This manual describes the Fluke 707Ex milliampere calibrator, a compact handheld device for testing 0‑20 mA or 4‑20 mA current loops and measuring DC voltage up to 28 V. It includes safety warnings, battery‑saving features, and step‑by‑step instructions for using the current source, simulate and measurement modes.
Additional sections cover accuracy specifications, general environmental limits, replaceable parts, battery information, and contact details for Fluke support. The document is written in Simplified Chinese and spans 22 pages. This manual is written in Chinese.
| Voltage measurement range | 0‑28 V |
|---|---|
| Accuracy | ±0.015 % + 2 digits |
| Input impedance | 1 MΩ |
| Dimensions (W×H×L) | 69.85 mm × 142.87 mm × 50.80 mm |
| Weight | 0.28 kg |
The calibrator automatically shuts off after 30 minutes of inactivity, and the timeout can be shortened or disabled using the D button and the k/l knobs.
In power‑supply mode the battery lasts about 18 hours when delivering 12 mA into a 500 Ω load.
Do not apply more than 28 V between any two terminals or between a terminal and ground, as it can invalidate the Ex‑certificate and damage the device.
The calibrator can be stored from –30 °C to 60 °C and operated from –10 °C to 50 °C.