Desco 19276 is a tester, x3, combo, data output, w/ dual plate.
The Desco Combo Tester X3 verifies the functionality of an operator's wrist strap and footwear. It determines if an operator's wrist strap and footwear will act as a path-to-ground and ensures the presence of a current-limiting resistor in the grounding devices. The operator's wrist strap and footwear will test simultaneously with no need for separate tests. Green lights indicate that the wrist strap and footwear are passing. Red lights and an audible alarm indicate when the wrist strap and/or footwear (left or right) are failing. If failure occurs, the tester will also display if the grounding device's resistance is too low or too high.
The factory test ranges are set to:
Wrist Straps - 570 kilohms - 10 megohms
Footwear: 750 kliohms - 35 megohms
Each Combo Tester X3 is calibrated with accepted procedures and standards traceable to the National Institute of Standards and Technology (NISY) and includes a NIST certificate
Similar Item: This item also comes in an option that includes a stand - Desco 19277
*Tests either single wire or dual wire wrist straps.
**The Combo Tester X3 will also test Groundable Static Control Garment System. Groundable Static Control Garment System must have a RTG < 3.5 x 10E7 ohms to meet the required limit of ANSI/ESD S20.20-2007 tested per ANSI/ESD STM2.1 and ESD TR53. Combo Tester X3 is factory preprogrammed to test wrist straps or footwear.
Wrist Strap Range: 750 Kilohms - 10 Megohms. Footwear Range: 750 Kilohms - 35 Megohms. Custom ranges are available.
Per ESD Handbook TR 20.20 paragraph 5.3.2.4.4 "Typical test programs recommend that wrist straps that are used daily should be tested daily. However, if the products that are being produced are of such value that knowledge of a continuous, reliable ground is needed, and then continuous monitoring should be considered or even required."
“Compliance verification should be performed prior to each use (daily, shift change, etc.). The accumulation of insulative materials may increase the foot grounder system resistance. If foot grounders are worn outside the ESD protected area testing for functionality before reentry to the ESD protected area should be considered.” (ESD SP9.2 APPENDIX B - Foot Grounder Usage Guidance)
“A log should be maintained which verifies that personnel have tested their personal grounding devices.” (ANSI/ESD S20.20 Paragraph 6.2.2.2 Personnel Grounding Guidance)
“Frequency of Functional Testing: The wrist strap system should be tested daily to ensure proper electrical value. Nominally, the upper resistance reading should be < or = 10 megohms or a user-defined value.” (ANSI/ESD S1.1-2006 Annex A3)
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