METREL TeraOhm, User Manual

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TeraOhm 5kV
35
Capacitance
Measuring range C: 50
µ
F*
Display range C Resolution Accuracy
0
÷
99.9 nF
0.1 nF
100
÷
999 nF
1 nF
1
÷
50
µ
F
10 nF
±
(5 % of r 2 digits)
*Full-scale value of capacitance is defined according to the following equation:
C
FS
= 10
µ
F * U
test
[kV]
Polarization index PI
Display range PI Resolution Accuracy*
0
÷
99.9
0.01
±
(5 % of r 2 digits)
Dielectric discharge test DD
Display range DD Resolution Accuracy*
0
÷
99.9
0.01 ±
(5 % of r 2 digits)
Capacitance range for DD test: 5 nF to 50
µ
F.
8.2. General specifications
Battery power supply .....................................7.2 V – 9 V DC (6 × 1.2V NiCd or NiMH
IEC LR14)
Mains power supply .......................................230V AC (+6/-10 %) 45 Hz – 65 Hz, 25 VA
Optional on request........................................115V AC (+6/-10 %) 45 Hz – 65 Hz, 25 VA
Protection classification..................................double insulation
Over-voltage category....................................CAT III 600 V
Pollution degree .............................................2
Degree of protection ......................................IP 44
Dimensions (w × h × d) ..................................26.5 × 11 × 18.5 cm
Weight (without accessories, with batteries) ..2.1 kg
Visual and sound warnings ............................yes
Display ...........................................................LCD dot matrix with backlight - (160 x 116)
Memory ..........................................................Non-volatile internal memory 1000
measurements with time and date.
Working temperature range ...........................-10
÷
50 °C
Nominal (reference) temperature range .........10
÷
30 °C
Storage temperature range ............................-20
÷
+70
°
C.
Maximum humidity ........................................95 % RH (0
÷
40 °C) non-condensing
Nominal (reference) humidity range ...............40
÷
60 % RH
AUTOCALIBRATION
Auto-calibration of measuring system ............every time after turning power on
CONNECTING SYSTEM
Three safety banana sockets.........................+OUT, -OUT and GUARD.
Guard resistance............................................300 k
Ω