PHS-3B precision pH meter

 PHS-3B precision pH meter

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: