Trek 706B User Manual

Model 706B

Portable Electrostatic Voltmeter

! Switch Selectable

Ranges:

0 to +1 kV DC

0 to -1 kV DC

! 3½ Digit LCD

Display

! Battery Test Switch

The Trek Model 70 portable electrostatic voltmeter is

designed to perform highly accurate noncontacting

surface electrostatic voltage measurements.

Applications include measurement of photoreceptor

surfaces in copiers and laser printers.

The Trek Model 706B E.S. [Electrostatic] Voltmeter provides measurement ranges of 0 to +1 kV or 0 to -1 kV (switch selectable) and employs an easy to read 3½ digit liquid crystal display to indicate the measured electrostatic voltage. Accurate electrostatic measurements can be performed over

a probe to test surface spacing of 1 mm to 5 mm.

A voltage-nulling technique is employed in the Model 706B that

achieves DC stability and high accuracy even if the probe-tomeasured surface spacing varies during use, this permits measurement of rotating electrophotography drums without concern for the effects of measurement accuracy due to drum eccentricities.

The probe design provides low noise and drift performance even in the presence of contaminating toner particles or under conditions of high humidity and temperature. The

small durable probe has a cable length of 183 cm (72²).

! DC-Stable Probe

with Side Viewing Aperture Orientation

! Low Noise

! Durable Design

! RoHS Compliant

! Compliant

The Model 706B is lightweight, battery operated, and packaged in a rugged enclosure that provides a convenient probe storage area.

Measurement and Power Solutions

www.trekinc.com

Model 10/40A Specifications

Model 706B Specifications

All specifications are at a probe-to-surface separation of 3 mm unless otherwise noted.

PERFORMANCE FEATURES GENERAL

Measurement Range

0 to +1 kV or -1 kV DC (switch selectable).

Accuracy

Better than 0.5% of full scale.

PROBE

Recommended Probe-to-Surface Separation Distance

1 mm to 5 mm.

Trek Model 701P-76S Probe

Dimensions

8.7 mm diameter x 70 mm L (0.35² diameter x 2.75² L).

Caution: The metallic components of the probe are driven to the measured surface voltage level with a current

capability of ±0.5 milliamperes. These metallic surfaces should not be connected to ground or touched during operation.

Cable Length

1830 mm (72").

Aperture Size (oval shaped)

3.18 mm W x 6.35 mm L (0.125² W x 0.25² L).

Aperture Orientation

Side viewing.

Range Switch Power Requirements

A two-position switch is used to select the measurement range of either 0 to +1 kV or 0 to -1 kV.

TEST/READ Switch

In the TEST position, if the digital display indicates a value lower than 1100, the batteries should be replaced. In the READ position, the measurements are displayed.

Voltage Display

3½ digit liquid crystal display.

Range

0 to ±1000 V.

Resolution

1 V.

Zero Offset

Less than ±1 count.

Sampling Rate

3 readings per second.

NOTE: The Model 706B is designed to make electrostatic voltage measurements only!

To ensure safety, the Model 706B should never be used to perform measurements of “hard” voltage sources or voltage sources which can deliver currents high enough to cause harmful shocks or personal injury.

Two (2) 9-volt alkaline batteries.

Operating Time

10 hours after battery replacement.

Operating Conditions

Temperature

5 °C to 35 °C.

Relative Humidity

To 85%, noncondensing.

Dimensions

39 mm H x 130 mm W x 134 mm D, (1.6² H x 5.2² W x 5.3²L).

Weight

455 g (1 lb), with batteries.

Ground Receptacle

The green banana jack must be connected to ground to maintain measurement accuracy.

Power On/Off

A two-position toggle switch.

Certification

TREK, INC. certifies that each Model 706B is tested and calibrated to specifications using measurement equipment traceable to the National Institute of Standards and Technology.

RoHS and CE compliant.

Model 706B Included Accessories Certification (cont.)

Item Part No.

Portable Electrostatic Voltmeter . . . . . . . . . . . . . . . . . . . . 706B

Operator's Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23389

Two (2) (9 V) Alkaline Batteries . . . . . . . . . . . . . . . . . . . F1003R

Ground Patch Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N9044

TREK, INC. • 190 Walnut Street • Lockport, NY 14094 • USA • 800-FOR TREK

(fax) • www.trekinc.com • sales@trekinc.com 716-438-7555 • 716-201-1804

RoHS compliant

Low Voltage Safety Compliance (IEC 61010)

Overvoltage Category

CAT I: Peripheral level outputs (less than 60 volts).

Pollution Category

Degree 1: Operate in environments where no pollution or only dry, nonconductive pollution occurs.