â·ÃÊͺ¶ÒÁÃÒ¤Ò Thermometer 2 channels with certificate of calibration. Product by UK. Therma Differential Thermometer Thermometer 2 channels Thermometer 2 channels with certificate of calibration. Product by UK. The NEW Therma Differential digital thermometer allows the user to use two type K thermocouple probes simultaneously. The display can be switched to show probe T1 or T2 temperature or the difference between probes T1 and T2 (T1-T2). This allows, for example, the temperature drop across radiators or the temperature rise or fall of two items to be measured. The Therma Differential measures temperature over the range of -100 to 299.9 °C with a 0.1 °C resolution or 300 to 1372 °C with a 1 °C resolution. The thermometer features a custom, LCD display with °C, T1, T2, diff, hold, open circuit, low battery indication and an optional backlight. The unit incorporates an auto-power off facility that automatically turns the instrument off after approximately ten minutes, maximising battery life. Each thermometer is housed in a durable, ABS case that has an integrated rubber seal to ensure complete water tightness and help reduce the possibility of damage in harsh environments. The Therma Differential is priced excluding probe. ETI offers an extensive range of interchangeable type K thermocouple probes, for a variety of different applications, click here for full range. specification Therma Differential thermometer range -100 to 1372°C resolution 0.1 °C to 299.9°C thereafter 1°C accuracy ±0.4 °C ±1 % of reading battery 3 x 1.5 volt AAA battery life 7500 hours sensor type K thermocouple display 15mm LCD dimensions 32 x 71 x 141mm weight 220 grams µéͧ«×éÍ probe à¾ÔèÁàªè¹ WRNM-106 ETI ETI 231-022 Temperature Thermometer à¤Ã×èͧÇÑ´ÍسËÀÙÁÔ áºº¾¡¾Ò