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

TL1-R

Precision Intrinsically Safe Portable Stem Thermometer for Laboratory and Field Reference

Description

The TL1-R is an intrinsically safe precision thermometer designed for use in hazardous locations. The TL1-R is a compact reference with accuracy comparable to instruments costing twice as much. The TL1-R is well suited for establishing temperature traceability in equipment that requires high accuracy. The TL1-R is also perfect for metrology applications and as a calibration reference thermometer. It is an extremely accurate portable hand held instrument that is ideally suited for field applications and indoor laboratory uses. There is no other digital thermometer with this accuracy in such a small package.

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.

The TL1-R is constructed with a robust aluminum case and stainless steel temperature probe. Different from most electronic thermometers, the “Cordless” TL1-R has no wires to get in the way or break. The sealed overlay switch interface makes for intuitive operation. Standard probe lengths are 8 and 12 inches with additional lengths available upon request. The TL1-R comes equipped with easily replaceable AAA batteries, providing up to 200 hours of operation.

Certifications

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

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 0.01 or 0.001

User Functions

Auto Off after 20 minutes or continuous operation
Lowest Reading, Highest Reading, Average Reading
Switchable in Units of °F or °C
Display hundredths or thousandths 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

4.6oz (130grams)
– with 8″ sensor

Temperature

Resolution 0.001 Degrees
Calibrated Accuracy:
±0.06°F from -30 to 320°F
±0.03°C from -36 to 160°C
Range: -40°F to 400°F (-40°C to 204°C)
NIST Traceable Report of Test

Temperature Time Constant

19 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
– 200Ω Precision wire wound platinum RTD
– Standard 8"(20cm) or 12"(30cm) lengths
– Standard 0.25"(6.35mm) diameter
– Immersion depth 4" (11cm) recommended

Batteries

2 AAA Duracell MN2400
Over 200 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.