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
Use the bold characters from the chart below to construct a product code.
ORDER ONLINE TINE TODAY!!
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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
publication without notice. Dwyer advises its customers to obtain the latest
version of the relevant information to verify, before placing any orders, that
the information being relied upon is current.
References
Read User Manual Online (PDF format)
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