Series AT-DHC ATEX/IECEx Approved Digihelic® Differential Pressure Controller

Name: Series AT-DHC ATEX/IECEx Approved Digihelic® Differential Pressure Controller
Brand: Series AT-DHC ATEX/IECEx Approved Digihelic® Differential Pressure Controller
SKU: SERIES AT-DHC
Availability: InStock

Series DHC with Flameproof ATEX/IECEx Enclosure

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The Series AT-DHC ATEX/IECEx Approved Digihelic® Differential Pressure Controller is a 3-in-1 instrument possessing a digital display gage, control relay switches, and a transmitter with both current and voltage outputs. Combining these 3 features allows the reduction of several instruments with one product, saving inventory, installation time, and cost. The Series AT-DHC ATEX/IECEx Approved Digihelic® differential pressure controller is the ideal instrument for hazardous area pressure, velocity, and volumetric flow applications reading in several commonly used engineering units with optional unidirectional or bidirectional ranges. These units achieve a 1.5% or better accuracy on extremely low ranges, and 0.5% accuracy for ranges at or above 1 in w.c. Calibration can be performed in the field (in safe zone only) making maintaining its accuracy more manageable. Additionally, the Series AT-DHC Digihelic® differential pressure controller includes 2 SPDT control relays with adjustable deadbands. Programming the unit is simple using the built-in menu. With scalable 4-20 mA, selectable voltage process outputs, and selectable Modbus® or BACnet communication, this controller can easily fit into your application. Flameproof enclosures are available in aluminum and can include a glass window for viewing process information and set point status on the digital display.

Please see Series DHC for non-ATEX/IECEx approved.

California Residents: Click Here for Proposition 65 WARNING.

Product Applications

Hazardous area pressure, velocity, and volumetric flow measurement and switching

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Specifications

Service:: Air and non-combustible, compatible gases.
Wetted Materials:: Consult factory.
Accuracy:: ±0.5% FSO for all ranges, except 0.5 in w.c. @ ±1% FSO, and ranges at or below ±0.25 in w.c. @ ±1.5% FSO.
Stability:: < ±1% / year FSO.
Temperature Limits:: -4 to 158°F (-20 to 70°C). (Note: Product temperature limits differ from case).
Pressure Limits:: See pressure limit chart.
Power Requirements:: 12-28 VDC, 12-28 VAC 50 to 400 Hz.
Output Signal:: 4-20 mA (4-wire); 0-10 V, 0-5 V, 1-5 V, and 2-10 V (4-wire).
Response Time:: 400 ms (damping set to 0).
Zero and Span Adjustments:: Accessible via menus in safe zone only.
Power Consumption:: 3 VA max.
Display:: Backlit LCD display, LED setpoint indicators.
Mounting Orientation:: Not position sensitive.
Enclosure Rating:: IP66 (IP65 for versions VS1, VS2, and VL1).
Housing Material:: Aluminum.
Finishing:: Texture epoxy coat RAL7038.
Process Connections:: 1/8˝ female NPT ports.
Electrical Connections (Device):: 15 pin male high density D-sub connection; 18˝ (46 cm) cable with 15 conductors included.
Electrical Connections (Enclosure):: Two 1/2˝ NPT female. Cable gland not included.
Switch Type:: 2 SPDT relays.
Electrical Rating:: 1 A @ 30 VAC/VDC.
Set Point Adjustment:: Adjustable via menus in safe zone only.
Communication:: BACnet MS/TP or Modbus® RTU.
Supported Baud Rate:: 9600, 19200, 38400, 57600, 76800, 115200.
Device Load:: 1/8 unit load.
Thermal Effects:: 0.02% FS / °F (0.036% FS / °C).
Weight:: 12.3 lb (5.6 kg).
ATEX Certificate:: INERIS 21ATEX0033X.
IECEx Certificate:: IECEx INE 21.0064X.
Compliance:: 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.

Features

All the capabilities and value of the Series DHC in an ATEX/IECEx approved enclosure
Long service life and minimized downtime due to durable, rugged housing and high-quality components
High impact strength and high temperature rated for applications where hazardous environments exist

Support Library

Product Literature

Manuals

Catalog Pages

Series AT-DHC Catalog Page

Approvals

Drawings

Model Chart

AT-DHC PRESSURE CONTROLLER WITH ATEX ENCLOSURE                  
     
     AT-101NA-DHC-X-XXXX        
          
         1ST SYMBOL (1ST X) RANGE
           002    0.25 INWC
           003    0.5 INWC
           004    1 INWC
           006    2.5 INWC
           008    5 INWC
           009    10 INWC
           010    25 INWC
           011    50 INWC
           012    100 INWC
           202    ±0.25 INWC
           203    ±0.5 INWC
           204    ±1 INWC
           206    ±2.5 INWC
           208    ±5 INWC
           209    ±10 INWC
           053    60 PA
           055    125 PA
           056    250 PA
           253    ±60 PA
           255    ±125 PA
           256    ±250 PA
           082    6 MMWC
           084    25 MMWC
           282    ±6 MMWC
           284    ±25 MMWC

         2ND SYMBOL (2ND X) HOUSING COVER
            B     BLIND
            W     GLASS WINDOW
             
         3RD SYMBOL (3RD X) PRESSURE PORT/VENTING 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
            
         5TH SYMBOL (5TH X) CABLE ENTRY
            12    1/2" NPT ANSI/ASME B1.20.1

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