Features 1、Online monitor can monitor electrical conductivity at any time, more convenient. 2、Compact size, lightweight and portable with LCD display for clear and easy reading. 3、It has automatic temperature compensation function. 4、The meter with accurate measurement, stable running and maintenance-free, so it It's an ideal auxiliary instrument of various types of small pure water equipment. 5、Made of high quality ABS material, wear-resisting, strong and durable. 6、This series of instruments are industrial on-line instruments for measuring and controling conductivty. 7、It applies widely to the measurement and control of pure water in the fields of pharmacy, chemical industry, electronic industry, food industry and beverage industry. Specification Condition: 100% Brand New Item Type: Conductivity Monitor Model: WS-C51 Material: ABS Color: Black Weight: Approx.622g/21.9oz Measuring Range: 0~20ms Display Mode: LCD Accuracy: 1.5% (FS) Stability: ±2X10-3(FS)/24h Working Pressure: 0~0.5MPa Medium's Temperature: 0-50 ℃ Temperature Compensation: Taking 25℃ as the datum point,digital temp.compensation. Insulated Active Output: 4-20mA (≤500Ω) Control Output: Maximum and minimum (constantly open) Contact Output: Capacity of Contact Points: 3A / AC250V (with resistant loads) Length of the Cable: 4.5m/14.8ft or otherwise agreed Environmental Conditions: Temperature: 0-50℃ Humidity: ≤85% RH Dimensions: Approx.48x96x100mm / 1.9x3.8x3.9in(Height x Width x Depth) The Hole on the Dial Plate: Approx.45x92mm / 1.8x3.6in The Way of Installation: Install with a disk Package List 1 x Conductivity Monitor 1 x Instruction Manual 1 x Probe