Envco – Environmental Equipment

The Insite IG Model MPA48 multi-channel analyzer is a unique system that combines advanced electronics with solid-state optical sensors. The analyzer will accept any combination of 4 to 8 sensors, (DO, SS, pH, and ORP) and automatically configure for the correct operation. The system allows for flexible and economical process monitoring and control. The DO sensor does not need membranes, fill solutions, nor routine calibrations and maintenance. The SS sensor is based on near infrared technology, which eliminates inaccuracies caused by changes in the process color or changes in particle size. The pH and ORP electrodes are both flat glass, with double reference junctions, and temperature compensated. Both probes feature quick disconnect cartridge design for easy maintenance and fast changes.

Sensors available for the MPA48
The Model 10 Dissolved Oxygen sensor is designed for the continuous monitoring of dissolved oxygen in water and wastewater where parts per million accuracy is required. The unit will display dissolved oxygen content in PPM, mg/l or %SAT. The resolution in PPM and mg/l mode is 0.01 over a range of 0.00 to 3.99 and 0.1 over a range of 4.0 to 25.0. The resolution in %SAT mode is 0.1%SAT over a range of 0.0 to 99.9%SAT and 1%SAT over a range of 100 to 400%SAT. Temperature is displayed in 0.1 degree Celsius increments over a 0.0 to 50.0 degree Celsius range or 1 degree Fahrenheit increments over a 32 to 122 degree Fahrenheit range. It incorporates self-cleaning optics via air or water jet.

The Model 15 TSS sensor has been designed for medium ranges (0 to 30,000 mg/l) as commonly found in aeration basins of wastewater treatment plants and comes in pipe insertion configurations.

The Model 15L sensor has been designed for low ranges (0 to 1500 mg/l) as commonly found in effluent streams. Both sensors utilize an infrared emitter to minimize color effects and compensates for emitter variations due to temperature by measuring source brightness. They incorporate self-cleaning optics via air or water jet.

The Model M50 is a microprocessor based preamp interface for the M51 and M52, pH and ORP electrodes (you must specify pH or ORP when ordering the M50) . The unit will display the pH value in 0.01 pH resolution over a range of 0.20 to 12.00 pH or the ORP value in 1 mV resolution over a range of - 2000 to 2000 mV. Water temperature may also be measured for automatic temperature compensation.

The temperature may be displayed in degrees Celsius or degrees Fahrenheit. Temperature is displayed in 0.1 degree Celsius increments over a 0.0 to 50.0 degree Celsius range or 1 degree Fahrenheit increments over a 32 to 122 degree Fahrenheit range.

They all incorporate self-cleaning via air or water jet with optional cleaning kit.

The MPA 48 Analyser handles up to 8 sensors allowing one box to control all your aeration or wastewater control needs. With standard digital outputs the MPA 48 is futureproof for new installations.

MPA 48 Specifications
Measuring Range
DO — 0 to 25 ppm
SS — 0 to 30,000 mg/l
pH — 2 to 12 pH
ORP- +/- 2000mV

Accuracy
DO — 1% of reading or .05 ppm, whichever is greater
SS — 3% of reading Sensitivity / Resolution DO — .01 ppm below 4.00, .1 ppm above 4.0
SS — 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

Repeatability
DO — .01 ppm
SS — +/- 1%

Sensor Drift
DO & SS — Less than 1% per year

Temperature Range
DO & SS — 0 to 60 degrees C
pH & ORP — 10 to 100 degrees C

Response Time 95% in less than 60 seconds
Sensor Check Automatic self diagnostics

Outputs
Up to 8 Opto-isolated 4-20 milliamp (one for each channel)
Optically isolated RS-485 Modbus
RS-232 serial
Up to 8 dry contact 10 amp relay setpoints (one for each channel)
1 alarm relay
1 clean relay
Memory Backup Yes

Display Backlit graphical LCD display with UV protection
Contrast adjustment via keypad
Continuously displays all channels
Sensor Cable Length 33 feet standard (optional lengths up to 2000 ft)
Ambient Temperature minus 20 degrees C to 70 degrees C
Ambient Humidity 0 to 100 percent
Enclosure Rating NEMA 4X
Wetted Materials Epoxy, polyurethane, glass, and PVC
Maximum Pressure 100 psi

Ordering Information
MPA-48 MPA-48 analyzer - comes standard with I/O for four sensors (additional I/O daughter boards are available below). Each channel has isolated 4-20 milliamp and set-point relay. All active channels displayed continuously on backlit display.

Available Sensors Important Note - additional cable lengths over 33' add per foot
10-33 Model 10 DO Fluorescent Dissolved Oxygen Sensor (0-25 PPM) submersible sensor designed for open vessels & tanks (33 denotes standard cable length in feet- substitute 33 for special cable lengths)

15-33 Model 15 Infrared Suspended Solids Sensor (250 - 30,000 mg/l) submersible sensor designed for open vessels & tanks (33 denotes standard cable length in feet- substitute 33 for special cable lengths)

15L-33 Model 15L Infrared Suspended Solids Sensor (0 - 1,000 mg/l) submersible sensor designed for open vessels & tanks (33 denotes standard cable length in feet- substitute 33 for special cable lengths)

15T-33 Model 15T Infrared Suspended Solids Sensor (250 - 30,000 mg/l)pipe insertion in 3" PVC tee (33 denotes standard cable length in feet- substitute 33 for special cable lengths)

15PI-33 Model 15PI Infrared Suspended Solids Sensor (250 - 30,000 mg/l) stainless steel, screw in pipe insertion (33 denotes standard cable length in feet- substitute 33 for special cable lengths)

17-33 Model 17 Infrared Suspended Solids Sensor (250 - 30,000 mg/l) stainless steel hot tap pipe insertion with ball valve (33 denotes standard cable length in feet- substitute 33 for special cable lengths)

pH & ORP
M50-33 M50 holder for pH and ORP electrodes for submersible applications includes preamp , temperature sensor, and digital convertor (note that electrodes are not included and must be ordered separately) (33 denotes standard cable length in feet- substitute 33 for special cable lengths)

M51 ph electrode - double reference junction, flat glass (2-12 pH)
M52 ORP electrode - flat glass

I48 Additional I/O daughter boards -one per sensor, includes sensor input, isolated 4-20 and setpoint relay output - To be used for channels 5-8

Analyzer & Sensor mounting options
AM4 analyzer mounting hardware kit for 2" handrail mounting
DO1 sensor mounting hardware kit for 2" handrail mounting