Weidmuller STG - Bridge measuring transducer - Handbuch (Seite 18)

18
•Calibration
General
All instruments are fully calibrated before leaving the factory. For best
results, you may need to adjust the zero and span after installation,
since the actual load may vary.
Equipmentrequirements
• A suitable DC millivolt source
• Two accurate digital multimeters (accurate to 0.0 mV and ±0.1 μA)
• Flat bladed screwdriver (blade width less than .4 mm / 0.1 inch)
Terminalconnectionsforworkshopcalibration
Connect Signaltype Terminal
DC millivolt source
0 V Refence (Link to Terminal 8) 6
Input signal mV (+)
7
Input signal mV (−) 8
Multimeter one
Output signal mA or V (+) 13
Output signal mA or V (−) 14
Multimeter two
TARE adjustment mV (+) Test Point (Ex+)
TARE adjustment mV (−) Test Point (Ex–)
Wire link
Excitation Voltage (+) 3
Excitation Sense (+) 2
Wire link
Excitation Voltage (−) 4
Excitation Sense (−) 1
Power supply
Neutral (−) 10
Live (+) 11
ZEROandSpANadjustment
The TARE, ZERO and SpAN controls are on the front panel of the
transmitter. Turn the control clockwise to increase adjustment.
Note: ‘zero’ means the lowest point in the signal range, so for a
4-0 mA signal, ‘zero’ is 4.00 mA. ‘Full scale’ refers to the highest point
in the signal range.