Cart 0
TL1W Series High Accuracy Stem Thermometer - Tech Instrumentation

TL1W Series High Accuracy Stem Thermometer

No reviews
  • $607.12

The TL1-W intrinsically safe thermometer is a modified field version of our successful TL1-A thermometer. It features a rugged frame for reinforcement and is designed for continuous operation, but can be easily powered off if desired.

The TL1-W thermometer is intended to be used anywhere a precision glass stem thermometer or other type thermometer may be used. The TL-1W incorporates glass thermometer simplicity and reliability with the ease of a digital display. Like precision mercury thermometers, the TL1-W has accuracy, repeatability and long-term stability. But unlike those thermometers there will never be problems with mercury separation or hazardous material cleanup. Different from most precision electronic thermometers, the "cordless" TL1-W has no wires to get in the way or break. Battery replacement is easily done through a sealed cover. Encoded calibration is unaffected by temperature, vibration or battery removal. Low battery display, and failure mode indications protect the user from false data.

4 Point NIST Traceable Calibration and a one year warranty included.

* Option Stem Lengths are special order and normally require about 2 weeks to ship.

US EPA Phase-Out of Mercury Thermometers Used in Industrial and Laboratory Settings

NIST GMP 11 - Good Measurement Practice for Assignment and Adjustment of Calibration Intervals for Laboratory Standards

TL1W Series High Accuracy Stem Thermometer Buttons


  • Minimum reading
  • Maximum reading
  • Averaging
  • Easy °F to °C switching
  • Backlight
  • Sturdy frame
  • Display arrows indicate increasing or decreasing temperature

* Options are custom and require additional lead time.



LCD with 0.25 inch characters
Trend Indicating Arrows
Low Battery & Fault indication

User Functions:

Auto-off after 20 minutes or continuous operation
Lowest Reading, Highest Reading, Average Reading
Switchable in Units of °F or °C
Display tenths or hundredths resolution


Stainless steel temperature sensor; Standard Sensor length 8" (20cm)
Standard diameter 1/4" (6.35mm) with reduced diameter tip of 3/16" (4.76mm)
Sturdy Acetyl frame surrounding aluminum enclosure
Electronics and display in 3.5" x 1.2" anodized Aluminum enclosure
Molded Silicone seal.
Highly durable display window, graphics and membrane switches.


6.5 ounces, 180 grams


Resolution 0.01 Degrees
Calibrated Accuracy:
±0.1 °F from 14 to 320 °F
±0.06 °C from -10 to 160 °C
NIST Traceable Report of Test

Temperature Time Constant:

8 seconds in circulated water bath
(63.2% response to temperature change)


Ultra Low Power Micro-controller
FLASH Memory
20 bit A/D Converter
Recommended Ambient Temperature Range for Best Accuracy 32 ° to 112 °F, 0 ° to 44 °C


100 Ohm, Class A 1/3 DIN RTD
Immersion depth 4", 11cm


2 AAA Duracell MX2400
Battery Life several hundred hours depending on backlight usage
Battery Operating Range -4 to 130 °F, -20 to 54 °C
Note: Battery may not provide adequate power if ambient temperature is below -4 °F, -20 °C or above 130 °F, 54 °C

Specifications subject to change

Typical Applications

Distillations, temperature baths, melting point tests, flash point tests, reference, thermowells, provers, temperature calibration for flow meters.




Due to the special certification on these meters, please allow approximately 7 to 10 days to ship. Includes certificate of calibration at the following approximate points: 32, 120, 199 (200) and 300 degrees.

Please call us if you have any questions. 800-390-0004 ..... Free Shipping on most orders over $100 .....