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Organic Analyzer

SMR44 Series

Chemical Oxygen Demand Analyzer

Description

Chemical Oxygen Demand Analyzer is connected directly via RS485 communication interface, providing simple, reliable, cost- saving process data with remote monitoring, calibration, configuration and diagnostics capabilities. The Chemical Oxygen Demand Meter housing in a robust IP68 proof enclosure, 1500 N tensile strength Kevlar reinforced cable, up to 1.2 km digital data transmission,COD meter and COD Analyzer is ideally used in water/wastewater industry.

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Features

All-in-One Compact Housing, Built-in Transmitter and Sensors
Robust IP68 Water Submersible Protection
Plug & Play, On-line Realtime Measurement
Ultra Low Power Consumption, Ideal for Outdoor Applications
1500 N Tensile Strength Kevlar Reinforced Cable
Surge Protection for Power and RS485 Communication
RS485 Digital Communication, Minimize Cabling and Engineering Cost
Standard Modbus RTU Protocol, Direct Connected with PLC, HMI
Sapphire Glass Windows to Prevent Scratch
Innovative Nano Coating to Remain Window Clean
Auto Cleaning Wiper, Less Maintenance
Turbidity or Suspended Solids Compensation
Onboard Memory Allowing Users Easily Calibrate and Configure Sensor at Lab and Distribute to Various Fields Sites
Software Tool for Data Monitoring, Calibration, Configuration and Diagnosis
IECEx/ATEX Ex ia IIB T5 Ga Explosive Proof Certification

Applications

Drinking water, surface water, industry, water treatment, wastewater

Specifications

General

Output Signal: RS485 (Modbus RTU protocol), 19,200 bps, 8 data bits, no parity, 1 stop bit; 4~20 mA
Data Resolution: 16 bits (0.001% FS)
Surge Protection: 4000 V DC
Power: 5~12 VDC, 400 mA (SMR44-1~4); 12 VDC ±10%, 0.5 A (SMR44-5)
Protection: polarity, overload, short circuit
Safety: CE, FCC

Measurement Method
The analyzer consists of an UV 254 nm light source, a sample cell, and a light detector (photo detector). Incident light is absorbed by the sample, and the light is measured by the detector. The value depends on the amount of absorbance in the sample. The transmitter uses a long life LED and the 180° light method in accordance with International standard to assure accurate measurement values. An automated mechanical wiper is to remain surface clean and remove air bubbles of the optical window in order to maximize the accuracy and minimize the maintenance requirement.

SMR44 Chemical Oxygen Demand (COD) Analyzer

Measurement range	SMR44-1: 0~100 mg/L (20 mm) SMR44-2: 0~800 mg/L (5 mm) SMR44-3: 0~2,500 mg/L (2 mm) SMR44-4: 0~5,000 mg/L (1 mm) SMR44-5: 0~30,000 mg/L (1 mm)
Accuracy	SMR44-1~4: ±5% in standard solution SMR44-5: ±10% in standard solution (0~500 mg/L); ±5% in standard solution (500~20,000 mg/L); ±10% in standard solution (20,000~30,000 mg/L)
Resolution	0.01 mg/L
Repeatability	±3% in standard solution
Light source	LED 254 nm
Beam angle	180°
Light path length	1, 2 , 5 , 20 mm
Process flow rate	Max.3 m/s
Operation pressure	Max.10 Kgf/cm²
Operating temperature	0~50 °C
Response time	3 secs
Protection	IP68
Housing	SS316L
Dimension	SMR44-1~4: Φ 39 Χ 320 mm SMR44-5: Φ 68X443 mm
Weight	analyzer: approx. 1 Kg Cable: 80g/m