Geneq > Materials Testing > Coatings Testing Instruments

Elcometer 266 DC Holiday Detector
 


The Elcometer 266 DC Holiday Detector provides accurate detection of pinholes, flaws, inclusions, thin spots and bubbles in a coating. The gauge has been specifically designed to revolutionise high voltage DC testing of coatings, making it safer, easier and more reliable than previously possible.
  • Current limiting to avoid coating damage: When the Elcometer 266 detects a flaw, and sparks, the current flow reduces to a low level, minimising risk to both the user & the coating.
  • Automatic voltage calculator: No need for lookup tables, simply enter the coating thickness value and select the standard & the gauge will automatically set the voltage.
  • Safety hand grip: Ensures that high voltage can only be generated when the handle is being held.
  • Internal jeep tester: Removing the need for 2 gauges. The closed loop system with internal voltmeter guarantees the voltage output at all times.
  • Specialised handle design: Extended ribbing on the handle provides an effective barrier between the high voltage and the user.
  • Rugged and waterproof to IP65: Rugged, waterproof IP65 case is sealed against the elements.
  • Accurate sensitivity adjustment: Allows use on metallised or slightly damp
    coatings.
  • Rechargeable & replaceable battery packs: Battery packs can be charged inside or outside the gauge.
  • Interchangeable handles: 0.5–5kV, 0.5–15kV or 0.5–30kV adjustable in 0.1kV steps.

Standards
  • AS 3894.1
  • ASTM D 4787
  • ASTM G 6
  • ASTM D 5162-B
  • ASTM G 62-B
  • BS 1344-11
  • EN 14430
  • ISO 2746
  • NACE RP0274
  • NACE RP0188
  • NACE RP0490
  • NACE SP 0188

Information
Pinhole & Porosity Detection
Premature corrosion of a substrate is usually due to the failure of the coating. A major cause of failure is the presence of flaws in the finished coating. Collectively referred to as a coating’s porosity the main types of flaw are described below:

Runs & Sags:
The wet coating moves under gravity leaving a thin dry film.

Cissing:
Occurs when a coating does not re-flow to cover the voids generated by air bubbles being released from the surface of a coating.

Cratering:
Occurs when the substrate is wet or if the coating has poor flow characteristics, thus creating voids in the coating.

Pinholes:
Caused either by air entrapment which is then released from the surface, or by the entrapment of particulates (dust, sand, etc.) which do not stay in place.

Over Coating:
If too much coating is applied to a substrate, as the coating cures it can crack from internal stresses of the coating.

Under Coating:
Areas are not coated, or the coating flows away from particular edges, corners of a substrate and welds. Furthermore over a rough surface profile, insufficient coating may leave the profile’s peaks exposed.

Specifications
Part Number D266----1 D266----2 D266----3
Voltage UK 230V EUR 220V US 110V
Compatible with 0.5 – 5kV handle
Yes
Compatible with 0.5 – 15kV handle
Yes
Compatible with 0.5 – 30kV handle
Yes
Waterproof IP65 case
Yes
High voltage output accuracy
±5% or ±50V below 1000 Volts
Measured current flow accuracy
±5% of full scale
Display resolution
100 Volts, 1μA
Output current
0 – 100μA maximum
Operating temperature
0°C to 50°C (32°F to 120°F)
Power supply
Internal rechargeable lithium ion battery, fully charged within 4 hours
Typical battery life (backlight off) DC5: 40 hours DC15: 20 hours DC30: 10 hours
Typical battery life (backlight on) DC5: 20 hours DC15: 15 hours DC30: 8 hours
Instrument case
High impact ABS
Earth lead length
10m (394”)
Dimensions 520 x 370 x 125mm (20.5 x 14.5 x 5”)
Weight Base unit (including battery pack) 1.2kg (2.7lb) Handle: 0.6kg (1.3lb)
Packing List Elcometer 266 DC Holiday Detector, lithium battery, curly connection cable for high voltage handle, 10m (394”) earth signal return lead with crocodile clip, battery charger and mains cable, band brush, shoulder strap, tough plastic carrying case, operating instructions.
The Elcometer 266 DC Holiday Detector does not include the handle, select the part number for your required handle voltage from the part numbers listed below.

Accesories