EXAIR 7905 Installation & Maintenance

11510 Goldcoast Drive ▪ Cincinnati, OH, USA 45249-1621
(513) 671-3322 ▪ FAX (513) 671-3363 ▪ E-mail: techelp@exair.com
MODEL 7905 – DIGITAL STATIC METER INSTALLATION & MAINTENANCE
The Model 7905 Static Meter allows easy one-hand operation for field use. Accurate, sensitive and responsive,
the meter is extremely simple to operate and shows both the intensity and polarity of static charges on surfaces
without touching them.
In most cases, static discharges are destructive and/or potentially harmful. Dust clinging to product, materials
jamming or tearing, product clinging to itself and hazardous sparks or shocks to personnel are just a few of the many
problems associated with static. The Model 7905 Static Meter is an indispensable tool for detecting static charges
and finding the exact point where the static is generated. EXAIR Corporation manufactures static eliminators or
"ionizers" that neutralize static and eliminate associated static problems. See the Static Elimination section in the
EXAIR Catalog or contact an Application Engineer at 1-800-903-9247 (513-671-3322 outside the U.S.).
GENERAL
The Model 7905 Static Meter is a high quality, portable, non-contacting static meter which will produce years of
trouble-free operation. It will indicate surface voltage and polarity on objects up to ± 20kV at a spacing of one
inch with an accuracy of 10% full scale. Also featured are a pushbutton to hold readings and automatic power
down to conserve the battery.
The accuracy is dependent upon three factors:
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.
The target must be large relative to the measurement distance. It should be at least 5" x 5"
(127mm x 127mm) for true accuracy.

OPERATION

1. Press the "POWER ON/HOLD" button and release.
2. Discharge your body by touching a grounded, conductive object such as a water pipe, metal electrical
conduit, grounded machinery or workbench. Alternatively, the operator may wear a grounded wrist strap or
place one around the instrument. The case of the static meter is conductive and is the reference for the
measurement.

SPECIFICATIONS

Range:
0 to ± 20 kV at 1" (25mm)
Distance:
The meter reads true at 1" (25mm)
from the test surface
Accuracy:
± 10% of full scale
Power:
(1) 9 volt battery
(Eveready 216)
Size:
4.14" (105mm) long,
2.4" (61mm) wide,
1" (25mm) thick
Color:
Black
Weight:
Approximately 1/4 pound
(113 grams)
LIT 7001
©2007 EXAIR Corporation