This procedure tells you how to use the
Indigo80 handheld indicator to adjust the humidity measurement of the probe connected to the
transmitter when you have a list of previously collected calibration readings available (for
example, in a calibration certificate from a 3rd party laboratory calibration). You can
adjust the probe without having to generate the calibration conditions and wait for
stabilization.
| If you adjust the probe using
previously measured values, the device readings will be corrected and your previous
calibration certificate will not be valid anymore. If an up-to-date calibration
certificate is still needed, you must perform the calibration again to detect any remaining
measurement error after the adjustment. |
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Connect the transmitter to the indicator.
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Open the indicator main menu by pressing
.
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Select Devices. If you have more than one device connected to the indicator, make a further selection
between the devices.
In this case, select the probe connected
to the transmitter. For example, if the transmitter is connected to port
2 of Indigo80, the connected probe is identified with icon
2A on the Indigo80 display.
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If the probe connected to the transmitter supports the sensor purge feature, wait for
the start-up purge to finish or start the purge manually by selecting .
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Select Calibrate / Adjust.
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Select the type of calibration or adjustment to perform, for example, RH adjustment.
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Select Manual adjustment.
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Select Reference value, point 1.
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Use the arrow buttons to set the reference value (for example, the
reference humidity from your calibration certificate), and then select OK or Set.
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Scroll down and select the Measured value, point 1 field. Replace the automatically inserted value with your previously measured
calibration reading (for example, the observed humidity value from your calibration
certificate).
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Scroll down and select the Measured temperature, point 1 field. Select the correct unit, then replace the automatically inserted temperature
value with your previously measured value (for example, the observed temperature value
from your calibration certificate).
Scroll down and repeat for Reference value, point 2, Measured value, point 2, and Measured temperature, point 2 (if performing a 2-point adjustment).
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To store the adjustments to the probe, scroll down and select . Confirm by selecting OK.
To exit without taking the adjustment in use, press

to end
calibration.
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Update the calibration information in . Navigate to the Calibration information menu by pressing
.
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Press
to end calibration.