This document describes the features and characteristics of the current calibrator. The calibrator has an adjustable 0~24mA current source and can drive loads up to 500 ohms. It features a large LCD display with a sampling time of approximately 0.4 seconds. The operating temperature range is 0°C ~ 50°C. The calibrator has dimensions of 185 x 78 x 38mm and weighs 265g. It requires one 9V battery, which is not included. The calibrator includes a cable with red and black alligator clips and instructions.
The Tenma 72-6694 is a portable current calibrator designed for precise current sourcing in laboratory and field environments. It offers an adjustable output from 0 to 24 mA, a large LCD for easy reading, and a sampling time of about 0.4 seconds. The unit runs on a single 9 V battery (not included) and includes alligator‑clip leads.
Key specifications include a load capability of up to 500 Ω, operating temperature range of 0 °C to 50 °C, compact dimensions of 185 × 78 × 38 mm, and a weight of 265 g. Electrical performance is defined by two range settings with resolution and accuracy specifications, tested under low electromagnetic interference conditions.
| Output current range | 0 ~ 24 mA |
|---|---|
| Load capability | Up to 500 Ω |
| Display | Large LCD |
| Sampling time | ≈ 0.4 s |
| Operating temperature | 0 °C ~ 50 °C |
| Physical size | 185 × 78 × 38 mm (7.3 × 3.0 × 1.5 in) |
| Weight | 265 g (0.58 lb) |
| Power source | One 9 V battery (not included) |
| Current source resolution (0‑19.99 mA) | 0.01 mA |
| Current source accuracy (0‑19.99 mA) | +0.25 %FS + 1 digit |
| Current source resolution (0‑24 mA) | 0.1 mA |
| Current source accuracy (0‑24 mA) | +0.5 %FS + 1 digit |
It can source a current from 0 to 24 mA.
It can drive loads up to 500 Ω.
The sampling time is approximately 0.4 seconds.
The device operates between 0 °C and 50 °C.