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ESD Contact Voltmeter, CVM-780
ÆǸŰ¡°Ý  : °¡°Ý¹®ÀÇ [VATÆ÷ÇÔ]
ºê·£µå  : ESD
Á¦Ç°Äڵ堠: CVM-780
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°¡Ä¡ÀÖ´Â ESD ºÐ¼® µµ±¸

 

The CVM-780 Contact VoltmeterTM combines the ease of use of a digital voltmeter with the high input impedance and low input capacitance of a true electrostatic voltmeter in a small, portable, battery operated package.

Being a true electrostatic voltmeter, not a field meter means that it reads real voltage, without confusing it with electrostatic field strength, which can be distinctly different.

The CVM-780 Contact VoltmeterTM uses a unique active probe design which is fully guarded and shielded for minimal interference with the surrounding E field.

The Contact VoltmeterTM is powered by rechargeable Nickel Metal Hydride batteries and is a valuable ESD Analysis Tool.

Click here for Video tour

Specifications

Basic Description

   High impedance contact voltmeter with active probe

DC Characteristics

   Intended Operating Range: 0 to ¡¾525 volts

Resolution     1 volt, 3 digit display

Circuit accuracy      <¡¾1%

   Note: Maximum measurement range is ¡¾575 Volts for brief periods

Dynamic Characteristics

   Response Time: Approximately 1ms for a voltage step of 200V at the probe tip to the monitor output. Digital display update: 3 readings per second.

Input charge/measurement

   Approximately 100 femptocoulomb/volt (1.0x10-13 C/V)

Input Impedance

   =1014 ohm in parallel with <1pF Capacitance

Monitor Output

   Scale Factor: 10,000:1; 100uV/V (Compatible with Prostat¢â PGA-710 Autoanalysis System¢â)

Recording Deviation

   Typically < ¡¾10 volts at ¡¾ 500 Volts

Measurement Tolerances

   When measuring DC voltage reference:

     500 V Less or Equal to ¡¾2 V

    100 V Less or Equal to ¡¾2 V

     50 V Less or Equal to ¡¾2 V

     10 V Less or Equal to ¡¾1 V

When measuring floating conductors:

     500 V Less or Equal to ¡¾5% ¡¾2 Counts

     100 V Less or Equal to ¡¾5% ¡¾2 Counts

     50 V Less or Equal to ¡¾5% ¡¾2 Counts

     10 V Less or Equal to ¡¾10% ¡¾2 Counts

Probe Tips

   Metal: Nominally 0.95 and 0.45 inch Ceramic 0.90 and 0.40 inch ¡¾0.05¡±

Portable Operation

   Approximately 3.5 Hours on Full Battery Charge

   (Operates during Battery Charge)

Power

   4 each Energizer NH15-2500 Nickel-Metal Hydride rechargeable batteries (AA Size)

Charger

   Universal 90 to 264 Volts, 47 to 63 Hz

What's Included  

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