This product is no longer available and has been replaced by: 105E-L. Some accessories, replacement parts, or services may still be available.
105T-L Type T Thermocouple Probe


The 105T Type T thermocouple consisted of 24-gage, shielded, copper wire and constantan wire. The copper wire and constantan wire were joined at a measurement junction that was electrically isolated from the soil (or other media). Electrical isolation avoided measurement errors due to differences in ground potential.

The "-L" on a product model indicates that the cable length is specified at the time of order.



105T-L Compatibility Information

The 105T is measured by the TCDiff instruction in CRBasic and by Instruction 14 (Differential Thermocouple) in Edlog. One differential channel per probe is required; a thermocouple reference junction at the datalogger is also required. If large numbers of 105Ts are to be measured, the AM25T Thermocouple Multiplexer is recommended. The CR200-series, CR500, and CR510 dataloggers do not have thermocouple measurement instructions and are therefore not compatible with the 105T.

105T-L Compatibility by Datalogger

CR200 Series CR800/CR850 CR1000 CR3000 CR9000X

105T-L Compatibility by Retired Datalogger

CR500 CR510 CR10 CR10X 21X CR23X CR9000 CR5000 CR7X

Frequently Asked Questions

Number of FAQs related to 105T-L: 2

  1. The information included on a calibration sheet differs with each sensor. For some sensors, the sheet contains coefficients necessary to program a datalogger. For other sensors, the calibration sheet is a pass/fail report.

  2. This depends on the information contained in the calibration sheet:

    • If the calibration sheet contains coefficient information, Campbell Scientific keeps a copy, and a replacement copy can be requested.
    • If the calibration sheet does not contain coefficients, Campbell Scientific does not keep a copy. It may be possible to contact the original manufacturer for a replacement copy.