M2000 Dual Sensor ODO and TSS

InsiteIG Model 2000 Dual Sensor ODO and TSS perfect for compliance of discharge points

The InsiteIG Model 2000 dual channel analyser is a unique system that combines advanced electronics with solid-state optical sensors. The analyser will accept any combination of two sensors, (DO or SS) and automatically configure for the correct operation. The system allows for flexible and economical mixed liquor monitoring and control. The DO sensor does not need membranes, fill solutions, nor routine calibrations and maintenance. The SS sensor is based on near infra-red technology, which eliminates inaccuracies caused by changes in the process colour or changes in particle size.

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LEGACY MODEL- New model available DCA 

The Model 2000 Mixed Liquor Analyser is a two channel analyser designed for the continuous measurement of dissolved oxygen and/or suspended solids in mixed liquor aeration basin. The microprocessor-based electronics of the Model 2000 analyser provide a high degree of flexibility and ease of use. The instrument is designed to operate with any combination of InsiteIG sensors in a variety of applications.

The DO sensor to be used with this analyser is an optical type sensor that measures the fluorescence and quenching reactions of a ruthenium complex that is immobilised in a sol-gel matrix. The SS sensor operates on the principle of single gap infra-red light absorption as a means of detecting the presence of suspended solids.

Ambient condition requirements
Temperature – minus 40 degrees C to 55 degrees C
Humidity – 0 to 100 percent
Altitude – 0 to 10,000 feet
Display LCD Graphic Display with 128 x 64 pixels
Readable from 0 to 70 degrees C (display temperature)
Contrast adjustable through keypad
LED Backlighting
Sensor Check Automatic self diagnostics
Sensor to Analyser Distance 2000 feet (610 meters)
Power Requirements 115 VAC 60 Hz/230 VAC 50 Hz

Dissolved Oxygen – 1% of reading or 0.02 ppm, whichever is greater
Suspended Solids – 3% of reading or 20 mg/l, whichever is greater
Sensitivity or Resolution
Dissolved Oxygen – 0.01 ppm
Suspended Solids –
1 mg/l below 1000 mg/l
10 mg/l between 1,000 and 9,999 mg/l
100 mg/l above 10,000 mg/l

Dissolved Oxygen – 0.01ppm
Suspended Solids – +/- 0.5%

Measuring ranges
Dissolved Oxygen –
0 to 25.0 ppm
0 to 50 degrees C
Suspended Solids –
0 to 30,000 mg/l
Temperature compensation 0 to 50 degrees C

Calibration Method Dissolved Oxygen –
Not required nor recommend during start-up. Cal to reference.
Suspended Solids –
In situ using gravimetric or portable as reference.

Analyser/Transmitter Outputs
0 to 20 or 4 to 20 milliamp (user selectable) for DO
0 to 20 or 4 to 20 milliamp (user selectable) for SS
Digital communication Modbus RTU RS-232
Relay There is one independent programmable set point control relay for each channel. These relays are Form-C with contacts rated 10/6 amps resistive load at 125/250 VAC. Two Form-A relays with contacts rated 10/6 amps resistive load at 125/250 VAC are used for the jet clean function. The connections for the relay outputs are available from TB6.

Ordering Information:

2000-1 System–2 D.O. sensors
2000-2 System–1 D.O. + 1 S.S.
2000-3 System–2 S.S. sensors

AM1 Analyser mounting hardware
SS1 S.S.Sensor mounting hardware
DO1 D.O. Sensor mounting hardware
IH1 Internal heater
CA1 Compressor assembly


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