CS 2099 Eurocheck
Eurocheck operation
19
Figure 4.4: Performing low resistance calibration using universal test cable
Step
Action
1
q
Switch on the tested instrument and select Low
Ω
function (±200 mA
measuring current).
q
Compensate measurement leads resistance (see User manual of your
instrument for further instructions).
2
q
Connect tested instrument into Eurocheck low resistance test sockets
with universal test cable, follow connection diagram shown in Figure 4.4.
3
q
It is not necessary to power on Eurocheck when performing insulation
resistance calibration
q
Observe any warnings displayed on the tested instrument. If any is
present, remove the causes before proceeding.
4
q
Perform resistance measurement with the tested instrument.
q
Write down measurement result for documentation purposes.
5
q
If measured resistance deviates significantly from reference value, it is
very likely the tested instrument is damaged. Send it to your distributor
or manufacturer for repair and/or readjustment.
6
q
Repeat steps 4 and 5 with other reference resistance values.
7
q
Select continuity function and repeat steps 4 – 6.
q
Compensation of test leads, performed in Low
Ω
function, usually applies
also for continuity measurement.
Notes
:
q
Most Metrel installation test instruments use L and N measuring leads of
universal test cable to perform low resistance measurements. However, there are
exceptions to this rule like MI 3101 – EurotestAT, which uses N and PE leads.
q
When calibrating Low
Ω
function make sure that R+ and R- values are also close
to reference value! If this is not the case, check measurement cable, or use
universal multimeter to measure reference resistors (make sure to reverse
polarity). Contact your local distributor or manufacturer for further information.
PE
N
L
