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DWYER 685 differential pressure transmitter

The Series 685 Differential Pressure Transmitter is used to measure differential pressure and vacuum. The adjustable pressure range and output signal make it the ideal choice for installers and maintenance professionals. It has a user-configurable response time via a jumper and can be mounted in any orientation. Applications include building automation systems, clean room monitoring, valve and flap control, filter monitoring, and air flow control. It has an adjustable pressure range, a single button to zero, and can be reset to factory settings with a long button press. No additional reference pressure sources or separate calibration devices are necessary.

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Made in USA. brand DWYER, model 685

International delivery to United Arab Emirates, Kuwait, Qatar, Saudi Arabia, Saudi Arabia, Bahrain, Oman and other Middle Eastern countries.
Our warehouses are located in UAE.

price by request

Available

Available

Founded in 1931, DWYER manufactures equipment for measurement, conversion and control – pressure, temperature, level, flow.

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Only the best I&C brands

Our company is a UAE supplier of control and measuring instruments from well-known world brands

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Discounts for organisations

We sell high-tech equipment at best prices. We provide really advantageous conditions for partners

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Fast delivery across the Middle East

Supply to United Arab Emirates, Kuwait, Qatar, Saudi Arabia, Bahrain, Oman and other countries

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Professional advice on device selection

Our specialists are ready to advise you on any technical question. We can find an analogue of any device

Description of DWYER 685

PRODUCT APPLICATIONS

  • Building automation, air-conditioning and clean room technology
  • Valve and shutter control
  • Filter, ventilator and fan monitoring
  • Air-flow control

FEATURES

  • Cost effective and compact device suitable for OEM applications where space, simplicity, and value are key
  • Single button to zero saves maintenance time
  • Factory restore to defaults with a long button press
  • User-adjustable response time provides versatility for many applications

Technical specifications of DWYER 685

  • Service: Air and non-corrosive gases.
  • Sensor Type: Piezoresistive pressure sensor.
  • Output Signal: 2-wire: 4-20 mA; 3-wire: 0-10 V.
  • Supply Voltage: 2-wire: 18-30 VDC; 3-wire: 18-30 VAC/DC
  • Loop Resistance: 2-wire: 500 Ω max; 3-wire: ≥ 1 kΩ (≤ 10 mA)
  • Maximum Current Draw: 2-wire: 21 mA; 3-wire: 40 mA.
  • Accuracy*: ≤ ±0.5% RSS (BFSL), ± 1Pa.
  • Thermal Effects*:  See model-dependent specifications table.
  • Long-Term Stability*: ≤ ±1% RSS per year.
  • Temperature Limits: -4 to 158°F (-20 to 70°C).
  • Humidity Limits: 0 to 95% RH, non-condensing.
  • Response Time: 1 s (default) or 200 ms (user selectable).
  • Pressure Connections: 6 mm hose connection.
  • Electrical Connection: Spring connector for cable and leads up to 1.5 mm² .
  • Cable Conduit: Cap nut conduit, 15 mm (across flats), made of polyamide.
  • Mounting: Screw fastening with sheet metal screws.
  • Housing Material: ABS.
  • Housing Dimensions: Ø 66 x 28 mm.
  • Enclosure Rating: IP54.
  • Weight: 1.6 oz (46 g).
  • Compliance: CE, UKCA.

How to buy DWYER 685

Model Description Price
685-00 Differential pressure transmitter, 0-1″ w.c., 4-20 mA output
$128.35
685-00-V Differential pressure transmitter, 0-1″ w.c., 0-10 V output
$111.80
685-01 Differential pressure transmitter, 0-2″ wc, 4-20mA output
$111.80
685-01-V Differential pressure transmitter, 0-2″ wc, 0-10 V output
$111.80
685-02 Differential pressure transmitter, 0-3″ wc, 4-20mA output
$128.35
685-02-V Differential pressure transmitter, 0-3″ wc, 0-10 V output
$111.80
685-03 Differential pressure transmitter, 0-5″ wc, 4-20mA output
$111.80
685-03-V Differential pressure transmitter, 0-5″ wc, 0-10 V output
$111.80
685-04 Differential pressure transmitter, 0-10″ wc, 4-20mA output
$128.35
685-04-V Differential pressure transmitter, 0-10″ wc, 0-10 V output
$128.35
685-05 Differential pressure transmitter, 0-15″ wc, 4-20mA output
$111.80
685-05-V Differential pressure transmitter, 0-15″ wc, 0-10 V output
$111.80
685-06 Differential pressure transmitter, 0-20″ wc, 4-20mA output
$128.35
685-06-V Differential pressure transmitter, 0-20″ wc, 0-10 V output
$111.80
685-07 Differential pressure transmitter, 0-25″ wc, 4-20mA output
$111.80
685-07-V Differential pressure transmitter, 0-25″ wc, 0-10 V output
$111.80
685-08 Differential pressure transmitter, 0-40″ wc, 4-20mA output
$128.35
685-08-V Differential pressure transmitter, 0-40″ wc, 0-10 V output
$111.80
685-09 Differential pressure transmitter, 250 Pa, 4-20mA output
$111.80
685-09-V Differential pressure transmitter, 250 Pa, 0-10 V output
$111.80
685-10-V Differential pressure transmitter, 750 Pa, 0-10 V output
$111.80
685-10 Differential pressure transmitter, 750 Pa, 4-20 mA output
$128.35
685-11 Differential pressure transmitter, 1250 Pa, 4-20mA output
$111.80
685-11-V Differential pressure transmitter, 1250 Pa, 0-10 V output
$111.80
685-12 Differential pressure transmitter, 2500 Pa, 4-20mA output
$128.35
685-12-V Differential pressure transmitter, 2500 Pa, 0-10 V output
$111.80
685-13 Differential pressure transmitter, 5000 Pa, 4-20mA output
$111.80
685-13-V Differential pressure transmitter, 5000 Pa, 0-10 V output
$111.80

Accessories for DWYER 685

Model Description Price
A-302F-A 303 SS Static pressure tip with mounting flange, for 3/16″ I.D. rubber or plastic tubing. 4″ insertion depth, includes mounting screws
$12.40
A-360 Aluminum DIN rail – only available in 1 m length (2.8 ft).
$11.35
A-480 Plastic static pressure tip
$2.15
A-489 4″ 303 SS straight static pressure tip with flange, 1/4″ hose barb.
$9.50
A-685-DIN DIN rail adapter kit for Series 685
$14.25
SCD-PS 100 to 240 VAC/VDC to 24 VDC power supply
$40.75

User Guide and Instruction manual for DWYER 685

You can request the necessary certificates, documentation, instructions and user guide for DWYER 685 using the special form.

You can buy DWYER 685 in UAE at a favourable price in «Texair FZCO» by leaving a request on the website, by phone +441225535040 or by email . DWYER 685 price are subject to change depending on exchange rates. We deliver instruments by transport companies in United Arab Emirates, Kuwait, Qatar, Saudi Arabia, Saudi Arabia, Bahrain and other Middle Eastern countries.