PHS-3FA laboratory use PH meter Introduction
PHS -3FA is the strongest function on market, using the most convenient
a PH meter.Chinese character display, Chinese menu to guide the operation is very
convenient, versatility, high measurement precision, etc.Can be widely used in thermal
power, chemical fertilizer, metallurgy, environmental protection, pharmaceutical,
biochemical, food and water in the solution PH value of the continuous monitoring. Features
1 Chinese LCD display, menu in Chinese style, Chinese history
2 Microcomputerized: using high performance CPU chip, high precision AD conversion
technology and SMT technology, complete multi-parameter measurement, temperature automatic compensation, automatic conversion range, instrument self-checking, high
precision and good repeatability.
3 High reliability, single structure, only a piece of circuit board, not the complex function
switch, knob and potentiometer.
25 ℃ conversion: nernst slope electrode temperature compensation, pure water and
ammonia ultrapure water 25 ℃ respectively.Input impedance omiga > 1012
4 Electrode diagnosis: a variety of calibration methods, EO, S query, monitoring the
electrode performance
5 The solution PH value automatically convert: persisting the fluid temperature curve,
calibration automatically converted into a standard liquid under the set temperature of PH value
6 Network function: RS232 bi-directional communication;Can match the printer or
TLab8.0 communication and data processing software.
7 The historical data: data storage, 3000.Notepad function: recorded 200 messages.
8 Built-in real-time clock: provide all kinds of function of the time benchmark, etc Technical Parameter
1 PH: the measuring range: 0 ~ 14.00 PH, - 1999 ~ + 1999 mv, 0 ~ 99.9 ℃
2, resolution: PH 0.001, 0.001 mV, 0.1 ℃
3, accuracy: + / - 0.005 PH, plus or minus 0.2 mV, plus or minus 0.3 ℃
4, the input impedance: Ω 1012 or higher
5, automatic temperature compensation scope: : 0 ~ 99.9 ℃, manual: 0 ~ 99.9 ℃
6, temperature compensation, nernst slope electrode temperature compensation, pure
water and ammonia ultrapure water 25 ℃ respectively
7, communication interface, RS232 bi-directional communication
8, output: 0 ~ 1400 mv, 1 mv/PH 0.01
9, power supply: AC220V plus or minus 22 v, 50 hz + 1 hz
10, external power supply working conditions: temperature: 0 ~ 60 ℃
11 Relative humidity: < 90%
12, the clock precision: + / - 1 / month
13, data storage quantity: 3000 points
14, using preservation: > 5 years;The clock precision: + 1 minutes/month
15, the calibration way: a little, two-point calibration, manual input EO, S
Introduction
A pH meter is an instrument used to determine the pH value of a solution. pH meter is a common analytical instrument widely used in agriculture, environmental protection and industry. Soil pH is one of the important basic properties of soil. Factors such as the temperature of the solution to be tested and the ionic strength should be considered during the pH measurement.
