Verification of instrument stability over time.
Description: A canister
containing 2 standards which simulate a low and a high
2 fixed pins on light shroud with holes in the canister
then lock in position by tightening thumbscrew.
Use: As a stability
check – With the MCT set to the same CAL channel
as used to measure the product, note down the MCT reading
from the low side of the cannister. Undo the thumbscrew
holding the canister in position, invert it, then retighten.
Note the MCT reading again. Future readings, taken at
two weekly or monthly intervals should lie within +/-
0.2* of the initial recorded value, if this isn't the
case, the gauge may not be functioning optimally.
* With a span of
25. higher spans will give rise to larger deviations
from the initial calcheck readings.
Note: Cal Checks
can also be used for an approximate calibration transfer,
please see Installation Manual for details.