HANGZHOU QIWEI INSTRUMENT CO., LTD

Foreword
Microcomputer based digital acidity thank you buy my company to develop and produce.

The instrument is composed of an intelligent control of pH microprocessor design, selection of high reliable imported integrated element and the strict screening and refined, stable and reliable performance, simple operation. Suitable for laboratory precision measurement of solution acidity (pH value) and the electrode potential (mV), widely used in light industry, chemical, electrochemical analysis of pharmaceutical, food, epidemic prevention, environmental protection and education scientific research departments.

The "manual" will complete guide you install and use. At the same time, also on the equipment maintenance, maintenance and matters needing attention are introduced in this paper. Please read the "manual", so that you can use our products better, improve the efficiency of your work.

Instrument registered

Before using this instrument, please take a few minutes to fill in the "manual" attached to the user registration card and mail or e-mail to our company. Company customer service engineer to more effectively to provide you with technical support and after sale service.

Technical service

In the instrument within the warranty period, if quality problems, please contact the dealer or the Sales Department of the company. We will conscientiously quickly for you to solve.

If you use the instrument problems, see the "manual" if can't solve, welcome to our customer service service department consultation, we will warmly and timely service for you.

After unpacking the instrument, please check the following devices:
● PHS-3C pH meter(1)
● E201-CW Molded PH composite electrode(1)
● short circuit plug (plug electrode jack on the rear of the instrument)(1)
● electrode holder(1)
● Power adapter (9V DC output)(1)
● standard buffer reagents: pH4, pH 6.86, pH 9.18(1)
● User Guide(1)

The instrument technical characteristics compensation
Model PHS-3C
Measuring Range pH：0～14.00pH; mV:±1600mV; temperature：0～100℃
Resolution pH：0.01/0.1pH，temperature：±1℃
Precision pH：0.01pH，temperature：±1℃
Temperature Compensation 0－100℃Manual
Basic Configuration E-201-C plastic PH composite electrode
(for the solution temperature of 5-60 ℃ range measurement)
The PH standard calibration sample
The DC9V power adapter

Working conditions
● Ambient temperature：0 ~ 40 ℃； Relative Humidity： <85%
● Electricity Supply source：9V DC power supply
● no significant vibration
● In addition to the Earth's magnetic field external magnetic field interference
● Input impedance：≥ 1 × 1012Ω
● zero drift： ≤ 0.01pH ± 1 word / 2 hours
● solution temperature compensation range：0~ 100 ℃
Dimensions and weight：230 × 200 × 60mm (length × width × height) 1.2Kg