Lutron CD4307SD

One meter for multi purpose operation: Conductivity, TDS ( Total dissolved solids ), Salt measurement. 

Features: 

• Conductivity: 200 uS/2 mS/20 mS/200 mS. 
• Salt: 0 to 12 % salt ( % weight ). 
• Conductivity measurement can select Temp. Coefficient of measurement solution. 
• ATC for the conductivity measurement. 
• Separate probe, easy for operation of different measurement environment. 
• Real time SD memory card datalogger, built-in clock and calendar, sampling time can set from 1 sec to 8 hour 59 min. 59 sec. 
• Manual datalogger is available, during execute the manual datalogger function, it can set the different location no. (position 1 to position 99). 
• Innovation and easy operation, no need to setup extra software. After executing datalogger, simply remove the SD card from the meter and plug in the SD card into the computer to download the measured values with the time information ( year/month/date/ hour/minute/second ) directly to Excel, then user can make further data or graphic analysis by themselves. 
• SD card capacity : 1 GB to 16 GB. 
• LCD with green light backlight, easy reading. 
• It can default auto power off or manual power off. 
• Data hold, record max. and min. reading. 
• Microcomputer circuit, high accuracy. 
• Power by UM3/AA ( 1.5 V ) x 6 batteries or DC 9V adapter. 
• RS232/USB PC COMPUTER interface. 
• Wide applications: water conditioning, aquariums, beverage, fish hatcheries, food processing, photography, laboratory, paper industry, plating industry, quality control, school & college, water conditioning.