High quility PHS-3B Digital Precision PH Acidity Meter

High quility PHS-3B Digital Precision PH Acidity Meter

The Model pHS-3B pH meter is a 3 1/2 digit decimal pH meter with ATC (auto temperature compensation) or MTC (manual temperature compensation). It can measure the temperature of the medium to be measured and display the values of temperature, pH and mili-voltage It is suitable to measure the pH value of aqueous solution and the potentials of electrodes in laboratories of research institutes, factories and mines. If it is equipped with an appropriate ion selective electrode, it can be used as a terminus display device for potential titration.

Main Specification:
1. After having been powered on and warmed up for thirty minutes, the instrument can be used continuously under the following conditions:
(1) Ambient temperature:0~+40℃;
(2) Relative humidity:less than 85%
(3) Power supply:110V AC±11V AC,60Hz±1Hz
or 220V AC±11V AC,50Hz±1Hz

2. Main parameters:
(1) Measuring range:pH:0~14.00pH
mV:0~±1999mV(automatic polarity display)
T:0~100 degree
(2) Error of electro-unit:pH:0.01pH
mV:±0.1%F.S
(3) Meter accuracy: pH:±0.01pH±1 digit
mV:±0.1%F.S
T:±0.5℃±1 digit
(4) Input impedance:³1012W
(5) Zero drift:≤0.01pH ±1 digit/3h
(6) Error of electro-unit after temperature compensation:±0.01pH
(7) Overall dimension:280×200×95mm
(8) Weight:1 kg
(9) Power consumption:1.5 W

Working principle of the instrumen:

PHS-3B precision pH meter is using pH composite electrode on DC potential in different pH value on tested solution ,By pH preamplifier and temperature sensor for temperature measuring signal of the test solution stack,And input to the A/D converter after automatic operation,In order to achieve the pH accessoriesdigital display.Same with an appropriate ion selective electrode potentiometric titration analysis, in order to achieve end point potential display.

Accessories: