How do you calibrate a wrist strap tester?
How do you calibrate a wrist strap tester?
For calibrating a wrist strap tester turn the knob to the upper part of the dial marked ‘Wrist strap tester’. For calibrating a footwear tester turn the knob to the lower part of the dial marked ‘Footwear tester’. 1. Connect the calibration unit lead that is terminated with a 10mm socket to the 10mm stud of the tester.
What is a wrist strap Tester?
The Wrist Strap Tester is a battery operated “on demand” wrist strap tester. When the wearer of a wrist strap plugs in their coil cord and touches the metallic surface of the Wrist Strap Tester, a path for current flow is completed from the wearer’s skin, through the wrist strap.
How do you measure the resistance of a wrist strap?
3 Answers. Use an ohmmeter or multimeter to determine if there is conductivity between the metal part of the wrist strap, and the end part where you connect it to ground. You should see some measurable resistance (indicating good conductivity) if the strap is functioning correctly.
What an anti static wrist strap is?
Anti static wrist straps are designed to safely ground operators working with ESD sensitive components, preventing a build-up of static electricity. Also known as an ESD wrist strap or ground bracelet is only effective when connected to a grounding source such as a grounding plug via an earth lead.
What will the test station show if an ESD wrist strap fails testing?
remove the wrist strap and hold the bottom part of the band tightly between the testers thumb and index finger and test. If the test fails high, the band may be soiled and need cleaning or the buckle to band connection may be suspect.
How do you stop an anti static wrist strap?
Although wearing a wrist strap will help to prevent ESD, you can further reduce the risks by not wearing clothing made of silk, polyester, or wool. These fabrics are more likely to generate a static charge. Technicians should roll up their sleeves and tuck in their shirts to prevent interference from clothes.
How often should ESD wrist strap be tested?
every six months
Set up a schedule to be sure that all ESD grounds are inspected and tested periodically, every six months for example. The best test of the wrist strap system is while it is worn. This includes all three components: the wristband, the ground cord (including resistor), and the interface with the wearer’s skin.
When testing an ESD wrist strap the resistance reading range of a good working wrist strap should be between?
1, where the wrist strap system continuity test passes at less than or equal to 1×107 ohms (or 10 megohms). The wrist strap itself is recommended to have a 1 megohm resistance +/- 20% for electrical safety to the user, which is the lower limit for the tester.
How do you test an ESD wrist strap with a multimeter?