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CTN-300 Coating Thickness Gauge
Regular price
Sale price
$461.70 USD
Regular price
$513.00 USD
Shipping calculated at checkout.
Ordering Notes:
- BRK CTN-300 meter and probes are sold separately. Please select the desired probe for your specific application when purchasing this meter.
- All BRK meters and probes ship direct from the manufacturer and require 10-15 business days for shipping.
- Custom options and configurations are also available. Please contact us if you need help with your specific application.
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The BRK CTN-300 Coating Thickness Gauge is designed for versatile, high-precision measurement of coating layers on a wide range of substrates.
It combines both magnetic induction and eddy current measurement principles with intelligent calibration algorithms to deliver accurate, consistent results from ultra-thin decorative coatings to industrial-grade protection layers.
Compatible with an array of specialized probes, the CTN-300 handles ferrous, non-ferrous and aluminum substrates as well as complex curved surfaces such as pipes, screws and small components. Its broad measurement range and robust feature set make it suitable for manufacturing quality control, metal processing inspection, plating and anodizing verification, and corrosion protection checks in demanding industrial environments.
-
Extensive Measurement Range
Supports coating thickness measurement from 0.003 mm (3 µm) up to 13 mm (13,000 µm), covering a wide spectrum of coating types and thicknesses. -
Multi-Probe Compatibility
Works with up to 13 dedicated probes including magnetic, non-magnetic, high-temperature and right-angle variants for maximum versatility. -
Magnetic Induction & Eddy Current Technologies
Automatically detects substrate type (ferrous or non-ferrous) and applies the correct measurement principle for accurate results. -
High Precision & Intelligent Calibration
Advanced sensing algorithms and automatic calibration routines provide reliable, repeatable measurements with minimal user setup. -
Versatile Measurement Modes
Supports single measurement, continuous scan and statistical functions (average, max, min, count, standard deviation) for flexible inspection workflows. -
Robust Data Handling
Built-in data storage with export capability and high/low limit alarms for quality control and reporting. -
Portable & Field Rated
Durable metal housing and rechargeable lithium-ion battery support extended use in workshop and field environments.
Typical Applications
- Industrial painting and powder coating inspection
- Plating, anodizing and surface treatment verification
- Automotive and aerospace coating quality control
- Marine and shipbuilding corrosion protection monitoring
- Manufacturing and fabrication process inspection
- General laboratory and materials research
What’s Included
- CTN-300 gauge main unit
- Calibration foil set
- Carrying case
- Charging cable
- User manual
Specifications
| Measurement Principle | Magnetic induction and eddy current (automatic substrate detection) |
| Measurement Range | Up to 13 mm (13,000 µm) depending on probe configuration |
| Resolution | 0.1 µm (all probes):contentReference[oaicite:9]{index=9} |
| Display Mode | Numerical readout with high contrast LCD |
| Statistical Functions | Average, Maximum, Minimum, Count, Standard Deviation:contentReference[oaicite:10]{index=10} |
| Operational Modes | Direct measurement, Continuous scan:contentReference[oaicite:11]{index=11} |
| Data Storage | 10 groups, 1000 readings total:contentReference[oaicite:12]{index=12} |
| Power Supply | Rechargeable lithium-ion battery:contentReference[oaicite:13]{index=13} |
| Probe Connection | Detachable cable (interchangeable probes):contentReference[oaicite:14]{index=14} |
Downloads
Probes
Part Number: Fe
Magnetic induction probe for measuring coating thickness on ferrous substrates such as steel and iron. Ideal for paint, plating and corrosion protection coatings.
Part Number: Fe-HT
Designed for coating measurements on hot ferrous surfaces during production processes such as galvanizing and powder coating.
Part Number: NFe
Eddy current probe for coating thickness measurement on non-ferrous metals including aluminum, copper and brass.
Part Number: NFe-HT
High-temperature eddy current probe for coating inspection on heated non-ferrous metals such as aluminum components.
Part Number: N400
Precision eddy current probe designed for accurate measurement of thin coatings on non-ferrous substrates.
Part Number: N3
Extended-range probe for measuring thicker coatings on aluminum and other non-magnetic substrates.
Part Number: F3
Magnetic probe designed for measuring thicker protective coatings on steel including epoxy and powder coatings.
Part Number: F3-HT
High-temperature version of the F3 probe for measuring thick coatings on heated steel components.
Part Number: F5
Wide-range probe designed for heavy protective coatings and thick industrial paint layers on steel.
Part Number: F10
Extra-wide range probe capable of measuring extremely thick coatings and insulation layers.
Part Number: F400
Compact magnetic probe designed for precise measurement of thin coatings on ferrous substrates such as steel and iron.
Part Number: F500
High-precision probe optimized for measuring thin coatings on small steel components.
Comparison Chart
| Coating Thickness Gauges | CTN-210B | CTN-210C | CTN-230 | CTN-300 | BT-T7 | BT-T7A |
|---|---|---|---|---|---|---|
| Type / Principle | Magnetic induction & eddy current coating gauge | Magnetic induction & eddy current coating gauge |
Magnetic induction & eddy current coating gauge. |
Magnetic induction & eddy current coating gauge, multi-probe system | Through-coating ultrasonic thickness gauge | Through-coating ultrasonic thickness gauge |
| Measurement Range | Probe dependent, up to 0–10,000 μm | Probe dependent, micron to millimeter range | Typically up to ~1250 µm | Probe dependent, up to 13 mm (13,000 μm) depending on probe | 0.7–500 mm (standard mode, steel) | 0.7–350 mm (standard mode, steel) |
| Through-Coating Capability | Measures coating thickness only | Measures coating thickness only | Measures coating thickness only | Measures coating thickness only | Measures substrate thickness through coatings up to 5 mm | Measures substrate thickness through coatings up to 3 mm |
| Resolution | 0.1–1 μm depending on probe | 0.1–1 μm depending on probe | Up to 0.1 µm depending on probe | Up to 0.1 μm depending on probe | 0.01 mm | 0.01 mm |
| Accuracy | Typically ±(2%H + 1 μm) after calibration | Typically ±(1%H + 1 μm) after calibration | Approx. ±(1–3%) after calibration | Probe dependent, industrial QC grade | ±(0.6%H + 0.05) mm | ±(0.6%H + 0.1) mm |
| Probe Support | Multiple interchangeable probes | Multiple interchangeable probes | Multiple interchangeable probes | Multiple interchangeable probes | Standard, micro, coarse and high-temp probes | Standard, micro, coarse and high-temp probes |
| Data Handling | Group storage with PC export | Internal memory with USB/RS232 export | Group storage with PC export | Data storage with statistical functions | Standard thickness readout | Standard thickness readout |
| Power Supply | Rechargeable lithium battery | Rechargeable battery | AA Batteries | Rechargeable lithium-ion battery | Rechargeable Li-ion battery, 160+ hrs typical | AA batteries, 50+ hrs typical |
| Primary Use Case | Industrial coating thickness measurement | Advanced coating inspection with data functions | Industrial coating thickness measurement | High-end multi-probe coating inspection | Substrate thickness through coatings | Substrate thickness through coatings, mid-range |
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Product Information
Product Information
The BRK CTN-300 Coating Thickness Gauge is designed for versatile, high-precision measurement of coating layers on a wide range of substrates.
It combines both magnetic induction and eddy current measurement principles with intelligent calibration algorithms to deliver accurate, consistent results from ultra-thin decorative coatings to industrial-grade protection layers.
Compatible with an array of specialized probes, the CTN-300 handles ferrous, non-ferrous and aluminum substrates as well as complex curved surfaces such as pipes, screws and small components. Its broad measurement range and robust feature set make it suitable for manufacturing quality control, metal processing inspection, plating and anodizing verification, and corrosion protection checks in demanding industrial environments.
-
Extensive Measurement Range
Supports coating thickness measurement from 0.003 mm (3 µm) up to 13 mm (13,000 µm), covering a wide spectrum of coating types and thicknesses. -
Multi-Probe Compatibility
Works with up to 13 dedicated probes including magnetic, non-magnetic, high-temperature and right-angle variants for maximum versatility. -
Magnetic Induction & Eddy Current Technologies
Automatically detects substrate type (ferrous or non-ferrous) and applies the correct measurement principle for accurate results. -
High Precision & Intelligent Calibration
Advanced sensing algorithms and automatic calibration routines provide reliable, repeatable measurements with minimal user setup. -
Versatile Measurement Modes
Supports single measurement, continuous scan and statistical functions (average, max, min, count, standard deviation) for flexible inspection workflows. -
Robust Data Handling
Built-in data storage with export capability and high/low limit alarms for quality control and reporting. -
Portable & Field Rated
Durable metal housing and rechargeable lithium-ion battery support extended use in workshop and field environments.
Typical Applications
- Industrial painting and powder coating inspection
- Plating, anodizing and surface treatment verification
- Automotive and aerospace coating quality control
- Marine and shipbuilding corrosion protection monitoring
- Manufacturing and fabrication process inspection
- General laboratory and materials research
What’s Included
- CTN-300 gauge main unit
- Calibration foil set
- Carrying case
- Charging cable
- User manual
Specifications
| Measurement Principle | Magnetic induction and eddy current (automatic substrate detection) |
| Measurement Range | Up to 13 mm (13,000 µm) depending on probe configuration |
| Resolution | 0.1 µm (all probes):contentReference[oaicite:9]{index=9} |
| Display Mode | Numerical readout with high contrast LCD |
| Statistical Functions | Average, Maximum, Minimum, Count, Standard Deviation:contentReference[oaicite:10]{index=10} |
| Operational Modes | Direct measurement, Continuous scan:contentReference[oaicite:11]{index=11} |
| Data Storage | 10 groups, 1000 readings total:contentReference[oaicite:12]{index=12} |
| Power Supply | Rechargeable lithium-ion battery:contentReference[oaicite:13]{index=13} |
| Probe Connection | Detachable cable (interchangeable probes):contentReference[oaicite:14]{index=14} |
Downloads
Probes
Part Number: Fe
Magnetic induction probe for measuring coating thickness on ferrous substrates such as steel and iron. Ideal for paint, plating and corrosion protection coatings.
Part Number: Fe-HT
Designed for coating measurements on hot ferrous surfaces during production processes such as galvanizing and powder coating.
Part Number: NFe
Eddy current probe for coating thickness measurement on non-ferrous metals including aluminum, copper and brass.
Part Number: NFe-HT
High-temperature eddy current probe for coating inspection on heated non-ferrous metals such as aluminum components.
Part Number: N400
Precision eddy current probe designed for accurate measurement of thin coatings on non-ferrous substrates.
Part Number: N3
Extended-range probe for measuring thicker coatings on aluminum and other non-magnetic substrates.
Part Number: F3
Magnetic probe designed for measuring thicker protective coatings on steel including epoxy and powder coatings.
Part Number: F3-HT
High-temperature version of the F3 probe for measuring thick coatings on heated steel components.
Part Number: F5
Wide-range probe designed for heavy protective coatings and thick industrial paint layers on steel.
Part Number: F10
Extra-wide range probe capable of measuring extremely thick coatings and insulation layers.
Part Number: F400
Compact magnetic probe designed for precise measurement of thin coatings on ferrous substrates such as steel and iron.
Part Number: F500
High-precision probe optimized for measuring thin coatings on small steel components.
Comparison Chart
| Coating Thickness Gauges | CTN-210B | CTN-210C | CTN-230 | CTN-300 | BT-T7 | BT-T7A |
|---|---|---|---|---|---|---|
| Type / Principle | Magnetic induction & eddy current coating gauge | Magnetic induction & eddy current coating gauge |
Magnetic induction & eddy current coating gauge. |
Magnetic induction & eddy current coating gauge, multi-probe system | Through-coating ultrasonic thickness gauge | Through-coating ultrasonic thickness gauge |
| Measurement Range | Probe dependent, up to 0–10,000 μm | Probe dependent, micron to millimeter range | Typically up to ~1250 µm | Probe dependent, up to 13 mm (13,000 μm) depending on probe | 0.7–500 mm (standard mode, steel) | 0.7–350 mm (standard mode, steel) |
| Through-Coating Capability | Measures coating thickness only | Measures coating thickness only | Measures coating thickness only | Measures coating thickness only | Measures substrate thickness through coatings up to 5 mm | Measures substrate thickness through coatings up to 3 mm |
| Resolution | 0.1–1 μm depending on probe | 0.1–1 μm depending on probe | Up to 0.1 µm depending on probe | Up to 0.1 μm depending on probe | 0.01 mm | 0.01 mm |
| Accuracy | Typically ±(2%H + 1 μm) after calibration | Typically ±(1%H + 1 μm) after calibration | Approx. ±(1–3%) after calibration | Probe dependent, industrial QC grade | ±(0.6%H + 0.05) mm | ±(0.6%H + 0.1) mm |
| Probe Support | Multiple interchangeable probes | Multiple interchangeable probes | Multiple interchangeable probes | Multiple interchangeable probes | Standard, micro, coarse and high-temp probes | Standard, micro, coarse and high-temp probes |
| Data Handling | Group storage with PC export | Internal memory with USB/RS232 export | Group storage with PC export | Data storage with statistical functions | Standard thickness readout | Standard thickness readout |
| Power Supply | Rechargeable lithium battery | Rechargeable battery | AA Batteries | Rechargeable lithium-ion battery | Rechargeable Li-ion battery, 160+ hrs typical | AA batteries, 50+ hrs typical |
| Primary Use Case | Industrial coating thickness measurement | Advanced coating inspection with data functions | Industrial coating thickness measurement | High-end multi-probe coating inspection | Substrate thickness through coatings | Substrate thickness through coatings, mid-range |
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Product Category: Measuring Tools & Sensors
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