As more and more process plants begin to take advantage of smart transmitters, the need for a new generation of calibrators has emerged-calibrators that can communicate via industry standard digital protocols. The Fluke 744 combines HART communication capability to deliver an integrated communicating calibrator. This rugged, reliable tool is ideal for calibrating, maintaining, and troubleshooting HART and other instrumentation.
The Fluke 744 does the work of several tools - sourcing, simulating and measuring pressure, temperature, and electrical signals in one rugged, hand-held device.
For documentation, the 744 automates calibration procedures and captures your data. And, of course, it helps you meet rigorous standards like ISO 9000, FDA, EPA and OSHA regulations.
Specifications
DC Voltage Measurement
| Range | Resolution | % of Reading +% of Full Scale |
| 1 Year | 2 Year |
| 110 mV | 1 µV | 0.025% + 0.015% | 0.05% + 0.015% |
| 1.1 V | 10 µV | 0.025% + 0.005% | 0.05% + 0.005% |
| 11 V | 100 µV | 0.025% + 0.005% | 0.05% + 0.005% |
| 110 V | 1 µV | 0.05% + 0.005% | 0.1% + 0.005% |
| 300 V | 10 µV | 0.05% + 0.005% | 0.1% + 0.005% |
| Temperature Coefficient: (0.001% of rdg. + 0.0015% f.s.)/°C in the ranges -10 to 18°C and 28 to 50°C |
| Input Impedance: 5 MW |
| Common Mode Error: 0.008% f.s./(Common Mode Volt) |
| Maximum Input Voltage: 300 V rms |
AC Voltage Measurement
| Frequency Range | % of Reading + Number of Counts |
| 1 Year | 2 Year |
| 20 Hz to 40 Hz | 2% + 10 | 2% + 10 |
| 40 Hz to 500 Hz | 0.5% + 5 | 0.5% + 5 |
| 500 Hz to 1 kHz | 2% + 10 | 2% + 10 |
| 1 kHz to 5 kHz | 10% + 20 | 10% + 20 |
| Ranges : 1.1000 V, 11.000 V, 110.00 V, 300.0 V rms |
| Resolution: 11.000 counts in all ranges except 300 V; 3,000 counts on 300 V range. |
| Input Impedance: 5 M W and <100 pF |
| Temperature Coefficient: 10% of specification/°C in the ranges -10 to 18°C and 28 to 50°C |
| Input Coupling: ac |
| Maximum Input Voltage: 300 V rms |
| Minimum Input Voltage: 0.5 V above 1 kHz |
| Specifications apply for 10% to 100% of voltage range. |
Frequency Measurement
| Ranges | Accuracy |
| 1 Year | 2 Year |
| 1.00 Hz to 109.99 Hz | 0.05 Hz | 0.05 Hz |
| 110.0 Hz to 1099.9 Hz | 0.5 Hz | 0.5 Hz |
| 1.100 kHz to 10.999 kHz | 0.005 kHz | 0.005 kHz |
| 11.00 kHz to 50.00 kHz | 0.05 kHz | 0.05 kHz |
| Minimum Amplitude for Frequency Measurement (square wave): |
| <1 kHz: 300 mV p-p |
| 1 kHz to 30 kHz: 4 mV p-p |
| >30 kHz: 2.8 V p-p |
| Maximum input: |
| <1 kHz: 300 V rms |
| >1 kHz: 30 V rms |
| Input Impedance: 5 MW |
| For frequency measurement less than 109.99 Hz, specifications apply for signals with a slew rate greater than 5 volt/millisecond. |