4 5
TRM138
A5.7. Adjusting the instrument for operation with
0…1.0 V active transducers
.
A5.7.1 Instead of the transducer connect to the
instrument’s contacts “Input 1” the P3003 type voltage
comparator of, or any other reference voltage source with
accuracy class not less than 0.05. Connection to be
performed as per diagram presented in figure A5.5.
A5.7.2.
Power on the instrument and set “13” for
transducer dat1 in parameter
int (PL1)
, this value
corresponds to operation of TRM138 with an active transducer 0…1.0 V. At the same time set “0.0”
in
Ain.L (PL1)
parameter, and “100.0” in
Ain.H (PL1)
parameter.
Set 1000 V dc voltage at the comparator output.
Set OPERATION mode for the instrument, and after 5..10 s check DI1 indications for the
channel the comparator is connected to. These readings shall be 100.0 ± 0.2 %.
If the measurement accuracy in this point exceeds the specified value, complete the
operations specified in A5.7.3 – A5.7.4.
A5.7.3.
Carry out the adjustment following the steps illustrated in figure A5.2.
The adjustment is over, the instrument will indicate on
DI2
display the calculated thermal
couple free ends temperature which (as the referenced value) will be recorded to volatile memory
(provided that indication icon
Gt
is not available on
DI4
) by continuous depressing
button
(release the button after
CLbr
appears on
DI2
).
A5.7.4.
Check the adjustment results by reading out indications of DI1 (in OPERATION
mode), the values shall not exceed 100.0 ± 0.1 %.
A5.7.5.
Power off the instrument, and disconnect it from the voltage comparator.
A5.8. Adjusting the instrument for operation with 0…5.0 mA active transducers
.
A5.8.1.
Instead of the transducer connect to the instrument’s contacts “Input 1” the P321 type
current calibrator, or any other with accuracy class not less than 0.05. Connection to be performed
as per diagram presented in figure A5.6.
A5.8.2.
Power on the instrument and set for
transducer dat1 in parameter int (PL1) value “12”,”
correspondent to operation of TRM138 with an active
transducer 0…5.0 mA. At the same time set “0.0” in
Ain.L
(PL1)
parameter, and “100.0” in
Ain.H (PL1)
parameter.
Set 5.00 mA at the calibrator output.
Set OPERATION mode for the instrument, and
after 5..10 s check DI1 indications for the channel the
current calibrator is connected to. These values shall
correspond to 100.0 ± 0.2 %.
If the measurement accuracy in this point exceeds the specified value, complete the
operations specified in A5.8.3 – A5.8.4.
A5.8.3.
Carry out the adjustment following the steps illustrated in figure A5.2.
The adjustment is over, the instrument will indicate on
DI2
display the calculated coefficient
value which will be recorded to volatile memory (provided that indication icon
Gt
is not available
on
DI4
) by continuous depressing
button (release the button after
CLbr
appears on
DI2
).
A5.8.4.
Check the adjustment results by indications of DI1 (in OPERATION mode), the read
out values shall not exceed 100.0 ± 0.1 %.
A5.8.5.
Power off the instrument, and disconnect it from the current calibrator.
A5.9. Adjusting the instrument for operation with active transducers 4…20.0 mA and
0…20.0 mA
.
A5.9.1.
Instead of the transducer connect to the instrument’s contacts “Input 1” the current
calibrator of P321 type, or any other with accuracy class not less than 0.05. Connection to be
performed as per diagram presented in figure A5.6.
Appendix 5
Instrument Adjustment
Figure A5.5. Connection diagram
for voltage comparator
during adjustment.
Figure A5.6. Connection diagram for
current calibrator during
adjustment
Содержание TPM138
Страница 23: ...22 TRM138 Setting up Procedures Section 6 Figure 16 Programmed parameters setting diagram...
Страница 24: ...23 TRM138 Section 6 Setting up Procedures...
Страница 30: ...29 TRM138 Appendix 1 Dimensional drawing...
Страница 31: ...30 TRM138 Instrument connection Appendix 2 Figure A2 1 Instrument terminal block contacts arrangement diagram...
Страница 35: ...34 TRM138 Figure A2 10 Example of connection of various type transducers Instrument connection Appendix 2...
