Dwyer DM-202 DM DigiMag Differential Pressure Transmitter Owner’s Manual
- June 10, 2024
- Dwyer
Table of Contents
Dwyer DM-202 DM DigiMag Differential Pressure Transmitter
Product Information
- Benefits/Features: This pressure transmitter has a 4-20 mA output signal, push-button zero and span adjustments, and is not sensitive to position.
- Applications: This transmitter is suitable for use with air and non-combustible, compatible gases.
- Description: The housing material of this pressure transmitter is polycarbonate, and wetted materials should be consulted with the factory. It has male ports on the side for 1/8, 3/16, 1/4, 5mm, and 6mm ID flexible tubing.
- Specifications:
- Output Signal: 4-20 mA (2-wire)
- Loop Resistance: 0 to 1250 max
- Current Consumption: 21 mA max
- Electrical Connections: Screw-type terminals
- Process Connections: Male ports on side for 1/8, 3/16, 1/4, 5 mm, 6 mm ID flexible tubing
- Enclosure Rating: NEMA 4X (IP66)
- Mounting Orientation: Not sensitive to position
- Size: 5 OD (127 mm) x 1.9 (48 mm) deep
- Weight: 7.04 oz (200 g)
- Compliance: CE
- Dimensions:
- High Pressure Port: 1 [25.40]
- Low Pressure Port: 1/2 [12.70]
- 1-43/64 [42.34]
- 15/64 [5.84]
- 5 [127.00]
- Options:
- -FC: Factory calibration certificate
- -LG: Light grey overlay
- -NIST: NIST traceable calibration certificate
- -SS: 304 brushed SS bezel
Product Usage Instructions
- Consult the wetted materials with the factory to ensure compatibility with the desired gases.
- Connect the electrical and process connections using the screw-type terminals and male ports provided.
- Adjust the zero and span using the push-button controls if necessary.
- Power the transmitter using a power supply of 10-35 VDC connected to the wiring diagram provided.
- Use the output signal of 4-20 mA (2-wire) to monitor the pressure of the air or compatible gas being measured.
- If necessary, order additional options such as a factory calibration certificate or NIST traceable calibration certificate.
BENEFITS/FEATURES
- Reduced installation time through zero and span controls that provides quick and easy calibration
- Fast and easy setup and calibration with push-button zero and span controls
- Immediate corrective action can be taken by local alerts via the easy-to-read LCD display
- Reduces upgrade installation costs and simplifies field upgrade from a Magnehelic® gage, as both use the same diameter cutout
APPLICATIONS
- Differential pressure across filters
- Fan control
- Static pressures in ducts or buildings
- Room pressurization monitoring
DESCRIPTION
The Series DM DigiMag® Differential Pressure Transmitter senses the pressure of air and compatible gases and sends a standard 4-20 mA output signal. The DM housing is specifically designed to mount in the same diameter cutout as a standard Magnehelic® gage. A wide range of models are available factory calibrated to specific ranges. The polycarbonate molded housing features integral pressure connections, which reduces installation time. Digital push- button zero and span simplify calibration over typical turn-potentiometers. A single push-button allows field selection of 4 to 6 engineering units, depending on the range.
SPECIFICATIONS
| Service | Air and non-combustible, compatible gases. |
|---|---|
| Wetted Materials | Consult factory. |
| Housing Material | Polycarbonate. |
| Accuracy | ±1% FSO for all ranges except 0.25 in w.c. @ ±2% FSO, and |
ranges at or below ±0.1 in w.c. @ ±4% FSO.
Stability| < ±1%/year FSO.
Pressure Limits| Ranges > 1 in w.c.: 6 psi max operation, 6 psi burst;
Ranges ≤ 1 in w.c.: 3.6 psi max operation, 6 psi burst.
Temperature Limits| -4 to 158°F (-20 to 70°C).
Thermal Effect| 0.036% FS/°C (0.02% FS/°F).
Power Requirements| 10-35 VDC (2-wire).
Output Signal| 4-20 mA (2-wire).
Zero and Span Adjustments| Push-button.
Loop Resistance| 0 to 1250 Ω max.
Current Consumption| 21 mA max.
Electrical Connections| Screw-type terminals.
Process Connections| Male ports on side for 1/8˝, 3/16˝, 1/4˝, 5 mm, 6
mm ID flexible tubing.
Enclosure Rating| NEMA 4X (IP66).
Mounting Orientation| Not sensitive to position.
Size| 5˝ OD (127 mm) x 1.9˝ (48 mm) deep.
Weight| 7.04 oz (200 g).
Compliance| CE.
DIMENSIONS/ WIRING DIAGRAM
HOW TO ORDER
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©Copyright 2022 Dwyer Instruments, LLC Printed in U.S.A. 1/23
Important Notice: Dwyer Instruments, LLC reserves the right to make
changes to or discontinue any product or service identified in this
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the information being relied upon is current.