TECHNICAL BULLETIN TB-7587 High Speed, High Accuracy Tester Made in the Installation, Operation and Maintenance United States of America and Britain Description All models of the Vermason High Speed, High Accuracy Tester range comprise a digital test unit controlled by a programmable IC. They can test the efficiency of personnel grounding systems while being worn, by measuring the resistance in the circuit including the body of the operator. The instrument will indicate whether the resistance is in the ranges specified in EN 61340-5-1 using Annex A test method A.1. All personnel shall be grounded or equipotentially Figure 1. Vermason 222562 High Speed, High bonded when handling ESDS ESD sensitive Accuracy Wrist Strap Tester items . When personnel are seated at ESD protective workstations, they shall be connected to ground via a wrist strap system EN 61340-5-1 Edition 1 2007-08 clause 5.3.2 Personnel grounding The operator shall wear the wrist strap in the normal position and plug the free end of the cord into the test apparatus. The hand contact plate shall be pressed to verify that the grounding systems resistance is within acceptable parameters. The test apparatus can be an integrated, commercially available tester or other Instrumentation that is capable of measuring resistance 4 8 from 5,0x10 ohms to at least 1,0x10 ohms. The tester Figure 2. Vermason 222563 High Speed, High open-circuit voltage is typically between 9 V d.c. and Accuracy Wrist Strap Test Station 100 V d.c. EN 61340-5-1 Edition 1.0 2007-08 Annex A Test method A.1 Measurement method for wrist strap testing Wrist Strap Test Frequency Wrist straps should be tested periodically. The frequency of testing, however, is driven by the amount of usage, wear and ESD risk exposure that can occur between tests. For, example, what is the quantity of product handled between test periods Typical test programs recommend that wrist straps that are used daily should be tested daily. However, if the Figure 3. Vermason 222564 High Speed, High products that are being produced are of such value that Accuracy Wrist Strap / Footwear Test Station a guarantee of a continuous, reliable ground is needed then continuous monitoring should be considered or even required. CLC/TR 61340-5-2 User guide Wrist Strap clause 4.7.2.4.4 Test frequency Where continuous monitoring is used, no additional testing is required. EN 61340-4-1, per A.5.2 NOTE 1: Electrical breakages within the cord can be checked by flexing the cord during measurement Figure 4. Vermason 222565 High Speed, High Accuracy Wrist Strap / Footwear Test Station with Output UNIT C, 4TH DIMENSION, FOURTH AVENUE, LETCHWORTH, HERTS, SG6 2TD UK Phone: 0044 (0) 1462 672005, E-mail: Service Vermason.co.uk, Internet: Vermason.co.uk 2013 Vermason TB-7587 Page 1 of 3 July 2013If the resistance is still too high, dry skin might be 3. If applicable set the foot plate below the tester. the problem. Dry skin conditions can be resolved by 4. If applicable connect the footwear lead at the bottom applying moisturizing lotion on the wrist and repeating of the tester to the foot plate. the resistance test again. The moisturizing lotion should be one that is compatible with process requirements 222565 WRIST STRAP / FOOTWEAR TEST STATION and does not cause contamination. WITH OUTPUT The 222565 tester features a relay terminal that can be NOTE 2: Metal expansion bracelet style wrist bands integrated with electronic door locks, lights, buzzers, etc. It is may trap moisture underneath and can be more capable of switching up to .5A 50VDC. effective for people with dry skin. CLC/TR 61340-5-2 User guide Wrist Strap clause 4.7.2.4.3 Test procedure An Output Cable with stripped ends is included with the tester to help you wire your device to the testers relay The Vermason High Speed, High Accuracy Tester is terminal. The list below describes the relay contacts for available in four models: each wire. White Wire = Normally Closed Item Description Black Wire = Normally Open 222562 Wrist Strap Tester Red Wire = Common 222563 Wrist Strap Test Station Operation 222564 Wrist Strap / Footwear Test Station WRIST STRAP 222565 Wrist Strap / Footwear Test Station with 1. Snap the coiled cord to the wristband and fit it Output snugly onto the wrist. 2. Connect the other end of the wrist cord to a Packaging matching termination on the tester. Item 222562 1 High Speed, High Accuracy Wrist Strap Tester 3. Push and hold the test button until a result is 1 9V Alkaline Battery displayed. 1 Certificate of Calibration A green LED with buzzer indicates a PASS condition. A red LED indicates a FAIL condition. Item 222563 1 High Speed, High Accuracy Wrist Strap Tester Replace battery if the LOW BATTERY LED 1 Wall Plate illuminates. 1 9V Alkaline Battery 1 Certificate of Calibration FOOTWEAR 1. ESD Footwear covers heel grounders, toe Item 222564 grounders and ESD shoes/boots 1 High Speed, High Accuracy Wrist Strap / Footwear Tester 2. Place one foot on the foot plate and raise the other 1 Wall Plate off the floor. 1 Foot Plate, Single Foot 3. Push and hold the test button until a result is 1 9V Alkaline Battery displayed. 1 Certificate of Calibration A green LED with buzzer indicates a PASS Item 222565 condition. A red LED indicates a FAIL condition. 1 High Speed, High Accuracy Wrist Strap / Footwear Replace battery if the LOW BATTERY LED Tester illuminates. 1 Wall Plate 1 Foot Plate, Single Foot 4. Repeat Steps 2-3 for the other foot. 1 Output Cable 1 9V Alkaline Battery 1 Certificate of Calibration Installation 1. Insert the 9V battery into the tester. 2. If applicable install the tester at the desired location using the four mounting holes in the corners of the yellow wall plate. UNIT C, 4TH DIMENSION, FOURTH AVENUE, LETCHWORTH, HERTS, SG6 2TD UK Phone: 0044 (0) 1462 672005, E-mail: Service Vermason.co.uk, Internet: Vermason.co.uk 2013 Vermason TB-7587 Page 2 of 3