chlorides and temperature measuring - paab.com · the main ise (ammonium and nitrate) are placed...
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Particular attention has been paid toidentify a set of sensors stable and atthe same time sensitive. For thispurpose, it has also been introduceda reference electrode with aparticularly high performance and ahigh capacity of compensation of thepollutants.
The used sensors allow a correctreading of the above analytes in thefollowing applications:
– surface waters
– wastewater
– zootechnical and industrial process water
The S470 family consists of 3elements:
S470/NH 4+ Sensor for ammonium ion
(0÷100ppm) with compensation ofthe potassium ion (0÷1000ppm)
S470/NO 3– Sensor for nitrate ion
(0÷100ppm) with compensation ofthe chloride ion (0÷5000ppm)
S470 Combined Sensor forammonium (0÷100ppm) and nitrate(0÷100ppm) ions with compensationof the potassium (0÷1000ppm) andchloride (0÷5000ppm) ions
All the specific electrodes areindividually replaceable.
The main ISE (ammonium and nitrate) are placed alongside the secondary sensors (potassium and chlorideISE) that have the task of monitoring the most important interferers and allow the instrument to have acorrect compensation of the data.
Installation and commissioning are extremely easy to perform, as well as the routine maintenance and thereplacement of the finished sensors.
In the protection ring nut of the probe holder there are integrated cleaning nozzles, which can be connectedto a line compressed air or water. The cleaning system is controlled directly from the control unit.
The configuration and calibration operations of the sensors on the 50 Series control unit have beensimplified to the maximum in order to ensure an extreme ease of use to all the operators.
PROCESS ISE PROBE FOR AMMONIA, POTASSIUM, NITRATES,CHLORIDES AND TEMPERATURE MEASURING
GroundNH4
+
NO3–
Ref.
K+
Cl–
334
mm
1” GAS
Ø 76
S470 is a complete familyof ion-selective (ISE: Ion-selective electrodes)probes suitable formonitoring the performanceof the ammonium ion (asNH4
+ or NH4–N) and nitrate
ion (as NO3– or NO3
–N) intoa liquid matrix.
Tel: +46 533 150 60 - Fax +46 533 169 31 - [email protected] - www.paab.com
selective electrodes housed in an AISI 316/PVC sensor body, realized inorder to offer the maximum chemical compatibility with the projectenvironments.
These sensors are individually replaceable and have been constructed in
Nozzles for automatic cleaning (managed by the control unit) areintegrated into the probe.
Communication with the controller is made via digital RS485 Modbus
can be installated even at considerable distances from the control unit.
Calibration
The probe is factory pre-calibrated using standard solutions. The curvestored in this way can be customized by entering the analysis values of the
peculiarities of the matrix).
It's possible to enter a table of custom values (6 points) and let the probework on a custom curve. The factory calibration curve, however, remainsalways available and could be set again as default.
NH4+
0÷100 ppm(*)
K+
0÷1000ppmNO3
–
0÷100 ppm(*)
Cl-
0÷5000ppmTemperature0 ÷ 50°C
Measuring range
Ion-selective sensorsMeasuring method
± 1mg/L or ± 1 %Precision
90% of the value in less than 60 secondsResponse
maximum < 1 secondRefresh time
4 ÷ 10 pHOperating pH range
0 ÷ 50°COperating temperature
1 barMaximum pressure
AISI 316Body material
NBRO-ring
Black PVC Protection, electrodes'housing and superior cap
IP68 Sensor+cableMechanical protection
with internal NTC probeTemp. compensation
12 ÷ 24Vdc Power supply
10m submersibleCable
Modbus RTU Standard ProtocolSignal interface
(*) on request 0÷1000ppm
Tel: +46 533 150 60 - Fax +46 533 169 31 - [email protected] - www.paab.com