Dwyer AT11910 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 1900 for non-ATEX approved.


Service: Air and non-combustible, compatible gases.

Wetted Materials: Consult factory.

Temperature Limits: -30 to 180°F (-34 to 82.2°C); Case: -58 to 140°F (-50 to 60°C) (Note: Product temperature limits differ from case).

Pressure Limits: 45 in w.c. (11.2 kPa) continuous, 10 psig (68.95 kPa) surge.

Switch Type: SPDT.

Repeatability: ±3% FS.

Electrical Rating: 15 A @ 120 to 480 VAC, 60 Hz. Resistive 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC, 60 Hz. Derate to 10 A for operation at high cycle rates.

Mounting Orientation: Diaphragm in vertical position.

Set Point Adjustment: Screw type on pressure switch inside the Exd enclosure accessible by hole with plug on housing. Setpoint regulation must be done with instrument de-energized. Follow instructions and safety warning to open cover.

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: 7.49 lb (3.4 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.