EXACTUS IFD-5 and IFA-5 User Guide
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3.9 Calibration
3.9.1 Checking Calibration of the IFA-5 Analog Output Module
Calibration of the analog output is very easy and straightforward. A menu within TemperaSure
provides an easy-to-use interface for the calibration of the analog output. Checking the
calibration does not modify the calibration of the IFA-5 Module. To check the calibration,
follow the steps below. Instructions for changing the calibration follow this section. Calibration
of the analog output is not required before the first year of operation and only annually after the
first year.
To check the calibration of the IFA-5 Analog Output Module:
1.
Make sure that the IFA-5 Module and the pyrometer are disconnected from any process,
system, or tool that could be affected by readings from the IFA-5 Module or the pyrometer
itself.
2.
Verify that the voltage or current meter being used to calibrate the IFA-5 Module is properly
calibrated and its calibration is up to date.
3.
Connect the pyrometer to a computer capable of running the TemperaSure software under the
Windows
operating system. Open the TemperaSure software and verify readings are
coming from the pyrometer to the computer.
4.
Connect the meter to the IFA-5 Module. If the IFA-5 Module is to be used in voltage mode,
the meter should be connected in parallel with the output. If the IFA-5 Module is to be used
in current mode, the meter should be connected in series.
5.
Configure the IFA-5 Module for Internal Power (see instructions for Optional External
Power).
6.
Make sure the IFA-5 Module has been running for at least 30 minutes so it is fully warmed
up.
7.
Determine the COM port to which the pyrometer is connected. To determine the COM port,
click on the numbered box above the temperature readout for the pyrometer. The COM port
will be displayed in the Pyrometer section on the General tab.
8.
Under the Options menu in TemperaSure, select Configure IFA-5 Module. A calibration
menu box will pop up (see Figure 5).
9.
Using the menu, select the COM port of the pyrometer that is attached to the IFA-5 Module
and whether the IFA-5 Module is being used in voltage or current mode.
10.
Measure the voltage or current from the IFA-5 Module. For a voltage output there should be
a potential of 10 volts across the +V out and –V out terminals. For a current output there
should be a 20mA current flowing between the +I out and –I out terminals (ExtPWR and –V
out if External Power is utilized – see section on Optional External Power).
3.9.2 Adjusting Calibration of the IFA-5 Analog Output Module
To adjust the calibration of the IFA-5 Module, follow the steps outlined in the previous section.
Adjustments are made by the up and down arrows on the calibration menu box. Adjust the
calibration so the output from the module is either 10.000 volts or 20.000mA, depending on the
mode selected. Once the output is correct, press the “Save” button on the calibration menu box.
None of the adjustments will be stored until the “Save” button is pressed.
