Series-AT-3000MR-MRS

ATEX/IECEx Photohelic® Switch/Gage for Differential Pressure Measurement

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Gage reading unaffected by switch operation and will continue to read pressure even during power loss
Zero and range adjustments outside of gage means no disassembly in normal service
Solid-state design allows for switching in high cycle rate applications without degradation
Flameproof enclosure with optional glass window and aluminum housing protects the device in hazardous areas while giving local visibility to process pressure and set point status
Increased response time at low pressures with LD port configuration

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12 Variations available

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Product Overview

Accuracy Detail ± 2% of FS at 70°F (21.1°C); ± 3% on -0 , -60 PA and ± 4% on -00 models
Approvals ATEX Certificate: INERIS 21ATEX0033X, IECEx Certificate: IECEx INE 21.0064X
Compliance CE, Ex
Compliance Note ATEX: 0080 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: Ex db IIC T5, T6 Gb -60°C≤Ta≤+50°C (T6) -60°C≤Ta≤+60°C (T5) Ex tb IIIC T75°C Db
Dial Dia 4 in
Electrical Connection 1/2 in NPT female Conduit with Screw Terminal block
Materials Aluminum
Materials, Wetted Consult Factory
Media Compatibility Air, Argon, Carbon dioxide, Helium, Nitrogen, Non-Corrosive Dry Gases
Mounting Orientation Vertical Diaphragm
Measurement Pressure, Min 0 inH₂O
Measurement Pressure Type Differential
Process Connection Note 1/8˝ NPT female brass (SS optional)
Process Connection Size 1/8 in
Process Connection Type NPT Female
Set Point Adjustment Adjustable Knobs
Weight 13.2 lb

Using solid state technology, the Series AT-3000MR/MRS ATEX/IECEx Approved Photohelic® Switch/Gage combines the functions of a precise, highly repeatable differential pressure switch with a large easy-to-read analog pressure gage. Gage reading is unaffected by switch operation and will indicate accurately even if power is interrupted. AT102-3000MR series employ versatile electromechanical relays with low amperage ratings-ideal for dry circuits. For applications requiring high cycle rates, choose AT102-3000MRS models with SPST (NO) solid state relays. Easy to adjust set point indicators are controlled by knobs located on the gage face (accessible opening case after de-energizing instrument). All models provide both low and high limit control. Compatible with air and other non-combustible, non-corrosive gases. Flameproof enclosures are available with glass window which allows for viewing of set point needles and process pressure. Compatible with air and other non-combustible, noncorrosive gases.

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 3000MR/MRS for non-ATEX/IECEx approved.

California Residents: Click Here for Proposition 65 WARNING.