ThermoProbe Inc.

Model TL2-A - Precision Benchtop Laboratory Reference Thermometer

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The TL2-A is a versatile 2-channel precision bench top thermometer offering a convenient USB interface for data logging and sensor configuration. The TL2-A is two thermometers in one instrument, with two channels allowing simultaneous temperature measurement in different locations. The TL2-A is well suited for establishing temperature traceability in equipment that requires high accuracy. The TL2-A is also perfect for metrology applications and as a calibration reference thermometer.

The TL2-A can be ordered with sensors included or the user can provide their own sensors. Sensor coefficients can be entered from a PC making it easy to change from a daily use RTD to a SPRT including user selectable choice of ITS-90 or Callandar-Van Dusen equations. Units come with 5 point resistance calibration from 20 to 425 ohms. With available PRT(s) ThermoProbe can provide a temperature reference system. Standard sensors are 100Ω wire-wound platinum RTDs in a stainless steel ¼” sheath 13” long. The sensors are provided with a standard 5 foot cable and DIN plug. Custom configurations and temperature ranges are available upon request.

The intuitive user interface allows easy configuration of temperature units, display resolution and a relay output. Minimum, maximum and average temperatures are automatically stored to memory for later reference. The interface allows viewing of Highest, Lowest and Average Readings, Zero Offset adjustment for sensor drift and readings in C, F, K and Ohms. The versatile data logging feature can be used to send data to a PC or stored to a USB Flash drive.

The TL2-A is constructed from rugged powder-coated steel and aluminum. The large backlit display is easy to read from a distance. With the provided AC power supply, the TL2-A is ideal for bench top or laboratory applications.  A one year warranty, calibration report, USB cable, Flash drive, interface software and country specific power adaptor are included.

Laboratory, Temperature, Calibration, Reference, Metrology, NIST, Traceable, Certified, API, ASTM, Thermowell, Temperature bath, Distillation, Melting point test, Flash point test, Pour point test, Prover, Pharmaceutical, Food, Dairy, Digital, Temperature Calibrator, Precision

Display    
Large 0.5″ ( 1.3cm) character LCD with backlight
Switchable units °C ,°F,°K or Ω
Resolution 0.01 , 0.001 or 0.0001 for Ohms

User Functions    
Switchable units °C ,°F,°K or Ω
Resolution 0.01 , 0.001 or 0.0001 for Ohms
Zero Offset adjustment
Temperature triggered SPDT relay output (Channel 1)
Stores and displays Average, Lowest & Highest readings.
Arrows indicating increasing/decreasing temperature.

PC & Data Logging Features    
Data capture to USB Flash drive saved in CSV format (comma delimited)
Data capture to PC via HyperTerminal
Selectable logging intervals and polling mode
2-Channel Sensor coefficient entry

Construction    
Rugged powder coated steel enclosure with silicone buttons and a durable polyester graphics window.
Nominal Body Dimensions: 7.25 x 5.25 x 2.25″ (18.4 x 13.3 x 5.7cm)
Nominal Weight: 1lb. 10oz (0.74kg)

Resistance    
Standard 5 Point Calibration:
Resistance Accuracy
20Ω +/-0.002°C
100Ω +/-0.007°C
190Ω +/-0.015°C
265Ω +/-0.021°C
425Ω +/-0.032°C

Temperature    
Resolution: 0.001 Degrees
Range: -328°F to 1764°F (-200°C to 962°C)
-depending on sensor selection
ITS-90 or Callandar-Van Dusen Linearization equations
Factory Calibration of TL2-A & PRT system available for
-4°F to 572°F (-20°C to 300°C) range
Standard Calibrated Accuracy:
±0.06°F from -30 to 320°F
±0.03°C from -36 to 160°C
Custom calibration points and ranges available
NIST Traceable Report of Test

Sensor/Probe    
Accepts 100Ω and 200Ω RTD, PRT or SPRT
4 wire with shield, 5 pin male DIN connector
Standard sensors:

  • 100Ω wire-wound platinum RTD
  • Stainless steel ¼” sheath 13” long.
  • Provided with a standard 5 foot cable and DIN plug.
  • Custom configurations available upon request.
  • Immersion depth 4″ (11cm) recommended

Power    

90 ~ 264 VAC External power adapter
Country specific adapters available upon request

Calibration    
NIST Traceable Resistance and Temperature

Notes    
Specifications subject to change, see data sheet for latest information.
Custom ranges and configurations available upon request.

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