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16 User Manual
. Enter requested resistance value using either numerical keyboard rotary button.
In Timer function calibrator automatically connects the output terminals resistance value 100 MO. Select requested test voltage level UUT. Calibrator displays accuracy selected resistance point %.o. Select HVR mode pushing repeatedly FUNCTION FUNCTION DOWN button until HVRlabel
appears the display.5 TIMER Timer function
Timer function allows verify Timer features safety testers and megaohmmeters. Test current not displayed when set
resistance higher than 300.
- Accuracy. Switch
offthetest voltagefirstordecreaseits valuetolevellowerthanshown inthetableII. the test voltage is
higher than the limits TableII, calibrator does not execute the ONcommand. Setupresistance not changed.
E. Use test leads delivered with UUT whenever possible. Decrease test voltagebefore continue. Disconnect M191 output terminals using the button OUTPUT ON.
Operating procedure
A. Select resistance range UUTif necessary.Test current displayed only when output terminals are ON. Insteadofthis “Err1 Toohigh
test voltage! ”isdisplayed. Calibrator can measure
time interval for what the UUT test voltage presented the calibrator output terminals.
C.
F.
Change the resistance value allowedonly when attached test voltage lower than Voin TableII.
B. Use only test leads with guaranteed isolation according test voltage
range UUT.
H. Compare UUT reading M191 set resistance.
Be aware that the test voltage for high resistance
measurements dangerous and can cause
electric shock!
M191 Insulation Tester Calibrator________________________________________ MEATEST, s.
G. Switch the UUT output OFF remove test voltage from its output.
4.
Notes:
Testleads deliveredwiththe calibratorareapprovedforapplication upto5kVDC.r.
I. M191 calibrator measures the test voltage and display both test voltage and current. Connect output terminals the M191 pushing the button OUTPUT ON. UUT starts source test
voltage. During the
measurement the calibrator goes automatically through sequence statues: OFF, STANDBY, RUNNING, OFF. the test
voltageis over Voandattempt change theresistance isregistered, calibrator doesnot disconnect theoutput
terminals andshows errormessage “Err2 Set voltage bellow !”. Usetestleads deliveredwith
UUTsforhighertest voltages. Connect UUT the output terminals. Green LED starts light.
M191 starts measure test voltage and current.
J. The value
cannot modified.
D.
Before the output terminals are switched ONstate, calibrator measures test voltage.0 GQ. Confirm the value by
pushing the appropriate unit button kQ, MQ, TQ.
Don't changesetresistance value when test voltageabove Vois connectedtotheoutputterminals, see tableII. Activate UUT measurement, typically pushing button the UUT
