TECHNICAL BULLETIN VER-29206 Digital Static Field Meter Made in the Operation and Maintenance United States of America Avoid a discharge from any charged ESD sensitive device (the charging can result from direct contact and separation or can be field induced): Necessary insulators in the environment cannot lose their electrostatic charge by attachment to ground. Ionisation systems provide neutralisation of charges on these necessary insulators (circuit board materials and some device packages are examples of necessary insulators). Assessment of the ESD hazard created by electrostatic charges on the nec- essary insulators in the work place is required to ensure that appropriate actions are implemented, according to the risk. All packaging and other materials that may be electrostatic generative to 2,000 volts must be kept a minimum of 12 from ESD sensitive items at all times. It is proper to rub an item and measure that it can charge. The ESD threat associated with process essential Insu- lators shall be evaluated to ensure that: the electrostatic field at the position where the ESDS ESD sensitive items are handled shall not exceed Figure 1. VER-29206 Digital Static Field Meter 10000 V/m Description if the electrostatic potential measured at the surface The Vermason Digital Static Field Meter is a high quality, of the process required insulator exceeds 2000 V, portable non-contacting static field meter which the item shall be kept a minimum of 30 cm from the consistently produces accurate readings with ease and ESDS. provides years of trouble-free operation. If the measured electrostatic field or surface potential The Digital Static Field Meter indicates surface voltage exceeds the stated limits, ionisation or other charge and polarity on objects up to 19.99 kV at a distance of 1 mitigating techniques shall be used. inch with an accuracy of 5% of the displayed value. It is EN 61340-5-1 Edition 1 clause 5.3.3 ESD protected chopper-stabilised for use under almost any condition areas (EPA) including ionised environments. The conductive case and ground snap facilitate grounding for accurate Other steps that can be taken are to remove the item measurement. Also featured are a zero button and a from the ESD protected area, periodically coat with a display hold function. A unique LED rangefinder topical antistat, or replace with a static control protective system provides accurate positioning of the Meter from version of the item. the target. Packaging Its accuracy is dependent upon three factors: 1 Digital Static Field Meter 1 9V Alkaline Battery Grounding of the Meter via a ground cord (not 1 Ground Coil Cord included) (Meter is also grounded when held by a 1 Data Output Cord grounded operator). 1 Certificate of Calibration The instrument must be properly zeroed. The distance from the front edge of the case to the target or surface under examination must be accurately defined. Charged insulators in the ESD protected area can adversely impact quality, productivity, and reliability. In the Introduction of the CLC/TR 61340-5-2 User guide UNIT C, 4TH DIMENSION, FOURTH AVENUE, LETCHWORTH, HERTS, SG6 2TD UK Phone: 0044 (0) 1462 672005, Fax: 0044 (0) 1462 670440 e-mail: Service Vermason.co.uk, Internet: Vermason.co.uk 2016 Vermason TB-6567 Page 1 of 4 March 2016D. POWER Button: Press to turn the unit ON and OFF. E. 4mm Stud: Use this stud to ground the Meter using the included Ground Coil Cord. F. Battery Cover: Slide the cover down to open the 9V battery compartment. Operation Note: The VER-29206 Digital Static Field Meter is built in C a conductive case. The instrument senses the difference in potential between the case (and the person holding A D the case / ground connection) and the surface under test. Ensure that the person using the instrument is grounded B or that the rear panel ground snap connection is used to achieve accurate measurements. BATTERY CHECK The battery should be replaced when BAT is FRONT VIEW indicated on the display. Always replace the battery with a 9V alkaline or equivalent battery in order to remain CE compliant. ZERO THE METER Turn the meter on by pressing the POWER button. Press the RANGE / ZERO button to set the meter to the 2 kV (3 decimal places) range. Point the top of the Meter approximately 1 inch away from a grounded meal surface. Use the red LED range guide. The Meter is properly positioned when the projected red bullseyes are centered on top of each other. Press and hold the E RANGE / ZERO button until the meter displays .000. MAKING A MEASUREMENT F Place the meter 1 inch from the object to be measured. This distance is measured from the front edge of the meter case to the surface of the object. The meter now displays a reading (from 0 to .200 or 2.00) of the BACK VIEW electrostatic field in kilovolts per inch. Note: The red ranging lights are provided to help place the meter at the correct distance from the object. The Figure 2. Digital Static Field Meter features and lights are set to produce a concentric red bullseye components pattern on a flat opaque surface 1 inch from the front edge of the meter. This can be practiced by aiming the meter at a sheet of white paper. Features and Components A. HOLD Button: Press to freeze the reading on the The display will indicate 1 or -1 when the meter is display. Press again to return to normal measurement over-ranged. Change the range of the unit if necessary. If operation. the measurement exceeds 20 kV, move the meter farther away from the object and multiply the reading by the B. RANGE / ZERO Button: Press to select the distance (in inches) away from the object being measurement range. Press and hold to zero the measured. The measurement accuracy is dependent on meter. a stable ground reference and the 1 inch measuring C. Analog Output Jack: A low-voltage signal of the distance. It is also dependent on the aspect ratio, measured voltage is provided at this output. The relating the size of the object to be measured to the voltage is 1/1000th (2 kV range) or 1/10,000 (20 kV measurement distance. range) of the measured voltage. UNIT C, 4TH DIMENSION, FOURTH AVENUE, LETCHWORTH, HERTS, SG6 2TD UK PHONE: +44 (0) 1462-672005 E-MAIL:Service Vermason.co.uk, INTERNET: Vermason.co.uk 2016 Vermason TB-6567 Page 2 of 4