Máy hiệu chuẩn đa năng Fluke 741B 120

Measurement Accuracy

Voltage DC

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% *

Voltage AC

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

Current DC

30.000 mA

0.01% + 0.015% *

110.00 mA

0.01% + 0.015% *

Resistance

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

Frequency

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

Pressure

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

Voltage DC

110.000 mV

0.01%+0.005% *

1.10000 V

0.01%+0.005% *

15.0000 V

0.01%+0.005% *

Current DC

22.000 mA (Source)

0.01%+ 0.015% *

22.000 mA (Simulate)

0.02% + 0.03% *

Resistance

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

Frequency

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

Measure and Source Accuracy:

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

Source Accuracy:

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

Ramp Functions

Source functions:

Voltage, current, resistance, frequency, temperature

Rate:

4 steps/second

Trip detect:

Continuity or voltage (continuity detection not available when sourcing current)

Loop Power Function

Voltage:

Selectable, 24 V or 28 V

Accuracy:

5%

Maximum current:

22 mA, short circuit protected

Maximum input voltage:

30 V DC

Step Functions

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.