Example 2: Load Cell With Compressive Loading - HBM RM220 Bedienungsanleitung

RM4220
• Set ZERO switch to position 7 (zero = "4.0 mV/V).
• Load the transducer with the required full scale and set the voltage full scale
V (current end scale I
m
• Check that V
out
adjust the Gain (front) so that V
• Relieve the transducer, adjust Zero (front) to 5 V (12 mA).
• Check the amplification adjustment again.
• The measuring chain is now adjusted and ready for operation.

7.2 Example 2: Load cell with compressive loading

Load cell
• Resistance:
• Full bridge:
• Sensitivity
Configuration (0 mV/V for 0 V (4 mA) and 3 mV/V for 10 V (20 mA))
• Set OUTPUT switch to position 0/10 V (factory setting).
• Set 4 WIRE/6 WIRE switch to six‐wire configuration.
• Set EXCITATION switch to supply voltage 10V (factory setting).
• Set GAIN switch to position 3:
• Set ZERO switch to position 2 (zero = "0.035 mV/V).
• 3 Hz bandwidth (factory setting).
Adjustment
• Adjust with Zero on the front to 0 V (4 mA) with a voltmeter (amperemeter),
if the zero point is unstable, then change the zero point setting ZERO to
position 3 and adjust Zero again.
• Load the transducer with the required full scale.
• Adjust the Gain on the front to 10 V (20 mA) with a voltmeter
(amperemeter).
A1091-4.0 en/de
5
G +
Sensitivity @ Supply voltage
).
m
= 5 V (I = 12 mA) for the zero point, if this is not the case,
out
out
350 Ω
Six‐wire configuration
3 mV/V
10
G +
Sensitivity @ Supply voltage
= 5 V (I = 12 mA).
out
17
HBM