AlphaLab, Inc. Surface DC Voltmeter Model SVM2

The Surface DC Voltmeter model SVM2 is a handheld electrostatic voltmeter that measures essentially all the parameters associated with static electricity. Its principle function-- measuring the voltage of a sample or surface without touching it-- is intuitive and the meter can be used for this purpose immediately out of the box. In addition, it has features not found in any other handheld static meter, such as very high sensitivity. Its resolution is one volt at the standard measurement distance of 1" (2.5 cm), making the SVM2 the most sensitive noncontact voltmeter available (other than our Ultrastable Surface Voltmeter, which is 1/10 volt resolution at 1"). This additional sensitivity makes the meter practical for determining other parameters, such as a sample's "ohms per square" and discharge time, and a room's air ion balance. Static charge can even be measured on tiny submillimeter samples (correction formulas are required because of the geometry of small samples). The single range is - 29,999 to +29,999 volts, in one volt steps, it can detect a small change even in a high voltage. There is also a user-settable alarm and a peak hold for both + and - voltage peaks, all with ultrafast 0.005 second response. Therefore, the meter can be used to scan large areas quickly for static sources. It will beep if exposed longer than 5 millisec to a voltage (whether + or - polarity) that is higher than the alarm level, which is settable from 10 to 20,000 volts in 300 levels (it can also be muted). Then by pressing the "- Peak Hold" or "+ Peak Hold" button, the meter displays respectively the most negative and most positive voltages that were detected since the last time that the "Reset" button was pressed. The peak hold function can also be used to measure AC voltage (approximately 1/3 the peak-to-peak voltage). These innovations have been incorporated so that the operator can effectively "see" static electricity with greater clarity and speed than has been possible before.