The 3M™ 718 Static Sensor is a portable, handheld instrument designed for measuring voltages associated with electrostatic charge. Its intended use is for measuring the amount of voltage, in a range from 0-20 kilovolts, associated with an electrostatic charge buildup on a surface. Any deviation from this intended use could impair the instrument’s effectiveness and possibly lead to an unsafe operating condition. The 3M™ 718A Air Ionizer Test Kit is a set of accessories for use in conjunction with the 3M 718 Static Sensor. Their intended use is for verifying the operation of air ionizers by measuring the neutralization time for a static charge placed on a stationary metal plate. Any deviation from this intended use could impair the instrument’s effectiveness and possibly lead to an unsafe operating condition.
This manual covers safety information, intended use, and power requirements for the 3M 718 Static Sensor, a portable handheld device for measuring electrostatic voltages up to 20 kV. It explains battery installation, automatic shut‑off, and how to use the HOLD, zero‑adjust, and range functions.
The document also details the optional 718A Air Ionizer Test Kit, calibration procedures, physical characteristics, part numbers, and contact information for technical support. Technical specifications such as dimensions, weight, operating conditions, measurement ranges, and output options are listed in the specifications section.
| Dimensions | 0.85" (H) x 2.4" (W) x 4.15" (L) |
|---|---|
| Weight | 4.5 oz (128 g) with battery |
| Operating Conditions | 41º F‑95º F (5º C‑35º C), up to 80% RH, indoor only |
| Power Requirements | One 9‑volt alkaline battery |
| Measurement Ranges | 0‑2 kV and 0‑20 kV |
| Voltage Display | 3½‑digit liquid crystal display |
| Display Resolution (low range) | 1 V/inch (0.39 V/cm) |
| Automatic Shut‑off | 20 minutes after last switch activity |
| Battery Life | Greater than 50 hours continuous use |
| Measurement Accuracy | Within ±5 % of measured voltage |
| Certifications | UL, C‑UL, CE, CB‑scheme, NOM |
The instrument automatically shuts off after 20 minutes of inactivity.
Press the POWER and RANGE switches simultaneously when turning the unit on.
The sensor offers two ranges: 0‑2 kV and 0‑20 kV.