TECHNICAL BULLETIN TB-3046 Analog Surface Resistance Test Kit Made in the Operation and Maintenance United States of America The Analog Surface Resistance Meter and its accessories are available as the following item numbers: Item Description 19784 Digital Surface Resistance Meter Kit 19786 Digital Surface Resistance Meter 19785 Test Leads 19293 Electrode Spacers, 10 and 36 19295 Handheld Electrode 19297 Two-Point Resistance Probe 19298 Glove Constant Area and Force Electrode 50003 Replacement 5 lbs. Electrodes 50004 Replacement T-Handles for 5 lbs. Electrodes 50005 Concentric Ring Probe Packaging 19784 Analog Surface Resistance Test Kit 1 Analog Surface Resistance Meter Figure 1. Desco 19784 Analog Surface Resistance Test 1 9V Alkaline Battery Kit 2 Shielded Test Leads Description 2 Five Pound Electrodes 1 Plastic Carrying Case The Desco Analog Surface Resistance Test Kit is 1 Certificate of Calibration a portable battery-powered instrument designed to measure resistance point-to-point (RTT) and surface to 19786 Analog Surface Resistance Meter ground (RTG). The meter is equipped with an automatic 1 Analog Surface Resistance Meter test voltage selector. The test voltage will switch from 1 9V Alkaline Battery 10V to 100V should the measured resistance exceed 1 x 1 Certificate of Calibration 5 10 ohms. ESD protected area products should be tested: A. Prior to installation to qualify for listing in users ESD control plan. Approved ESD materials (see product qualification table at ANSI/ESD S20.20 Table 3 EPA ESD control items) B. During initial installation C. For periodic checks of installed products as part of ANSI/ESD S20.20 Compliance Verification testing per ESD TR53. DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 (909) 627-8178 DESCO EAST - One Colgate Way, Canton, MA 02021-1407 (781) 821-8370 Website: Desco.com 2021 DESCO INDUSTRIES INC TB-3046 Page 1 of 4 October 2021 Employee Owned4. Use one 5 pound electrode on the other test lead Features and Components and place it at the center of the surface. 5. Set the Test Voltage Button to AUTO. Press and hold the the TEST button until the measurement is displayed (see Figure 3). 6. Perform additional measurements by placing the A electrode on the most commonly used or worn areas. CAUTION: If there is a current limiting resistor in the worksurface and the worksurface resistance is lower, the measurement will primarily be the resistance of the B resistor. It is recommended to measure RTT particularly D if the material color is black. C E Figure 2. Analog Surface Resistance Meter features and components A. Analog Display: Displays surface resistance 3 13 measurements from 1 x 10 - 1 x 10 ohms. B. Resistance Property LEDs: Color-coded LEDs that provide quick-check resistance indicators. C. Test Button: Hold this button down to operate the Analog Surface Resistance meter. D. Low Battery LED: Illuminates when the battery power drops to 4.0V (0.1V). E. Test Voltage Button: Test voltage will automatically Figure 3. Using the test leads and one 5 pound electrode switch from 10V to 100V when set to AUTO. Test voltage to measure RTG will stay at 10V HOLD when set to 10V. MEASURE WORKSURFACE RESISTANCE POINT-TO- Operation POINT ON THE SURFACE (RTT) Compliance Verification Test Procedure Guideline 1. Do not clean the surface. The ESD Association lists test procedures and 2. Remove all ESD sensitive items from the surface troubleshooting tips in Compliance Verification ESD and items that might interfere with the test. TR53. 3. Use two 5 pound electrodes and place them 10 apart on the most frequently used area of the NOTE: The test kit can be used to measure RTG and surface (2 from any edge, 3 from any groundable RTT of shelves, garments, floor and cart worksurfaces point). using test procedures similar to worksurfaces and foot 4. If the most used area of the surface is not obvious, grounders. use two points near the center of the surface. MEASURE WORKSURFACE RESISTANCE TO 5. Set the Test Voltage Button to AUTO. Press and hold GROUND (RTG) the TEST button until the measurement is displayed 1. Do not clean the surface. (see Figure 4). 2. Remove all ESD sensitive items from the surface and items that might interfere with the test. 3. Connect one lead banana plug to ground. DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 (909) 627-8178 DESCO EAST - One Colgate Way, Canton, MA 02021-1407 (781) 821-8370 Website: Desco.com 2021 DESCO INDUSTRIES INC TB-3046 Page 2 of 4 Employee Owned