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Home - Calibrators
Fluke 744
Fluke 744 Documenting Process Calibrator Fluke 744 Documenting Process Calibrator

DC Voltage Measurement

Range Resolution  % of Reading +% of Full Scale
1 Year  2 Year
110 mV 1 µV 0.025% + 0.015%  0.05% + 0.015%
1.1 V  10 µV 0.025% + 0.005% 0.05% + 0.005%
11 V 100 µV 0.025% + 0.005% 0.05% + 0.005%
110 V 1 µV 0.05% + 0.005% 0.1% + 0.005%
300 V 10 µV 0.05% + 0.005% 0.1% + 0.005%
Temperature Coefficient: (0.001% of rdg. + 0.0015% f.s.)/°C in the ranges -10 to 18°C and 28 to 50°C
Input Impedance: 5 MW
Common Mode Error: 0.008% f.s./(Common Mode Volt)
Maximum Input Voltage: 300 V rms

AC Voltage Measurement

Frequency Range % of Reading + Number of Counts
1 Year 2 Year
20 Hz to 40 Hz 2% + 10 2% + 10
40 Hz to 500 Hz 0.5% + 5 0.5% + 5
500 Hz to 1 kHz  2% + 10 2% + 10
1 kHz to 5 kHz 10% + 20 10% + 20
Ranges : 1.1000 V, 11.000 V, 110.00 V, 300.0 V rms
Resolution: 11.000 counts in all ranges except 300 V; 3,000 counts on 300 V range.
Input Impedance: 5 M W and <100 pF
Temperature Coefficient: 10% of specification/°C in the ranges -10 to 18°C and 28 to 50°C
Input Coupling: ac
Maximum Input Voltage: 300 V rms
Minimum Input Voltage: 0.5 V above 1 kHz
Specifications apply for 10% to 100% of voltage range.

Frequency Measurement

Ranges  Accuracy
1 Year 2 Year
1.00 Hz to 109.99 Hz 0.05 Hz 0.05 Hz
110.0 Hz to 1099.9 Hz 0.5 Hz 0.5 Hz
1.100 kHz to 10.999 kHz 0.005 kHz 0.005 kHz
11.00 kHz to 50.00 kHz 0.05 kHz 0.05 kHz
Minimum Amplitude for Frequency Measurement (square wave):
     <1 kHz: 300 mV p-p
     1 kHz to 30 kHz: 4 mV p-p
     >30 kHz: 2.8 V p-p
Maximum input:
     <1 kHz: 300 V rms
     >1 kHz: 30 V rms
Input Impedance: 5 MW

For frequency measurement less than 109.99 Hz, specifications apply for signals with a slew rate greater than 5 volt/millisecond.

Please contact us for more information on the Fluke 744


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