Specifications - Extech Instruments EX350 User Manual

6. Specifications
ELECTRICAL SPECIFICATIONS
Accuracy is given as ± (% of reading + least significant digit) at 23C ±5C with relative humidity
lower than 80%. Accuracy is specified for a period of one year after calibration.
1. Temperature Coefficient is 0.1 x specified accuracy / C, < 18C (64.5F), > 28C (82.4F)
2. AC Functionality: ACV and ACA specifications are AC coupled, True RMS, 45 to 400Hz; For
non‐sinusoidal waveforms, additional accuracy Crest Factor (C.F.) considerations exist as
detailed below:
Add 3.0% for C.F. 1.0~2.0; Add 5.0% for C.F. 2.0~2.5; Add 7.0% for C.F. 2.5~3.0
Function
DC Voltage
Input Impedance: 10M (1GΩ for mV range); Overload Protection: AC/DC 600V
AC Voltage
LPF
LoZ
Maximum input voltage: ±600Vrms
Input impedance: 10MΩ for all ranges (ACV frequency response is 45~400Hz)
Allow the meter to stabilize for 10 minutes after using LoZ (low impedance) mode
Accuracy stated for 5 to 100% of range
Range
EX350 EX355
40.00mV 60.00mV
400.0mV 600.0mV
4.000V 6.000V
40.00V 60.00V
400.0V 600.0V
600V 600V
40.00mV 60.00mV
400.0mV 600.0mV
4.000V 6.000V
40.00V 60.00V
400.0V 600.0V
600V 600V
400.0V 600.0V
600V 600V
22
Resolution
10μV
0.1mV
1mV
10mV
0.1V
1V
10μV
0.1mV
1mV
10mV
0.1V
1V
0.1V
‐‐‐‐‐‐‐
EX35x‐en‐GB_V1.2 12/15
Accuracy
±(0.7％＋5 digits）
±(0.5％＋2 digits）
±(0.5％＋3 digits）
±(1.0％＋3 digits）
±(0.8％＋3 digits）
±(1.0％＋3 digits）
±(4.0％＋3 digits）
±(1.2％＋5 digits）