1. Introduction

TW-5668The online hardness analyzer is the latest intelligent hardness instrument developed and produced by our company. It uses imported components and hardness film heads, based on the latest polarographic analysis technology, as well as advanced production processes and surface mounting technology. By utilizing this series of advanced analytical techniques, we ensure the long-term stability, reliability, and accuracy of the instrument. Equipped with 4-20mAAnalog voltage output, digital 485 communication output, and other functions. It can be widely used for continuous monitoring of hardness values in solutions such as chemical fertilizers, metallurgy, environmental water treatment engineering, pharmaceuticals, biochemistry, food, aquaculture, and tap water.

2. Main features

1) Dot matrix LCD, multi parameter display, rich content;

2) Advanced embedded system design and surface mount technology have improved product performance and reliability, meeting EMC design requirements;

3) Bilingual programmable switching between Chinese and English to meet different user needs;

4) Fully guided operation mode in both Chinese and English, easy to use, and easy to understand;

5) Programmable automatic or manual temperature compensation methods, flexible and convenient to use;

6) Using high-performance composite electrodes for accurate measurement and rapid response;

7) Two completely isolated current signals can be output, and the output current range can be set separately;

8) Equipped with upper and lower limit alarm functions, the alarm values can be set separately;

9) Equipped with a standard 485 digital communication interface, it can achieve long-distance communication;

10) It has the functions of storing and querying historical data, operation and calibration records;

11) High protection level, reaching IP65, can meet various complex environmental application requirements;

3. Main technical performance

1) Display: Chinese and English display, 192 × 64 dot matrix LCD.

2) Measurement range:（0～10.00)mg/LOr (0-1000mg/L) or (0-1000mg/L)

3) Resolution:0.1mg/L,0.01mg/L,0.1℃

4) Indication error:±1%FS，±0.5℃

6)Automatic temperature compensation：（0～60)℃

8) Current output: (4-20) mA (two-way isolated output)

9) Current accuracy: ± 1% F.S

10) Current load:<800 Ω

11) Alarm output: Two channel alarm output, DC 5A/30V or AC 5A/250V.

12) Storage and transportation temperature: (-20~55) ℃ (excluding electrodes, electrodes should be above 0 ℃)

13) Dimensions: 155mm x 155mm x 140mm (width x height x length)

14) Hole size: 138mm × 138mm

15) Power supply: AC (85-265) V, frequency (45-65) Hz

16) Power: ≤ 10W

17) Weight: Approximately 1.2 kg