Eoprobe to measure E-field (EMF)

 

The Kapteos eoProbe measures one component of the electric field vector based on the electro-optic technology. This Ultra-Wide Band sensor allows accurate measurements in almost any location and environment (air, liquids, gases, vacuum) under harsh conditions. Each eoProbe is delivered with a Routine Test report valid for 2 years. This probe must be used with the eoSense converter.

 

Kapteos eoProbe Electric Field Probe Data Sheet

 

Kapteos eoProbe BL5-Air-SP01 Electric Field Probe Data Sheet

 

Application Note: Comparison of different E-field measurement systems

 

12 EMF eoprobe versions to match your needs

 

Types of eoProbes:

Transverse type: the eoProbe measures the concerned E-field vector when it is orthogonal to the eoProbe

Longitudinal type: the eoProbe measures the concerned E-field vector when it is in line with the eoProbe

Reference	Environment	Sensitivity – Bandwidth	Type
ET5-air	Low permittivity (Air / oils)	250 mV/m – 30 Hz … 10 GHz	Transverse
ET1-air	Low permittivity (Air / oils)	500 mV/m – 30 Hz … 50 GHz	Transverse
EL5-air	Low permittivity (Air / oils)	50 mV/m – 30 Hz … 10 GHz	Longitudinal
EL1-air	Low permittivity (Air / oils)	200 mV/m – 30 Hz … 50 GHz	Longitudinal
ET5-vac	Low permittivity (vacuum)	250 mV/m – 30 Hz … 10 GHz	Transverse
ET1-vac	Low permittivity (vacuum)	500 mV/m – 30 Hz … 50 GHz	Transverse
EL5-vac	Low permittivity (vacuum)	50 mV/m – 30 Hz … 10 GHz	Longitudinal
EL1-vac	Low permittivity (vacuum)	200 mV/m – 30 Hz … 50 GHz	Longitudinal
ET5-bio	High permittivity (water based liquids)	50 mV/m – 30 kHz … 10 GHz	Transverse
ET1-bio	High permittivity (water based liquids)	200 mV/m – 30 kHz … 50 GHz	Transverse
EL5-bio	High permittivity (water based liquids)	50 mV/m – 30 kHz … 10 GHz	Longitudinal
EL1-bio	High permittivity (water based liquids)	200 mV/m – 30 kHz … 50 GHz	Longitudinal

 

Main specifications

Characteristics	Values
Sensitivity and bandwidth	See above eoProbe versions table
Dynamic of measurement	≥ 130 dB.√Hz
Selectivity	≥ 50 dB
Spatial resolution	≤ 1 mm
Operating temperature	0 … +50 °C (32 … 122 °F)
Operating pressure	0 … 2030 hPa (0 … 29.4 PSI)
Max E-field without damage	10 MV/m
Max B-field without damage	4.7 Tesla
Ingress protection rating	IP 67 (sensor only)
Chemical compatibility of gases	Air, nitrogen, plasmas, SF6
Chemical compatibility of liquids	Water, oils, alcohols, biological liquids
Probe cleaning	Clean lightly moistened with Isopropyl alcohol
Fiber optic diameter	2.8 mm (see data sheet for vacuum)
Optic fiber minimum bend radius	40 mm (see data sheet for vacuum)

 

A flexible design

The eoProbe is manufactured with 5 meters of fiber optic length. You need more distance? A fiber optic extension accessory is available up to a total of 100 meters.

eoProbe dimensions

Permittivity εr

Crystal: 42

Air probe packaging: 3.3

Bio probe packaging: 23

Fibre optic: 5

Main advantages

Vector near and far E-field measurement

Thanks to its high performances, the eoProbe can measure both near and far E-field.

No impact on the measured E-field

The eoProbe construction does not include any metal parts, hence the measured electric field is not perturbated. The eoProbe measures the exact E-field.

Fully insulated probe

Without any metal elements inside the probe, eoProbe is fully insulated. It is then possible to measure E-field under very high potential (several kV).

 

Ultra-Wideband

Thanks to its technology based on Pockels effect, the probe can measure E-fields from 10 Hz up to 50 GHz with an excellent linearity.

 

High resolution and compactness

Its high compactness and sub-millimetric spatial resolution allows to measure very precisely the E-field.

 

Outdoor operation

Even under outdoor conditions (0 to 50°C for the probe), E-field measurement can be performed with good results.

 

Accessories for the eoProbeeoPod for eoProbe sensors

 

This accessory allows via its articulated arm to maintain the probe on a specific location. It is fully dielectric, hence it can be used near E-field sources.
2 versions are available:
• One for air and vacuum probes
• One for bio probes

 

Kapteos eoPod – eoProbe Electric Field Probe articulated arm Data Sheet

 

EOP-SH Ring to maintain 2 or 3 probes in the same direction

The EOP-SH Ring is attached to the eoProbe to allow 3 probes to measure all 3 axis (X, Y and Z) of an electric field.

The EOP-SH Ring is clearly marked to identify the orthogonal components of the vector for the transverse probes. 2 transverse probes and 1 longitudinal probe can be used with this ring. The ring material does not perturbate the measurement.

 

 

EOP-HLD holder to maintain 2 or 3 probes at 90° to measure the 3 axis (X, Y and Z) of the electric field when using 3 longitudinal eoProbe. The holder material does not perturbate the measurement.

 

eoLink Fiber optic extension

The fiber optic extension is inserted between the eoSense converter and an eoProbe sensor to increase the distance up to a maximum of 100 meters. A rugged version for outdoor usage is available in standard.

 

Kapteos eoLink Fiber Optic Extension Data Sheet

eoCal for electric field probe calibration

For a very accurate measurement inside liquid medium or air, eoCal is an easy and fast calibration accessory of your electric field probes.

 

Kapteos eoCal Electric Field Probe Calibration Data Sheet

 eoVac – eoprobe vacuum feed-through

Kapteos removable vacuum feed-through eoVacTM allows you to use air line electric (E) field probes eoProbeTM in a vacuum chamber when low to medium vacuum down to 0.5 hPa (or mbar) is sufficient.

 

eoVacTM presents the main following advantages:

• no additional insertion loss,

• easy to operate,

• low cost in comparison with any other vacuum optical feed-through.

 

Kapteos eoVac Vacuum feed through for eoProbe Data Sheet