Portable pH meter HD2156

processwith LCD displaywith conductivity meter

Mod.HD2156 is a portable instrument for the measure of pH, ORP, conductivity, resistivity, TDS and temperature. It can be connected to pH or ORP electrodes and to 2 or 4 electrodes conductivity cells including integral temperature sensor. The pH calibration can be operated both manually or automatically and the buffer value can be selected within 13 memorized pH buffer values. The instrument can be calibrated with standard conductivity solutions, 147 uS/cm, 1413 uS/cm 12880 uS/cm and 111800 uS/cm. The instrument is characterized by advanced functionalities as automatic measure thermocompensation, hold function, relative indication, maximum, minumum and average value computation. The automatic power off can be disabled. The instrument can cover with high accuracy wide measuring ranges. Conductivity measure thermocompensation is automatic, and temperature coefficient can be configured with any value inside the limits 0.00 to 4.00%/°C. Reference temperature can be set at 20 °C or 25°C. The instrument can be connected to conductivity cells with 10 cm, 1.43 cm, 1.0 cm, 0.1 cm cell constant. The ratio c/TDS can be freely set inside the range limits 0.4 - 0.8. A large area (52 x 42 mm) 2x4½ digit LCD display allows pH , mV, conductivity (or resistivity or TDS) and temperature visualization. The instrument includes a galvanically isolated RS232C serial interface. Power supply is from 4 batteries, 1,5 V, AA type, with 200 h average operation (alkaline batteries, 1800 mAh). The instrument includes a power adapter 9CVdc / 250 mA. Battery charge level is shown on the display.