MI 3290 Earth Analyser
Instrument operation
24
Test leads resistance in Ω - Meter (200 mA and 7 mA) measurement is
compensated.
Low test current through Iron or Flex clamps. Results may be impaired.
15.10 Influence of low test current through clamps.
Negative
current
through
flex
clamps,
check
the
right
direction
of the Flex clamps
[ ↑ ↓ ].
H(C1), S(P1), ES(P2) or E(C2) terminal is not connected to the instrument or
too high resistance is detected.
Limit [ Igen >
100 µA ].
F1 - Flex clamp 1 input terminal (Synchronization port) is not connected to the
instrument. Always connect flex clamp to F1 terminal first.
Limit
With the low limit the user is allowed to set the limit resistance, current or voltage value. Measured
resistance, current or voltage is compared against the limit. Result is validated only if it is within the
given limit. Limit indication is shown in the test parameter window.
Message window:
Measurement result is inside pre-set limits (PASS).
Measurement result is out of pre-set limits (FAIL).
Measurement is aborted. Consider displayed warnings and messages.
Note:
Pass / Fail indication is only displayed if limit is set.
6.4.3 Sound indication
Two beeps
sound
PASS!
Means that the measuring result data lies inside expected limits.
One long
beep sound
FAIL!
Means that the measuring result data is out of predefined limits.
Continuous
sound
Warning!
High voltage is applied to the test terminals. Measurement will not be
started.
Limit [ > 50 Vrms H-E, S-E, ES-E, H-Guard, S-Guard, ES-Guard].
Measured value in Ω - Meter (7 mA) measurement is bellow set limit.
6.4.4 Terminal voltage monitor
The terminal voltage monitor displays on-line voltages on the test terminals H
– E and S – E.
Test terminal indication.
