The 3M Wrist Strap And Footwear Tester 740 Is An Ac-Powered Unit Designed To Be Wall-Mounted In A Production Facility For Daily Testing Of Employees' Static Control Wrist Straps.
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.
Use of the optional 3M™ Shoe Electrode 741 attachment allows the tester to be used as a footwear tester as well. The optional Shoe Electrode 741 is a test plate that connects to the Wrist Strap and Footwear Tester 740.
