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TPI 343 Dual Input K-Type Thermocouple Thermometer with Field Calibration:  -50 to 1350 °C (-58 to 2,462 °F) range.

343 Dual Input K-Type Thermocouple Thermometer with Field Calibration
  • 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

£60.00 RRP exc. VAT 

Standard: See Kit Options below for additional pricing details


343 Standard Accessories:

  • V Battery A009
  • Temperature Probe (2 each) GK11M
  • Protective Boot A303
  • Soft Pouch A255
  • Instruction manual

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

343 Applications:

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

• Grill & Surface Temperatures

• Cables
• Circuit Breakers
• Connections
• Machinery
• Motors & Transformers

 Model 343 Specifications
 Input Dual K-type thermocouple
 Temperature Range -50°C to 1,350°C (-58°F to 2,462°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)

343/Kit 1 Flow & Return Digital Thermometer Kit

343 Kit 1
343 Kit 1

This kit come complete with all the great features of the 343 PLUS:

  • 2 x CK21M Temperature Pipe
    Clamps – Ideal for performing FLOW & RETURN measurements
  • 2 x GK11M Air Temperature Probes – Check air temperatures in rooms, inlets & vents etc.
  • 1 x A901 Soft Carry Case – Perfect for keeping your kit in one place, neat and tidy.

Kitted together to perform FLOW & RETURN tests.

£90.00 RRP exc. VAT 

343/Kit 3 Legionnaires Temperature Kit

343 Kit 3

This kit come complete with all the great features of the 343 PLUS:

  • 1 x 343 Dual Input Differential Thermometer:
    ~ Toggle between T1, T2 & Diff. Temperatures
    ~ – 50 to 1,350 °C Temperature Range
    ~ 0. 1 or 1 °C Auto Resolution
    ~ Auto Field Calibrate in less than 10 secs
    ~ Data Hold & Min/Max Features
  • 1 x FK11M Immersion Probe
    ~ Use to check water temperatures
  • 1 x CK11M Surface Probe
    ~ Use to check tank surface temperatures
  • 2 x GK21M Air (Beaded) Probes
    ~ Check ambient room or vent measurements
  • 1 x A901 Soft Carry Case – Perfect for keeping your kit in one place, neat and tidy.

£115.00 RRP exc. VAT 

TPI Model 343 Demonstration Video

Product Documentationpdf-icon1

Click below to view or download product documentation PDFs:

343 Manual

343C2 Data Sheet

343 Data Sheet

343C3 Data Sheet

343C1 Data Sheet

343 Field Calibration Instructions

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