3M 740综合人体静电测试仪
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
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| 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. | | |