27
15
Calibration Data Example
A maximum of five points may be entered, shown as Pnt 1 to Pnt 5 for the temperature point
and Ofs 1 to Ofs 5 for the offset values.
The Pnt values must be entered in ascending order.
Set a Pnt to a value lower than the previous point to disable it.
The indicator would be programmed with the following data:
Pnt 1 100
Ofs 1 0.8
Pnt 2 300
Ofs 2 1.1
Pnt 3 500
Ofs 3 2.1
Pnt 4 -999
Ofs 4 0
Pnt 5 -999
Ofs 5 0
15.1
Connecting A 4-20mA Current Transmitter
The transmitter should be powered externally, a 2.49 Ohm current sense resistor is fitted
internally to the equipment and this allows the indicator to read mA input.
To scale the linear to display temperature:
1
The scaling can be configured in the CAL sub-menu within CONF menu.
2
Access the Input sub-menu by pressing the Page button.
3
Set the input type to mV.
4
Press again to enter the mv.hi value (see table below)
5
Press again to enter the mv.lo value (see table below)
6
Press again to enter the rng.hi value (see table below)
7
Press again to enter the rng.lo value (see table below)
8
To exit press Page and Scroll buttons together and select level 1 using the up/down
buttons.
Summary of Contents for VENUS 4951 BASIC
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