COD CR online automatic monitoring instrument

Ø Performance characteristics

·The digestion colorimetric process of the instrument is completed in one, with a simple and reliable structure, reducing the possibility of errors.

·Adopting imported modified polytetrafluoroethylene transparent hose with a diameter greater than 1.5mm, reducing the probability of particle blockage in water samples.

·It can automatically clean the sampling pipeline to prevent the formation of algae or biofilm.

·After abnormal reset and power failure, the instrument will automatically discharge residual reactants and restore working status.

·Low failure rate, minimal maintenance, and low reagent consumption.

·The intelligent fault self diagnosis function, alarm prompt, instrument management and maintenance are very convenient.

·Adopting multi-channel valves, it has strong anti-corrosion performance, long service life, and is safe and reliable.

Ø Application Fields

Suitable for wastewater with chemical oxygen demand ranging from 10 to 2000 mg/L and chloride concentration below 2.5 g/L Cl ¯, according to user requirements, it can be applied to wastewater with chloride concentration below 20 g/L Cl ¯.

Online monitoring of industrial pollution source wastewater

Online monitoring of industrial process water usage

Online monitoring of water quality at the inlet and outlet of municipal sewage treatment plants

Model number

DH310C1

Method basis

National standard GB11914-89 "Water Quality - Determination of Chemical Oxygen Demand - ********* Salt Method"

measurement range

10~2000mg/L COD

Accuracy

Indication error ≤± 10%

repeatability error

≤±10%

measurement period

The small measurement cycle is 40 minutes, and according to the actual water sample, the digestion time can be arbitrarily modified within 5-20 minutes.

sampling period

Time interval (adjustable from 20 to 9999min) and hourly measurement mode

Correction

The instrument can perform sensitivity and zero calibration at regular intervals

calibration cycle

Adjustable at any interval and time from 1 to 99 days

maintenance cycle

Usually once a month, about 30 minutes each time

analog output

2-channel 4-20mA

signal interface

RS232 or RS485

Switching quantity

6 sets of relay control, capacity 220VAC/2A

Comparison of actual water samples

Error ≤± 10%

MTBF

≥ 720h/time

Environmental Requirements

Suggested temperature+5-28 ℃; Humidity ≤ 90% (non condensing)

Size

Height 1500 x Width 550 x Depth 450 (mm)

Power supply

AC220±10%V，50±10%Hz，5A

Other

Abnormal alarms and power outages will not result in data loss; Touch screen display and command input;

After abnormal reset and power failure, the instrument will automatically discharge residual reactants from the device and restore its working state