get email updatesElectrostatic Voltmeter Probes
For further probe information and characteristics, click here.| Probe Model and Features | Voltmeter Model | Aperture Shape/ Location | Probe Dimensions H x L x W (mm) |
Speed of Response | Noise (rms) |
|---|---|---|---|---|---|
| 430P-E | 430 | square / end | 6.4 sq x 76 mm L | < 50 µs | < 10 mV |
| 3250 High Sensitivity | 320C | square / side | 30.5 x 28.7 x 57.2 | < 300 ms | < 3 mV |
| PD1216P Very High Sensitivity | 325 | round / side | 10 dia. x 56 L | < 3 ms | < 1 mV |
| 555P-1 miniature | 347 | square / side | 5.6 sq. x 49.8 L | < 3 ms | < 3 mV |
| 555P-4 miniature | 344 347 | square / end | 5.6 sq. x 49.8 L | < 4.5 ms | < 4 mV |
| 6000B-5C high-resolution | 344 347 | round / end | 11.2 dia. x 65.7 L | < 4.5 ms | < 4 mV |
| 6000B-6 high-resolution | 344 347 | round / side | 10.3 dia. x 69.7 L | < 3 ms | < 3 mV |
| 6000B-7C | 323 344 347 | round / end | 1.2 dia. x 65.7 L | < 4.5 ms | < 4 mV |
| 6000B-8 | 323 344 347 | round / side | 9.5 dia. x 68.6 L | < 3 ms | < 3 mV |
| 6000B-13C high-resolution | 344 347 | square / end | 10.2 sq. x 63.7 L | < 4.5 ms | < 3 mV |
| 6000B-14 high-resolution | 344 347 | square / side | 10.2 sq. x 68.7 L | < 3 ms | < 3 mV |
| 6000B-15C | 323 344 347 | square / end | 10.2 sq. x 63.7 L | < 4.5 ms | < 4.5 mV |
| 6000B-16 | 323 344 347 | square / side | 10.2 sq. x 68.6 L | < 3 ms | < 3 mV |
| 6300-7 high temperature (to 100º C) | 323 344 347 | square / end | 11.8 x 11.1 x 76.2 | < 4.5 ms | < 10 mV |
| 6300-8 high temperature (to 100º C) | 323 344 347 | square / side | 11.8 x 11.1 x 76.2 | < 3 ms | < 3 mV |
| 3450 | 341B P0865 | square / side | 11.8 x 11.1 x 76.0 | < 200 µs | < 20 mV |
| 3453ST high temperature (to 100º C) | 341B P0865 | square / side | 11.8 x 11.1 x 76.2 | < 200 µs | < 20 mV |
| 3455ET high temperature (to 100º C) | 341B P0865 | square / end | 11.8 x 11.1 x 76.2 | < 200 µs | < 20 mV |
| 3800E-2 miniature | 368A 370 | square / end | 5.6 sq. x 50 L | 368A < 200 us 370 < 50 us |
368A <
25 mV 370 < 20 mV |
| 3800S-2 miniature | 368A 370 | square / side | 5.6 sq. x 50 L | 368A < 200 us 370 < 50 us |
368 < 25 mV 370 < 20 mV |
| 3870ET-2 high speed | 368A 370 | square / end | 5.6 x 5.6 x 50.0 | 368A < 200 us 370 < 50 us |
368A < 25 mV 370 < 20 mV |
| 3870ST-2 high speed | 368A 370 | square / side | 5.6 x 5.6 x 50.0 | 368A <
200 us
370 < 50 us |
368A < 25 mV 370 < 20 mV |
| 7000ER Only available for Model 370 |
370 | round / end | 8.7 sq. x 69.8 L | 50 µs | < 20 mV |
| 3627 | 370TR | square / side | 11.8 sq. x 72.2 L | < 200 µs | < 20 mV |
| 3629A nonfringing transparent |
370TR | square / side | 11.8 sq. x 72.2 L | < 200 µs | < 20 mV |
Selection Considerations
Aperture Size
The various aperture sizes available permit selection of spatial resolution and noise performance. Smaller aperture sizes provide finer spatial resolution. Larger aperture sizes provide lower noise.
End View/Side View
Trek probes are available with end-viewing or side-viewing detectors to accommodate the constraints of an installation.
Round and Square Bodied Probes
Selected Trek probes are available in round-body and square-body styles to accommodate different mounting requirements.
High Temperature
Probes are available with enhanced operating ranges for high temperature applications.
High Resolution
Probes are available with high resolution for critical measurements.
Transparent Probes
Transparent probes are used in applications where light must pass through the probe, such as photoconductor testing. This allows illumination and measurement of the same spot on the surface. The housing and sensitive electrode of the probe are made of a special optically transparent, electrically-conductive glass.
Special Purpose Probes
Trek application engineers can help solve many problems with custom designs and innovative solutions. Please contact TREK, INC. for more information.
Electrostatic Voltmeters
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Many voltage measurement applications cannot be made using conventional contacting voltmeters because they require charge transfer to the voltmeter, thus causing loading and modification of the source voltage. For example, when measuring voltage distribution on a dielectric surface, any measurement technique that requires charge transfer, no matter how small, will modify or destroy the actual data. In these types of applications a new approach to voltage measurement is needed.
An instrument that measures voltage without charge transfer is called an electrostatic voltmeter. A primary characteristic of an electrostatic voltmeter is that it accurately measures surface potential (voltage) on any kind of material without physical contact and therefore, no charge transfer and loading of the voltage source can occur.
In practice, an electrostatic probe is placed close (1 mm to 5 mm) to the surface to be measured. The electrostatic voltmeter functions to drive the potential of the probe body to the same potential as the measured unknown. This achieves a high accuracy measurement that is virtually insensitive to variations in probe-to-surface distances, as well as preventing arc-over between the probe and measured surface.
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