Digital Thermometer TL2-A ThermoProbe
Product Description
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.
Applications
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
Technical Specifications
Temp. Measurement	2 Channel temperature measurement
	Standard 5-pin DIN connector
	200Ω 4-wire sensor probe
	Standard system calibrated range of -20 to 150 °C ( -4 to 300 °F )
	Linearization by Callendar-Van Dusen*
	Factory calibrations yield a tolerance of ±0. 03 °C ( ±0. 05 °F ) ( @ 23 °C ambient temp.)
	Temperature time constant : 19 sec.
	NIST traceable report of test
User Interface	Large 13 mm ( 0.5" ), 6-digit LCD display with backlight
	Selectable 0.01 or 0.001 display resolution
	F ( Fahrenheit ), C ( Celsius ), K ( Kelvin ), or Ω ( Ohms ) selectable display output
	Easy viewing of Highest, Lowest, and Average Readings
	Easy Zero Offset adjustment for sensor drift
	Programmable SPDT relay output ( 3 Amp maximum )
Construction	Rugged, powder coated, steel enclosure 184 mm x 133 mm x 57 mm ( 7.25" x 5.25" x 2.25" )
	Standard 1.5 m ( 5' ) cable
	316 L stainless steel sensor design 6 mm ( ¼" ) diameter
	Highly durable display window, graphics, and silicone keypad
	0.74 kg ( 1 lb, 10 oz ) without temperature sensor & power cord
Electronics	Microcontroller and precision 20-bit A/D converter. Recommended Ambient Temperature Range for Best Accuracy is 0 to 44 °C ( 32 to 112 °F )
Data Logging	Internal real-time clock reference
	PC interface via USB ( type A ) for direct data capture using Windows OS HyperTerminal function
	Stand alone data capture to a dedicated USB ( type B ) flash drive interface, saved in comma delimited format
	0.001 logging display resolution
	Selectable logging intervals : 1, 10, or 30 seconds, 1 minute, 1 hour, or when queried
Included	Wall mount AC power adapter
	USB type 'A' to PC cable included
Optional Features	High range sensors ( up to 288 °C , 550 °F )
	100 Ω sensors
	ITS-90 Calibration
	Country specific AC power supply