AT6-1900 – Explosion-proof Atex/iecex exd differential pressure switch for low ranges

Quick Overview

ATEX_WEB_COMHAS     logo_iecex     logo_comhas

• One of the most popular Dwyer® pressure switch series 1900 it is now available from
Comhas as single instrument Atex/IECEx approuved
• 6 models for operating ranges from 0.07 inches W.C. (18 Pascal) to 20 inches W.C. (5000 Pascal)
• Repeatability ±3%

Description

Atex:
CE 1370
II 2G Ex d IIC T6 Gb
II 2D Ex tb IIIC T85°C Db, -60°C≤T amb≤+60°C
Certificate: BVI 15 ATEX 0076

IECEx:
Ex d IIC T6 Gb
Ex tb IIIC T85°C Db IP66
Certificate: IECEx EPS 15.0063X

Enclosure rating:
IP66

SPECIFICATIONS

  1. Service: air and compatible gases
  2. Wetted parts: consult factory
  3. Temperature limits: pressure switch 1900: -30 to 180°F (-34 to 82.2°C)
  4. Case: -76 to 140°F (-60 to 60°C)*
  5. Pressure limits: 45”W.C. (11.2 kPa) continuous 10 psig (68.95 kPa) surge
  6. Switch: type SPDT
  7. Repeatability: ±3%
  8. Electrical rating:
    15A @ 120-480 VAC
    60 Hz resistivo
    1/8 HP @ 125 VAC
    1/4 HP @ 250 VAC, 60 Hz
    Derate to 10A for operating at high cycle rates.
  9. Electrical wiring: 3 screw type, common, normally open and normally closed
  10. Set point adjustement: screw type on pressure switch inside the Exd enclosure accessible only opening the housing. Setpoint regulation must be done with instrument de energised. Follow instructions and safety warning to open cover.
  11. Installation: in vertical position
  12. Diaphragm: silicon rubber standard
  13. Housing material: aluminium
  14. Finishing: texture epoxy coated RAL 9022
  15. Pressure connections: 1/8” NPT F or G 1/8” F In presence of acetylene it is necessary to use stainless steel.
  16. Electrical connections: 1 x M25 x 1.5 F standard (cable gland not included)
  17. Dimensions: see drawing below
  18. Weight: 2.4 Kg ab.

CAUTION FOR USE ONLY WITH AIR OR COMPATIBLE GASES!
CONTACT FACTORY FOR USE WITH GASES, OTHER THAN AIR AND NITROGEN.

 

*  Operating ambient temperature is defined also according to the options and pressure instrument choosed.

 

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