DPTM Mini Differential Pressure Transmitter-Operation Manual Edition: A/1
2
Installation
Figure 1
● Installation: it is recommended to be installed vertically with the pressure ports downwards, as shown in figure 1.
● Pressure connection: connect the tube to the two pressure ports correctly, making sure to air-tighten to prevent leakage.
● Electrical connection: wire correctly according to the wiring diagram on the front cover.
Zero reset & Calibration
● Due to different environment and sensor characteristics, after long term of using, the sensor’s accuracy maybe drift. The
transmitter should be zero reset after initial installed to meet the specified accuracy.
It is better to be “zero reset” after the initial
7 days continuous working. Usually it need to be zero reset periodically in every 6-
12 months’ working.
● Zero reset: keep the high (+) and low (-) pressure ports unconnected in stable air, or directly connect the two, press the button
“ZERO” for 5s. It means to remove the zero drift of the transmitter in order to improve the accuracy. It is recommended that
this operation to be done periodically.
● Initial zero reset: when initial power on, it should be zero reset after fully warm-up and stable, to meet the specified accuracy.
● Long term zero drift & reset: It may have long term zero drift after continuous working; customers can reset it periodically.
● Re-calibration & zero reset: when re-calibration needed, zero reset should be done first. A qualified standard manometer is
needed for re-calibration operation.
Attention
It should be power OFF during installing and wiring. When using 24VAC, it is strongly recommended to power the unit with
independent transformer. If sharing a 24VAC transformer with other equipments such as controllers, transmitters or actuators,
please make sure the terminals 24V and GND are connected correctly. Otherwise, it may reduce serious damages.
Warranty
● It has limited warranty for eighteen (18) months after the production date.
● It does not extend to any unit that has been subjected to misuse or accident.
● It is, in any event, strictly limited to the replacement or repair of the product itself.
Shenzhen TEREN Control Technology Co. Ltd.
Add: 3F, 2nd Industrial Zone, Nankeng, Longgang
District, Shenzhen,Guangdong,P.R.CHINA
Tel: 0755-23935155 Fax: 0755-23935156
web: www.teren.com.cn
TEREN website Alibaba shop
