PHSJ-4A pH Meter

Specifications

Characteristic:

1. Blue screen & LCD displaying;

2. Automatic and manual temperature compensation, automatic calibration and automatic calculation of percentage theoretical slope of electrodes;

3. Measurement results can be stored, deleted, searched and printed. It can store 50 sets of  measurement data;

4. Protection from electricity cutting off.;

5. One point or two points automatic calibration can be conducted on the meter with five types of pH buffer solution selected by users within the temperature range of 0-60°C;

6. With RS-232 interface for connecting TP-16 printer using DC 1.0 software of data-collection to communicate with computers;

7. Users can measure the pH value of ultra-pure water, pure water and boiler water through adjustment of equipotential point to select special electrodes. 

Specification:

1. Measurement range : pH: (0.000~14.000)pH

                                            mV: (-1999.9~1999.9)mV

                                             Temp.: (-5.0~105.0) °C

2. Resolution: pH:0.001 pH, 0.01pH, 0.1pH

                          mV:0.1 mV

                          Temp.: 0.1 °C

3. Accuracy  pH: ±0.005pH±ibit

                       mV: ±0.2mV(in the range of ±399.9mV) ±1bit

                          or ±0.03%(FS)(in the other range) ±1bit

                       Temp.: ±0.3 °C±1bit

4. Input impedance:3x 10 ¹² Ω

5. Stability: ±0.005pH ±1bit/3h

6. Temperature compensation range: -5~105.0°C

7. The temperature of the measured solution:5~60°C