Dissolved Organics Monitors

Many dissolved organic carbon compounds (DOC) commonly found in potable water absorb ultraviolet radiation. These include Humic and Fulvic Acids that gives water a characteristic yellow color. Dissolved organics can also result in the formation of Trihalomethanes (THMs) as a by-product of chlorination.
The AV400 Series of monitors are designed to be reagentless and virtually maintenance free in order to optimize the performance of potable water treatment plants, providing significant cost savings and ensuring the quality of the final treated water.

The transmitter incorporates the latest technology to provide a highly reliable, yet flexible, feature-packed device designed to satisfy a diverse range of process monitoring and control applications. On dual-input monitors both measured parameters are displayed simultaneously.

Low Range Monitors
AV410
AV411
Number of Inputs
1
2
Sensor Range
0 ... 20 mg/l C
Linearity
±2 % of reading or 0 ... 0.15 mg/l C*
Reproducibility
0.15 mg/l C
Maximum Current Output
Scale Expansion
0 to 2 mg/l C
Resolution
0.01 mg/l
* Whichever is greater
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High Range Monitors
AV420
AV422
Number of Inputs
1
2
Sensor Range
0 ... 100 mg/l C
Linearity
±2 % of reading or 0 ... 0.5 mg/l C*
Reproducibility
0.5 mg/l C
Maximum Current Output
Scale Expansion
0 ... 20 mg/l C
Resolution
0.1 mg/l
* Whichever is greater
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Mixed Range Monitors
AV412
Number of Inputs
2
Two Sensor Ranges
0 ... 20 mg/l C
0 ... 100 mg/l C
Linearity
±2 % of reading or 0 ... 0.15 mg/l C*
±2 % of reading or 0 ... 0.5 mg/l C*
Reproducibility
0.15 mg/l C
0.5 mg/l C
Maximum Current Output
Scale Expansion
0 ... 2 mg/l C
0 ... 20 mg/l C
Resolution
0.01 mg/l
0.1 mg/l
* Whichever is greater
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