| Measurement Accuracy |
| 110.000 mV | 0.025%+0.015% * |
| 1.10000 V | 0.025%+0.005% * |
| 11.0000 V | 0.025%+0.005% * |
| 110.000 V | 0.05%+0.005% * |
| 300.00 V | 0.05%+0.005% * |
| 20 to 40 Hz | 2% + 10 |
| 40 to 500 Hz | 0.5% + 5 |
| 500 to 1 kHz | 2% + 10 |
| 1 kHz to 5 kHz | 10% + 20 |
| Ranges: | 1.1000, 11.000, 110.00, 300V |
| 30.000 mA | 0.01% + 0.015% * |
| 110.00 mA | 0.01% + 0.015% * |
| 11.000 Ω | 0.05% + 50 mΩ |
| 11.000 Ω | 0.05% + 50 mΩ |
| 1.1000 kΩ | 0.05% + 500 mΩ |
| 11.000 kΩ | 0.05% + 500 mΩ |
| 1.00 to 109.99 Hz | 0.05 Hz |
| 110.0 to 1099.9 Hz | 0.5 Hz |
| 1.100 to 10.999 kHz | 5 Hz |
| 11.00 to 50.00 kHz | 50 Hz |
| Accuracy | from 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 |
| 110.000 mV | 0.01%+0.005% * |
| 1.10000 V | 0.01%+0.005% * |
| 15.0000 V | 0.01%+0.005% * |
| 22.000 mA (Source) | 0.01%+ 0.015% * |
| 22.000 mA (Simulate) | 0.02% + 0.03% * |
11.000 Ω
110.00 Ω
1.1000 kΩ
11.000 kΩ | 0.01% + 20 mΩ
.01% + 40 mΩ
0.015% + 0.05 Ω
0.03% + 5Ω |
| 0.00 to 10.99 Hz | 0.01 Hz |
| 11.00 to 109.99 Hz | 0.1 Hz |
| 110.0 to 1099.9 Hz | 0.1 Hz |
| 1100 to 21999 Hz | 2 Hz |
| 22.000 to 50.000 kHz | 5 Hz |
| Note | * (% of reading + % of full scale) |
| RTDs and Thermocouples |
10 Ω Cu (427):
100 Ω Pt (3916):
100 Ω Pt (3926):
100 Ω Pt (385):
200 Ω Pt (385):
500 Ω Pt (385):
1000 Ω Pt (385):
120 Ω Ni (672):
note:
E:
N:
J:
L:
K:
T:
U:
B:
R:
S:
C:
note: | 2 °C
0.3 °C
0.3 °C
0.3 °C
0.3 °C
0.3 °C
0.3 °C
0.3 °C
For 2-and 3-wire measurement, add 0.4 °C
0.3 °C
0.5 °C
0.3 °C
0.3 °C
0.3 °C
0.3 °C
0.3 °C
0.9 °C
1.0 °C
0.9 °C
0.6 °C
Accuracy with external cold junction, for internal junction add 0.2°C |
10 Ω Cu (427):
100 Ω Pt (3916):
100 Ω Pt (3926):
100 Ω Pt (385):
200 Ω Pt (385):
500 Ω Pt (385):
1000 Ω Pt (385):
120 Ω Ni (672):
note:
E:
N:
J:
L:
K:
T:
U:
B:
R:
S:
C:
note: | 1 °C
0.1 °C
0.1 °C
0.1 °C
0.1 °C
0.1 °C
0.1 °C
0.1 °C
For 2-and 3-wire simulation, add 0.4 °C
0.2 °C
0.3 °C
0.2 °C
0.2 °C
0.3 °C
0.3 °C
0.3 °C
0.3 °C
0.8 °C
0.9 °C
0.9 °C
0.6 °C
Accuracy with external cold junction, for internal junction add 0.2 °C |
| Specifications |
| Source functions: | Voltage, current, resistance, frequency, temperature |
| Rate: | 4 steps/second |
| Trip detect: | Continuity or voltage (continuity detection not available when sourcing current) |
| Voltage: | Selectable, 24 V or 28 V |
| Accuracy: | 5% |
| Maximum current: | 22 mA, short circuit protected |
| Maximum input voltage: | 30 V DC |
| Source functions: | Voltage, current, resistance, frequency, temperature |
| Manual Step | Selectable step, change with arrow buttons |
| Autostep | Fully 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 (5.1“ x 9.3” x 2.4”) |
| Weight | 1.4 kg (3 lbs., 1oz.) |
| Batteries | NiCd: 7.2V, 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
Connection for optional battery eliminator |
| Data storage capacity | 1 day of calibration results |
| 90 day specifications | The standard specification intervals for the 741B 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. |