Trek 325 DC Stable Electrostatic Voltmeter Manuel d'utilisateur télécharger pdf

High-Sensitivity , DC Stable

Electrostatic Voltmeter

The Trek Model 325 Electrostatic Voltmeter is a versatile

instrument used for performing noncontacting electrostatic

voltage measurements in applications which include

contact potential (surface work function) determination,

materials evaluation and electret studies. The Model 325

was specifically designed for high sensitivity applications to

allow highly accurate, low noise, noncontacting

measurement of electrostatic voltages of 0 to ±40 V over a

wide range of probe-to-surface distances.

Special features of the Model 325 allow adjusting the

performance of the unit to compensate for specific test

conditions. A calibrated Null Voltage supply of 0 to ±10 volts

nulls measured surface contact potential when measuring

voltages on test surfaces. A response Speed Control adjusts

the AC response of the Model 325. A Drift/Spacing Null

Adjustment minimizes the variation in monitored voltage

values as the probe to test surface spacing changes.

Trek’s patented low impedance probe sensor assures

measurement accuracy which is essentially independent of

probe-to-test-surface spacing while eliminating the external

environmental effects of high humidity and contamination,

such as airborne dust, toner, ions and chemicals, on

measurement accuracy.

The Model 325 is bench top operable or, with optional

hardware, in a half 9½-inch or standard 19-inch rack.

A dual range front panel 3½ digit LED display resolves

±10 mV. The measured voltage can also be monitored

through a precision 1:1 voltage monitor output and/or a

10:1 voltage monitor output.

! Measurement Range:

0 to ±40 V DC or Peak AC

! Sensitivity: 1 mV

! Noise: Less than 1 mV

rms, Referenced to

Measured Voltage

! High Seed of Response:

Less Than 3 ms for a

10 V Step

! Voltage Monitor

Accuracy: Better Than

0.05% of Full Scale

! Null Voltage Source:

0 to ±10 Volt Calibrated

Supply (nulls measured

surface contact potential

in reference to probe’s

gold sensing electrode)

! Drift Spacing/Null

Adjustment (minimizes

measured variations in

voltage as probe to test

surface spacing changes)

! Voltage Monitor Outputs:

1:1 and 10:1 of measured

voltage

Model 325

Measurement and Power Solutions

www.trekinc.com

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Model 325 1
Model 325 Specifications 2

Résumé du contenu

Page 1 - Model 325

High-Sensitivity , DC StableElectrostatic VoltmeterThe Trek Model 325 Electrostatic Voltmeter is a versatile instrument used for performing no

Page 2 - Model 325 Specifications

Model 325 Ordering Information Trek CertificationProbeItem Part No.Model 325-L (90 to 127 V AC) . . . . . . . . . . . . . . . . . . . . . . 325-L-CEM

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Trek 325 DC Stable Electrostatic Voltmeter Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Équipement Trek 325 DC Stable Electrostatic Voltmeter. Trek 325 DC Stable Electrostatic Voltmeter User Manual Manuel d'utilisatio

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