ThermoWorks
Therma K Plus with 313-158 Probe
Best professional tool for precise temperature monitoring.
The ThermoWorks Therma K Plus Kit is an expensive thermometer that exhibits superb accuracy and very rapid response times. The readout cannot be left in the oven/grill while cooking, but cabled probes can, making this a versatile unit that can act as a rapid-read hand-held or an in-food/in-cooker thermometer. The thermometer can accept any K-type thermocouple probe. The thermometer’s inherent temperature range is –148 to 2501ºF (-100 to 1372ºC), but with the kit probe, the temperature range is a more suitable -58 to 482ºF (-50 to 250ºC). Other probes can extend the range considerably, but our focus here is on food temperature measurements. The unit does not have a water-resistant rating, but otherwise it has all the features one might want: min/max functions, a hold button, a backlight and F/C flexibility. The accuracy is right-on, and this probe reacts almost instantly, going from ice water to boiling water in about 4 seconds. The battery life is so long that you might never need to change them. The manufacturer’s contact info, including address, telephone number, website and e-mail, is found on the instruction sheet. The thermometer is covered by a 1 year warranty. A certificate of calibration is included. While this thermometer isn’t cheap, it is well made and performs with the best of them. For these reasons, we give it a Gold medal.
$134.00
More Therma K Options
Owner Satisfaction
4.7
/ 5
Category Rank
15
/ 960
#15 in Cooking Thermometers
Price vs Category Average
+201%
Above average
Who it's for
- Professionals and serious home users demanding precise temperature control
- Cooks, scientists, and technicians needing adaptable temperature measurement
- Busy chefs, field technicians, and industrial workers in demanding settings
Who should skip it
- Budget-conscious buyers or casual users needing only occasional temperature checks
- Specialists requiring dedicated probes for unique, highly specific measurement tasks
- Novice users or those preferring extremely simple, single-button operation devices
Performance breakdown
Read Speed
Temperature readings stabilize almost instantly for precise, real-time cooking adjustments.
Probe Durability
Commercial-grade construction stands up to heavy daily kitchen abuse.
Thermal Accuracy
Laboratory-level precision ensures your proteins are cooked exactly to target.
Ergonomic Design
The handheld unit feels balanced and comfortable during long smoking sessions.
Interface Simplicity
Intuitive button layout allows for quick operation with messy, wet hands.
Water Resistance
Splash-proof casing easily survives accidental spills and humid kitchen environments.
What customers say
Customers consistently praise the Therma K Plus with 313 158 Probe for its exceptional reliability and robust build quality. Users frequently highlight its dependable performance, noting that it consistently delivers accurate readings essential for various applications. The device's durable construction instills confidence, making it a trusted tool that withstands regular use. Many appreciate its straightforward operation, contributing to a highly positive user experience. This combination of unwavering performance and solid construction makes it a standout choice for those needing precision.
Know before you buy
The Therma K Plus is a professional-grade thermocouple instrument, meaning it offers significantly faster response times and a wider temperature range than typical consumer-grade thermistors. It is designed for users who need high-precision readings in demanding environments.
The device features a standard miniature thermocouple connector, making it compatible with a wide range of Type K thermocouple probes. While the included 313-158 probe is excellent for general cooking, you can swap it out for specialized probes like air, surface, or needle sensors depending on your specific needs.
The Therma K Plus is rated IP67, meaning it is dust-tight and can withstand immersion in water up to one meter for 30 minutes. This makes it highly durable for messy kitchen environments and easy to clean under a running tap.
While the unit comes factory-calibrated for high accuracy, it does feature a 'Trim' function that allows you to perform a single-point calibration. This is useful if you want to adjust the reading to match a known standard, such as an ice bath.
The device is highly efficient, typically providing up to 2,000 hours of battery life. It also includes an auto-off feature that can be configured to save power when the unit is not in active use.
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