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Cathodic disbondment testing is a critical accelerated lifespan test used to evaluate coatings on underground metal pipelines. The Top Hex Cathodic Disbondment Tester allows these tests to be carried out in the laboratory to evaluate the performance of barrier coatings on pipeline samples, and supports a wide range of international test standards.
The Top Hex Cathodic Disbondment Tester is available in 4 channel and 16 channel versions. Each channel runs an independent test, all simultaneously, with data logged to non-volatile flash memory within the unit. Tests can be configured via the built-in graphical touchscreen or through the CDT PC software, which is also used to extract the data.
Every Top Hex tester is manufactured in-house in the UK. All Top Hex products are provided with a one year warranty, and Top Hex offers a lifetime repair guarantee on equipment that is out of warranty.
Top Hex Cathodic Disbondment Tester
A cathodic disbondment tester for accelerated lifespan testing of barrier coatings on pipeline samples, available in 4 channel and 16 channel versions. Each channel runs an independent test, all simultaneously, with data logged to non-volatile memory and extracted using the CDT PC software.
- Constant voltage testing: the applied voltage is adjusted automatically to maintain a constant reference voltage (e.g. 1.5V) within a defined tolerance (commonly +/-5mV).
- Constant current testing: the applied voltage is adjusted automatically to maintain the required constant current.
- Manual test mode, constant voltage or constant current.
- Test duration up to 999 days, or continuous.
- Date and time, reference voltage and current logged to non-volatile memory for every test.
- Tests resume automatically after a power interruption, with the event recorded in the log.
- Protected against over-voltage, over-current and short circuit, with tests paused automatically on a fault.
- 4.2" graphic display with touchscreen.
- CDT PC software over Ethernet, connects to an unlimited number of testers and exports data as CSV.
- Optional 32-TC temperature logging module for the 16 channel model: two thermocouple inputs per test channel, time-stamped alongside the test data.
When to choose the Top Hex Cathodic Disbondment Tester
Both the 4 channel and 16 channel versions suit accredited pipeline coating testing on a lab bench, over a long unattended test. Which one to choose comes down to how many samples run at once.
- 1Testing to a named pipeline coating standardThe Top Hex Cathodic Disbondment Tester is built to a wide range of standards for cathodic disbondment testing, including AMPP/NACE TM0115, ASTM G8, and equivalent ISO, DIN, CSA and BS standards. Where a customer's specification calls for accredited disbondment testing on pipeline coatings, this is the right kind of instrument, not a general adhesion or corrosion tester.
- 2Running several samples at once, unattended, over a long testEach channel runs an independent test simultaneously, and a test can run for up to 999 days or continuously, with automatic resume after a power cut. This suits a lab that needs to run multiple coating samples through a long accelerated-lifespan test without watching over it constantly.
- 3Matching channel count to your test loadThe 4 Channel CDT suits up to 4 simultaneous samples; the 16 Channel CDT suits up to 16, and is the only one that takes the optional 32-TC temperature logging module. Choose based on how many samples run at once and whether temperature logging alongside the test data matters.
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 choose the Top Hex Cathodic Disbondment Tester
Both the 4 channel and 16 channel versions suit accredited pipeline coating testing on a lab bench, over a long unattended test. Which one to choose comes down to how many samples run at once.
- 1Testing to a named pipeline coating standardThe Top Hex Cathodic Disbondment Tester is built to a wide range of standards for cathodic disbondment testing, including AMPP/NACE TM0115, ASTM G8, and equivalent ISO, DIN, CSA and BS standards. Where a customer's specification calls for accredited disbondment testing on pipeline coatings, this is the right kind of instrument, not a general adhesion or corrosion tester.
- 2Running several samples at once, unattended, over a long testEach channel runs an independent test simultaneously, and a test can run for up to 999 days or continuously, with automatic resume after a power cut. This suits a lab that needs to run multiple coating samples through a long accelerated-lifespan test without watching over it constantly.
- 3Matching channel count to your test loadThe 4 Channel CDT suits up to 4 simultaneous samples; the 16 Channel CDT suits up to 16, and is the only one that takes the optional 32-TC temperature logging module. Choose based on how many samples run at once and whether temperature logging alongside the test data matters.
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
Model comparison
- Part number
- 4 Channel CDT: 4-CDT-230 (230V AC version) | 16 Channel CDT: 16-CDT-230 (230V AC version)
- Independent, simultaneous tests
- 4 Channel CDT: 4 | 16 Channel CDT: 16
- Measured current
- 4 Channel CDT: 0-1000mA (resolution 0.03mA) | 16 Channel CDT: 0-250mA (resolution 0.01mA)
- 32-TC temperature logging module
- 4 Channel CDT: not compatible | 16 Channel CDT: compatible
- Case size
- 4 Channel CDT: 10.5" x 3U | 16 Channel CDT: 19" x 4U
- Dimensions (W x H x D)
- 4 Channel CDT: 314 x 162 x 322mm | 16 Channel CDT: 530 x 207 x 322mm
- Weight
- 4 Channel CDT: 12kg | 16 Channel CDT: 17kg
- External fusing, 230V AC version
- 4 Channel CDT: 5A | 16 Channel CDT: 3A
Technical specifications (both models)
- Channels
- Independent channels (common cathode)
- Constant voltage
- Automatic test: applied voltage modulated to maintain constant reference voltage
- Constant current
- Automatic test: applied voltage modulated to maintain constant measured current
- Manual test mode
- Constant voltage, constant current
- Calibration mode
- Using CDT PC software
- Measured cell voltage
- 0-5V DC (resolution 0.2 mV)
- Applied voltage
- 0-20V DC (resolution 0.6 mV)
- Protection
- 1A self-resetting fuse (per channel)
- Accuracy
- 1 resolution point
- Calibration
- 2 point linear
- Fault protection
- Over-voltage, over-current, short-circuit. Test pauses automatically with entry in event log
- Test duration
- Days / hours / minutes (maximum 999 days) or continuous
- Test configuration
- Via in-built touchscreen or CDT PC software
- Power fail
- Auto-resume with entry in event log
- Sample profile
- At frequency F1 for interval T1, then at frequency F2 for interval T2, then at frequency F3 until end of test (F: hours / minutes, T: days / hours / minutes)
- Sample data
- Date / time, measured reference voltage, measured current
- Storage
- Non-volatile Flash RAM, over 2,700 date / time stamped results per test
- Data export
- CSV file via CDT PC software
- PC connection
- Ethernet. Software allows connection to an unlimited number of controllers
- PC software
- Start / stop / resume tests, view data / alarm log (tabular / graphical), export data (CSV), manual test mode, calibration of measured cell voltage and current
- Display
- 4.2 inch graphic display with touchscreen
- Display controls
- Start / stop / resume tests, view data / alarm log, manual test mode
- Power supply
- Nominal 230Vac @ 50Hz (230Vac version), nominal 120Vac @ 60Hz (115Vac version)
Conforms to
Conforms to
Accessories
Accessories
| 32-TC-230 | 32-TC temperature logging module (16 channel model), K type thermocouple, 0-250°C (resolution 0.2°C), 230V AC |
| CALIB-KIT-UKAS | Calibration kit: calibration box, test leads and two meters supplied with UKAS certificates |
| CALIB-BOX | Calibration box: power resistor array for validating the tester without a chemical cell, with test leads |
| CA_PLATINUM_0.5mm | Platinum anode wire, 500 mm x 0.5 mm diameter, 99.997% (metals basis) |
| CD_ELCTRD_AG_AGCL | Ag/AgCl reference electrode, glass bodied, re-fillable, 12 mm body |
| CD_ELCTRD_CU_CUSO4 | Cu/CuSO4 reference electrode, glass bodied, re-fillable, 12 mm body |
| CD_ELCTRD_CALOMEL | Calomel reference electrode, glass bodied |
| 934063701 | Red test lead (anode), gold-plated contacts, 32A, 1 m |
| 934066701 | Red test lead (anode), gold-plated contacts, 32A, 2 m |
| 934063700 | Black stackable test lead (common cathode), gold-plated contacts, 32A, 1 m |
| 934066700 | Black stackable test lead (common cathode), gold-plated contacts, 32A, 2 m |
| 930122000 | Crocodile clip, 4 mm connection, stainless steel contact (rated 4A) |
Downloads
Frequently asked questions
What does the Top Hex Cathodic Disbondment Tester do?
The Top Hex Cathodic Disbondment Tester runs accelerated lifespan tests on barrier coatings for underground pipelines. Independent channels test samples simultaneously, and data is logged to non-volatile memory for extraction with the CDT PC software.
What is the difference between the 4 channel and 16 channel versions?
The 4 Channel CDT runs 4 samples at once; the 16 Channel CDT runs 16. The 16 channel version is also the only one that takes the optional 32-TC temperature logging module.
What standards does it test to?
AMPP/NACE TM0115, ASTM G8, ASTM G42, AS 4352, BS 3900-F11, CSA Z245.20, Z245.21 and Z245.22, DIN 30670 and 30678, and ISO 15711 and 21809-1, -2 and -3.
How long can a test run?
Up to 999 days, or continuously. If power is interrupted, the test resumes automatically and the event is recorded in the log.
How is the tester configured and monitored?
Through the built-in 4.2 inch touchscreen, or the CDT PC software over Ethernet, which can connect to an unlimited number of testers and exports data as a CSV file.
What protects the tester against a fault?
The Top Hex Cathodic Disbondment Tester is protected against over-voltage, over-current and short circuit, and pauses the test automatically with an entry in the event log.
Quote on the Top Hex Cathodic Disbondment Tester by close of business.
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Tell us about your application and we will send a quote with lead time and accessories.