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0 to 0.25 inH2O, Differential Pressure, NEMA 4X Housing


Item# 616WL-2

In stock

Lead Time (If not in stock): 7 Days
0 to 0.25 inH2O, Differential Pressure, NEMA 4X Housing 616WL-2 616WL-2

Dwyer Instruments is now a DwyerOmega brand. We're working together to bring you the best products in a single shopping experience.

  • Applications include low pressure applications, outdoor HVAC, dust collection, roof-top equipment
  • NEMA 4X rated enclosure provides protection in harsh environments permitting outdoor monitoring or in areas where dust and particulate matter exists
  • Easy to read LCD display provides immediate local alerts allowing corrective action to be taken quicker to eliminate the problem from becoming widespread
  • Zero and span controls provides easy calibration checks and shorter installation time to get device running and monitoring

616WL-2 Model Options

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Additional Features
Pressure Range
Pressure Type
Accuracy Class
Accuracy Value (Compensated Range)
Output Signal
Electrical Output
Pressure Port Size
Pressure Port Type
Operating Temperature Range
Accuracy Value

  • Compensated Temperature 20 to 120°F (-6.67 to 48.9°C)
  • Supply Voltage 12-30 VDC (2-wire)
  • Weight 17-18 oz (482-510 g)
  • Stability ±1% F.S./yr.
  • Output 4-20 mA
  • Thermal Effects ±0.02% F.S./°F (0.036% F.S./°C).
  • Long Term Drift ±1% FS/yr
  • Process Connection Barbed
  • Accuracy Value ±0.50% F.S.
  • Service Air and non-combustible
  • Temperature Limit -20 to 60 °C (-4 to 140 °F)
  • Zero and Span Digital

Dwyer Instruments is now a DwyerOmega product brand


The Series 616WL Differential Pressure Transmitter senses very low pressures of air and non-combustible, compatible gases and sends a standard 4-20 mA output signal. All models, including those featuring the 3 digit LCD digital read-out, are factory calibrated to specific ranges as listed in the chart below.

Positive, negative and differential pressures can be measured within a full span accuracy of ±0.50%. This weatherproof unit is enclosed in a polycarbonate case, designed to meet (IP66/NEMA 4X). Internal digital push button zero and span allow for quick and simple field calibration.

Product Applications

Low pressure applications
Outdoor HVAC
Dust collection
Roof-top equipment

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