Static is one of those problems that is often invisible to the naked eye, unless it’s incredibly high and discharging to a nearby grounded surface. This is typically the exception, not the rule, so in cases where a charge cannot be seen, we have to use a tool to measure it. As the saying goes: “What gets measured, gets done”. If you don’t know the source of the static problem, or the severity, it’s often difficult to implement a proper solution. So how do we measure static?
It’s actually simple: EXAIR’s Model 7905 Static Meter is designed to take the guesswork out of the equation when evaluating static charges. It allows for an easy one-hand measurement of the static charge on the surface. This allows you to measure in numerous places in the process to evaluate the true source of the static. In most cases, the highest voltage reading will indicate the source of your static problem. Just this year, EXAIR released a brand-new Static Meter with an added LED light to help guide the user to the correct position for measurement.
The 7905 Static Meter is sensitive and responsive, indicating the surface voltage and polarity on objects up to +/- 20kV when measured at 1” from the surface. On the front face of the meter is an on/off button, zero button, and hold button. Accuracy of the meter is contingent on three critical factors:
- The instrument must be properly zeroed
- The distance from the front edge of the case to the target surface under examination must be 1” (25mm). Ranging LED lights help to ensure the correct distance. The meter should be guided towards the charged objects until the two LED circles are concentric on the target. This confirms a spacing of exactly 1”.
- The target must be large relative to the measurement distance. It should be at least 5” x 5” for true accuracy.
When looking for a way to identify the source of your static woes, EXAIR’s Static Meter is an ideal fit. Since the method used to neutralize this static is also invisible, using a Static Meter in conjunction with any EXAIR Static Eliminator allows you to confirm and quantify the result of the products working as intended. To do this, simply take a measurement of the surface before and after treatment with any EXAIR Static Eliminator. After being exposed to the static neutralizing ions, the residual static charge should be neutralized and able to be confirmed on the display of the Static Meter.
Once you’ve identified the location and severity of the static, EXAIR offers a complete line of Static Eliminators that can quickly neutralize the charge and eliminate any associated problems.
Tyler Daniel, CCASS
Application Engineer
E-mail: [email protected]
X: @EXAIR_TD
