DWYER Series 616D Differential Pressure Transmitter

RM 0.00



Series 616D Differential Pressure Transmitter

Mounts on 35 mm DIN Rail, ±0.25% Full Scale Accuracy

The Series 616D Differential Pressure Transmitter senses the pressure of air and compatible gases and sends a standard 4 to 20 mA or 0 to 10 VDC output signal. The 616D enclosure is specifically designed to mount on a 35 mm DIN rail in a panel. This mounting style allows for several units to be mounted closely together reducing required space. The span and zero controls are for use when checking calibration. They are not intended for re-ranging. Versatile circuit design enables operation in 2-wire current loops.

NIST CALIBRATION available in Product Configurator.


Product Applications

  • Air handlers
  • Duct pressure
  • Variable air volume
  • Filter monitoring



  • Simple calibration push-buttons to set zero and span
  • Cost effective and compact device suitable for OEM applications where space, simplicity, and value are key



  • Service: Air and non-combustible, compatible gases.
  • Wetted Materials: Consult factory.
  • Accuracy: ±0.25 FS @ 77°F (25°C).
  • Thermal Effect: ±0.02% FS/°F (0.036% FS/°C).
  • Stability: ±1% FS/yr.
  • Temperature Limits: 14 to 185°F (-10 to 85°C).
  • Pressure Limits: See chart on catalog page.
  • Power Requirements: 10 to 35 VDC (2-wire); 17 to 36 VDC, or isolated 21.6 to 33 VAC (3-wire).
  • Output Signal: 4 to 20 mA (2-wire); 0 to 10 VDC (3-wire).
  • Zero and Span Adjustments: Push buttons.
  • Loop Resistance: Current output: 0 to 1250 Ω max; Voltage output: Load resistance 1 kΩ min.
  • Current Consumption: 40 mA max.
  • Electrical Connections: Screw-type terminal block.
  • Process Connections: 1/8″ female NPT. Accessories included are 2 barbed fittings for 1/8″ (3.12 mm) and 3/16″ (4.77 mm) ID rubber or vinyl tubing.
  • Mounting Orientation: Vertical, on a 1.378″ (35 mm) DIN rail.
  • Weight: 4.8 oz (136 g).
  • Agency Approvals: CE.



Models & Ordering

Inches of w.c.

Model Description
616D-2 Differential pressure transmitter, range 0-6″ w.c., max. pressure 10 psig.
616D-3 Differential pressure transmitter, range 0-10″ w.c., max. pressure 10 psig.
616D-4 Differential pressure transmitter, range 0-20″ w.c., max. pressure 20 psig.
616D-5 Differential pressure transmitter, range 0-40″ w.c., max. pressure 20 psig.
616D-6 Differential pressure transmitter, range 0-100″ w.c., max. pressure 15 psig.
616D-7 Differential pressure transmitter, range 0-200″ w.c., max. pressure 45 psig.



Model Description
616D-8 Differential pressure transmitter, range 0-10 psid, max. pressure 45 psig.






Additional information


616D-2, 616D-3, 616D-4, 616D-5, 616D-6, 616D-7, 616D-8