Details:
BrandAerosense
Accuracy2% of FS
Case materialDie cast Aluminium
Diaphragm positionVertical
Dial size4 inches
Product typeDifferential Pressure Gauge

Aerosense CE approved Differential Pressure Gage with adjustable bookmarks feature indicates Positive, Negative or Differential pressure.

Applications:
  • Filter monitoring
  • Blower vacuum monitoring
  • Fan pressure indication
  • Duct, room or building pressures
  • Clean room positive pressure indication
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Wet Differential Pressure Transmitter

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Wet Differential Pressure Transmitter
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Approx. Rs 16,000 / PieceGet Latest Price

Product Details:
BrandDwyer
Output Voltage0-10VDC, 0-5VDC
MediaLiquid
Output range4-20mA
Accuracy0.5%
EnclosureNEMA 4X (IP66)
Valve type3-way valve manifold

Our firm offers a high-quality range of Dwyer Wet/Wet Differential Pressure Transmitter.

Features:
  • Span and zero controls reduce installation and service time
  • Terminal block reduces wiring difficulties saving installation time
  • Optional LED indicator provides local status to identify operational conditions
  • Optional 3-way valve manifold supports high line pressure

Applications:
  • Flow elements
  • Heat Exchangers
  • Filters
  • Coils
  • Chiller
  • Pumps
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Differential Pressure Indicator

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Differential Pressure Indicator
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Approx. Rs 7,000 / PieceGet Latest Price

Product Details:
BrandAerosense
ModelADPI
Modbus communicationRS-485
Accuracy0.5%
Output range4-20mA
Display typeRed LED 7 segment Display
Digits on display4 digits

Our firm offers a high-quality range of Aerosense Differential Pressure Indicator/Transmitter.

Features:
  • Panel mount/Rectangular type cut out
  • Built in High and Low Buzzer Alarm for process set parameter
  • Violation with Acknowledgement key

Applications:
  • Pharma Cleanrooms
  • HVAC
  • Environmental
  • Pharma Machinery
  • Across Filters
  • Hospital Violation Rooms
  • Operation Theaters & Laboratories

Advantages:
  • Precision of measurement in HVAC duct pressure application makes this instrument suitable for optimization of energy & thereby its conversation is ventilation systems
  • Analog Output & RS-485 Communication lead to easy integration with Variable frequency drives & SCADA/BMS
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Minihelic Differential Pressure Gauge

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Minihelic Differential Pressure Gauge
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Approx. Rs 3,500 / PieceGet Latest Price

Product Details:
BrandDwyer
Accuracy5%
Diameter dial face52.39 mm
PressureUpto30 psig
Product typeDifferential Pressure Gauge
Display typeLCD display

Our firm is involved in manufacturing Dwyer Minihelic Differential Pressure Gage. It is most compact gauge but is easy to read and can safely operate

Benefits:

  • Accidental over ranging up to the rated total pressure will not damage the gage
  • With removable lens and rear housing, the gage may be easily serviced at minimum cost
  • The 5% accuracy and low cost make it well suited for wide variety of OEM and user applications

Applications:
OEM application includes cabinet air purging, medical respiratory therapy equipment, air samplers, laminar flow hoods & electronic air cooling system.

The minihelic gage is suitable for many of the same applications as the Magnehelic Gage where greater accuracy, sensitivity & higher and lower differential pressure ranges of Magnehelic Gage are not required.
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Compact Differential Pressure Transmitter

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Compact Differential Pressure Transmitter
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Approx. Rs 3,750 / PieceGet Latest Price

Product Details:
BrandDwyer
Model Number/Name616KD-06
Output Signal4 to 20 mA
Voltage range0-10, 0-5, 2-10, 1-5 Volt.
Accuracy2%
WC Range0-20 IN
PressureMax. 2 psi

Our firm offers a high-quality range of Dwyer Compact Differential Pressure Transmitter.

Features:
  • Simple calibration push button sets back zero and span, saving time installation and over the service life
  • Cost effective and compact device suitable for OEM application
  • Ranges and accuracy selection cover a wide range of applications.

Applications:
  • Air handlers
  • Duct Pressure
  • Variable air volume
  • Filter monitoring
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Dwyer Differential Pressure Switch

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Dwyer Differential Pressure Switch
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Approx. Rs 1,450 / PieceGet Latest Price

Product Details:
BrandDwyer
Media TypeGas
Product typeDifferential Pressure Switch
Water column20 Pa to 5000 Pa
Display typeLCD display
MaterialPlastic
ColorGrey

Our firm offers a high-quality range of Dwyer Differential Pressure Switch.

Features:

  • HVAC Differential Pressure Switch with Dual scale filed adjustable Set Point Knob.
  • The compact size, adjustment knob and low cost makes ADPS/EDPS the perfect choice for HVAC applications.

Applications:
  • Monitoring air filters and ventilators
  • Overheating protection for fan heaters
  • Monitoring industrial cooling air circuits
  • Monitoring flow in duct ventilation
  • Controlling air and fire protection dampers
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Aerosense Clean Room Monitor

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Aerosense Clean Room Monitor
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Approx. Rs 11,000 / PieceGet Latest Price

Product Details:
MeasuresPressure / Temperature & Humidity in one instrument
Temperature range-30 to 50 degree C
Accuracy+/- 0.5 C
Relative humidity+/- 1.8% for 10 to 95% RH
Differential Pressure+/- 0.5% F.S.
Power supply4-20mA

Aerosense Multi-parameter display/transmitter measures Differential pressure, Humidity and Temperature and also optional Clock.

Features:
  • Panel mount/rectangular type cutout for modular wall mounting with stainless steel front plate
  • Built-in high and low Buzzer alarm for process set parameter
  • Internal and External sensor option available
  • RS485 Modbus communication available

Applications:
  • Pharma Clean rooms, HVAC, Environmental, Pharma machinery, across filters, Hospital isolation room, operation theatres and laboratories
  • Precision of measurement in HVAC duct pressure application makes this instrument suitable for optimization of energy
  • Analog output & RS485 communication lead to easy integration with Variable Frequency drives and SCADA/BMS systems
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Aerosense Differential Pressure Transmitter

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Aerosense Differential Pressure Transmitter
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Approx. Rs 4,000 / PieceGet Latest Price

Product Details:
BrandAerosense
Model Number/NameDPT
Auto-zero adjustment time4 seconds
Voltage range0-10 VDC
Power supply4-20mA
Accuracy1%

Aerosense Differential Pressure Transmitter with accuracy and selectable measuring unit.

Benefits:
  • Eight selectable ranges
  • Optional Auto-zero feature which electronically adjusts the transmitter zero at predetermined time intervals (every 10 minutes)
  • The AZ calibration eliminates all output signal drift due to thermal, electronic or mechanical effects
  • Optional display and Auto-Zero feature available
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Dwyer Digital Differential Pressure Gauge

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Dwyer Digital Differential Pressure Gauge
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Approx. Rs 8,500 / PieceGet Latest Price

Product Details:
BrandDwyer
Model No.Series DM
Accuracy1%
Product typeDifferential Pressure Gauge
Display typeLCD display
Digits on display4 digit

Dwyer Digital Differential Pressure and Flow Gages with accuracy of full scale and fits in Magnehelic Gage cut out.
It monitors the pressure of air and compatible gases just as Magnehelic Gage does.

Features:
  • Field programmed reduces installation time
  • User selectable parameter for pressure, air velocity or flow permits the same device for multiple applications
  • Specialized filter set points for alerts when maintenance is due

Applications:
  • Filter monitoring
  • Air Velocity or flow
  • Blower vacuum monitoring
  • Fan pressure indication
  • Duct, room or building pressures
  • Clean room positive pressure indication
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Aerosense Differential Pressure Controller

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Aerosense Differential Pressure Controller
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Approx. Rs 17,000 / PieceGet Latest Price

Product Details:
Brandalm
Output range0-10 V
AZ adjustment time taken4 seconds
Storage temperature-20 to 70 degree C
Display typeLCD display
Response time0.5/10 sec

It is recommended that industrialists dealing in the domain of pressure control & temperature drift should make the selection of the all new range of Aerosense Differential Pressure Controller. The device is a type of differential pressure indicator that comes with advanced & standard accessory items. It is also enabled with the zero point adjustment facility and high point adjustment (span) that is provided to deliver the excellent results as per the desired levels of quality in HVAC, fan & blower industries.

Features:
  • Better accuracy
  • Highest pressure range
  • Protection standard conformance
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Intrinsically Safe Differential Pressure Transmitter

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Intrinsically Safe Differential Pressure Transmitter
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Approx. Rs 45,000 / PieceGet Latest Price

Product Details:
BrandDwyer
Model Number/NameSeries ISDP
Output Voltage4-20mA
Accuracy0.5%
Water column0.25 inch to 100 inch
Bidirectional models water columnUp to 10 inch
Display typeLCD display

Intrinsically safe Differential Pressure Transmitter for Hazardous Zone Pressure and Flow Applications.

It provides a robust NEMA 4X enclosure, a large LCD display that can be programmed to read in pressure, velocity or flow. It is an ideal instrument for monitoring pressure or air flows in hazardous zones having a Class I Div. I Groups A, B, C, D; Class II Div.I Groups E, F, G, Class Div.I ratings
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Dwyer Photohelic Switch

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Dwyer Photohelic Switch
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Approx. Rs 25,500 / PieceGet Latest Price

Product Details:
Media TypeGas
Cable assembly18 inches
Tubing size3/16 inches
NPT adapters size1/8 inches
NPT pipe plugs1/8 inches
Panel mounting RH machine screws6-32 x 1-1/4 inches
Surface mounting RH machine screws6-32 x 5/16 inches
Ring typeMounting ring, snap ring

Dwyer Photohelic Switch/Gage combines the function of precise, highly repeatable differential pressure switch with large easy to read analogue pressure gage with high/low set points and compact size. Compatible with air and non-combustible gases.

Features:
  • Gauge reading unaffected by switch operation and will continue to read pressure even during power loss
  • Zero and range adjustments outside of gage means no disassembly in normal service
  • Solid state design allows for switching in high cycle rate applications

Applications:
  • Pneumatic conveying
  • Air Conditioning systems
  • Clean rooms
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Magnehelic Differential Pressure Gauge

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Magnehelic Differential Pressure Gauge
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Approx. Rs 3,250 / PieceGet Latest Price

Product Details:
Minimum Order Quantity1 Piece
BrandDwyer
ModelSeries 2000
Accuracy2%
PressureLess than 35 psi
Product typeDifferential Pressure Gauge

Select the Magnehelic® gage for high accuracy and for the wide choice of 81 models available to suit your needs precisely. Using Dwyer's simple, frictionless Magnehelic® gage movement, it quickly indicates low air or non-corrosive gas pressures either positive, negative (vacuum) or differential. The design resists shock, vibration and over-pressures. No manometer fluid to evaporate, freeze or cause toxic or levelling problems. It's inexpensive, too.


The Magnehelic® gage is the industry standard to measure fan and blower pressures, filter resistance, air velocity, furnace draft, the pressure drop across orifice plates, liquid levels with bubbler systems and pressures in fluid amplifier or fluidic systems. It also checks gas-air ratio controls and automatic valves and monitors blood and respiratory pressures in medical care equipment.

Note: May be used with Hydrogen. Order a Buna-N diaphragm. 

Product Applications:

  • Filter Monitoring
  • Air Velocity with Dwyer Pitot Tube
  • Blower Vacuum Monitoring
  • Fan Pressure Indication
  • Duct, Room or Building Pressures
  • Clean Room Positive Pressure Indication
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Dwyer Differential Magnehelic Gauge

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Dwyer Differential Magnehelic Gauge
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Approx. Rs 3,450 / PieceGet Latest Price

Product Details:
BrandDwyer
Model No.Series 2000
Accuracy2%
Wetted PartsSS 304
Dial size4 inch

Dwyer Magnehelic Differential Pressure Gage indicates Positive, Negative (Vacuum) or Differential Pressure.

Features:
  • Wide choice of 81 models are available to suit your needs precisely
  • Design resists shock, vibration and overpressures

Applications:
  • Fan & Blower pressures
  • Filter resistance
  • Air Velocity
  • Furnace draft
  • Pressure drop across orifice plate
  • Checks gas-air ratio control and automatic valves
  • Monitors blood and respiratory pressures in medical care equipment
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Aerosense Differential Pressure Switch

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Aerosense Differential Pressure Switch
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Approx. Rs 1,150 / PieceGet Latest Price

Product Details:
BrandDwyer
Model No.PS-200
Media TypeGas
Temperature-20 to 60 degree C
Power supply range0.11 A/250 VAC

Aerosense Differential Pressure Switch offers a cost-effective solution for filter, fan and duct pressure monitoring in building automation systems in HVAC/R industry. The product offers filed selectable switching point adjustment and measurement units in PA.

Applications:
  • Fan, blower and filter monitoring
  • Pressure and flow monitoring
  • valve and damper monitoring
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Differential Pressure Switch

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Differential Pressure Switch
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Approx. Rs 4,500 / PieceGet Latest Price

Product Details:
Media TypeLiquid
Set point range2.5 to 75 psi
Differential pressure 1.0 to 67 psi
Product typeDifferential Pressure Switch
Packaging typeBox

Wet/Wet Differential Pressure Switch with NEMA 4X Enclosure and low differential set points. 

Features:
  • Is suitable for most gas and water based applications.
  • Weatherproof housing provides protection in harsh, wet or dirty environments.

Applications:
  • Proving flow through heat pump or AC unit
  • Proving flow through chiller
  • Proving flow through pump
  • Proof of flow indicator monitoring
  • Indicating filter differential pressure
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Aerosense Differential Pressure Transmitter

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Aerosense Differential Pressure Transmitter
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Approx. Rs 2,800 / PieceGet Latest Price

Product Details:
BrandAerosense
Selectable rangesTwo
Output range4-20mA
Display typeLCD Display
Digits in display4 digit

Our firm is involved in manufacturing and supplying a huge range of Aerosense Differential Pressure Transmitter.

Features:
  • High accuracy sensor
  • Service in Air and non-combustible, Compatible gases
  • Adjustable zero point set

Applications:
  • Air conditioning
  • Filter and Fan
  • Negative pressure isolation room
  • Air pressure controller
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Aerosense Differential Pressure Controller

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Aerosense Differential Pressure Controller
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Approx. Rs 16,000 / PieceGet Latest Price

Product Details:
Brandaerosense
Model Number/NameDPI
AZ adjustment time taken4 seconds
Output range0-10 VDC
Product typePressure Controller

Aerosense Differential Pressure Controller with field selectable measuring range for building automation in HVAC/R industry.

Features:
  • Unit selectable via menu i.e. PA, kPA, MM WC, IN WC, MBAR
  • Combines up to two relay outputs
  • Optional Auto-Zero feature which electronically adjusts the transmitter zero at predetermined time intervals (every 10 minutes)
  • The AZ-calibration eliminates all output signal drift due to thermal, electronic or mechanical effects

Applications:
  • Fan, Blower and filter monitoring
  • Pressure monitoring in cleanrooms
  • Boiler pressure monitoring and alarm
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Dwyer Magnesense Differential Pressure Transmitter

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Dwyer Magnesense Differential Pressure Transmitter
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Approx. Rs 4,500 / PieceGet Latest Price

Product Details:
BrandDwyer
Model Number/NameSeries MS
Display typeLCD display
Voltage range0-10VDC/0-5VDC
Power supply4-20mA

Dwyer Magnesense Differential Pressure Transmitter is an extremely versatile transmitter for monitoring pressure and air velocity.

Features:
  • Field selectable English or Metric ranges
  • Field upgradable LCD display
  • Adjustable damping of output signal
  • Ability to select a square root output for use with pitot tubes and other similar flow sensors.
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Dwyer Digihelic Differential Pressure Controller

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Dwyer Digihelic Differential Pressure Controller
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Approx. Rs 27,500 / PieceGet Latest Price

Product Details:
Branddwyer
Accuracy1 %
Water column0.25 to 5 inches
SPDT control relaysTwo
Output range4-20 mA

Digihelic Differential Pressure Controller is a 3-in-1 instrument possessing a digital display gage, control relay switches and a transmitter with current output.

Features:
  • 3-in-1 instrument allows the reduction of several instruments with one product, saving inventory, installation time and money
  • It is an ideal instrument for pressure, velocity and flow applications.
  • Secure menu program provides access to device operation only for right skill

Applications:
  • SCFM duct flow
  • Filter status
  • Duct or building static pressure
  • Damper and fan control
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Differential Pressure Gauge

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Differential Pressure Gauge
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Product Details:
Minimum Order Quantity1 Piece
BrandALM
Accuracy2% of FS
Case materialDie cast Aluminium
Diaphragm positionVertical
Dial size4 inches
Product typeDifferential Pressure Gauge

CE approved Differential Pressure Gage with adjustable bookmarks feature indicates Positive, Negative or Differential pressure.

Applications:
  • Filter monitoring
  • Blower vacuum monitoring
  • Fan pressure indication
  • Duct, room or building pressures
  • Clean room positive pressure indication
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Series 629 Wet Differential Pressure Transmitter

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Series 629 Wet Differential Pressure Transmitter
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Product Details:
BrandDwyer
Model Number/NameSeries 629
Accuracy0.5%
Output range4-20 mA
Construction typeNEMA 4X (IP66)
Product typeDifferential Pressure Transmitter

The Series 629 Differential Pressure Transmitter monitors the differential pressure of air and compatible gases and liquids. The design employs dual pressure sensors converting pressure changes into a standard output signal for two-wire circuits. Small internal volume and minimum moving parts result in exceptional response and reliability. Terminal block zero and span adjustments are easily accessed under the top cover. The Series 629 Differential Pressure Transmitter is designed to meet NEMA 4X (IP66) construction.


Product Applications

  • Monitor Differential Pressure Across: Flow Elements, Heat Exchangers, Filters, Pumps, Coils, Compressors
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Series DM-2000 Differential Pressure Transmitter

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Series DM-2000 Differential Pressure Transmitter
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Product Details:
BrandALM
Model Number/NameDM 2000
Display typeLCD Display
Output range4-20 mA
Product typeDifferential Pressure Transmitter
Accuracy0.5 - 5%

The Dwyer Series DM-2000 Differential Pressure Transmitter senses the pressure of air and compatible gases and sends a standard output signal. The DM-2000 housing is specifically designed to mount in the same diameter cutout as a standard Magnehelic® gage. A wide range of models is available factory calibrated to specific ranges.


Pressure connections are inherent to the glass filled plastic moulded housing making installation quick and easy. Digital push-button zero and span simplify calibration over typical turn-potentiometers.


Product Applications:

  • Filter monitoring
  • Fan pressure indication
  • Duct static pressures
  • Bi-direction ranges ideal for sensing fluctuating building pressure
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Series 616KD Differential Pressure Transmitter

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Series 616KD Differential Pressure Transmitter
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Product Details:
BrandDwyer
Model Number/Name616KD
DIN rail35 mm
Water column1 to 20 inches
Pressure2/13.8 psi
Voltage range16-35 VDC

The Series 616KD Differential Pressure Transmitters with One-Touch® technology are designed for simplicity making them the ideal choice for installers and maintenance professionals.


The One-Touch® Differential Pressure Transmitters are cost-effective, compact transmitters that reduce up front costs as well as expenses over the life of the product. These instruments not only alleviate cumbersome turn pots typically found in most transmitters, but eliminate entirely the need to span the instrument during calibration. With a single digital push button, both ZERO AND SPAN are calibrated properly, nothing else is required. No additional reference pressure sources and separate calibration devices are necessary; no need to remove from service and send to a lab. All that is required of the installer or user is to let the unit sit at zero reference pressure, then push a button. The transmitter is now ready for operation. Time savings are enormous over the life of the product compared to traditional transmitters which require time to annually remove the product from service plus the additional time to actually perform a complete full-span calibration.


Mounting is simple with integral mounting holes on the 616KD that are inherent to the moulded housing. The 616KD has the expanded capability to be mounted on a DIN rail either via its side or back integral DIN rail clips. The Series 616KD has easy-to-wire open screw terminals at the top of the housing. An optional protective cap snaps directly to the housing to cover terminals.


The One-Touch® family of Differential Pressure Transmitters are ideal for building automation applications such as air handlers, duct pressure, variable air volume and filter monitoring.

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Series 3000MR/3000MRS Photohelic Switch Gage

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Series 3000MR/3000MRS Photohelic Switch Gage
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Product Details:
BrandDwyer
Model No.3000MR
Accuracy+/- 2%
Hole size122 mm
Cable assemblies18-inch (45 cm)
Switch repeatability+/- 1%
Pressure1.725 bar - 5.51 bar

Using solid state technology, the Series 3000MR and 3000MRS Photohelic® switch/gages combine the functions of a precise, highly repeatable differential pressure switch with a large easy-to-read analogue pressure gage employing the durable, time-proven Magnehelic® gage design. Switch setting is easy to adjust with large external knobs on the gage face. Gage reading is unaffected by switch operation - will indicate accurately even if power is interrupted. Solid state design now results in greatly reduced size and weight. 3000MR models employ versatile electromechanical relays with gold over silver contacts - ideal for dry circuits. For applications requiring high cycle rates, choose 3000MRS models with SPST (N.O.) solid state relays. All models provide both low and high limit control and include 18-inch (45 cm) cable assemblies for electrical connections.

Switch deadband is one pointer width - less than 1% of full scale. Compatible with air and other non-combustible, non-corrosive gases.

Included Accessories: mounting ring, snap ring; 18" (45 cm) cable assembly; (2) 3/16" tubing to 1/8" NPT adapters; (2) 1/8" NPT pipe plugs; (4) 6-32 x 1-1/4" RH machine screws (panel mounting); and (3) 6-32 x 5/16" RH machine screws (surface mounting).


Product Applications

  • Fan Control
  • Damper Control
  • Environmental Pollution Control
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Series A3000 Photohelic Pressure Switch Gage

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Series A3000 Photohelic Pressure Switch Gage
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Product Details:
Model No.Series A3000
Accuracy0.5 - 5%
Water column0-6 mm
PressureUp to 30 psi
Single positive pressure413 bar
Product typePressure Switch Gage

Photohelic® Switch/Gages function as versatile, highly repeatable pressure switches combined with a precise pressure gage employing the time-proven Magnehelic® gage design. The Photohelic® switch/gage measures and controls positive, negative or differential pressures of air and compatible gases. Standard models are rated to 25 psi (1.7 bar) with options to 35 (2.4) or 80 (5.5 bar) psi. Single pressure 36000S models measure to 6000 psi (413 bar) with a 9000 psi (620 bar) rating. Two phototransistors actuated, DPDT relays are included for low/high limit control. Easy to adjust setpoint indicators are controlled by knobs located on the gage face. Individual set point deadband is one pointer width - less than 1% of full scale. Set points can be interlocked to provide variable deadband - ideal for control of fans, dampers, etc. Gage reading is continuous and unaffected by switch operation, even during loss of electrical power.

Photohelic Sensing - How It Works

In typical applications, these Dwyer switch/gages control between high and low-pressure set points. When pressure changes, reaching either set point pressure, the infrared light to the limiting phototransistor is cut off by the helix-driven light shutter. The resulting phototransistor signal is electronically amplified to actuate its DPDT slave relay and switching occurs. Dead band between make and break is 1% of full scale or less - just enough to assure positive, chatter-free operation.


Relay-Transformer Features

A plastic housing protects all electronic components. Solid-state and integrated circuit electronics are on glass-epoxy printed circuit boards and self-extinguishing terminal boards.


Product Applications:

  • Air Conditioner Systems
  • Clean Rooms
  • Fume Exhaust Systems
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Series 2-5000 Minihelic Differential Pressure Gauges

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Series 2-5000 Minihelic Differential Pressure Gauges
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Product Details:
BrandDwyer
Accuracy5%
Wetted PartsSS 304
Connection typeMale NPT
Connection size1/8 inch
Tubing inner diameter3/16 inch
Hole diameter2-5/8 inches
Mounting typePanel mounting
PressureUp to 30 psig

We hold expertise in offering the wide gamut of Minihelic Differential Pressure Gauges.

Combining clean design, small size and low cost with enough accuracy for all but the most demanding applications our Minihelic II gage offers the latest in design features for a dial type differential pressure gage. It is our most compact gage but is easy to read. Over-pressure protection is built into the Minihelic II gage by means of a blow-out membrane moulded in conjunction with the diaphragm. Accidental over-ranging up to the rated total pressure will not damage the gage. With removable lens and rear housing, the gage may be easily serviced at minimum cost.

With the housing moulded from mineral and glass filled nylon and the lens moulded from acrylic, the gage will withstand rough use and exposure as well as high total pressure. The accuracy and low cost of the Minihelic II gage make it well-suited for a wide variety of OEM and user applications. OEM applications include cabinet air purging, medical respiratory therapy equipment, air samplers, laminar flow hoods, and electronic air cooling systems. As an air filter gage, the Minihelic II gage finds many end-use applications in large stationary engines, compressors, ventilators, and air handling units. The Minihelic II gage is suitable for many of the same applications as the Magnehelic gage where the greater accuracy, sensitivity, and higher and lower differential pressure ranges of the Magnehelic gage are not required.


Product Applications:

  • Room Positive Pressure Sensing
  • Local Indication on Filter Status
  • Face Velocity on Fume Hood
  • Duct Pressures
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Differential Pressure Switch

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Differential Pressure Switch
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Product Details:
BrandDwyer
Model No.Series ADPS
Media TypeGas
Water column20 Pa to 5000 Pa
Diaphragm materialSilicone
PA body size6.6 inches

The Series ADPS Adjustable Differential Pressure Switch is designed for pressure, vacuum, and differential pressures. The dual scaled adjustment knob in inches water column and pascals allows changes to the switching pressure to be made without a pressure gage. The silicone diaphragm and PA body make the series ADPS ideal for use with air and other noncombustible gases. Series EDPS models meet UL508 and are constructed of plenum rated plastics. The compact size, adjustment knob and low cost make the ADPS/EDPS the perfect choice for HVAC applications.


Product Applications

  • Monitoring air filters and ventilators
  • Monitoring industrial cooling-air circuits
  • Overheating protection for fan heaters
  • Monitoring flows in ventilation ducts
  • Controlling air and fire-protection dampers
  • Frost protection for heat exchanges
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Series DX Wet Differential Pressure Switch

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Product Details:
Media TypeLiquid
Switch typeSPDT
Static pressure13.8 bar
Set point range0.17 to 5.17 bar
Differential pressure0.07 to 4.62 bar
Display typeLCD display

The Series DX is a differential pressure switch that makes a contact output based on the differential between two pressure sources. Wetted materials of brass and fluoroelastomer are suitable for use with most gases and water-based solutions. Standard is a weatherproof, UL type 4X, an enclosure for dust-laden, outdoor, or wash-down installation environments. Series DX incorporates an externally adjustable set point, integral mounting flange and a removable electrical terminal block for quick and easy installation. The DX uses opposing diaphragms to sense the high and low pressure with a pivot mechanism that transfers the difference of the two pressures to the SPDT switch.


Product Applications:

Indicating filter differential pressure. For example initiating water filter backwash as the filter becomes clogged on increasing differential pressure.Proof of flow indicator monitoring differential pressure from a sensing device. For example sensing the pressure across an orifice plate to prove water flow.Proving flow through a pump by sensing the pressure across the pump to make sure the pump does not run dry.Proving flow through a chiller. Often called evaporator water pressure drop.Proving flow through a heat pump or AC unit. Often called a condenser water lock-out switch.

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Magnehelic Differential Pressure Indicating Transmitter

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Product Details:
BrandDwyer
Transmitter technologySeries 600
Control range4-20 mA
Supply range10-35 VDC
Product typePressure Indicating Transmitter
ModelSeries 605

The Series 605 Magnehelic Indicating Transmitter provides for both visual monitoring and electronic control of very low differential pressure. The Series 605 is ideal for control applications in building HVAC systems where the local indication is desired during routine maintenance checks or necessary when troubleshooting the system. The easily read dial gauge is complimented by the two-wire, control signal utilizing the time-proven Dwyer Magnehelic gage mechanical design and Series 600 transmitter technology. The two-wire design with the terminal strip on the rear simplifies connection in any control loop.


Product Applications:

  • Monitor pressures in ducts, rooms, or total building pressures.
  • Filter monitoring.
  • Local indication of clean room pressures with process signal sent to control room.
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Series BDPA Adjustable Differential Pressure Alarm

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Product Details:
NPT connection1/2 inches
Conduit fitting adapter1/2 inches
Adapter modelA-483
Battery line power24 VDC/VAC
BDPA water column20 Pa to 5000 Pa
Body size6.6 inches

The Series BDPA Adjustable Differential Pressure Alarm with built-in audible and visual set point indication is designed for overpressure, vacuum, and differential pressure applications. The scaled adjustment knob allows changes to the switching pressure to be made without a pressure gage. The silicone diaphragm and PA body make the Series BDPA perfect for use with air and other noncombustible gases.

The Series BDPA Adjustable Differential Pressure Alarms offer a versatile range of configurations allowing utilization of their many features. If connecting line power, the battery can act as backup power in case of power outage. When setpoint threshold is reached, a local loud audible buzzer and bright LED will indicate periodically notifying of set point activation. An SPDT contact may also be wired to send a signal remotely to a DDC or building management system. A snooze button located through an opening in the cover can be pressed by the user to manually disengage the audible and visual indication until a maintenance operation is performed. If the instrument is mounted where it is difficult to access, a remote contact may be connected allowing the user to deactivate the buzzer and LED at the remote contact location.


The Series BDPA Differential Pressure Alarm's great functional versatility makes it perfect for the filter, fan, and ventilation applications or any retrofit job where installing electrical wiring proves cost-prohibitive.

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Capsuhelic Differential Pressure Gauges

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Product Details:
BrandALM
Wetted PartsSS 304
MaterialStainless Steel
Water column0.1 - 0.5 inch
System pressureUp to 500 psi
Product typePressure Gauges

The Capsuhelic gage is designed to give fast, accurate indication of differential pressures. The gage may be used as a readout device when measuring flowing fluids, the pressure drop across filters, liquid levels in storage tanks and many other applications involving pressure, vacuum or differential pressure.

Using the basic design of Dwyer's time-proven Magnehelic gauge, the Capsuhelic gage contains a simple, frictionless movement that permits full-scale readings as low. The pressure being measured is held within a capsule which is an integral part of the gage. This containment of the pressure permits the use of the gage on system pressures.

 

The diaphragm-actuated Capsuhelic gage requires no filling liquid which might limit its outdoor applications. Zero and range adjustments are made from outside the gage, and there is no need to disassemble the gage in normal service.

 

Note: May be used with Hydrogen. Order a Buna-N diaphragm.

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Digihelic II Differential Pressure Controller

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Product Details:
Branddwyer
SPDT control relaysTwo
Output range4-20 mA
Display typeLCD display
Product typePressure Controller

The Digihelic Controller just got better with the New Series DHII Differential Pressure Controller. The DHII takes all the fabulous features of the standard Digihelic Pressure Controller and packages them in a robust NEMA 4 (IP66) housing.

The Digihelic II Pressure Controller combines the 2 SPDT control relays, process output and Modbus communications with a large, brightly backlit 4 digit LCD display that can easily be seen from long distances. The electrical wiring has also been enhanced in the DHII with its detachable terminal blocks. The removable terminals allow the install to easily wire the terminal block outside the housing and then attach to the circuit board, reducing wiring difficulties and installation time on the process.

The Digihelic II Differential Pressure Control in the new NEMA 4 (IP66) enclosure enables this product to be the perfect choice when mounting pressure controls outdoors in such applications as rooftop air handlers. This housing also makes it the ideal solution for surface mounting in clean rooms or facilities where water or a cleaning solution is utilized in maintaining plant cleanliness.


Applications:

  • Air Handlers
  • Clean Rooms
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