Process Sensors MCT 300, Инструкция по установке и эксплуатации

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Appendix IV - Calibration Check Standard – MCT Series
The Process Sensors Calibration Check Standard provide users of the MCT Series NIR Transmitters
with a quick way of verifying that the sensor’s calibration has not altered over time.
The standard simulates moisture levels as follows:
White: Low Moisture
Blue:
High Moisture
Connection of the Standard to the MCT Sensor
Locate the standard on the light shroud. Make sure that the two fixed pins mate with the holes in the
light tube and then tighten the thumbscrew to ‘lock’ the standard in place.
How to Use the Calibration Check Standards
The Check Standards should be used on a periodic basis, daily, weekly or monthly, to check that the
sensor is remaining stable and thus giving the correct moisture values.
The standards may be used in two ways:
a) As a quick low/high check of the sensors’ reading. In this manner it allows users to gain
confidence in the stability of the sensor and in the accuracy of the initial calibration.
b) As a way of transferring the calibration from one sensor to another. In this manner a
newly purchased or repaired sensor can be quickly put into operation without the need for
actual samples of product.
Quick Calibration Check
Using the standards to check the stability of the MCT requires that it be correctly calibrated using
samples of the product(s) on which it is measuring.
As soon as the sensor is satisfactorily calibrated, the reading of the low and high sides of the standard
need to be noted.
1. Clip the standard onto the light tube.
2. Rotate the standard selector knob to the LOW position and tighten the locking nut.
3. With the MCT set on the same CAL Channel as used to measure the product, make a note of the
MCT reading
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