Dwyer AT1ADPS Series

Important notes for installation:

  • Cables must be fitted through 1/2″ NPT cable gland or ATEX conduit (not supplied with instrument).
  • Make sure after cabling to close tight cover and cable gland, in order to keep IP66 rating (IP65 with option OPV, overpressure relief valve).
  • Open cover only after de-energizing instrument.
  • Attention: Check local safety rules and warnings on unit and manual for a correct use of the instrument in hazardous area.

Please see SERIES ADPS for non-ATEX approved.


Service: Air and non-combustible, compatible gases.

Wetted Materials: Diaphragm material: Silicone;
Housing material:
Switch body: PA 6.6 and POM;
Cover: Polystyrene;
Brass or SS depending on pressure connections chosen.

Temperature Limits: Process and ambient temperature from -4 to 185°F (-20 to 85°C); Case: -58 to 140°F (-50 to 60°C) (Note: Product temperature limits differ from case).

Pressure Limits: 40 in w.c. (10 kPa).

Switch Type: SPDT.

Electrical Rating: Max. 1.5 A/250 VAC, max. switching rate: 6 cycles/min.

Set Point Adjustment: Hand knob on pressure switch inside case. (De-energize before opening case).

Mounting Orientation: Vertically, with pressure connections pointing downwards.

Mechanical Working Life: Over 106 switching operations.

Enclosure Rating: IP66. IP65 with option OPV, overpressure relief valve.

Housing Material: Aluminum.

Finishing: Texture epoxy coat RAL7038.

Pressure Connections: 1/8″ NPT female brass (SS optional). In presence of acetylene it is necessary to use SS.

Electrical Connections: Two 1/2″ FNPT. Cable gland not included.

Weight: 7 lb (3.2 kg).

ATEX Approved Products from Comhas with ECN: NEMKO 10ATEX1096.

Agency Approvals: CE 0470 II2 GD Ex d IIC Gb T6; -50°C ≤Ta ≤ +60°C Ex tb IIIC Db T 85°C.