FCL3500 Controller / Transmitter
Free Chlorine Controller/Transmitter
FCL3500 Free Chlorine Controller / Transmitter
with pH Compensation
It is suitable for online measurement and control of disinfectant dosing in water industry, swimming pool, water park, secondary water supply and other fields. Disinfection of medical wastewater is not applicable due to complex components


128 * 64 dot-matrix LCD display, switchable in Chinese and English, IP65 protection level, all-weather stable operation
simple menu design, simple and convenient operation, graphical prompt, beautiful and clear interface
software digital filtering is adjustable, with enhanced hardware resistance to interference, making measurements more stable and adapted to complex industrial environments
global access power supply 85~260VAC, but also customized DC model 18 to 36 V D C
RS-485 digital interface, MODBUS-RTU communication protocol, read and write two-way communication, can achieve remote complete control of the instrument
The residual chlorine and pH two parameters were measured simultaneously, and the compensation was calculated automatically
Waterworks Drinking water Swimming pool Food hygiene
Waterworks Drinking water Swimming pool Food hygiene
hypochloric acid measuring range 0.00~20mg/L.00
resolution ratio 0.01 mg/L
Measurement accuracy (electronic unit) ±0.10 mg/L
pH value measuring range 0.00~14.00 pH
resolution ratio 0.01 pH
Measurement accuracy (electronic unit) ±0.01 pH
input impedence ≥1012Ω
  temperature   measuring range -10.0~130.0℃
resolution ratio 0.1℃
certainty of measurement ±0.3℃
Temperature input PT1000
temperature compensation Automatic / manual
Transfer current Output, type Two roads of 4~20 mA (the corresponding range can be set)
Current accuracy ±1% F .S
output loading less-than 500Ω
control Functional relay One (which can be set to the cleaning or alarm function)
Switch relay 2 SPST relays
load capacity 2.5A 230VAC
data transmission Interface Circuit All-way RS485 isolation voltage is 2500Vrms
protocol MODBUS - RTU (read-write two-way communication)
Other parameters working power supply 85~260VAC or 18~36VDC (optional before order)
working temperature 0~60℃
Work humidity Relative humidity was <90%
levels of protection IP65
way to install Panel mount
outline dimension (H×W×D) 108×108×132 mm
Open hole size 92.5 * 92.5 mm (positive tolerance)
Model Specification images
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