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Name:CL-2059A industrial online residual chlorine controller
Measuring range:0-20.00mg/L
Accuracy:±1.0%FS
Signal output:4-20mA
Communication interface:Modbus RS485
Protection:IP65
Relay:AC 220V, 5A
Power supply:220VAC or DC24V

Measuring range:

Chlorine: 0 ~ 20.00mg / L, Resolution: 0.01mg / L

Temperature: 0 ~ 99.9 ℃, 0.1 ℃ resolution

Accuracy: Chlorine: better than ± 1% or ± 0.01mg /L.

Temperature: better than ± 0.5 ℃ (0 ~ 50.0 ℃).

Minmum detection: 0.01mg /L

Repeatability Chlorine: ± 0.01mg / L

Stability Chlorine: ± 0.01 (mg / L) / 24h

Galvanically isolated output: 4 ~ 20 mA (load <750 Ω) Current Output

Measurement parameters can be selected independently (FAC, T)

Output current error: ≤ ± 1% FS

High and low alarm: AC220V, 5A, each channel can be selected independently measured parameters corresponding (FAC, T)

Alarm hysteresis: can be set according to the selected parameters

Communication: RS485 (Optional)

Working environment: Temperature 0 ~ 60 ℃, Relative humidity <85%

Installation: Opening type, panel mounted.

Dimensions: 96 (L) × 96 (W) × 118 (D) mm

Hole Size: 92 × 92 mm

Instrument Weight: 0.5kg

Standard set: chlorine analyzer, constant-current chlorine electrode, constant-current groove (3-hole), electrode cable (5m).User’s manual in English.


Highly intelligent: CL-2059A Industrial online residual chlorine analyzer adopts industry leading overall design concept of the core components to ensure high-quality, import instruments.

Current output: Adopting isolation technology, strong anti-jamming capability, measurement parameters selectable, high and low alarm settings.

High and low alarm: hardware isolation, each channel can be arbitrarily chosen measurement parameters, can be preset hysteresis.

Temperature compensation: 0 ~ 50 ℃ Automatic Temperature Compensation

Waterproof and dustproof: good sealing instrument.

Menu: Easy operation menu

Multi-screen display: There are three kinds of instrument display, user-friendly display for the different requirements.

Chlorine calibration: provide chlorine zero and slope calibration, clear menu design.


CL-2059A is a total new industrial residual chlorine analyzer, with high intelligence, sensitivity. It can measure residual chlorine and temperature simultaneously. It is widely used in such industries as thermal power plant, running water, pharmaceutical, drinking water, water purification, industrial pure water, swimming pool disinfection residual chlorine continuous monitoring.


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