Mô tả sản phẩm: Fluke 741B Documenting Process Calibrator
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Measurement Accuracy
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| 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 |
| 110.00 Ω | 0.05% + 50 mΩ | |
| 1.1000 kΩ | 0.05% + 500 mΩ | |
| 11.000 kΩ | 0.1% + 10 Ω | |
| 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 | 0.01% + 20 mΩ |
| 110.00 Ω | 0.01% + 40 mΩ | |
| 1.1000 kΩ | 0.02% + 500 mΩ | |
| 11.000 kΩ | 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 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 | |
| note: | For 2-and 3-wire measurement, add 0.4 °C | |
| E: | 0.3 °C | |
| N: | 0.5 °C | |
| J: | 0.3 °C | |
| L: | 0.3 °C | |
| K: | 0.3 °C | |
| T: | 0.3 °C | |
| U: | 0.3 °C | |
| B: | 0.9 °C | |
| R: | 1.0 °C | |
| S: | 0.9 °C | |
| C: | 0.6 °C | |
| note: | Accuracy 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 | |
| note: | For 2-and 3-wire simulation, add 0.4 °C | |
| E: | 0.2 °C | |
| N: | 0.3 °C | |
| J: | 0.2 °C | |
| L: | 0.2 °C | |
| K: | 0.3 °C | |
| T: | 0.3 °C | |
| U: | 0.3 °C | |
| B: | 0.8 °C | |
| R: | 0.9 °C | |
| S: | 0.9 °C | |
| C: | 0.6 °C | |
| note: | 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 | |
| Weight | 1.4 kg | |
| 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. | ||
