ThermoWorks Therma K Plus with 313-158 Probe Review

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By: Bill McGrath, AmazingRibs.com Chief Thermometer Reviewer

Published On: 5/7/2014 Last Modified: 5/1/2025

THERMOWORKS

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.

* Temp range is probe dependent.

Click here to order the Thermometer Kit.

Click here to order additional penetration probes.

Click here to order Hi-Temp probes.

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Product Information:

Thermometer Function:

Hand Held/Instant Read, Leave in Food, Leave in Cooker
Item Price :

134.00
*Price Subject To Change
Where to buy (buying from this supplier supports this website):

THERMOWORKS
Probe:

THS-303-158: length: 4" (10cm), diameter: 0.12" (3mm), tip: 0.06" (1.5mm)
Battery Type:

3xAAA (included)
Battery Life:

10,000 hrs
Safe Operating Range:

32 to 122ºF (0 to 50ºC)
Min & Max Temp:

–148 to 2501ºF (-100 to 1372ºC) (probe dependent)
Display Precision:

0.1º
Actual Temp at 32 Degrees:

32.2
Actual Temp at 130 Degrees:

129.6
Actual Temp at 225 Degrees:

225.0
Actual Temp at 325 Degrees:

325.3
Speed from 32 to 212 Degrees:

4
Speed from 32 to 212 Degrees:

4
Numbers Display Size:

0.5" (12mm)
Water Resistance Rating:

Not specified
Weight:

4.6oz (130g)
C/F Switch:

Built in CF switch
Backlight:

Built in Backlight
Adjustable Options:

1
Color Options:

Black
Thermometer Sensor:

Thermocouple
App:

No
Logging:

No
Included:

Thermometer, Case, Instructions, Certificate of Calibration
Available Accessories:

Many to choose form - see links
Alarms:

No

Manufacturer:

Bill McGrath, AmazingRibs.com Chief Thermometer Reviewer - Bill McGrath is AmazingRibs.com's Thermometer Maven. He has sophisticated equipment, an electrical engineering degree from Cornell University, and an MBA (almost) from UC Berkeley.

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