TECHNICAL BULLETIN TB-6581 Limit Comparator Made in the Operation Instructions United States of America The EMIT 50424 Limit Comparator is to be used with the following items: Brand Item Description EMIT 50404 Dual Independent Footwear Tester, North America EMIT 50412 Dual Independent Footwear Tester, No Power Adapter EMIT 50407 Dual Independent Footwear and Wrist Strap Tester, North America EMIT 50413 Dual Independent Footwear and Wrist Strap Tester, No Power Adapter EMIT 50562 Dual Independent Footwear and Wrist Strap Tester, Europe EMIT 50741 SmartLog V4, North America EMIT 50743 SmartLog V4, Asia EMIT 50747 SmartLog V4, Europe Figure 1. EMIT 50424 Limit Comparator EMIT 50751 SmartLog V4, Europe, with 10mm Adapter Description EMIT 50766 SmartLog V5, North America Frequency of recalibration should be based on the critical EMIT 50767 SmartLog V5, Asia nature of those ESD sensitive items handled and the risk of failure for the ESD protective equipment and materials. In EMIT 50768 SmartLog V5, Europe general, EMIT recommends that calibration be performed EMIT 50769 SmartLog V5, Europe, with 10mm annually. Adapter Use the EMIT 50424 Limit Comparator to perform periodic EMIT 50772 SmartLog V5 with Turnstile, 220VAC testing (once every 6-12 months) of the EMIT SmartLog EMIT 50773 SmartLog V5 with Turnstile, 120VAC V4, SmartLog V5 and Dual Independent Testers. It may also be used to verify the calibration of the Desco and EMIT 50774 Combo Tester X3 with Turnstile, Vermason Combo Tester X3. The Limit Comparator can 120VAC be used on the shop floor within a few minutes virtually EMIT 50775 Combo Tester X3 with Turnstile, eliminating downtime, verifying that the tester is operating 220VAC within tolerances. Desco 19278 Combo Tester X3 Desco 19279 Combo Tester X3 with Stand Vermason 222550 Combo Tester X3 Vermason 222551 Combo Tester X3 with Stand Vermason 222553 Combo Tester X3 with 10mm Adapter Vermason 222554 Combo Tester X3 with Stand and 10mm Adapter NOTE: The 50424 Limit Comparator also calibrates the following discontinued items: Desco 19276, 19277 EMIT 50760, 50761, 50762, 50763 EMIT - 3651 Walnut Avenue, Chino, CA 91710 (909) 664-9980 Website: DescoEMIT.com 2014 DESCO INDUSTRIES, INC. TB-6581 Page 1 of 5 January 2014 Employee OwnedDIP switches 3 and 4 control the LOW test limit. Packaging 1 Limit Comparator Switch 3 Switch 4 LOW Limit Resistance 2 Test Leads with Banana Plug Terminals 5 ON OFF 100 Kilohms (1 x 10 ) 1 RJ11 Foot Plate Cable 1 Certificate of Calibration 6 OFF ON 1 Megohm (1 x 10 ) Tester Configuration default setting The resistance limits for footwear and wrist strap tests are NOTE: At 1 Gigohm high limit resistance, a dirty foot controlled by the DIP switches located on the sides of the plate could result in a false pass. Be sure to keep the tester. Use the following tables for the DIP switch settings foot plate clean particularly when using this setting. and their corresponding test values. This setting is not suitable for relative humidity greater than 50%. WRIST STRAP RESISTANCE DIP switches 5 and 6 control the HIGH test limit. Left Side View Switch 5 Switch 6 HIGH Limit Resistance OFF OFF wrist strap test disabled Figure 2. Locating the DIP switch on the SmartLog V4 7 Tester, Dual Independent Tester and Combo Tester X3 ON ON 10 Megohms (1 x 10 ) 7 ON OFF 35 Megohms (3.5 x 10 ) default USA setting default Europe & Asia setting DIP switch 5 must be ON (default setting) for the wrist strap test to be active. The wrist strap test will be disabled if DIP switch 5 is set to OFF. The LOW limit for the wrist strap test is set to 1 Megohm and cannot be modified by the user. EMIT SMARTLOG V5 (ITEMS 50766 - 50769, 50772, 50773) DESCO AND VERMASON COMBO TESTER X3 FOOTWEAR RESISTANCE DIP switches 1 and 2 control the HIGH test limit. Switch 1 Switch 2 HIGH Limit Resistance 7 ON ON 10 Megohms (1 x 10 ) 7 Right Side View OFF OFF 35 Megohms (3.5 x 10 ) 8 ON OFF 100 Megohms (1 x 10 ) Figure 3. Locating the DIP switch on the SmartLog V5 9 OFF ON 1 Gigohm (1 x 10 ) EMIT SMARTLOG V4, DUAL INDEPENDENT DIP switches 3 and 4 control the LOW test limit. TESTER Switch 3 Switch 4 LOW Limit Resistance FOOTWEAR RESISTANCE 5 DIP switches 1 and 2 control the HIGH test limit. ON OFF 100 Kilohms (1 x 10 ) 5 OFF ON 750 Kilohms (7.5 x 10 ) Switch 1 Switch 2 HIGH Limit Resistance 7 ON ON 10 Megohms (1 x 10 ) default setting 7 OFF OFF 35 Megohms (3.5 x 10 ) NOTE: At 1 Gigohm high limit resistance, a dirty foot 8 ON OFF 100 Megohms (1 x 10 ) plate could result in a false pass. Be sure to keep the 9 OFF ON 1 Gigohm (1 X 10 ) foot plate clean particularly when using this setting. This setting is not suitable for relative humidity greater than 50%. EMIT - 3651 Walnut Avenue, Chino, CA 91710 (909) 664-9980 Website: DescoEMIT.com 2014 DESCO INDUSTRIES, INC. TB-6581 Page 2 of 5 Employee Owned