T and D has introduced the TR-77Ui data logger, a versatile unit that features a wide range from 0-99 per cent relative humidity along with an expanded temperature range from -30C to +80C.
The compact and lightweight unit measures approximately 2 x 3in and operates on one AA battery.
The relative humidity accuracy is +/-2.5 per cent uncalibrated, and provides a fast response of 20s humidity time constant.
The probe has a 1m cable that can be increased up to 10m from the logger with optional extensions.
The TR-77Ui has a large data capacity, storing up to 8,000 readings per channel (two channels) for a total of 16,000 readings in one-time or endless-recording mode.
By connecting to a computer via a USB port, the recorded data can be quickly downloaded with the easy-to-use software.
The TR-77Ui also features an Irda port for wireless downloading of data.
The built-in adjustment function allows the user to enter calibration factors directly into the logger, eliminating the need to adjust readings after they are downloaded.