Siemens 7MF4010, Instruction Manual

Page: 66 / 67

Instruction Manual 7MF4010
SITRANS P, MK
II
C73000-B5674-C100-02
68
-
Start of scale
- Apply pressure which corresponds to the start of scale to the transmitter;
with the start of scale at 0 bar establish pressure equal to atmosphere.
- Roughly set the required measuring span value by means of jumpers
Measuring span = (23 % to 50 %) of the maximum span
Measuring span = (48 % to 67 %) of the maximum span
Measuring span = (66 % to 90 %) of the maximum span
Measuring span = (85 % to 100 %) of the maximum span
- Using the zero point potentiometer (marked ”Z”), adjust the start of scale
output current.
-
F ull scale
- Apply a pressure corresponding to the full scale to the transmitter (observe
the measuring limits!).
- With the span potentiometer (marked ”S”), adjust the full scale output
current.
- After adjusting the full scale, check the start of scale and correct it if
necessary.
.
NOTE
The measuring span (full scale minus start of scale) is not changed
when the start of scale is adjusted.
The start of scale adjustment changes when the full scale is adjusted.