OVERVIEW
THIS PRODUCT WAS DISCONTINUED MAY 2023
• Small Size ~ 2-1/16" (52 mm) Round
• Max temperature "Peak hold" display capture capability
• High set-point alarm LED with internal relay contact
• °F/°C selectable
• Accepts one probe
• °F/°C selectable
• High set-point alarm with internal relay contact
• Max temperature "Peak hold" display capture capability
• Made in the USA
Plug and Play Compatible with the Following TSC Products:
• EGT Probes - All
• CHT Sensors - All Type K
• Stick-On Probes - All Type K
• Thermocouples - All Type K
Temperature Probe not included, please purchase separately
MADE IN THE USA
The Sport Duty series digital pyrometer is available as single or dual channel, with advanced features including max temperature recall and high temperature alarm. All this in a sleek, compact package, that’s competitively priced. This miniature gauge is in an industry standard round 52 mm package. The bright four digit LCD display is easy to read, even in direct sunlight. Setup and programming is simple using the three front panel push buttons. The gauge includes a fast response feedback alarm with visual alerts, plus an internal relay is triggered that can be used to control an external device, such as a fan or buzzer. You can easily access the max temperature recall feature to display the peak temperature stored in memory. The Sport Duty gauges are manufactured using high quality materials for optimum performance in your demanding application.
IMPORTANT DISCLAIMER IF YOU ARE CONSIDERING USING THIS INSTRUMENT IN AN AIRCRAFT:
This instrument is not certified by the FAA. Fitting of this instrument to certified aircraft is subject to the rules and conditions pertaining to such in your country. Please check with your local aviation authorities if in doubt. This instrument is intended for ultralight, microlight, homebuilt and experimental aircraft. Operation of this instrument is the sole responsibility of the pilot in command (PIC) of the aircraft. This person must be proficient and carry a valid and relevant pilot’s license. This person has to make themselves familiar with the operation of this instrument and the effect of any possible failure or malfunction. Under no circumstances does The Sensor Connection or manufacturer condone usage of this instrument for IFR flights.
Options:
TECHNICAL SPECIFICATIONS
Input: | Type K Thermocouple (1 channel) |
Input Resistance: | 60k Ω |
Display Range: | +32 to +2282°F (0 to +1250°C) |
Accuracy: | <+/- 0.5% of Full Scale |
Display Resolution: | 1°F (1°C) |
LED Display: | Red, 4-digit, 0.4 inch (10 mm high), 0.5 second update rate |
Microprocessor Sampling Rate: | 10 samples/second |
Peak Capture Rate: | 3 samples/second |
Environmental Operating Humidity Range: | 0 to 95% Max. RH (non-condensing) |
Environmental Operating Temperature Range: | -40 to +185°F (-40 to +85°C) |
Front Bezel Rating: | IP65 |
Supply Voltage: | +9 to +32 VDC |
Current Draw: | 50 mA (nominal) |
Alarm Relay Contact Rating: | 2 Amp |
Case Dimensions: | OD: 2.00 (51 mm) |
Panel Cutout Dimensions: | 2.05 (52 mm) Round Hole |
Weight: | 1.8 ounces (50 grams) |
DOCUMENTS & DOWNLOADS
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About - SMTS-TC Miniature Surface Mount Threaded Stud CHT Sensor
Threaded Stud Mounting for Surface Temperature Measurement
The SMTS-TC is designed for applications where a cylinder head temperature sensor needs to mount to a tapped surface rather than under a spark plug. A threaded stud fitting — commonly specified in #8-32, but also available in other thread sizes — allows the sensor to be screwed directly into a tapped hole in the engine case, cylinder head, or any metallic surface where a threaded boss is accessible.
This approach is common in R&D and engine testing environments where the measurement point is intentionally designed into the test article, providing a clean and secure attachment that maintains position through vibration and thermal cycling without relying on external clamping forces.
The sensor is available with Type E, J, K, or T thermocouple calibrations, along with grounded or ungrounded junction options depending on application requirements.
Temperature Range and Response Characteristics
With a rated temperature range of -50°F to 500°F (-45°C to 260°C), the SMTS-TC is suited for cylinder heads, intake manifolds, oil systems, transmission cases, and other powertrain surfaces encountered in motorsports and dynamometer testing.
The response time of approximately 6 seconds (time constant) reflects the nature of a surface-mounted sensor, where the thermocouple junction reaches thermal equilibrium through conductive contact with the mounting surface. Response time is defined as the time required to reach 63.2% of a step temperature change.
For applications requiring faster response to rapidly changing temperatures, an in-stream probe is more appropriate. For steady-state surface monitoring, this response speed is typically sufficient.
Environmental Rating and Cable Construction
The SMTS-TC carries an IP64 rating, meaning it is protected against dust ingress and resistant to water splashed from any direction.
The sensor uses 24 AWG stranded conductors with FEP insulation, which provides resistance to fuel, oil, and other automotive fluids while maintaining flexibility across a wide temperature range.
This construction makes it suitable for underhood and test cell environments where exposure to heat, vibration, and contaminants is expected.
Accuracy and Integration
The sensor meets Special Limits of Error accuracy, defined as the greater of ±0.4% of reading or ±1.1°C.
It is available with multiple connector options, including mini and standard thermocouple plugs and jacks, allowing direct connection to compatible instrumentation without additional adapters.
As with all thermocouples, the receiving instrument must be configured for the correct thermocouple type to ensure accurate measurement.