Series AT-1800 ATEX/IECEx Approved Low Differential Pressure Switch

The 1800 in Flameproof ATEX/IECEx Enclosure

Essential for industrial environments, the Series AT-1800 ATEX/IECEx Approved Low Differential Pressure Switch combines small size with 2% repeatability. Set point adjustment inside the switch allows for set point settings across 9 ranges from the low of .07 in w.c. to a maximum 85 in w.c. differential pressure. Series AT-1800 flameproof enclosures are available in aluminum and are ideal for low pressure hazardous area applications. Various housing options such as an over-pressure relief valve or external set point adjustment knob are available. External set point knob allows adjustment without opening the enclosure.

Attention: Check local safety rules and warnings on unit and manual for a correct use of the instrument in hazardous area.

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 1800 for non-ATEX/IECEx approved.

California Residents:  Click Here for Proposition 65 WARNING.

Product Applications

  • Hazardous area pressure switch
  • Process applications
  • Mechanical equipment control

Models & Ordering

Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

COVID-19 Update: Due to high customer demand, lead time on some products may be up to two weeks. While this is a developing health situation, we are working continuously to take the necessary measures to ensure that the products you need are available with minimal interruption.

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Specifications

Service:
Air and non-combustible, compatible gases.
Wetted Materials:
Consult factory.
Temperature Limits:
-30 to 180°F (-34 to 82.2°C); 1823-00, -20 to 180°F (-28.9 to 82.2°C) (Note: Product temperature limits differ from case).
Pressure Limits:
See pressure limit chart on the catalog page.
Switch Type:
SPDT.
Repeatability:
±2% FS.
Electrical Rating:
15 A @ 120-480 VAC, 60 Hz. Resistive 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC, 60 Hz. De-rate to 10 A for operation at high cycle rates.
Mounting Orientation:
Diaphragm in vertical position.
Set Point Adjustment:
Screw type inside mounting spud internal to switch. External set point adjustment knob optional.
Enclosure Rating:
IP66.
Housing Material:
Aluminum.
Finishing:
Texture epoxy coat RAL7015.
Process Connections:
1/8" NPT female brass (SS optional).
Electrical Connections:
Two 1/2" NPT female. Cable gland not included.
Weight:
10.5 lb (4.8 kg).
ATEX Certificate:
EPT 19 ATEX 3192 X.
Agency Approvals:
ATEX Compliant: CE 0477 EX II 2G Ex db IIC T5, T6 Gb -60°C ≤Ta ≤+50°C (T6) -60°C ≤Ta ≤+60°C (T5) II 2D Ex tb IIIC T75 °C Db IECEx Compliant: Ex db IIC T5, T6 Gb -60°C ≤Ta ≤+50°C (T6) -60°C ≤Ta ≤+60°C (T5) Ex tb IIIC T75°C Db.

Features

  • Compact size and repeatability provides a high-value switch for many industrial applications
  • External set point knob provides easy access that simplifies making adjustments without opening enclosure
  • Flameproof enclosure protects the device in hazardous areas

Model Chart

     SERIES AT-1800 SERIES PRESSURE SWITCH          
     
     AT-101NA-1823-X-XXXX  AT-1800 PR SW W/ ATEX ENCLOSURE
  
          1ST SYMBOL (1ST X) RANGE
             00    0.08 - 0.22 IN WC
             0     0.15 - 0.50 IN WC
             1     0.3 - 1.0 IN WC
             2     0.5 - 2.0 IN WC
             5     1.5 - 5.0 IN WC
             10    2.0 - 10.0 IN WC
             20    3.0 - 22.0 IN WC
             40    5.0 - 44.0 IN WC
             80    9.0 - 85.0 IN WC
  
          2ND SYMBOL (2ND X) COVER
             B     BLIND
  
          3RD SYMBOL (3RD X) PRESSURE PORT/VALVE MATERIAL
             1     BRASS
             2     STAINLESS STEEL
  
          4TH SYMBOL (4TH X) PRESSURE PORT/VENTING VALVE
             VS0   STD PRESSURE PORT 1/8” FEMALE NPT/NO VENTING VALVE
             VL0   LD PRESSURE PORT 1/8” FEMALE NPT/NO VENTING VALVE
             VS1   STD PRESSURE PORT 1/8” FEMALE NPT/STD VENTING VALVE
             VS2   STD PRESSURE PORT 1/8” FEMALE NPT/LD VENTING VALVE
             VL1   LD PRESSURE PORT 1/8” FEMALE NPT/LD VENTING VALVE

          4TH SYMBOL (4TH X) CABLE ENTRY
             12    1/2" NPT ANSI/ASME B1.20.1

Product Literature

Manuals

Catalog Pages

Approvals

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