Series AT-1900 ATEX/IECEx Approved Compact Low Differential Pressure Switches
Series AT-1900 ATEX/IECEx Approved Compact Low Differential Pressure Switches is our most popular switch and is now available in a flameproof package. This pressure switch combines advanced design and precision construction to make these switches able to perform many of the tasks of larger, costlier units. For air and non-combustible compatible gases, the Series AT-1900 switches have set points from 0.07 to 20 in w.c. (1.8 to 508 mm). Set point adjustment is easy with range screw located inside the switch enclosure. Series AT-1900 switches are available in aluminum enclosures and ideal for low pressure, hazardous area applications.
Important notes for installation:
• Cables must be fitted through 1/2" NPT cable gland or ATEX/IECEx conduit (not supplied with instrument).
• Make sure after cabling to close tight cover and cable gland, in order to maintain IP66 rating.
• 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 areas.
Please see Series 1900 for non-ATEX/IECEx approved.
Product Applications
- Hazardous area low pressure applications
- Air conditioning refrigeration coil icing detection; defrost cycle initiation
- Clogged filter detection
- Variable air volume controller
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