740 3M, 740 Datasheet
740
Specifications of 740
SCP204
Available stocks
740 Summary of contents
Page 1
... Wrist strap + shoe tester Operating Instructions MO 0765-0601 3 740 wrist strap + shoe tester < > o. 0765-0601 April, 2001 ...
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... Upper limit selection for wrist strap and shoe test II. Declaration of Conformity The 740 Wrist Strap and Shoe Tester is in conformity with the regulations of the EMC- directive 89/336/EWG. The following standards have been taken into account while designing and manufacturing the instrument: ...
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... III. Description The 740 wrist strap and shoe tester is an electronic test instrument which is easy to operate and designed to be wall mounted. An AC/DC transformer is supplied. The 740 switches off automatically after non-use for approximately 30 minutes. The unit consists of two measurement circuits with an open circuit test voltage for wrist strap and shoe test applications ...
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... Dual Lock™ fastening strips are placed is free of dust and dirt. Attach the 3M Dual Lock™ fastening strips to the rear of the 740 tester to the bottom and top in parallel; see drawing for locations. For securing on the wall, press the 740 firmly against the discs ...
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... LED indication on the 740. The shoe test does not influence the wrist strap test, therefore the shoes can be tested while the wrist strap is still connected to the 740 or the wrist strap can be tested while the operator is standing on the 741 shoe electrode. Both metal plates should not be pressed at the same time ...
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... The 740 will provide digital signals (high/low) while testing the personnel grounding devices. These digital signals can be used for data recording (Example 1) and authorization control equipment such as electrical door opening systems (Example 2). The output of the 740 will give you permanently + pin 3 and DC-return at pin 6. The remaining pins and 5 (open collector) will be high (max. + have to be provided externally) or low (DC-return) while pressing on the contact plates either for wrist strap or shoe tests ...
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Data output connector pin status when testing wrist strap/shoe ...
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... Verification of wrist strap test circuit: Connect the reference resistor to the 740 as shown in the Figure 1. Switch the 740 unit on. Select the 2 MΩ range and use the reference resistors as indicated in the test table and press contact plate A. ...
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... Verification of shoe test circuit: Connect the reference resistor to the 740 as shown in Figure 2. Select the 10 MΩ range using the reference resistors indicated in the test table and press contact plate B. 740 wrist strap + shoe tester < o. 11.1 MΩ 100 Output R max Figure 2 The LEDs will indicate as shown below. Repeat this procedure for 35, 50 and 100 MΩ ...
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... Wrist Strap + Shoe Tester Logbook Example: Test parameters: Wrist Strap (W) Not ok: 750 kΩ to: 2 MΩ Shoes (S) 750 kΩ to: 10 MΩ 5 MΩ 10 MΩ 35 MΩ Unit calibrated on: By: 35 MΩ Next calibration on: 50 MΩ Serial number: 100 MΩ ...
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... BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. If this product is defective within the warranty period stated above, your exclusive remedy shall be, at 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 ...