WIKA D-11-7 - Manual (Page 22)

22 WIKA operating instructions pressure transmitter model D-1x-7
2478159.05 12/2011 GB/D/F/E
GB
Zero adjustment, example 2:
A pressure transmitter with a measuring range of -1 ... +2.5 bar has a zero offset of -10 mbar, then one
would correct:
Pressure range -1 ... +2.5 bar Span: 3.5 bar
Display value 10 mbar too low Offset: -0.010 bar
Span correction
Output data Input data Explanation
0x22 XX XX 0x22 HI LO Read span correction
0x24 HI LO 0x24 HI LO Write span correction
The respective correction value can be calculated as follows:
Correction value = -
Span offset
x 50,000
Span
Correction value: Digit value which is programmed into the instrument via service 0x24.
Span offset: Set span - actual span in bar
Span: Set span MBE - MBA in bar
The changes only take effect after a reset.
6. Commissioning, operation
Correction value = -
Offset x 50,000
Span
Correction value = - -0.010 bar x 50,000
3.5 bar

Correction value = +143 0x008F
Output data
0x23 0x00 0x8F