Intrinsically Safe Digital Thermometers for Hazardous Locations since 1983.
Designed and Made in the USA

TL1-A

Intrinsically Safe Portable Stem Thermometer for Laboratory and Field Reference


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Description

The TL1-A is an intrinsically safe digital laboratory thermometer designed for use in hazardous locations. The TL1-A is an improved version of the original ThermoProbe model TL1. The TL1-A is intended to be used anywhere a precision glass stem thermometer or other type thermometer is used. The TL1-A incorporates glass thermometer simplicity and reliability with the convenience of a digital display. Like precision mercury thermometers, the TL1-A has accuracy, repeatability and long-term stability. But unlike those thermometers there will never be problems with mercury separation or hazardous material cleanup. The TL1-A is commonly used as a calibration reference for field temperature instruments such as gauging thermometers and flow meters. With a history of proven accuracy, The TL1-A has become a standard for temperature in multiple industries.

The versatile software functions allow easy selection of Celsius or Fahrenheit units and display resolution. Encoded calibration is unaffected by temperature, vibration, or battery removal. Low battery display, and failure mode indications protect the user from false data. The intuitive display indicators allow the user to establish accurate temperature readings. Minimum, maximum and average temperatures are automatically stored to memory for later reference.

diagramTL1A

The TL1-A is constructed with a robust aluminum case and stainless steel temperature probe. Different from most electronic thermometers, the “Cordless” TL1-A has no wires to get in the way or break. The sealed overlay switch interface makes for intuitive operation. The TL1-A comes equipped with an easily replaceable coin cell battery, providing up to 100 hours of operation.

 

Certifications

The TL1-A certifications are recognized in Europe (ATEX) and internationally (IECEx).

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

Applications

Hazardous location, Intrinsically Safe, Laboratory, Temperature, Calibration, Reference, Petroleum, Pipeline, Thermo well, Thermowell, Handheld, Metrology, NIST, Traceable, Certified, API, ASTM, Temperature bath, Dry block, Dry well, Distillation, Melting point test, Flash point test, Prover, Flow meter, Pharmaceutical, Food, Dairy, Pete’s Plug, Viscosity, Portable, Digital, Inspector, Temperature Calibrator, Precision, Ex, UL, ATEX, IECEx.

 

 

 

Display

LCD with 0.25 inch characters
Trend Indicating Arrows
Low Battery & Fault indication
Resolution 0.1 or 0.01

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

Certification

ATEX & IECEx (Ex ib IIC T4)

Construction

Sensor mount acetyl plastic
Electronics and display in 3.5" x 1.2" anodized Aluminum enclosure
Molded Silicone seal.
Highly durable display window, graphics and membrane switches.

Weight

3.35oz (95grams)
– with 8" sensor

Temperature

Resolution 0.01 Degrees
Calibrated Accuracy:
±0.1°F from 14 to 320°F
±0.06°C from -10 to 160°C
Range: -40°F to 400°F (-40°C to 204°C)
NIST Traceable Report of Test

Temperature Time Constant

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

Electronics

Microcontroller and precision 20 bit A/D Converter
FLASH memory
Recommended Temperature Range For best Accuracy 32 to 112°F, 0 to 44°C

Sensor

Stainless Steel RTD temperature sensor
– 100Ω Shock resistant Thin Film RTD
– Standard 8"(20cm) or 12"(30cm) lengths
– Standard 0.25"(6.35mm) diameter with 0.188" (4.76mm) reduced tip
– Immersion depth 4" (11cm) recommended

Batteries

20mm Coin Size 3V Lithium, Duracell DL2032(IEC CR2032)
Over 100 hours Service Life at 70°F, 21°C
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

Notes

Specifications subject to change, See data sheet for latest information.
Custom ranges, configurations and sensor lengths available upon request.