ES-642 IN LONDON The popular ES-642 Optical Sensor is housed in a weatherproof case and used to continuously monitor, detect, and measure particulate concentration. It comes standard with an inlet for TSP measurement. Unit does not include any logging or power source. The screen displays Conc, Temp, Baro, and Flow rate. The serial output only shows concentration and error code if one exists. The analog output gives a voltage representation of concentration. The ES-642 is a moderately priced, high quality monitor developed along with our line of PM monitors and samplers. It can be combined with Met One Instruments' weather sensors. Our CPM modem can be used to send information to your website or program via the Cloud. Outputs: Serial MODBUS, Serial ASCII Text, RS-232, RS-485, 0-10V Analog, and 4-20mA Analog INCLUDES: TSP INLET, MULTI-SIGNAL CABLE, INSTRUCTION MANUAL, 3/16" ALLEN WRENCH, WALL MOUNTING BRACKET / HARDWARE OPTIONS: FOR PM10 A...