Welder User Manual

Form Number 2 TM61340-2 Rev November 2007
Page 4
Measurement Characteristics
Accuracy is ±(% reading + number of digits) at 23°C ± 5°C, less than 75% R.H.
(1) DC Volts(for 61-340 / 61-342)
Range Resolution Accuracy
Over voltage
protection
400.0mV 0.1mV ±(0.8% reading + 3 digits)
4.000V 1mV
40.00V 10mV
400.0V 100mV
±(0.8% reading + 1 digits)
1000V 1V ±(1.0% reading + 3 digits)
1000VDC or 750VAC
Input Impedance: 10MΩ
(2) AC Volts (61-340/61-342)
Range Resolution Accuracy
Over voltage
protection
400.0mV 0.1mV
±(1.2%+8)
4.000V 1mV
40.00V 10mV
400.0V 100mV
1.0% + 5
750V
1V
±(1.2%+5)
1000VDC or 750VAC
Input Impedance: 10MΩ
AC Conversion Type: 61-340: Average sensing rms indication calibrated to the sine wave input.
61-342: AC conversion is True RMS responding, calibrated to a sinusoidal
waveform
Crest Factor: C.F. = Peak/RMS
For non-sinusoidal waveform, C.F. > 2 add ±1% to accuracy,
Frequency response: 40～400Hz
(3a) DC micro-amp and milli-amps (for 61-340 / 61-342)
Range Resolution Accuracy Input Protection
400.0µA 0.1μA
4000µA 1μA
±(0.8% reading + 2 digits)*
40.00mA 10μA
400.0mA 0.1mA
±(0.8% reading + 3 digits)*
500mA, 250V Fast
Blow Fuse
Overload Protection: mA Input: 500mA, 250V Fast Blow fuse. (61-340 / 61-342)