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Tester, wristband, hi-speed high accuracy

Tester, wristband, hi-speed high accuracy

Desco

SKU:222562

In stock

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Product Overview

This wrist strap tester from DESCO, model 222562, is a high-speed, high-accuracy AC wrist strap tester for verifying personnel grounding while the wrist strap is worn. The device performs a single touch test ("stop and go") with a fixed test display on the first touch and a test cycle of approximately 1 second.

Function and Operation

The main function of the tester is to measure the resistance in the circuit, including the operator's body. The device uses a test voltage of 24 VDC. The result is displayed with a green LED and buzzer for PASS and a red LED for FAIL. The test limits are 750 kilohm (fail low) to 35 megohm (fail high). The accuracy is stated as ±10 %.
  • Operation: "stop and go" operation, 1 second test cycle
  • Test voltage: 24 VDC
  • Indicators: Green LED + buzzer (PASS), red LED (FAIL)

Typical Applications

The 222562 is used to verify personnel grounding while the wrist strap is worn. The instrument measures the resistance in the total circuit including the user's body and indicates whether the resistance is within the specified test limits. The documentation also specifies the test method in relation to EN 61340-5-1 (Annex A test method A.1).

Power Supply and Maintenance

The device comes with a 9 V alkaline battery; battery life is stated to be approximately 3,000 tests (3 seconds per test in the datasheet). Alternative power supply can be via the optional adapter 19262. Periodic inspection and calibration are recommended; a separate calibration unit (Vermason 222547) is available, and NIST-calibrated certificates are available via the manufacturer's product page.

Documentation

See datasheet from the manufacturer

Specifications

  • Product: DESCO 222562
  • Manufacturer: DESCO (Vermason)
  • Wrist Strap test limits: 750 kilohm - 35 megohm
  • Accuracy: ±10 %
  • Test voltage: 24 VDC
  • Power supply: 9 V battery or optional adapter 19262
  • Battery life: approx. 3,000 tests (supplied with 9 V alkaline battery)
  • Dimensions (tester): 146 mm x 91 mm x 33 mm
  • Weight: 0.3 kg (incl. battery and wall plate)

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