Related Manuals for 3M 746
Summary of Contents for 3M 746
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Page 1: Operating Instructions
3 746 Wrist Strap Tester Operating Instructions wrist strap tester o.k. o.k. Listed... -
Page 2: Safety Information
The 746 can be mounted to a wall or be used as a portable piece of test equipment. It operates from a 120 Vac source through an AC adapter, or a standard 9 volt battery. - Page 3 If the AC/DC adapter is plugged into the 746 Wrist Strap Tester, it must also be plugged into the wall outlet to allow the unit to function. If the 746 tester is to be powered with battery only, the AC/DC adapter MUST be disconnected from the DC input jack (1B) on the tester.
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Page 4: Installation
Specifications Base unit: 158 x 95 x 33 mm (6.25 x 3.75 x 1.25 in.) Weight: 200g (7 oz.) without battery Battery provided: 9 Vdc Lithium/Manganese Dioxide NEDA 1604LC AC/DC Adapter: 9 Vdc regulated 75 mA Accuracy: +/- 10% (10 MΩ limit) + 20%-0% (750 KΩ... -
Page 5: Battery Indicator
Plug the adapter into a 120 Vac outlet. CAUTION If the AC/DC adapter is plugged into the 746 Wrist Strap Tester, it must also be plugged into the wall outlet to allow the unit to function. If the 746 tester is powered with the battery only, the AC/DC adapter MUST be disconnected from the DC input jack (1B) on the tester. -
Page 6: Testing Procedure
Testing Procedure Wrist Band/Cord Test Put the wrist band on with the ground cord attached and insert the ground cord banana plug into the yellow wrist strap plug-in jack. Depress the metal contact plate and hold. One of the LED indicators will illuminate. An illuminated green LED indicates that the wrist strap assembly performs within the resistance range of 750 K . -
Page 7: Verification Procedure
FIGURE 1 Verification Procedure The 746 Wrist Strap Tester cannot be adjusted by the user, but the following steps can be used to verify that the 746 is operating within its specification. (The 746 may also be returned to 3M to obtain certification. - Page 8 Resistance range Resistance LED indication of the tester substitution box setting 750 K 750 K Ω Ω 900 K green Ω 9.0 M 10 M green Ω Ω 11.0 M Ω *This example is used in Figure 2 750 K wrist strap tester 900 K o.k.
- Page 10 3M’s option, to replace or repair the 3M product or refund the purchase price of the 3M product. Except where prohibited by law, 3M will not be liable for any loss or damage arising from this 3M product, whether direct, indirect, special, incidental or consequential regardless of the legal theory asserted.