Yamatake STD920 User Manual

Maintenance and Troubleshooting Yamatake Corporation
7-2 ST3000 Smart Transmitter Series 900 Electronic Differential Pressure/Pressure Transmitter
7-1-2 :Zero Adjustment under Uniform Input Pressure (with SFC)
When a transmitter is used, change the applied input pressure to uniform pressure
before performing zero adjustment procedures. In some cases, factors such as the
mounting posture of the transmitter prevent an indication exactly at 0%. Perform zero
adjustment measures using these procedures. However, the zero point may also be cor-
rectly adjusted by changing the transmitters orientation.
Procedure
Calibrate the zero point based on the current input value
The current input value at zero uniform pressure is the differential pressure that is
applied to the sensor due to the influence of mounting posture, etc. Rewrite the factory
set zero point calibration data. This operation does not change the LRV or the URV. If
the current input value exceeds 3.125% of the transmitters measurement range (URL -
LRL), a warning message (*1) for this operation is displayed.
Key-pad operations:
  
Detailed procedures using an SFC as found in 5.3.1.1 Preparation for Measurement.
*1.Press the key after display of warning message Calibration value over OK?
Zero calibration normal# is displayed.
2
0mA
4mA
10kP
a
0
SHIFT
OUT-
J
PUT
INPUT
COR-
K
RECT
RESET
ENTER
( Yes )
NON-VOL
ENTER
( Yes )
NON-VOL

Yamatake STD920 Specifications

General

Brand	Yamatake
Model	STD920
Category	Transmitter
Language	English