|
Analyzer/Transmitter Operational Data |
| 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 128x64 pixels
Readable from 0 to 70 degrees C (display temperature)
Contrast adjustable through keypad
LED Backlighting |
| Sensor Check |
Automatic
self diagnostics |
| Sensor to
Analyzer Distance |
610 meters |
| Power
Requirements |
115 VAC 60 Hz
230 VAC 50 Hz |
| Accuracy |
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 – 0.01ppm 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 |
| Repeatability |
Dissolved
Oxygen –
0.01 ppm
Suspended Solids –
+/- 0.5% |
| Consequence
of Loss of Sample or Power |
User
selectable |
| 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 startup. Cal to reference.
Suspended Solids –
Insitu using gravimetric or portable as reference. |
| Memory backup |
Yes |
|
Analyzer/Transmitter Outputs |
| Analog
|
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. See drawing
IIG04R011 for connection details. |
|
Analyzer/Transmitter Mechanical Data |
| Enclosure
Rating |
NEMA 4X |
| Mounting
Configurations |
Horizontal
handrail Vertical handrail
Wall mount |
| Net Weight |
Shipping
weight is approximately 14 lbs. |
|
DO Sensor Data |
| Electrode
Materials |
No electrode |
| Electrolyte
Materials |
No
electrolyte |
| Sensor Drift |
Less than 1%
per year |
| Wetted
Materials |
Epoxy,
silicon, and polyurethane |
| Temperature
Range |
0 to 50
degrees C |
| Minimum Flow
Rate |
No flow
required |
| Maximum
Pressure |
100 psi |
| Measuring
Range |
0.00 to 25.0
ppm |
| Response Time |
90% in less
than 60 seconds |
| Membrane
Thickness |
No membrane |
| Principle of
Operation (measuring principle of sensor) |
The sensor is
an optical type sensor that measures the fluorescence and quenching
reactions of a ruthenium complex that is immobilized in a sol-gel
matrix. |
| Sensor Cable |
4 conductor,
22 AWG, polyurethane jacket |
| Temperature
Sensor |
thermistor |
| Cleaning
System |
Not required
in most applications. Air or water wash option available. |
|
SS Sensor Data |
| Sensor Drift |
Less than 1%
per year |
| Wetted
Materials |
Epoxy and
polyurethane |
| Temperature
Range |
0 to 65
degrees C |
| Maximum
Pressure |
100 psi |
| Measuring
Range |
0 to 30,000
mg/l |
| Response Time |
90% in less
than 60 seconds |
| Principle of
Operation |
The sensor
operates on the principle of single gap light absorption as a means of
detecting the presence of suspended solids. The sensor utilizes an
infrared emitter to minimize color effects and compensates for emitter
variations due to temperature by measuring source brightness. It
incorporates self-cleaning optics via air or water jet. |
| Sensor Cable |
4 conductor,
22 AWG, polyurethane jacket |
| Cleaning
System |
Air or water
wash option available. Strongly recommended that one be utilized. |
|
Sensor / Analyzer Data |
|
Documentation Provided |
Operator Manual, Packing list, Mod bus RTU appendix |
| Installation
and Start-Up Requirements |
INSTALLATION and STARTUP
- A rear rail mounting kit is available for the standard enclosure
(see Drawing IIG01N010). This mounting kit is design for a standard
2" handrail but can be adapted to square or angle handrails as well.
- Mount the sensors in the desired location. InsiteIG can supply a
sensor handrail mounting kit that easily mounts to most handrails
and slide locks the sensor into place with out the use of tools.
(see drawings IIG02N004, IIG02N005, IIG03N004 and IIG03N005). Again,
this sensor mounting kit is design for a standard 2" handrail but
can be adapted to square or angle handrails as well.
- Open the enclosure of the Mixed Liquor Analyzer. Pass all
connection cables through glands or ½" conduit in the bottom of the
enclosure (gland and conduit are not supplied). The sensor input
connections are made to the terminal block TB5 labeled SENSOR 1 and
TB7 labeled SENSOR 2 (see drawing IIG04R011). The four wires are
color coded and there is a cable shield. Connect the RED wire to the
terminal labeled "RED". Connect the GREEN wire to the terminal
labeled "GRN". Connect the WHITE wire to the terminal labeled "WHT".
Connect the BLACK wire to the terminal labeled "BLK". Connect the
cable SHIELD to the terminal labeled "SHLD". Power connections are
made to the terminal block labeled TB3. The analog outputs are
available on the terminal block labeled TB1 and the relay outputs
are available on the terminal block labeled TB6.
Check switch S4 on the circuit board to be sure that it is set
for the type of power being used (115 volts or 230 volts). Turn
power "on" by using switch S3. Close and secure the enclosure.
After being turned on, the unit will initialize and then jump
into the "RUN" mode and begin displaying Channel 1 "CH 1" content on
the upper portion of the display and Channel 2 "CH 2" content on the
lower portion of the display.
Note: The Model 10 sensor undergoes a thorough and
accurate test and calibration procedure before shipment from the
factory. Calibration of the system at startup is not necessary and is
not recommended. |
| Recommended
Spare Parts |
none |
| Maintenance
Requirements |
MAINTENANCE The analyzer does not require any periodic
maintenance. The sensors must be kept free of debris for accurate
readings.
Model 10 D.O. Sensor: In normal wastewater aeration basins the
Model 10 Sensor will not require a jet clean system; however it is
important that the aqueous sample to be measured be allowed to come in
contact with the measuring surface. The sensor should be visually
inspected on a monthly basis to insure that rags and hair have not
completely covered the measuring surface. During this time we
recommend rinsing the sensor with a water hose.
In systems with high bio-slim and scaling, the integrated jet clean
system is recommended to be used to prevent the slim and scale from
attaching itself to the measuring surface.
Fouling conditions at wastewater treatment facilities varies
considerably from plant to plant. Experience gained during the first
few months of sensor operation will allow the plant operators to
determine their own reasonable schedule of sensor inspection. In no
case should this inspection interval exceed one year.
Model 15 S.S. Sensor: The sensor does not require any periodic
maintenance if the jet clean option is selected (strongly
recommended). The sensor must be kept clean for accurate readings.
Normally, the jet clean system will adequately perform this function.
However, the sensor should be retrieved and cleaned manually on a
periodic basis to remove the heaviest fouling that may impair the
performance of the sensor. The frequency of this cleaning will vary
depending on the application. |
| Sensor
Storage Requirements When Out of Service |
None |
| Level of
Skill (required to operate, maintain and calibrate instrument) |
Minimal
|
| Special Tools
or Other Devices Required for Maintenance and Calibration |
none |
| Warranty
|
2 year |
| Annual Cost
of Replacement/Calibration Parts |
$0.00 |
