CEN-TECH 98674, Operation Manual, Page: 12 / 27

DIGITAL MULTIMETER
SPECIFICATION NTS
Input Impedance: 10M
Ω
Max. Input Voltage: 1000V DC or 750V rms AC
- By
µ
A, mA or A range:
Frequency response: 0 ~ 40kHz
Input current range: ≥ 1/4 of the rms AC for the range
(higher input voltage at higher frequency)
- Max. input current:
mA jack
（
µ
A ranges
）
: 4mA,
mA jack
（
mA ranges
）
: 400mA,
10A jack: 10A
- Overload protection:
µ
A
、
mA ranges: resettable fuses F1 500mA/250V
10A range: F2 10A/250V fuse (quick acting).
NOTE:
The range by DUTY of the Hz range is larger than that of the
voltage range or current range.
3.2.9 Relative Humidity
（
on RH and humidity display
）
Range Resolution Accuracy
20 - 95% 0.1%
±
5.0%RH
- Operating temperature: 0
℃
to 40
℃
- Sampling Period: ~20s.
- 20 -
DIGITAL MULTIMETER
SPECIFICATION NTS
3.2.10 Temperature
3.2.10.1 Temperature
（
on sensor, thermoresistor NTC and
temperature display
）
Range Resolution Accuracy
℃
0.1
℃
0
℃
to 40
℃
±
2
℃
℉
0.1
℉
32
℉
to 104
℉ ±
4
℉
- Sampling Period: ~20s.
3.2.10.2 Temperature
（
on sensor, thermocouple and main
display
）
Range Resolution Accuracy
-20
℃
to 0
℃ ±
5.0% of reading or
±
3
℃
℃
1
℃
0
℃
to 400
℃
±
1.0% of reading or
±
2
℃
400
℃
to 1000
℃ ±
2.0% of reading
-4
℉
to 32
℉
±
5.0% of reading or
±
6
℉
℉
1
℉
32
℉
to 752
℉ ±
1.0% of reading or
±
4
℉
752
℉
to 1832
℉
±
2.0% of reading
- Overload protection: resettable fuses F1 500mA/250V.
3.2.11 Sound Level
（
dB
）
Range Resolution Accuracy
40-100dB 0.1 dB
±
3.5%dB at 94dB, 1kHz sine
wave
- Typical instrument frequency range: 100 ~ 8000Hz
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