Apera Instruments 2301T-S Conductivity/Temp. Electrode adopts Apera's unique BPB (Brush-resistant Platinum Black) conductivity sensor technology, which ensures high accuracy in a wide range of conductivity measurement. The built-in thermistor tests temperature simultaneously and allows for auto temperature compensation. It is ideal for both regular laboratory and in-field use. Measuring Range: 0. 5 µS/cm to 200 mS/cm; Electrode Constant: K=1. 0 0. 2cm^-1; Temperature unit: 30KΩ Thermistor; Dimension: ø12*155mm; Housing: Polycarbonate; Connector: BNC/RCA; Cable: 3 Ft Compatible Apera Models: SX823-B, EC400, PC400, EC400S, PC400S