Compare M191 time interval reading the UUT preset time.
E.
Calibrator displays current time interval and current test voltage.___________________________ M191 Insulation Tester Calibrator
0. s.8 Timer mode OFF
G.
In this mode calibrator counts time for which the valid test voltage attached the output terminals. Minimum guaranteed valid test voltage which
can caught the calibrator 100 VDC. Switch output terminals the M191 ONby pushing the button OUTPUT ON.
C.000k U
STAND BY
Local
Gnd
Test- voltag 0. Green LED starts light.
- Test voltage.
B. Connect UUT the output terminals. When the test voltage disconnected UUT, calibrator stops operation, goes over statue OFF,
disconnect output terminals and hold value measured time interval and maximum test voltage which has
been detected during the period. Select requested test voltage level UUT.
F.o.
- Vmax parameter maximum test voltage which
interval the Timer calibration. Use onlytest leads with guaranteedisolationaccording totest voltage
range UUT.
Notes:
Donotdisconnectconnectionbetween UUTandM191 calibratorotherwise themeasuredvaluesarenot valid.
In STANDBY mode the calibrator waiting for test voltage. Use test leads delivered with UUT whenever possible.
has been caught the calibrator during time
calibrator output terminals during calibration
User Manual v16 17
. 2:-;
Fig. Timer mode STANDBY
- Measured time seconds with 100 resolution. Current test voltage presented the
process. When valid test voltage identified the output terminals, the calibrator goes over RUNNING statue. Select resistance range UUT necessary.
D.r.Display shows information follows (Standby mode):
MEATEST.
M191 goes over STANDBY.
11. Select TIMER mode pushing repeatedly FUNCTION FUNCTION DOWN button until TIMERlabel
appears the display.0 £
Umax:0 .229kU
OFF
Local
Grid
Test, 11a'EJe: Mode :
TIMER
ACCURACY
0. This statue signalized with the label right upper corner the display.
Operating procedure
A.002 Mode:
TIMER
ACCURACY
0 'T/
Fig.
- Accuracy the measured time interval s.0 s
Umax:0 . Select function
TIMER UUT and set-up requested time interval
