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343 Kit 3 PLUS – Legionnaires Temp Plus Kit (as 343) c/w 1 x FK11M & 1 x CK11M & 1 x CK21M in A901 CarryCase


343/Kit 3 Legionnaires Temperature Kit

In stock


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 temperature
  • 1 x CK21M Temperature Pipe Clamp
    • Use for pipework temperatures
  • 2 x GK11M 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.

343 Features:

  • 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



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


 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)
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