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Test 1: Can the MVI be zeroed?
Zero the MVI in clean air (do not use the charcoal filter). Can the MVI be zeroed? If not, then a service is required. If
yes, then continue.
Test 2: Check for internal contamination
Using a clean piece of flat card or plastic, block the air flow to the Luer connector. This will force air to be drawn from
the internal parts and any contamination will show on the display. If the reading increases by a value greater than 5
3
ug/m
then the MVI internal parts are contaminated and service is required.
Test 3: Check for case contamination
Use a clean, dry cotton bud and scrub the lid top where dirty. Offer the bud to the luer inlet and note any reading
changes. A change of greater than 5 ug/m
Test 4: Does the MVI detect Mercury?
Using appropriate health & safety measures, present the MVI with a mercury concentration of approx 30 ug/m
Check that the MVI responds accordingly. If the instrument does not detect any mercury, the MVI will require
servicing.
Consumable items
Description
•
Zero Filter
•
PTFE Probe and pack of 10 filters
•
Manual
•
Universal Battery Charger
Calibration and Repair
The MVI requires annual calibration to maintain the best accuracy. Ion Science Ltd will calibrate the instrument
against a near Primary Standard and issue a certificate of calibration. If any calibration or repair work is required,
please return the instrument to the Service Department at Ion Science Ltd. A written estimate will be provided for all
work.
For further information please contact our Service Department on + 44 (0) 1763 208503 or via email on
service@ionscience.com and they will be pleased to assist you.
Pioneering Gas Sensing Technology.
3
indicates the case requires some cleaning.
Page 17 of 19
MVI Instrument User Manual V2.4
ionscience.com
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