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Dwyer Series IS626

Series IS626 Intrinsically Safe Pressure Transmitter

For Use In Hazardous Locations

The Dwyer Series IS626 Intrinsically Safe Pressure Transmitters convert pressure into a standard 4-20 mA output signal. The Series IS626 can be used to accurately measure compatible gases and liquids compatible with its 316/316L Stainless Steel wetted parts. Series IS626 full scale accuracy is 0.25%. Designed for industrial environments with a NEMA 4X (IP66) housing, this transmitter resists most effects of shock and vibration. Models are available with a 3′ cable or M-12 4 pin connection.

The IS626 is UL listed for use in Hazardous (Classified) Locations. The protection method is by Intrinsic Safety,”ia”. It was investigated by UL under UL Standard 913 Sixth Edition and CSA Standard No. 157-92.



  • Service:Compatible gases and liquids.
  • Wetted Materials:Type 316, 316L SS.
  • Accuracy:0.25% full scale; absolute range: 0.5% full scale (includes linearity, hysteresis, and repeatability).
  • Temperature Limit:0 to 176°F (-18 to 80°C).
  • Compensated Temperature Range:0 to 176°F (-18 to 80°C).
  • Thermal Effect:±0.02% FS/°F (includes zero and span).Pressure Limits:See Catalog page.Power Requirements:10 to 28 VDC.Output Signal:4 to 20 mA.Response Time:50 msec.Loop Resistance:0-900 ohms maximum.Current Consumption:38 mA (maximum).Electrical Connections:3 ft. cable or 4-pin M-12 Connector.Process Connection:1/4″ male/female NPT and BSPT.Enclosure Rating:NEMA 4X (IP66).Mounting Orientation:Mount in any position.Weight:8.9 oz (252 g).Agency Approvals:CE, cUL, UL. Intrinsically Safe to UL Standard 913.
    For use in Hazardous (Classified) Locations:
    Class I Div. 1 Groups A,B,C,D; Class II Div. 1 Groups E,F,G; Class III Div. 1.
    Temperature Code: T4 @ 80°C ambient.
    Install in accordance with control drawing 01-700797-00.

WARNING: To prevent ignition of flammable or combustible atmospheres, disconnect power before servicing. Use with approved safety barriers using entity evaluation.


Available Models

IS626-00-GH-P1-E1-S1range 15 psia, max. pressure 30 psi, over pressure 150 psi.
IS626-07-GH-P1-E1-S1range 15 psi, max. pressure 30 psi, over pressure 150 psi.
IS626-08-GH-P1-E1-S1range 30 psi, max. pressure 60 psi, over pressure 300 psi.
IS626-09-GH-P1-E1-S1range 50 psi, max. pressure 100 psi, over pressure 300 psi.
IS626-10-GH-P1-E1-S1range 100 psi, max. pressure 200 psi, over pressure 500 psi.
IS626-11-GH-P1-E1-S1range 150 psi, max. pressure 300 psi, over pressure 750 psi.
IS626-12-GH-P1-E1-S1range 200 psi, max. pressure 400 psi, over pressure 1000 psi.
IS626-13-GH-P1-E1-S1range 300 psi, max. pressure 600 psi, over pressure 1500 psi.
IS626-14-GH-P1-E1-S1range 500 psi, max. pressure 1000 psi, over pressure 2500 psi.
IS626-15-GH-P1-E1-S1range 1000 psi, max. pressure 2000 psi, over pressure 5000 psi.
IS626-16-GH-P1-E1-S1range 1500 psi, max. pressure 3000 psi, over pressure 5000 psi.



A-295Female four pin M-12 to cable gland connector.
A-23116' (5 m) shielded cable with 4 pin female M-12 connection.
A-240-DCooling tower, perforated, 1/4" male/female BSPP.
A-250-DCooling tower, spiral, 1/4" male/female BSPP.
A-251Pressure snubber, brass, 1/4" male/female BSPT.
A-257Pressure snubber, 316 SS, 1/4" male/female BSPT.
MTL5041Intrinsically safe galvanic barrier.
MTL7706Intrinsically safe zener barrier.