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Brand: T&D
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TR-81 has been designed to be used with any three-wired platinum resistance type (Pt100-type or JPt 100-type) sensor. The measuring range with a Pt-100 sensor is between -200°C and 600°C and it is possible to attach and measure with two sensors. Moreover, we can tailor the sensor's protection pipe length, protection pipe diameter and cable length to suit your needs.

Measurement Channels 2 Ch (Temperature)
Measurement Range -200 to 600°C
Accuracy ±0.3°C (-200 to 80°C) / ±0.5°C (80 to 450°C) / ±1.0°C (80 to 600°C)
Resolution 0.1°C
Adaptable sensor Pt100 with 3 wires
Measuring current 1mA
Recording Intervals 1,2,5,10,15,20,30 sec./ 1,2,5,10,15,20,30,60 min./ Total 15 choices
Logging Capacity 8,000 data sets (One data set consists of readings for all channels in that type of unit.)
Recording Method Endless Method (Overwrite from the oldest data when the capacity is full)
One time Method (Stop recording when the capacity is full)
LCD Display Current Temperature, Recording Indicator, Battery Life Warning, Data Amount, Unit of Temperature, Communication Indicator, Sensor Type, Recording Methods
Battery Lithium Battery (CR-2) X 1
Battery Life Approx. 5 to 8 months
(Battery life differs depending on measurement environment and battery performance. Changing battery is possible even during recording.)
Data Back-up Activated if: Low Battery Power / Switched OFF
Interface Serial Communication (RS-232C)
Communication Speed Download at 9,600 bps (50 sec./per Unit when data is full)
Demensions H123mm X W58mm X D33mm excluding protrusions
Weight Approx.132g (Including 1 Lithium Battery)
Temperature and Humidity Durability of the Unit Temperature: -10 to 60°C
Humidity: Less than 90%RH (Without dew condensation)





1.LCD Display
3.Power Switch
4.REC/STOP Button
5.Area to affix Attachment Plate
6.Battery Cover
7.Sensor Connection Terminal
8.Communication Cable Jack

Application Examples

* Recording temperature during food preparation including cooking pots and fryers
* Temperature management in ultra low temperature freezers
* Temperature management of blood tranportation
* Temperature management of compost
* Recording temperature of boiler pipes 



Possible to Measure and Record from-200 to 600°C

TR-81 has been designed for use with any three-wired Pt 100-type sensor. Can be easily attached to already fixed sensors. Wide range of uses from personal to business.

Improved Sensor Durability

If the attached sensor becomes wet for a short time, it can still be used again by drying it quickly at room temperature.

If a not sufficiently dried sensor becomes wet again even for a short time, the sensor life may be adversely affected. 

1 Unit has 2 Measuring and Recording Channels

Depending on your recording needs you can choose from one of 15 different recording intervals (1 second to 1 hour). There are also two methods of recording: One-time method: Recording stops when recorded data readings reach 8,000. Endless method: When recorded readings reach 8,000 the oldest data is overwritten and recording continues.

Large Logging Capacity

A TR-81 is capable of recording up to 8,000 data sets. (One data set consists of readings for all channels in that type of unit.) At a recording interval of 1 hour that gives you about one year of continual recording. It is possible to change batteries in the middle of a long-term recording and not lose data.

5-8 Month Continual Recording on 1 Battery

Using our specially designed low energy consumption circuit this unit can run on one Lithium battery for five to eight months of continued use. No need to worry about where you place it, as the battery will allow you to measure and record over long periods of time whether the unit is in transit or in a distant place.

Battery life will depend on the recording environment, recording interval, communication frequency, and ambient temperature. The above battery life test was carried out using brand new batteries and in no way do we guarantee a battery's life.

Reliable Backup Function

We have eliminated the worry of losing data due to a loss of power.

Easy-to-Read Multi-Functional Display

The easy-to-read large sized LCD displays current readings, recording condition, battery life warning, amount of data readings, and unit of measurement among other thing.

1.Displays Data Measurement for Channnel 1.
2.Displays Data Measurement for Channnel 2.
3.Recording Indicator.
4.Amount of Recorded Data.
5.Indicates communication in progress.
6.Battery Life Warning.
7.Temperature Unit Display.
8.Recording Mode
ENDLESS: When the recorded data goes over 8000 units the oldest data is overwritten and recording continues.
ONETIME: When the recorded data reaches 8000 units the REC indicator goes off and recording stops.
9.Sensor Type (Pt100)