4.3C Setting Up the Analogue Retransmission
All analogue retransmission outputs are calibrated to the cell thermocouple input range. The input must be set up for a type K
thermocouple, with °C display units, to give the widest span (and hence the maximum accuracy), as follows:
COMMISSIONING
No of An Tx
or
Enter
Cell T/C?
Enter
Temp
DISPLAY TEMPERATURE
Cell temp in
Enter
12
Select the Commissioning Pag .
3 Times
Number of Retransmission Outputs
& ENT
Identify the number of retransmission modules fitted – see Fig. 3.4C on page
4.
Make a note of the retransmission range(s) and then reset it for 4 to 20mA
operation – see Section 6.2 in ZMT/0011.
Set the number of retransmission outputs being used (2 maximum on basic
analysers).
Store.
Advance to cell thermocouple parameter.
Cell Thermocouple
yes
& ENT
no
& ENT
Select cell thermocouple.
yes
& ENT
Store.
Select the Display Temperature Page.
Operate for approximately three seconds to gain access to the SECURE
PARAMETERS within the Temperature Page.
Advance to SECURE PARAMETERS .
4 Times
SECURE PARAMETE
°C or
Cell Temperature, Display Units
°F or
Select °C display units.
°C or
Store.
Advance to next parameter.
Continued opposite.
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