Česky (CZK)DigiMag® Differential Pressure Transmitter
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. More
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.
The model configurator above works with INWC pressure units (inch of water column, inH₂O). 1 INWC = 249.1 Pa, see table below.
| RANGES (conversion of INWC [inH₂O] to Pa/kPa) | ||
| INWC | Pa | kPa |
| 0,100 | 24,91 | |
| 0,250 | 62,27 | |
| 0,500 | 124,5 | 0,1245 |
| 1,000 | 249,1 | 0,2491 |
| 2,500 | 622,7 | 0,6227 |
| 5,000 | 1245 | 1,245 |
| 10,00 | 2491 | 2,491 |
| 25,00 | 6227 | 6,227 |
| 50,00 | 12,45 | |
| 100,0 | 24,91 | |
SPECIFICATIONS:
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
Media Compatibility: air, argon, carbon dioxide, helium, nitrogen, non-conductive gases, non-corrosive dry gases
Long Term Stability: < ± 1%FSO/year
Process Connection Size: 1/8", 3/16", 1/4"
Operating Temperature: -20 to 70 °C
Enclosure Ratings: IP66, NEMA Type 4X
Mounting: not position sensitive
Zero and Span Setting: push buttons
Materials: polycarbonate
Size: 127 mm x 48 mm depth
Weight: 200 g
Complete informations can be found in the spec sheet (PDF), see the "Download" section.
Pressure Transducers and Transmitters
A pressure transducer, often called a pressure transmitter, is a sensor that converts pressure into an analog electrical signal. Although there are various types of transducers, one of the most common is the strain-gage wheatstone bridge pressure transducer.
The conversion of pressure into an electrical signal is achieved by the physical deformation of strain gages which are bonded into the diaphragm of the pressure transducer and wired into a wheatstone bridge configuration. Pressure applied to the transducer produces a deflection of the diaphragm which introduces strain to the gages. The strain will produce an electrical resistance change proportional to the pressure...
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