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PRESYS
Instruments
You can then return to normal operating mode down until the level zero.
Thermocouple input calibration
The thermocouple input calibration occurs in two steps. First proceeds calibrating
inputs 0-500 mV and 0-5 V as detailed by the tables above. After make mV calibrations,
access the CJC mnemonic within the ENTR option in calibration level 8 (see Figure 26).
CJC - is the corresponding mnemonic to the cold junction temperature.
Pressing ENTER after the mnemonic CJC the program automatically starts to
calculate the temperature of the cold junction. During this time the display blinks the
mnemonic CAL.
After 16 seconds the program finishes the calculation of the cold junction
temperature and the presents the value on display in °C.
This value is a first approximation of the cold junction temperature. The user
should accurately measure the temperature of the terminal block and enter the value
presented by the program in the usual way to enter parameter values explained in 3.2
Configuration section.
Finished these two steps of the calibration input for any type of thermocouple is
completed.
You can then return to normal operating mode down until the level zero.
3-wire RTD input calibration
For the 3-wire RTD input calibration connect precision resistors in the values listed
in the table below between terminals 1 and 2 with short circuit between terminals 2 and 3.
In the case of having a precision decade, ensure that the three connecting wires
have exactly the same length, gauge and material.
Output Calibration
The retransmitter output is calibrated with the help of the indicator itself.
Check if the setting of the internal jumper of the Optional Analog Output Board is
in accordance with the type of output (without jumpers for the 20 mA output, jumper 1 for
5 V and jumper 2 for 10 V).
Reference
0.000 mA
4.000 mA
8.000 mA
12.000 mA
16.000 mA
20.000 mA
Reference
100.000
250.000
DMY-2030-Light-5S-Energy
Mnemonic
C. 0nA
C. 4nA
C. 8nA
C.12nA
C.16nA
C.20nA
Mnemonic
C.100r
C.250r
Maintenance
Page 37
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