Features: * Large-screen LCD displays voltage, current, power and timing time at the same time. * Voltage, current and power closed-loop control, realizing adjustment during operation. * With call recovery function. * After reaching the set time, it has the function of maintaining small current. * Perfect protection and early warning functions. * With memory storage function. * One machine with multiple slots, four parallel outputs.

Multi-parameter Water Quality Meter Up to 5 points push-button calibration with auto-buffer recognition. selectable pH buffer standards, resolution and temperature units. Automatically calculates and displays electrode slope that helps you decide whether to replace pH electrode. ORP Mode: Single point offset calibration allows user adjusts displayed value to a known standard. Absolute or Relative mV measurements provides accurate readings Ion Mode: Standard BNC connector can connects many Ion selective Electrode. 2 to 5 points push-button calibration from low to high concentrations. selectable multiple concentration units, including ppm, mg/L, mol/L. Direct readout ion concentration simplifies measurement process. mV measurement allows user to check performance of ion electrode. Conductivity/TDS/Salinity Mode: Up to 5-point push-button calibration allows user to uses customized calibration solutions. Adjustable TDS factors, cell constants, temperature coefficients and normalization temperature. selectable linear or pure water compensation modes. In salinity measurement modes, selectable practical salinity (PSU) or seawater measurement standard (ppt). Dissolved Oxygen Mode: 1 or 2 points auto-calibration (100% in saturated air or air-saturated water, 0% in zero oxygen solution). Manual salinity and barometric pressure compensation. selectable readout in ppm, mg/L or percentage saturation. multi-parameter meter is capable of measuring up to 9 water quality parameters, including pH, ORP, Ion, Conductivity TDS, Salinity, Resistivity, Dissolved Oxygen, etc. General Features: Automatic Temperature Compensation (ATC) ensures highly accurate measurements over the entire range. Calibration due reminder helps you to calibrate meter regularly. Automatic endpoint function freezes stable measured values. Help message as a operational guide to helps you understand how to use meter. Setup menu lets user customize the calibration points, stability conditions, date and time to meet measurement requirements. Expanded memory stores and recalls up to 500 readings. Built-in real-time clock stamps stored data to meets GLP. Stored data can be transferred into PC via USB communication interface.