3M740+741D人体综合测试仪

3M740手腕带和防静电鞋鞋束测试仪可安装在工厂墙上与741D脚垫配合使用来测试工人的手腕带和防静电鞋接地系统是否工作良好。不同的阻值设定，易于识别的指示灯，适用于不同的工业，公司和国际标准，同时具有数字输出端口，可连接自动门控、警报及数据记录设备。

产品描述：

740 Wrist strap + 741Dshoe tester: The 740 wrist strap and shoe tester consists of: - Instruction manual with daily log sheet - Base unit - Data output connector plug - Wall mounting kit, 3M Dual Lock? fastening system and template - Cover for wrist strap plug-in jack - AC/DC transformer - Ground cord Accessories: - Shoe electrode type 741 (single electrode) sold separately The 741 shoe electrode must be connected if footwear testing is required.

740 Properties

Item

Properties

Dimensions

5.43 in. x 7.48 in. x 2.09 in.
(13,8 cm x 19,0 cm x 5,3 cm)

Weight

15.75 oz. (450 gm)

Power Supply

27 volt DC transformer,
150 mA (AC/DC adapter suplied)
6 ft. (1,8 m) wire

Test Voltage

20 volts DC, ± 1 volt (open circuit)

Resistance Ranges

Lower limit: 750K ohms

Upper limit
wrist strap

2, 5, 10 and 35M ohms

Upper limit
footwear

10, 35, 50 and 100M ohms

Accuracy

+ 20%, -0% for 750K ohms lower limit
±10% for 2M, 5M, 10M, 35M and 50M
ohms ±20% for 100M ohms

Output

Open collector at pins 1, 2, 4 and 5.
DC return at pin 5. +5 volts at pin 3.