USER GUIDE TB-9017 Analog Surface Resistance Megohmmeter Kit Made in the Operation and Maintenance United States of America 1. Main Selector Switch: The main function selector switch allows the selection of desired test function. 2. TEST Button: This button engages the Megohmmeter and activates the test function selected. 3. OHMS Scale: This scale is used in conjunction with the SURFACE TEST functions to indicate the amount of resistance measured. 4. CONTINUITY Scale: This scale indicates the total resistance of the test setup (meter, leads, weights, and calibration plate) in the CONTINUITY TEST function. 5. BATTERY Scale: This scale indicates the charge level of the main battery of the Megohmmeter in the BATTERY TEST function by verifying the open circuit output test voltage. Figure 1. SCS 701 Analog Surface Resistance 6. Test Jacks: These jacks are used to connect the Megohmmeter Kit. Megohmmeter to the test leads. 7. Mechanical Zero Adjust: This control is used to zero Description the pointer. The 701 Analog Surface Resistance Megohmmeter Kit includes a hand-held megohmmeter and accessories. Operation The kit has been specifically designed for evaluating Note: the resistive characteristics of static control surface Turn off the Megohmmeter before connecting or materials and testing installed surfaces as specified in disconnecting test leads, or before moving test ESD Association Standards. weights. Turn off the Megohmmeter when not in use to save The Megohmmeter has four test functions which allow battery life. the user to measure the resistance of a static control Do not use this Megohmmeter to measure live surface at either of two test voltages, verify proper circuits. Megohmmeter performance, and check the electrical continuity of the test set-up. Caution: The test weights included in this kit are heavy, exercise care in handling. Note: The following procedures should be followed each time the Megohmmeter is used. Battery Test: Place the Megohmmeter on a table top or other stable surface. Set the main selector switch to BATTERY TEST. Press TEST and hold for 15 seconds. The pointer should come to rest in the green area of the BATTERY scale. If the pointer is in the red area to the left of 100V, replace the battery and retest. If the pointer is in the red area to the right of 100V, the megohmmeter may need recalibration. Figure 2. SCS 701 Analog Surface Resistance Megohmmeter Kit, controls, connectors and indicators. Controls, Connectors, & Indicators Before attempting any operation of the Megohmmeter, become familiar with each control. A thorough understanding of how the Megohmmeter operates will help avoid mistakes and prolong its useful life. Figure 3. Analog Surface Resistance Megohmmeter Kit, continuity test. SCS - 926 JR Industrial Drive, Sanford, NC 27332 East: (919) 718-0000 West: (909) 627-9634 Website: StaticControl.com 2019 DESCO INDUSTRIES INC TB-9017 Page 1 of 6 March 2019 Employee OwnedContinuity Test: Place the Megohmmeter on a table top This test involves measurement of the total resistance or other stable surface and attach the leads as shown from the static control surface through the conductor or in Figure . Place the test weights on the calibration ground cord to the ESD GROUND (ESDG), verifying the plate or other bare metal surface and plug in the test static control system is functioning correctly. leads. Set the main selector switch to CONTINUITY TEST. Press TEST. The pointer should come to rest in Note: ESD-S4.1 suggests that a static control surface 6 9 the green section of the CONTINUITY scale. If not, the that measures in the range of 1 x 10 ohms to 1 x 10 test leads may be defective or the weights may require ohms. maintenance or cleaning. Surface Test (Resistance Measurement): Refer to the two following sections to determine which measurement(s) should be used for your application. Place the Megohmmeter on a table top or other stable surface and attach the leads as shown in the appropriate sketch figures 5-1 through 5-5. Set the Main Selector Switch to the desired SURFACE TEST voltage. Place the test weight(s) on the surface to be tested and connect the test leads. Press TEST for 15 seconds and then read the resistance from the OHMS scale. After all readings have been completed, return the Main Selector Figure 4. Periodic Preformace Tests of Installed Switch to the OFF position. Surfaces. Resistance Measurement of Static The following procedures should be followed when testing installed static control surfaces: Control Work Surfaces A. Complete BATTERY TEST and CONTINUITY TEST. This section provides a summary of the types of surface B. Set the SCS 701 Analog Surface Resistance measurements specified and described by ESD-S4.1. Megohmmeter Kit on a table top or other stable surface and place a test weight at the desired test Measurements are performed for three reasons: point as shown in Figure 5. Connect the test leads 1. Periodic performance testing of installed static to the meter using the right angle banana plugs at control work surfaces. the meter. Then connect one of the test leads to the 2. Qualification of installed static control work surfaces. test weight and the other to the ESD GROUND using 3. Evaluation of static control work surface materials. one of the supplied clips. Note: The following paragraphs are offered as C. Test the static control surface using the 100 volts a condensed summary of the test methods and SURFACE TEST. Press the TEST button for 15 procedures outlined in the EOS/ESD standard. For seconds, allowing the pointer to stabilize record the complete details, refer to the standard. readings for each test point. If the reading is below 6 1 x 10 ohms, check the static control surface for an Test Description alternate path to ground correct and retest. If some or 9 all the readings are above 1x10 ohms, the static 1. Periodic Performance Testing Of Installed Static control surface may be dirty. Clean the surface using Control Surfaces: (Measurement of resistance from the manufacturers recommended cleaning procedure. the top of an installed surface to ESD GROUND If the resistance reading is infinite, there is an (RTS-ESDG) at ambient temperature and humidity). interruption (open) in the ground connection repair and retest. Note: ESD GROUND is the point at which the ground cord or other grounding conductor from the static control surface is connected. The ground point may be an electrical ground, building ground, or other suitable ground. If you have questions concerning the correct ground, refer to ANSI/ESD STANDARD S6.1 and/or contact a qualified electrician. This Resistance-to-Ground test verifies the surface is working correctly and will drain a static charge in a reasonable time. Figure 5. Qualification Tests of Installed Surfaces. SCS - 926 JR Industrial Drive, Sanford, NC 27332 East: (919) 718-0000 West: (909) 627-9634 Website: StaticControl.com 2019 DESCO INDUSTRIES INC TB-9017 Page 2 of 6 Employee Owned