APT3100
Smart Pressure Transmitter
Operation Manual M3100-EO1G
8
Duon System Co.,Ltd.
2.5 Calibration on Spot after Installation
(1)
Sensor Zero Trim should be done after transmitter is installed on spot, because zero point is not
accurate as to mounting status.
(2) For Sensor Zero Trim, make differential pressure of transmitter for zero in advance. Then, make
Sensor Zero Trim after pressure is sufficiently stabilized (after approximately 10 seconds).
(3) There are two ways for making differential pressure for zero. One is to apply zero differential
pressure (making same pressure both high and low side pressure). The other is to close Hign and
Low side of stop valve of 3 valve manifold and to open its equalizing valve.
(4) Sensor Zero Trimming is to use HHT (275 calibrator), PC or PDA configurator, and to use Zero/Span
button. Make sure all details on this manual.
(5) Refer to On-line Operation for configuring another parameters except Sensor Zero Trim
2.6 Pressure Connections
The following precautions must be observed in order to safely operate the transmitter under pressure.
(1) Never apply a pressure higher than the specified maximum working pressure.
(2) Confirm the option of pressure connection of transmitter. Necessarily use standardized and quality-
approved parts.
(3) In case of being needed by hard circumstances and regulations, there should be seal equipment for
leakage.
2.7 Waterproofing of Cable Conduit Connections
Apply a non-hardening sealant (silicone or tape, etc.) to the threads to waterproof the transmitter cable
conduit connections.
2.8 Restrictions on Use of Radio Transceivers
▲
Warning
◈
Instrument installed in the process is under presure. Never loosen or tighten the flange bolts as it may
cause dangerous spouting of process fluid.
◈
If the accumulated process fluid may be toxic or otherwise harmful, take approriate care to avoid contack
with the bodym of inhalation of vapors even after dismounting the instrument from process line for
maintenance.
▲
Warning
◈
Although the transmitter has been designed to resist high frequency electrical noise, if a radio transeiver is
used near the transmitter of its external wiring, the transmitter may be affected by high frequency noise
pickup. To test for such effects, bring the transceiver in use slowly from a distance of several meters from
the transmitter, and observe the measurement loop for noise effects. Thereafter, always use the
transceiver outside the area affected by noise.
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