Series AT-3000MR/MRS ATEX/IECEx Approved Photohelic® Switch/Gage

3000MR or 3000MRS Series in Flameproof ATEX/IECEx Enclosures

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.

Product Applications

  • Hazardous area pressure measurement and switching
  • Pneumatic conveying
  • Air conditioning systems
  • Clean rooms
  • Fume exhaust systems

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

Build Your Custom Part. Use our Product Configurator

Specifications

Service:
Air and non-combustible, compatible gases.
Wetted Materials:
Consult factory.
Housing Material:
Aluminum.
Finishing:
Texture epoxy coat RAL7015.
Accuracy:
±2% of FS at 70°F (21.1°C). ±3% on -0, -60 Pa and ±4% on -00 models.
Pressure Limits:
See pressure limit chart on the catalog page.
Temperature Limits:
20 to 120°F. (-6.67 to 48.9°C). Option LT low temperature to -20°F (28.8°C) (Note: Product temperature limits differ from case).
Power Requirements:
24 VDC, regulated ±10%.
Electrical Wiring:
Screw terminals.
Mounting Orientation:
Diaphragm in vertical position.
Enclosure Rating:
IP66.
Process Connections:
1/8" NPT female brass (SS optional).
Electrical Connections:
Two 1/2" NPT female. Cable gland not included.
Dial Size:
4" (101.6 mm).
Set Point Adjustment:
Adjustable knobs on face behind enclosure cover. Follow instructions and safety warnings to open cover.
Weight:
13.2 lb (6 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.

SWITCH SPECIFICATIONS (3000MR)
Switch Type:
Each set point has 1 Form C relay (SPDT).
Relay Contacts:
(resistive load) 1 Form C rated 1.0 A @ 30 VDC, 0.3 A @ 110 VDC or 0.5 A @ 125 VAC. Gold over clad silver - suitable for dry circuits.

SWITCH SPECIFICATIONS (3000MRS)
Switch Type:
Each set point has a solid state relay.
Switching Voltage:
20 to 280 VAC (47 to 63 Hz).
Switching Current:
1.0 amp (AC) max., 0.01 mA (AC) min., (2) SPST NO.

Features

  • 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

Model Chart

    SERIES AT-3000MR/MRS SERIES PHOTOHELIC GAGE           

     AT-102NA-XX-X-X-XX-XXXX MR/MRS PHOTOHELIC GAGE W/ ATEX ENCL

          1ST SYMBOL (1ST X) RANGE      
             3000       REQUIRES PICK FROM ADDITIONAL RANGES
             3300       REQUIRES PICK FROM ADDITIONAL RANGES
             3001       0-1    IN WC
             3002       0-2    IN WC
             3003       0-3    IN WC
             3004       0-4    IN WC
             3005       0-5    IN WC
             3006       0-6    IN WC
             3008       0-8    IN WC
             3010       0-10   IN WC
             3015       0-15   IN WC
             3020       0-20   IN WC
             3025       0-25   IN WC
             3030       0-30   IN WC
             3040       0-40   IN WC
             3080       0-80   IN WC
             3100       0-100  IN WC
             3150       0-150  IN WC
             3301       .5-0-.5   IN WC
             3302       1-0-1     IN WC
             3304       2-0-2     IN WC
             3310       5-0-5     IN WC
             3320       10-0-10   IN WC
             3330       15-0-15   IN WC
             3201       0-1    PSID
             3202       0-2    PSID
             3203       0-3    PSID
             3204       0-4    PSID
             3205       0-5    PSID

          2ND SYMBOL (2ND X) ADDITIONAL RANGES
          (ONLY WITH RANGE 3000)
             00N    0.05-0-0.2 IN WC
             00     0-0.25 IN WC
             0      0-0.5 IN WC
             0      0.25-0-0.25 IN WC
             00AV   0-.25 IN WC & 300-2000 FPM AV
             0AV    0-.5  IN WC & 500-2800 FPM AV
             6MM    0-6    MM WC
             10MM   0-10   MM WC
             25MM   0-25   MM WC
             50MM   0-50   MM WC
             80MM   0-80   MM WC
             100MM  0-100  MM WC
             20MM   10-0-10  MM WC
             30MM   15-0-15  MM WC
             40MM   20-0-20  MM WC
             15CM   0-15   CM WC
             20CM   0-20   CM WC
             25CM   0-25   CM WC
             50CM   0-50   CM WC
             80CM   0-80   CM WC
             100CM  0-100  CM WC
             150CM  0-150  CM WC
             200CM  0-200  CM WC
             250CM  0-250  CM WC
             300CM  0-300  CM WC
             4CM    2-0-2   CM WC
             10CM   5-0-5   CM WC
             20CM   10-0-10 CM WC
             30CM   15-0-15 CM WC
             60PA   0-60   PA
             125PA  0-125  PA
             250PA  0-250  PA
             500PA  0-500  PA
             750PA  0-750  PA
             120PA  60-0-60  PA
             250PA  125-0-125 PA
             500PA  250-0-250 PA
             1KPA   0-1   KPA
             1.5KPA 0-1.5 KPA
             2KPA   0-2   KPA
             3KPA   0-3   KPA
             4KPA   0-4   KPA
             5KPA   0-5   KPA
             8KPA   0-8   KPA
             10KPA  0-10  KPA
             15KPA  0-15  KPA
             20KPA  0-20  KPA
             25KPA  0-25  KPA
             30KPA  0-30  KPA
             1KPA   .5-0-.5   KPA
             3KPA   1.5-0-1.5 KPA
             20MBAR  0-20  MBAR
             100MBAR 0-100 MBAR

          3RD SYMBOL (3RD X) GAGE TYPE
             MR     MR PHOTOHELIC GAGE
             MRS    MRS PHOTOHELIC GAGE

          4TH SYMBOL (4TH X) POWER REQUIREMENTS
             24VDC  24 VDC
             24VAC  24 VAC

          5TH SYMBOL (5TH X) CONSTRUCTION
             XX     STANDARD CONSTRUCTION
             XSF    SILICONE FREE

          6TH SYMBOL (6TH X) TEMPERATURE RATING
             X      STANDARD
             LT     LOW TEMPERATURE OPTION

          7TH SYMBOL (7TH X) COVER
             B      BLIND
             W      GLASS WINDOW

          8TH SYMBOL (8TH X) PRESSURE PORT/VENT VALVE MATERIAL
             1      BRASS
             2      STAINLESS STEEL

          9TH SYMBOL (9TH 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

         10TH SYMBOL (10TH X) TAG
             12    1/2" NPT ANSI/ASME B1.20.1

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