The TR-77Ui is our innovative temperature and humidity data logger designed to measure and record in a wider range with more precision than ever before. It reaches the high measurement accuracy of ±2.5%RH and can measure and record in the range of 0 to 99%RH (at temperatures from -30 to 80°C).

The product is an all-in-one package that includes the data logger unit, sensor and software. Simply by connecting to a PC via a USB connection and carrying out a few easy steps, the measurement and recording of data can be started.

Not only can recorded data be easily downloaded to a PC via USB communication, but it can also be collected from data loggers via infrared communication to our T&D Data Collector TR-57DCi (sold separately). The TR-57DCi enables the user to gather and check recorded data on the spot without having to manually gather the data loggers.

Measure and Record Temperature and Humidity in a Wider Range with Greater Accuracy

T&D's innovative technology provides higher precision measurements of temperature and humidity within an even wider range than ever before.

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.

Extend Sensor Cable up to 10 Meters

By using the optional extension cables(*) it is possible to place the sensor up to 10 meters away from the TR-77Ui Unit.

*) Each TR-1C30 cable can extend the sensor by three meters. It is necessary to connect three TR-1C30 cables to extend the sensor up to ten meters.

Easy-to-Use USB Computer Connection

USB cable connection makes it a snap to connect a TR-77Ui Unit to your computer.
For computers with more than one USB port, it is possible to connect multiple TR-77Ui Units to one computer at the same time.

Large Logging Capacity: 8,000 Data Sets

One data set consists of readings for both temperature and humidity.
At the longest recording interval of 60 minutes, recording can continue for 1 year.

The battery life for a TR-77Ui Unit is about 10 months. In order to record measurements consecutively for 1 year, the battery should be periodically changed.
Battery life varies depending upon the type of battery, the battery performance, the measuring environment, and the frequency of communication.

Simultaneously View Multiple Channels of Data in Trend Graph

With our exclusive software, it is possible not only to monitor the current measurements, but also to view those measurements in a continually changing graph on your computer display at the same time.
Graphs can be opened for the same number of Units as are connected and can be viewed simultaneously.

Adjustment Function Equipped

By entering the adjustment values beforehand, it is possible to view and record the adjusted measurement values.

Adjustment values are written directly into the sensors themselves, not into the Units. Therefore, when replacing a sensor, it is necessary to re-set any desired adjustment settings into the newly connected sensor.

Slim, Lightweight and Compact

Our exclusive technology has allowed T&D to design and manufacture a high performance yet affordable and compact Unit (55 x 78 x 18mm, 62g).

The front of the Unit, which is smaller than a credit card, is compact yet easy-to-read.

10 Months of Operation with just 1 AA Alkaline Battery

Our special low energy consumption design gives you ten months of continuous operation with only one AA alkaline battery.

As the battery allows for measurement and recording over long periods of time there is no need to worry about where you place it; whether it is in transit or in a distant place.

Battery life varies depending upon the type of battery, the battery performance, the measuring environment, and the frequency of communication. The stated specifications are based on operations carried out with a new battery and are in no way a guarantee of your actual battery life.

Specifications

*1) When used at temperatures equal to or higher than 0°C, the Humidity Measuring Accuracy will be as shown here.
*2) When used at temperature / humidity equal to or lower than the following: 50°C/75%RH, 60°C/50%RH, 70°C/35%RH, 80°C/25%RH
*3) One data set consists of readings for all channels in that type of unit.
*4) Battery life varies depending upon the type of battery, the measuring environment, the frequency of communication, and the ambient temperature in which it is used.When infrared communication function is enabled, battery life may be shortened if the unit is used under the inverter type fluorescent lighting.
*5) If necessary, serial communication can be established by using our TR-77Ui communication protocol (contact your local dealer) to write a software program. In this case, it will be necessary to connect to your computer using our optional serial communication cable (TR-07C). Please contact the dealer where the product was purchased or the T&D Sales Department.