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14.4
The Temperature Indicator: Site Models Only
The Site models include an electronic temperature indicator. The indicator can be configured for
the desired sensor type, and for custom calibration data. The customer calibration data can be
set ON or OFF.
14.5
Connecting Temperature Sensors
14.5.1
Platinum Resistance Thermometers, PRTs
Set the input type to suit from either the front panel of the Isotech Config Software utility.
PRTs can be connected to Inputs P1 and P2. When connecting a PRT ensure the corresponding
thermocouple input is not used, that is if connecting a PRT to Input P1 then Input T1 must not be
used, is if connecting a PRT to Input P2 then Input T2 must not be used.
14.5.2
Input Connections
The five pin cable plug to suit PRTs is part number 935-16-107. These are readily available,
suppliers include RS Components (Part Number 129-8573) and Farnell (Part Number 112-2585).
With three wire PRT connections ensure identical lead resistance in all three legs of the connection
by using the same length and gauge of cables.
14.5.3
Connecting Thermocouples
Set the input type to suit from either the front panel of the Isotech Config Software utility.
Thermocouples can be connected to Inputs T1, T2 and T3. When connecting a thermocouple
ensure the corresponding PRT input is not used, that is if connecting a thermocouple to Input T1
then Input P1 must not be used, is if connecting a thermocouple to Input T2 then Input P2 must
not be used.
Input connectors are the industry standard “miniature thermocouple plugs”.
14.5.4
Setting the Input Type
A 100 Ohm resistance thermometer can be connected to the PRT Connector or a thermocouple
may be connected to the miniature TC Connector.
Ensure that only a PRT or a TC is connected at any one time. If a PRT and TC are
connected simultaneously the indicator will read in error.
Check that any sensor placed into the equipment is suitable for the temperature range. Sensors
can be damaged if taken outside their normal operating limits.
Summary of Contents for VENUS 4951 BASIC
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