ABUS Technologies Fr Block Temperature Transmitter - Manual (Page 8)

ABUS TECHNOLOGIES INC.
8
Fr Block
7. OPERATION
All input types and the 4-20mA output current is factory calibrated. However, a
manual offset trim is implemented to provide fine adjustments to the signal in the field.
The offset correction can also be accomplished by factory settings.
Note: when using a Pt100 simulator, make sure the FrBlock Pt100 excitation current
(0.17 mA) s compatible with the simulator specification.
The input sensors are listed in table FrBlock Input Sensor, along with the
maximum and minimum ranges accepted by each one.
8. MAINTENANCE
Calibration of Instruments
The operation can be realized through Simulator / Decade Box and calibrate the
transmitter by zero and span, potentiometer through 2-wire system. Further check the
current 4 ~ 20 mA output signal Zero and span potentiometer is available, on the top of
instrument, for fine adjustment or calibration for the transmitters through micro screw
driver.
The set parameters use the same calibration way as standard and the
calibration. Same procedure can be repeated, at least thrice in order to calibrate the
instrument precisely.
For better calibration procedure, you may use regulated and filtered power
supply. To make 2-wire system you may refer to the connection diagram of the same
manual.