[JXCT] Water Quality Detector DO Probe Dissolved Oxygen Sensor Controller

Charpter I Product Introduction

The dissolved Oxygen on-line analyzer is one of the intelligent on-line chemical analysis instruments, is widely used in thermal power, chemical fertilizers, metallurgy, environmental protection, pharmaceutical, biochemical, food and tap water and other solutions dissolved oxygen, saturation, oxygen partial pressure and temperature monitoring. This product uses the fluorescence method to dissolve the oxygen probe, the sensor product life is long, does not need the maintenance, the performance is good, the continuous monitoring data realizes the  remote  transmission  monitoring and the record through the transformation output connection recorder, also can connect RS485 interface through the MODBUS-RTU protocol can be easily connected to the  computer to achieve monitoring and recording.  At  the  same  time the equipment has 2-way relay interface, can set the alarm point output.

The probe of this product is a fluorescence probe, which uses the principle of fluorescence quenching to measure. The fluorescence method has been very active in recent years. It can overcome the shortcoming that the traditional methods can not

measure continuously on-line, free from magnetic field interference, no consumption electrode, high sensitivity, low detection limit, long life, in the sustainable on-line monitoring and other advantages have been widely used. With a wide measuring range, good linear, waterproof performance, easy to use, easy to install, board card Modular design, assembly configuration, using 2.4 inches 128 * 64 lattice screen, isolation transmission output, less interference, isolation of RS485 communication, measurement of dissolved oxygen, temperature measurement, upper and lower limit control, variable output, RS485 communication, configurable temperature manual, automatic compensation function, setting of high and low alarm function, and hysteresis, can be set Buzzer,  LCD  backlight switch function, increase the function of Universal Password.

Parameter name Parameter option

DC electric supply Electric consumption Measurement precision Measurement range

IONIC

resolution

12-24V DC

≤0.15W(@12V DC , 25℃) 3%F.s

0-20mg/L

0.01 mg/L

Output signal RS485(Mondbus protocol)/4-20mA

(choice)

  Repeatability ±2%  Probe size 155mm*12mm(length*diameter)

Temperature supply

-20℃-80℃(manual/automatic)

Response speed ≤15s

Relay alarm Two-way normally open normally

closed alarm relay

· Note:The default length of the probe cable is 5 meters.

A typical aqueous solution control system is shown below, including an integrated system with the control box as the  core,  in which the control box is connected to a  dissolved  oxygen probe and the output acquisition processing is displayed, at the same time, the device can output RS-485 signal or analog signal  to the computer, PLC, SCM,  etc. . At the same time, the back- end of the relay can do a variety of relay control and alarm, can control the pump or valve and other equipment.