Ptronik Pty Limited
ABN: 31 003 718 161
17 Windsor Street
RICHMOND NSW 2753
AUSTRALIA
TEL: +61 2 4578 9611
FAX: +61 2 4578 9622
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DPT differential pressure transmitter

The DPT700 is a low differential pressure sensor suitable for air, or electricaly non-conducting gases. The sensor is a true two-wire device and delivers a 4 to 20 mA output signal proportional to differential pressure. The unit is calibrated at the factory using a 250 ohm load at 24 VDC and should require no field adjustment. However, the offset and gain adjustments are accessible.

Zero Adjustment:

The zero may be adjusted with pressure ports open to atmosphere while monitoring the current output. Adjust the offset potentiometer until the reading is 4 mA.

Full scale Adjustment:

This adjustment should only be performed by using an accurate pressure standard. With full scale pressure ( 400mmH2O) applied to the high pressure port and low pressure port open to atmosphere, adjust the gain potentiometer to 20mA.

SPECIFICATIONS:

• Supply Voltage: 24VDC other supply voltages on request
• Diff.Pressure: 0 - 400mm H2O ( approx. 0 - 4.0 KPA)
• Overpressure: 20 psi
• Output Signal: 4 - 20 mA
• Temperature: -25deg.C to + 75deg.C
• Accuracy: at 25deg.C = 0.05%
• Additional Temp.Error: 0.1% per deg.C deviation from 25 deg.C

DIMENSIONS:

The DPT700 is fitted in a IP66 plastic enclosure 140x80x65mm with two bulkhead fittings for 6mm OD tubing and one cable gland.

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