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Congratulations

Thermapen ONE is a precision thermometer used for many applications, including cooking. 

With proper care, it will offer accurate measurements for many years. Thermapen ONE 

includes several new features, including: one-second response time and increased accuracy. 

Instrument Operation

The instrument is switched on by unfolding the thermocouple 

probe until the display comes on. Conversely, the instrument 

is turned off by folding the probe away and lightly pressing 

the tip into the rubber probe retainer located at the bottom 

rear of the instrument. It is recommended to store the probe 

in the closed position when not in use.

Do not force the probe further than 180° when opening or 

damage to the rotating  hub may occur.

The micro-thermocouple sensor is located at the tip of the probe shaft. Minimum immersion 

is only 1/8" (3 mm). For best results, immerse or penetrate the probe into the food item so the 

probe tip is in the place you want to measure. In food, this should normally be at the center 

of the thickest part. 

Thermapen ONE will read to within 1°F of the actual 

temperature of an ice bath within one second. Reading times 

in other foods may vary slightly.

Do not immerse the probe all the way to the plastic 

rotating hub. Avoid getting flour, moisture, or oil on the 

hub itself. Although there is an O-ring seal, oils can work 

their way past the seal and accumulate inside the hub and 

may cause failure. The probe tip is sharp. Use caution to 

avoid injury. Do not “stab” the material to be measured. 

Use steady force to penetrate meats or semi-solids. Avoid 

bone. Do not lift or flip heavy meats with the probe tip. 

The probe shaft is hollow and contains a sensor. If bent, 

it may fail.

Rotating hub

0.1”

0.55”

0.65”

0.125 dia”

Probe Tip

Sensor location

Minimum immersion 1/8"

Thermapen

® 

ONE

Operating Instructions

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165°F

140°F

Summary of Contents for ONE

Page 1: ...imum immersion is only 1 8 3 mm For best results immerse or penetrate the probe into the food item so the probe tip is in the place you want to measure In food this should normally be at the center of the thickest part Thermapen ONE will read to within 1 F of the actual temperature of an ice bath within one second Reading times in other foods may vary slightly Do not immerse the probe all the way ...

Page 2: ...tion 180 for 2 way rotation horizontal only or choose to lock the display in a specific orientation when Loc is displayed Press MENU to store the rotation setting Auto Off Sleep Mode Press the MENU button until SLEEP is shown at the top of the display Press the SET button to step through the sleep interval settings from 10 seconds to 180 seconds in 10 second intervals or to turn the sleep function...

Page 3: ...nutes The probe should not be rotated while the body is submerged or under a stream of water Protect the plastic body from high temperatures DO NOT LEAVE THE THERMAPEN ONE IN AN OVEN OR ON A HOT SURFACE Not dishwasher safe Warning IPA and other solvents may cause damage to the case and screen of this instrument Error Messages Lo is displayed if measurements are being made below the instrument rang...

Page 4: ...ull five year warranty against defects in either components or workmanship During this period any Thermapen ONE that proves to be defective will at the discretion of ThermoWorks be either repaired or replaced without charge Full details of liability are available within ThermoWorks Terms Conditions of Sale at www thermoworks com product warranty Thermapen ONE Accessories available at www thermowor...

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