Specification :

SPECIFICATION
Insulation
Nominal test voltages
MIT40X 10 V to 100 V variable ( 1 V increments)
Insulation resistance range ( at maximum test voltage)
MIT40X 20 G½
Range Full Scale Accuracy
All ranges ± 2% ± 2 digits up to 100 M½ .
All ranges ± 2% ± 2 digits up to 100 M½ .
Then:
1000 volts ± 3% ± 2 digits ± 0.2% per G½
500 volts. ± 3% ± 2 digits ± 0.4% per G½
250 volts. ± 3% ± 2 digits ± 0.8% per G½
100 volts. ± 3% ± 2 digits ± 2.0% per G½
50 volts. ± 3% ± 2 digits ± 4.0% per G½
10 volts ± 3% ± 2 digits ± 2.0% per 100 M½
Analogue range: 1 G½ full scale
Short Circuit Current: 2 mA + 0% -50%
Terminal voltage: -0% + 20% ± 1 V
MIT40X ± 1 V
Test Current on load:
1 mA at min. pass value of insulation specified in BS7671, HD384
and IEC364, 2 mA max.
EN61557 Operating range: 0, 10 M½ to 1, 00 G½
Leakage current range 10 ¼ A 2000 ¼ A
Leakage current: 10% ± 3 digits
Voltage display: 3% ± 3 digits ± 0.5% of rated
voltage
Polarisation Index ( PI) : 10 min / 1minute ratio
Dielectric Absorption Ratio ( DAR) : 60 sec / 30 sec ratio
Notes:
( 1) All ranges measure from 0, 00 M½ upwards.
( 2) Above specifications only apply when high quality silicone leads
are being used.
Continuity
Measurement: 0, 01 ½ to 99, 9 ½ ( 0 to 100 ½ on
analogue scale)
Accuracy: ± 2% ± 2 digits ( 0 to 100 ½ )
Open circuit voltage: 5 V ± 1 V
Test current: 205 mA ( ± 5 mA)
( 0.01 ½ to 9.99 ½ )
20mA ( ± 1 mA )
( 10.0 ½ to 99.9 ½ )
Zero offset at probe tips: 0, 10 ½ typical
Lead resistance zeroing: Up to 9.99 ½
Buzzer: Variable limit 1 ½ , 2 ½ , 5 ½ ,
10 ½ , 20 ½
Resistance
Measurement: 0.01 k½ to 1000 k½ ( 0 to 1 M½
on analogue scale)
Accuracy: ± 3% ± 2 digits up to 50 k½
then ± 5% ± 2 digits
Open circuit voltage: 5 V ± 1 V
Short circuit current: 1.5 mA ± 0.2 mA
Voltage range
0 to 600 V d.c. ± 2% ± 2 digits
10 mV to 600 V TRMS sinusoidal ( 40 to 400 Hz) ± 2% ± 2 digits
0 to 1000 V on Analogue scale
Unspecified input level 0 - 10 mV ( 40 to 400 Hz)
For non-sinusoidal waveforms additional specification
apply:
± 3% ± 2 digits 101 mV to 600 V TRMS and ± 8% ± 2 digits 10 mV to
100 mV TRMS
Default Voltmeter: Operates at > 25 V a.c. or d.c.
on any range except OFF
Frequency: 40-450 Hz ( 40 Hz - 99.9 Hz)
± 0.5% ± 1 digit ( 100 Hz to
450 Hz)
Capacitance measurement
MIT420, MIT430
Measurement range: 100 pF to 10 ¼ F
Accuracy: ± 5.0% ± 2 digits
Distance by capacitance:
MIT420, MIT430
Arithmetic conversion from capacitance measurement on
Default capacitance measurement: 50nF/ km
Capacitance range: 40 nF/ km to 60 nF/ km
Result storage
Capacity: > 1000 test results
Download: Bluetooth wireless
Bluetooth Class: Class II
Range: up to 10 m
Power Supply:
5 x 1, 5 V cells type IEC LR6 ( AA, MN1500, HP7, AM3 R6HP) Alkaline
NiMH rechargeable cells may be used.
Battery life: 2200 insulation tests with duty cycle of 5 sec ON / 55
sec OFF @ 1000 V into 1 M½
Dimensions
Instrument: 220 x 92 x 50 mm ( 8.66 in. x 3.63 in. x 1.97 in.)
Instrument + case: 456 x 178 x 89 mm ( 18 in. x 7 in. x 3.5 in.)
Weight
Instrument only: 590 gms, 775 gms with boot ( 20.73 oz.
27.22 oz.)
Instrument plus case: 1.75kg ( 3.86 lb)