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The Elcometer 266 DC High Voltage Holiday Detector (part number D266-4) is a portable instrument for high voltage DC porosity testing of protective coatings up to 7.5mm thick. Pinholes and discontinuities in a coating leave the substrate locally unprotected and seed corrosion, so detecting them before a structure goes into service is central to inspecting pipelines, tanks and other coated steelwork. The Elcometer 266 DC High Voltage Holiday Detector finds these flaws by applying a high voltage across the coating and alarming where a spark passes through to the substrate.
A built-in voltage calculator removes the guesswork: enter the test standard and the coating thickness and the Elcometer 266 DC High Voltage Holiday Detector sets the correct test voltage, with no look-up tables required. Voltage is adjustable from 0.5kV to 1kV in 50V steps and 1kV to 30kV in 100V steps, with an output accuracy of plus or minus 5 percent or plus or minus 50V below 1000 Volts. An internal voltmeter, or jeep tester, runs a closed loop that holds the generated voltage accurate regardless of climatic conditions. Audible and visual alarms, including bright LEDs on the handle, signal a detected flaw.
The waterproof ABS base unit of the Elcometer 266 DC High Voltage Holiday Detector weighs 1.2kg, the handle 0.6kg, and operates from 0 to 50 degrees C on a rechargeable battery pack that fully charges in 4 hours for up to 40 hours of use. Probe handles are interchangeable in 5kV, 15kV and 30kV versions and ordered separately. The Elcometer 266 DC High Voltage Holiday Detector conforms to standards including ISO 2746, ISO 29601, EN 14430, AS 3894.1, several ASTM and NACE methods, and others.
Used in coatings inspection and corrosion control across pipeline, tank and marine work, the Elcometer 266 DC High Voltage Holiday Detector is supplied in South Africa by BAMR, the country's authorised distributor.
Elcometer 266 DC High Voltage Holiday Detector
The Elcometer 266 DC Holiday Detector revolutionises high voltage DC testing of coatings porosity detection making it safer, easier and more reliable than ever before.
- Voltage calculator Automatically sets the correct voltage from your coating thickness value. No need to use look up tables. Enter the test standard and the coating thickness and the gauge will automatically programme the correct voltage.
- Adjustable Voltage No need for screwdriver: 0.5kV - 1kV in 50V steps, 1kV to 30kV in 100V steps. Sensitivity to current can be manually preset or automatically adjusted by the gauge for partially conductive coatings.
- Internal Voltmeter / Jeep tester Ensures that the test voltage equals the selected voltage. The closed loop system ensures that the generated test voltage is accurately measured and continuously controlled, regardless of climatic conditions.
- Interchangeable probe handles Available, 5kV, 15kV and 30kV DC and DC continuous versions.
- Audible and visual alarms Visual and audible alarms are activated when a flaw is detected. Bright LEDs on the handle, as well as a loud audible alarm, clearly indicate if the gauge is on (Red) and when a spark is detected (Blue).
- Battery pack Can be recharged inside or outside the gauge for continued use. Batteries are fully charged within 4 hours and provide up to 40 hours continuous use between charges.
- Screen display Large, backlit display enables easy viewing even in dark environments. When a flaw is detected the backlight also flashes.
- Second hand grip The optional second hand grip is designed for two handed use without compromising its safety. Ideal for testing pipes and tank floors.
- Universal probe adaptors Enables the Elcometer 266 to work with all major holiday detector accessories.
- Dual safety switch on handle
When to use the Elcometer 266 Holiday Detector
Reach for the 266 when you need high voltage DC porosity detection on a thick protective coating and want the gauge to set the test voltage for you. You enter the standard and the coating thickness, and the voltage calculator programmes the correct voltage instead of you working from look up tables. It is the choice for inspectors testing tanks, pipes and floors against a named standard.
- 1Automatic voltage calculatorEnter the test standard and coating thickness and the gauge sets the correct voltage, which removes a common source of error compared with reading values off a table.
- 2Closed loop voltage controlThe internal voltmeter measures and continuously controls the generated voltage regardless of climatic conditions, so your test stays at the selected level out in the field.
- 3Conforms to many standardsIt conforms to a long list including ASTM D 4787, ISO 2746 and several NACE methods, which matters when an inspection report must cite the standard it was tested to.
- 4Two handed pipe and tank useAn optional second hand grip supports two handed work without losing safety, useful when testing pipes and tank floors over long shifts.
Lower-budget alternatives
Ten minutes on a call with one of our specialists usually saves you from buying the wrong instrument.
Book a 10-minute callOr , our product assistant, for an instant answer.
When to use this
When to use the Elcometer 266 Holiday Detector
Reach for the 266 when you need high voltage DC porosity detection on a thick protective coating and want the gauge to set the test voltage for you. You enter the standard and the coating thickness, and the voltage calculator programmes the correct voltage instead of you working from look up tables. It is the choice for inspectors testing tanks, pipes and floors against a named standard.
- 1Automatic voltage calculatorEnter the test standard and coating thickness and the gauge sets the correct voltage, which removes a common source of error compared with reading values off a table.
- 2Closed loop voltage controlThe internal voltmeter measures and continuously controls the generated voltage regardless of climatic conditions, so your test stays at the selected level out in the field.
- 3Conforms to many standardsIt conforms to a long list including ASTM D 4787, ISO 2746 and several NACE methods, which matters when an inspection report must cite the standard it was tested to.
- 4Two handed pipe and tank useAn optional second hand grip supports two handed work without losing safety, useful when testing pipes and tank floors over long shifts.
Lower-budget alternatives
Ten minutes on a call with one of our specialists usually saves you from buying the wrong instrument.
Book a 10-minute callOr , our product assistant, for an instant answer.
Specifications
Specifications
| Part Number | Description | Certificate |
|---|---|---|
| D266-4 | Elcometer 266 1 | ο |
| High Voltage Output Accuracy | ±5% or ±50V below 1000 Volts | |
| Operating Temperature | 0°C to 50°C | |
| Power Supply | Rechargeable battery Pack; battery fully charged within 4 hours | |
| Measured Current Flow Accuracy | ±5% of full scale | |
| Typical Battery Life – | DC5: 40 (20) hours | |
| Backlight Off (On) | DC15: 20 (15) hours | |
| Instrument Case Dimensions | Waterproof, ABS case; 520 x 370 x 125mm | |
| Weight | Base unit (including battery pack): 1.2kg |
- Maximum Output Current
- 0 - 100µA
- Typical Battery Life - DC5 (Backlight Off)
- 40 hours
- Typical Battery Life - DC5 (Backlight On)
- 20 hours
- Typical Battery Life - DC15 (Backlight Off)
- 20 hours
- Typical Battery Life - DC15 (Backlight On)
- 15 hours
- Typical Battery Life - DC30 (Backlight Off)
- 10 hours
- Typical Battery Life - DC30 (Backlight On)
- 8 hours
- Base Unit Weight (including battery pack)
- 1.2kg
- Handle Weight
- 0.6kg
What's in the kit
What's in the kit
Standards
Standards
Accessories
Accessories
| T26620033-1 | Elcometer 266 Probe Handle Voltage1 |
| T26620033-1C | Elcometer 266 Probe Handle Certified1 |
| T26620033-2 | Elcometer 266 Probe Handle Voltage1 |
| T26620033-2C | Elcometer 266 Probe Handle Certified1 |
| T26620033-3 | Elcometer 266 Probe Handle Voltage1 |
| T26620033-3C | Elcometer 266 Probe Handle Certified1 |
| T26620081 | Second Hand Grip |
Downloads
Videos
Videos
Frequently asked questions
How accurate is the high voltage output on the Elcometer 266?
High voltage output accuracy is plus or minus 5%, or plus or minus 50V for outputs below 1000V. Measured current flow accuracy is plus or minus 5% of full scale, with a maximum output current of 0 to 100µA.
How long does the battery last on the Elcometer 266 DC5 configuration?
With the DC5 configuration, battery life is 40 hours with the backlight off and 20 hours with the backlight on. The rechargeable battery pack reaches full charge within 4 hours.
What is the operating temperature range of the Elcometer 266?
The Elcometer 266 operates between 0°C and 50°C. The base unit, including the battery pack, weighs 1.2kg and is housed in a waterproof ABS case measuring 520 x 370 x 125mm.
How does battery life compare across DC5, DC15 and DC30 variants?
Battery life (backlight off / on) is 40/20 hours for DC5, 20/15 hours for DC15, and 10/8 hours for DC30. Higher voltage configurations draw more power and reduce operating time.
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