Category: Holiday detectors

This instrument performs high voltage testing to detect pits, holes, flaws etc in coatings.
The ELC2100B-236V2's convenient carrying case allows the probe handle and accessories to be attached to the front making the ELC2100B-236V2 ideal for field, site or laboratory inspection.
An accessory pouch, which accommodates the additional rechargeable battery (optional) can also be attached to the soft carrying case - thereby extending inspection time without the need for recharging the unit.

  • Robust and fully portable
  • Audio and visual alarms - for noisy environments
  • Supplied with a band brush probe
  • Digital display of output voltage and current
  • Adjustable sensitivity
  • 15kV and 30kV options available with fully adjustable output voltage

The ELC2100B-236V2 is available in two versions: 1 - 15kV and 2 - 30kV.

Each unit provides the User with complete control of voltage and sensitivity settings. Due to the method of operation, the ELC2100B-236V2 minimises the risk of additional damage to a coating and avoids the dangerous act of coating popping off the surface which can occur with some high voltage systems.

Convenient Kit Case

The ELC2100B-236V2 DC Holiday Detector is supplied as a complete kit, allowing the User to begin testing immediately after charging the unit.
The kit is supplied in a hard backed transit case for transportation and long term storage.

Test method:

The High Voltage Detection Technique locates flaws in insulating coatings on conductive substrates. A power supply within the instrument generates a high DC Voltage which is supplied to a suitable probe. An earth voltage return lead from the instrument is connected to an uncoated area of the metal of the test substrate.

As the probe is passed over the coated surface, a flaw is indicated by a spark at the contact point with an audible alarm in the detector and a visual alarm in the probe handle.

Note: This test uses the principle of an electric current conducting through a material. When a spark occurs, the circuit is closed and the alarm sounds indicating a flaw. Varying the DC Voltage varies the distance a spark will "jump" to the metal substrate. The maximum distance a spark will jump is dependant on the dialectric strength of free air.

The High Voltage Technique can be used to locate flaws in coatings on concrete. As most concrete conducts electricity (due to moisure inherent in concrete), the ELC2100B-236V2 can be used.





Accuracy of Voltage Setting

±5% or ±0.2kV

Display Resolution



Range of Coating Thickness


0 - 7.5mm (approximate)

0 - 300mils (approximate)

Voltage Output


0.5 - 30kV in 100V steps


Audio & Visual

Power Supply

NiMH 12V internal rechargeable battery

Battery Life (approximate)

10/12 hours continuous use, the optional external batterypack can increase this to 20/24 hours of continuous use

Unit Dimensions

200 x 170 x 70mm (6 x 7 x 3")

Product Weight (including case and probe)

2.8kg (6lb 3oz)

Packing List

ELC2100B-236V2 DC Holiday Detector, probe handle and lead, band brush probe, 2m (79") and 10m (394") signal return/earth leads, battery charger, carry case, transit case and operating instructions


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