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Model 741B Documenting Process Calibrator -
Specifications |
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Source Accuracy |
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Range (full scale) |
Accuracy (% of reading + % of full scale) |
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110.000 mV |
0.01% + 0.005% |
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1.10000V |
0.01% + 0.005% |
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15.0000V |
0.01% + 0.005% |
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Source 22.000 mA |
0.01% + 0.015% |
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Simulate 22.000 mA |
0.02% + 0.03% |
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11.000W |
0.01% + 20 mW |
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110.00W |
0.01% + 40 mW |
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1.1000 kW |
0.02% + 0.5MW |
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11.000 kW |
0.03% + 5W |
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0.00 to 10.99 Hz |
0.01 Hz |
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11.00 to 109.99 Hz |
0.1 Hz |
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110.0 to 1099.9 Hz |
0.1 Hz |
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1.100 to 21.999 kHz |
2 Hz |
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22.000 to 50.000
kHz |
5 Hz |
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Measurement Accuracy |
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Range (Full scale) |
Accuracy (% of reading + % of full scale) |
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110.000 mV DC |
0.025% + 0.015% |
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1.10000V DC |
0.025% + 0.005% |
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11.0000V DC |
0.025% + 0.005% |
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110.000V DC |
0.05% + 0.005% |
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300.00V DC |
0.05% + 0.005% |
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V AC, 20 to 40 Hz |
2% + 10 counts |
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V AC, 40 to 500 Hz |
0.5% + 5 |
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V AC, 500 to 1 kHz |
2% + 10 |
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V AC, 1 kHz to 5
kHz |
10% + 20 |
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30.000 mA DC |
0.01% + 0.015% |
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110.00 mA DC |
0.01% + 0.015% |
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11.000W |
0.05% + 50 mW |
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110.00W |
0.05% + 50 mW |
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1.1000 kW |
0.05% + 0.5W |
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11.000 kW |
0.1% + 10W |
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1.00 to 109.99 Hz |
0.05 Hz |
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110.0 to 1099.9 Hz |
0.5 Hz |
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1.100 to 10.999 kHz |
5 Hz |
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11.00 to 50.00 kHz |
50 Hz |
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RTD's and Thermocouples |
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Device |
Measure Accuracy |
Source Accuracy |
Notes |
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10Ω
Cu (427) |
3°C |
1°C |
Note:
Resolution: 0.1°C, except 1°C for 10Ω Cu. Best case,
mid-range accuracies. Sensor inaccuracies not included. For 2-wire and
3-wire RTD measurements, add 0.4°C. Thermocouple accuracies with
external cold junction. For internal junction add 0.2°C. |
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100Ω
Pt (3916) |
0.3°C |
0.1°C |
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100Ω
Pt (3926) |
0.3°C |
0.1°C |
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100Ω
Pt (385) |
0.3°C |
0.1°C |
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200Ω
Pt (385) |
0.3°C |
0.1°C |
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500Ω
Pt (385) |
0.3°C |
0.1°C |
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1000Ω
Pt (385) |
0.3°C |
0.1°C |
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120Ω
Ni (672) |
0.3°C |
0.1°C |
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E |
0.3°C |
0.2°C |
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N |
0.5°C |
0.3°C |
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J |
0.3°C |
0.2°C |
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L |
0.3°C |
0.2°C |
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K |
0.3°C |
0.3°C |
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T |
0.3°C |
0.3°C |
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U |
0.3°C |
0.3°C |
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B |
0.9°C |
0.8°C |
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R |
1.0°C |
0.9°C |
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S |
0.9°C |
0.9°C |
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C |
0.6°C |
0.6°C |
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Technical Information |
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Environmental
Specifications * |
Operating Temperature: -10ºC to 50ºC (-20ºC typical except for
frequency and ac voltage measurement)
Storage Temperature: -20ºC to 60ºC
Operating Altitude: 2800 m above mean sea level (9186 ft)
Enclosure Protection: Designed to meet IEC529 IP52 (normal
operating vacuum for dust) |
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Ramp Function |
Source functions: Voltage, current, resistance, frequency,
temperature
Rate: 4 steps/second
Trip Detect: Continuity or voltage (continuity detection not
available when sourcing current) |
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Loop Power Function |
Voltage: Selectable, 24V or 28V
Accuracy: 5%
Maximum current: 22 mA, short circuit protected
Maximum input voltage: 30V DC |
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Note*(all
calibrator specifications apply from +18°C to +28°C unless stated
otherwise) |
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Mechanical and General
Specifications |
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Dimensions |
130 x
236 x 61 mm |
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Weight |
1.4 kg
(3 lb 1 oz) |
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Internal Battery Pack |
NiCd,
7.2V, 1700 mAh; |
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Battery Life |
Typical usage > eight hours |
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Battery Replacement |
Via
snap-shut door without opening calibrator; no tools required |
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Side Port Connections |
- Pressure module connector
- Connection for optional battery eliminator
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Safety |
Complies with CAN/CSA C22.2 No 1010.1-92, ASNI/ISA S82.01-1994,
UL3111, and EN610-1:1993 |
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Data Storage Capacity |
1 day
of calibration results |
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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 f.s." or "counts" or
"ohms" remain constant. |
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