ST-2088A precision residual chlorine online detector is an online intelligent residual chlorine detector produced by our company through the introduction of imported accessories from abroad. It uses imported components and permeable membrane heads, and is based on polarographic analysis technology and * production process and surface labeling technology.

ST-2088A precision residual chlorine online detector is an online intelligent residual chlorine detector produced by our company through the introduction of imported accessories from abroad. It uses imported components and permeable membrane heads, and is based on polarographic analysis technology and * production process and surface labeling technology. Using this series of analytical techniques, ensure the stability, reliability, and accuracy of the instrument's long-term operation. It has functions such as Chinese/English menu operation, notepad storage of measurement data, 485 communication, etc. Widely used for continuous monitoring and control of residual chlorine content in circulating water self-control dosing, swimming pool chlorine control, as well as in drinking water treatment plants, drinking water distribution networks, swimming pools, hospital wastewater, water quality treatment projects, etc.

Key Features:

◇ New waterproof, dustproof, and moisture-proof high-quality shell (IP65) technology, surface painting technology, elegant instrument appearance, and draft end.

The product has high precision, high stability performance, and strong resistance to pole interference.

◇ Large screen dot matrix LCD display, Chinese menu operation.

Simultaneous display of multiple parameters: residual chlorine value, hypochlorous acid value, pH value, temperature, output current, etc. are displayed simultaneously, which is intuitive and easy to read, and there is a prompt for exceeding the range.

◇ It has the function of restoring factory settings, slope correction, and automatic recognition of pH standard solution.

◇ Manual/automatic pH compensation function and temperature compensation function.

Communication function: Both RS485 and 4-20mA interfaces use optoelectronic isolation technology. The RS-485 communication interface is compatible with the MODBUS protocol (optional) and can be converted to RS-232. The residual chlorine value corresponding to the 4-20 mA current output can be set arbitrarily. Support internal IoT and customized IoT for customers.

◇ Optional upper computer online acquisition software from our company for data collection and processing.

Watchdog function: Ensure that the instrument panel does not crash.

◇ Power failure protection>10 years.

The core components come from foreign brands.

Technical specifications of ST-2088A precision residual chlorine online detector

Measurement range: Hypochloric acid (HOCL): 0-10.00 mg/L, residual chlorine: 0-20.00 mg/L, pH value: 0-14PH, temperature: 0-60 ℃

Resolution: 0.001mg/L, 0.01mg/L, 0.01pH, 0.1 ℃

Accuracy: ± 1% FS, ± 0.02pH, ± 0.3 ℃

◇ Manual/automatic pH compensation function (0-14) and temperature compensation function (0-60 ℃).

Control interface: Two sets of ON/OFF relay contacts, divided into high point and low point alarm signal photoelectric isolation outputs.

4-20mA current output: Two channel current output, photoelectric isolation protection, improves resistance to pole interference.

◇ 485 interface: Optoelectronic isolation output, supports IoT, (partially compatible with MODBUS protocol).

◇ Relay: Relay hysteresis can be set arbitrarily, relay load 3A 220VAC

◇ Working conditions: The ambient temperature is between 0-60 ℃, and the relative humidity is ≤ 90%

◇ Output load: Load ＜ 750 Ω (4-20mA)

◇ Working voltage: 220VAC ± 10%, 50/60Hz or ordered DC24V and DC12V power supply

◇ Size: 100 × 106 × 168mm

◇ Hole size: 92 × 92mm

Weight: 0.9Kg

Protection level: IP65, waterproof, dustproof, moisture-proof

For more product information, please consult our toll free hotline at +0086 400 880 6367