The THVF meter M-010 is intended for monitoring of laboratory reference conditions. The device measures temperature, humidity, power line voltage and frequency. It can periodically record all these data. The stored data can be whenever transferred to the computer through the serial port RS-232. The recording of maximum and minimum values eventually the observing of the set limits of separate measured values belongs to the other device functions. In case of set limit overloading the audible alarm is activated. The THVF meter can be used independently, or as a part of fully automated calibration workplaces.
The instrument is supplied from power line and it is backup with non-maintenance accumulator. The instrument is capable to work without external power supply minimally 10 hours (the requirement is to be previously connected to the power supply at least 48 hours with no interruption). When operating with accumulator the THVF meter display is darkened and it is lighting for 20 seconds after the key press. The back up mode is indicated by flashing ' – ' on CLOCK display. The measured values are stored in RAM memory backed up with a lithium battery.
