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© Fraser An-Stac Techniques Ltd 2015
4. Operang Instrucons
Typical static levels:
1000V acve dust aracon begins
3000V aracon of light materials e.g. 20µ lm
6000V aracon of heavier lm and papers & hairs on back of hand
move, danger level in many hazardous areas
10,000V lm wraps around rollers in coang & gravure prinng etc.
and severe dust aracon
The EX715 measures the surface voltage in V or kV. A common queson is
“What is the relaonship between surface voltage and eld strength?” The
relaonship is:
Surface voltage in V = eld strength in V/meter x distance from object in
meters
Range:
The EX715 has two ranges which are selected automacally:
• Up to ±20kV the resoluon is 10V
• From ±20kV to ±200kV the resoluon is 100V.
Battery Options
Important: The hazardous area cercaon of the EX715 is only valid if
the following baeries are used. The choice of baery will also dictate the
maximum ambient temperature in which the instrument can be used.
Duracell Industrial MN1604
Duracell Coppertop MN1604 gives the instrument a T4 rang with an
ambient temperature Ta ≤ +59ºC
Panasonic 6F22R gives the instrument a T5 rang with ambient
temperature Ta ≤ +40ºC]