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The TPI 343 is a Dual Input K-Type Thermocouple Thermometer with Field Calibration and a -58 to 2,462 °F (-50 to 1,350°C) temperature range.

  • Auto Field Calibrate in less than 10 seconds in ice water to achieve +/- 1°F system (tester & probe) accuracy within 30°F to 120°F temperature range
  • Temp1, Temp2, Temp1-Temp2 display modes
  • Min / Max Record
  • Auto Resolution (0.1° / 1°)
  • C/°F Selectable
  • Hold feature freezes reading on display
  • Auto Off
  • Protective rubber boot
  • Easy to read LCD display

Where to Buy TPI Products

343 Standard Accessories:

  • V Battery A009
  • Temperature Probe (2 each) GK13M
  • Protective Boot A303
  • Soft Pouch A255
  • Instruction manual

See Kit Options for additional Flow & Return and Legionnaires Temperature kit variations

SEALS4usUL

HVAC/R

  • Ambient Air
  • Calibrate Thermostats
  • Compressor Heads
  • Registers
  • Temperature Differential
  • Vents

FOOD

  • Grill & Surface Temperatures

ELECTRICAL

  • Cables
  • Circuit Breakers
  • Connections
  • Machinery
  • Motors & Transformers
 Model 343 Specifications
Input Dual K-type Thermocouple
Temperature Range 0.1°C/°F : up to 999.9°C/°F
1.0°C/°F : above 1,000°C/F
Display 0.1°C/°F : up to 999.9°C/°F
1.0°C/°F : above 1,000°C/F
Accuracy ±3°F(±1.6°C) from:
-58°F to 32°F (-50°C to 0°C)±0.3% of rdg +1.8°F (1°C) from:
32°F to 1,100°F (0°C to 600°C)±0.4% of rdg +1.8°F (1°C) from:
1,100°F to 2,462°F (600°C to 1,350°C)
Update Rate 2.5 times/second
Key Buttons On/Off, T1, T2, T1-T2, °C, °F, HOLD
Field Calibration By key operation
Operating Temperature 32°F to 122°F (0°C to 50°C)
Storage Temperature -13°F to 158°F (-25°C to 70°C)
Battery 9V
Battery Life 200 hours (Alkaline)

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