Series AT-A3000 ATEX/IECEx Approved Photohelic® Pressure Switch/Gage

Photohelic® Switch/Gages in Flameproof ATEX/IECEx Enclosures

Flameproof approved Series AT-A3000 ATEX/IECEx Approved Photohelic® Pressure Switch/Gage functions as versatile, highly repeatable pressure switch combined with a precise pressure gage employing the time-proven Magnehelic® gage design. The Photohelic® switch/gage measures and controls positive, negative or differential pressures of air and compatible gases. Two photo-transistor actuated, DPDT relays are included for low/high limit control. Easy-to-adjust set point indicators are controlled by knobs located on the gage face (accessible opening case after de-energizing instrument). Set points can be interlocked to provide variable dead band which is ideal for control of fans, dampers, etc. Gage reading is continuous and unaffected by switch operation, even during loss of electrical power. Flameproof enclosures are available in aluminum with a glass window which allows for viewing of set point needles and process pressure.

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 A3000 for non-ATEX/IECEx approved.

California Residents:  Click Here for Proposition 65 WARNING.

Product Applications

  • Hazardous area pressure measurement and transmitter
  • 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 and ±4% on -00 models.
Pressure Limits:
See pressure limit chart on catalog page.
Temperature Limits:
20 to 120°F (-6.67 to 48.9°C) LT low temperature option to -20°F available (Note: Product temperature limits differ from case).
Dial Size:
4" (101.6 mm).
Mounting Orientation:
Diaphragm in vertical position.
Set Point Adjustment:
Adjustable knobs on Photohelic® gage face behind enclosure cover. Follow instructions and safety warnings to open cover.

SWITCH SPECIFICATIONS
Switch Type:
Each set point has 2 form C relays (DPDT).
Repeatability:
±1% of FS.
Electrical Rating:
10 A @ 28 VDC, 10 A @ 120, 240 VAC.
Electrical Wiring:
Screw terminals.
Power Requirements:
120 VAC, 50/60 Hz; 240 VAC and 24 VAC power optional.
Enclosure Rating:
IP66 (IP65 for versions VS1, VS2, VL1).
Process Connections:
1/8" NPT female brass (SS optional).
Electrical Connections:
Two 1/2" NPT female. Cable gland not included.
Weight:
19.8 lb (9 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

  • Saves inventory, installation time, and money by consolidating several instruments into one ATEX/IECEx approved product
  • 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

     AT-102PA-X-X-X-XXXX   PHOTOHELIC GAGE  W/ ATEX ENCLOSURE

          1ST SYMBOL (1ST X) RANGE       
             A3000-00N      0.05-0-0.2  IN WC
             A3000-00       0-0.25  IN WC 
             A3000-0        0-0.5  IN WC
             A3001          0-1    IN WC
             A3002          0-2    IN WC
             A3003          0-3    IN WC
             A3004          0-4    IN WC
             A3005          0-5    IN WC
             A3006          0-6    IN WC
             A3008          0-8    IN WC
             A3010          0-10   IN WC
             A3015          0-15   IN WC
             A3020          0-20   IN WC
             A3025          0-25   IN WC
             A3030          0-30   IN WC
             A3040          0-40   IN WC
             A3050          0-50   IN WC
             A3060          0-60   IN WC
             A3080          0-80   IN WC
             A3100          0-100  IN WC
             A3150          0-150  IN WC

             A3300-0        0.25-0-0.25  IN WC
             A3301          0.5-0-0.5  IN WC
             A3302          1-0-1  IN WC
             A3304          2-0-2  IN WC
             A3310          5-0-5 IN WC
             A3320          10-0-10   IN WC
             A3330          15-0-15 IN WC

             A3000-00AV     0-0.25 IN WC & 300-2000   FPM AV
             A3000-0AV      0-0.5 IN WC & 500-2800   FPM AV
             A3001AV        0-1 IN WC & 500-4000   FPM AV
             A3002AV        0-2 IN WC & 1000-5600  FPM AV
             A3010AV        0-10 IN WC & 2000-12500 FPM AV

             A3201          0-1  PSID
             A3202          0-2  PSID
             A3203          0-3  PSID
             A3204          0-4  PSID
             A3205          0-5  PSID

             A3000-6MM      0-6    MM WC
             A3000-10MM     0-10   MM WC
             A3000-25MM     0-25   MM WC
             A3000-50MM     0-50   MM WC
             A3000-80MM     0-80   MM WC
             A3000-100MM    0-100  MM WC

             A3300-20MM     10-0-10  MM WC
             A3300-30MM     15-0-15  MM WC
            
             A3000-15CM     0-15   CM WC
             A3000-20CM     0-20   CM WC
             A3000-25CM     0-25   CM WC
             A3000-50CM     0-50   CM WC
             A3000-80CM     0-80   CM WC
             A3000-100CM    0-100  CM WC
             A3000-150CM    0-150  CM WC
             A3000-200CM    0-200  CM WC
             A3000-250CM    0-250  CM WC
             A3000-300CM    0-300  CM WC

             A3300-4CM      2-0-2    CM WC
             A3300-10CM     5-0-5    CM WC
             A3300-20CM     10-0-10  CM WC
             A3300-30CM     15-0-15  CM WC

             A3000-60PA     0-60   PA
             A3000-125PA    0-125  PA
             A3000-250PA    0-250  PA
             A3000-500PA    0-500  PA
             A3000-750PA    0-750  PA

             A3300-120PA    60-0-60 PA
             A3300-250PA    125-0-125 PA
             A3300-500PA    250-0-250 PA

             A3000-1KPA     0-1   KPA
             A3000-1.5KPA   0-1.5 KPA
             A3000-2KPA     0-2   KPA
             A3000-3KPA     0-3   KPA
             A3000-4KPA     0-4   KPA
             A3000-5KPA     0-5   KPA
             A3000-8KPA     0-8   KPA
             A3000-10KPA    0-10  KPA
             A3000-15KPA    0-15  KPA
             A3000-20KPA    0-20  KPA
             A3000-25KPA    0-25  KPA
             A3000-30KPA    0-30  KPA

             A3300-1KPA     0.5-0-0.5 KPA
             A3300-3KPA     1.5-0-1.5 KPA

             A3300-20MBAR   0-20 MBAR
             A3300-100MBAR  0-100 MBAR

          2ND SYMBOL (2ND X) POWER
             120VAC  POWER REQUIREMENT 120VAC
             240VAC  POWER REQUIREMENT 240VAC
             24VAC   POWER REQUIREMENT 24VAC

          3RD SYMBOL (3RD X) CONSTRUCTION
             XXX     STANDARD CONSTRUCTION
             XSFX    SILICONE FREE
             XXLT    STANDARD CONSTRUCTION AND LOW TEMP
 
          4TH SYMBOL (4TH X) COVER
             B      BLIND
             W      GLASS WINDOW

          5TH SYMBOL (5TH X) PRESSURE PORT/VALVE MATERIAL
             1      BRASS
             2      STAINLESS STEEL
  
          6TH SYMBOL (6TH X) PRESSURE PORT/VENTING VALVE
             VS0    STD PRESSURE PORT/NO VALVE
             VL0    LD PRESSURE PORT/NO VALVE
             VS1    STD PRESSURE PORT/STD VALVE
             VS2    STD PRESSURE PORT/LD VALVE
             VL1    LD PRESSURE PORT/LD VALVE
             
          7TH SYMBOL (7TH X) CABLE ENTRY
             12     1/2” NPT ANSI/ASME B1.20.1

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