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Fluke 743B Documenting Process Calibrator

Model: 743B

300V DC, 110mADC. Source: 15V DC, 22mA DC.

This product has been discontinued. Click here for the replacement model(s).



Fluke 743B Specifications

Measurement Accuracy
Voltage DC
110.000 mV0.025%+0.015% *
1.10000 V0.025%+0.005% *
11.0000 V0.025%+0.005% *
110.000 V0.05%+0.005% *
300.00 V0.05%+0.005% *
Voltage AC
20 to 40 Hz2% + 10
40 to 500 Hz0.5% + 5
500 to 1 kHz2% + 10
1 kHz to 5 kHz10% + 20
Ranges1.1000, 11.000, 110.00, 300V
Current DC
30.000 mA0.01% + 0.015% *
110.00 mA0.01% + 0.015% *
Resistance
11.000 Ω0.05% + 50 mΩ
110.00 Ω0.05% + 50 mΩ
1.1000 kΩ0.05% + 500 mΩ
11.000 kΩ0.1% + 10 Ω
Frequency
1.00 to 109.99 Hz0.05 Hz
110.0 to 1099.9 Hz0.5 Hz
1.100 to 10.999 kHz5 Hz
11.00 to 50.00 kHz50 Hz
Pressure
Accuracyfrom 0.025% of range using any of 29 pressure modules.

(for detailed specifications refer to pressure modules in options and accessories)

Modules available for differential, gauge, vacuum, absolute, dual and high pressure.
Note
*(% of reading + % of full scale)

Source Accuracy
Voltage DC
110.000 mV0.01%+0.005% *
1.10000 V0.01%+0.005% *
15.0000 V0.01%+0.005% *
Current DC
22.000 mA (Source)0.01%+ 0.015% *
22.000 mA (Simulate)0.02% + 0.03% *
Resistance
11.000 Ω0.01% + 20 mΩ
110.00 Ω0.01% + 40 mΩ
1.1000 kΩ0.02% + 500 mΩ
11.000 kΩ0.03% + 5Ω
Frequency
0.00 to 10.99 Hz0.01 Hz
11.00 to 109.99 Hz0.1 Hz
110.0 to 1099.9 Hz0.1 Hz
1100 to 21999 Hz2 Hz
22.000 to 50.000 kHz5 Hz
Note
*(% of reading + % of full scale)

RTDs and Thermocouples
Measure Accuracy
10 Ω Cu (427): 2 °C
100 Ω Pt (3916)0.3 °C
100 Ω Pt (3926)0.3 °C
100 Ω Pt (385)0.3 °C
200 Ω Pt (385)0.3 °C
500 Ω Pt (385)0.3 °C
1000 Ω Pt (385)0.3 °C
120 Ω Ni (672)0.3 °C
noteFor 2-and 3-wire measurement, add 0.4 °C
E0.3 °C
N0.5 °C
J0.3 °C
L0.3 °C
K0.3 °C
T0.3 °C
U0.3 °C
B0.9 °C
R1.0 °C
S0.9 °C
C0.6 °C
noteAccuracy with external cold junction, for internal junction add 0.2 °C
Source Accuracy:
10 Ω Cu (427)1 °C
100 Ω Pt (3916)0.1°C
100 Ω Pt (3926)0.1°C
100 Ω Pt (385)0.1°C
200 Ω Pt (385)0.1°C
500 Ω Pt (385)0.1°C
1000 Ω Pt (385)0.1°C
120 Ω Ni (672)0.1°C
noteFor 2-and 3-wire simulation, add 0.4 °C
E0.2 °C
N0.3 °C
J0.2 °C
L0.2 °C
K0.3 °C
T0.3 °C
U0.3 °C
B0.8 °C
R0.9 °C
S0.9 °C
C0.6 °C
noteAccuracy with external cold junction, for internal junction add 0.2 °C

Specifications
Data Log Functions
Measure functionsVoltage, current, resistance, frequency, temperature, pressure
Reading rate1, 2, 5, 10, 20, 30, or 60 readings/minute
Maximum record length8000 readings (7980 for 30 or 60 readings/minute)
Ramp Functions
Source functionsVoltage, current, resistance, frequency, temperature
Rate4 steps/second
Trip detectContinuity or voltage (continuity detection not available when sourcing current)
Loop Power Function
VoltageSelectable, 24 V or 28 V
Accuracy5%
Maximum current22 mA, short circuit protected
Maximum input voltage30 V DC
Step Functions
Source FunctionsVoltage, current, resistance, frequency, temperature
Manual StepSelectable step, change with arrow buttons
AutostepFully programmable for function, start delay, stepvalue, time per step, repeat

Environmental Specifications
Operating temperature

-10°C to +50°C

-20°C to +50°C *
Storage temperature

-20°C to +60°C
Dust/water resistance

Meets IP52, IEC 529
Operating Altitude

2800 m
Note
*Except frequency and AC

Safety Specifications
Agency Approvals

CAN/CSA C22.2 No 1010.1-92, ASNI/ISA S82.01-1994, UL3111, and EN610-1:1993

Mechanical & General Specifications
Size

130 x 236 x 61 mm
Weight

1.4 kg
Batteries
NiCd7.2V, 1.7 Ah
Battery life

~8 hours typical
Battery Replacement

Via snap-shut door without opening calibrator; no tools required
Side port connections

Pressure module connector

RS-232 connector for PC interface cable

Connection for optional battery eliminator
Data storage capacity

1 week of calibration results
90 day specifications

The standard specification intervals for the 743B is 1 and 2 years.

Typical 90 day measurement and source accuracy can be estimated by

dividing the one year "% of reading" or "%of output" specifications by 2.

Floor specifications, expressed as "% of full scale" or

"counts" or "ohms" remain constant.

What's included with the Fluke 743B

  • Fluke 743B Documenting Process Calibrator

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