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SMR21 Submersible Water Quality Optical Nitrate (NO3-N) Analyzer

Reference SMR21

Condition: New

Nitrate Analyzer is connected directly via RS485 communication interface, providing simple, reliable, cost- saving process data with remote monitoring, calibration, configuration and diagnostics capabilities.
The Nitrate Meter housing in a robust IP68 proof enclosure, 1000 N tensile strength cable, up to 1.2 km digital data transmission, the Nitrate NO3-N and Temperature Analyzer is ideally used in water/wastewater industry.

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OVERVIEW
SPECIFICATIONS
OPTIONS
ORDERING MATRIX
Data sheet
Download
Accessories

The Sensor measures:	Nitrate
Cable Length:	5 meters
Sensor IP Rating	IP68
Sensor for use in:	Water Quality
Communication	RS485

SMR21 Data Sheet Download (2.46M)

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ECO2 Flow, Level, Water Quality Logger Battery Powered Logger

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The ion selective electrode continuous measurement of nitrate is carried out with speci c membrane that is selective of ammonium ion. That membrane creates charge seperation between the water surrounded electrode and internal lling solution. The charge is measured as a voltage that changes the concentration in the water adjacent the membrane. Compared with the traditional colorimetric method, there are many advantages such as fast response time, more accurate, easier and no reagents used.

■ Robust IP68 Water Submersible Enclosure, Solution Without Cabinet
■ 1 sec On-line Realtime Measurement
■ 0.05 W Ultra Low Power Consumption, Ideal for Outdoor Applications
■ Temperature Compensation
■ High Reliability, Drift Free
■ Lightening and Surge Protection for Power and RS485 Communication
■ 1.2 Km RS485 Digital Communication, Minimize Cabling and Engineering Cost
■ Software Configuration Calibration and Data Monitoring
■ Standard Modbus RTU Protocol, Direct Connected with PLC, HMI, Eliminate I/O Module Cost

Typical Application:

Type	Applications	Measurements	Order Selections
A	Source Water (River, Reservoir)	Pressure Level pH Temperature Conductivity Dissolved Oxygen Turbidity Nitrate (NO3- ) Ammonium (NH4+) Chloride (CL-) Nitrite (NO2-)	SMR01 SMR02 SMR04 SMR06 SMR07 SMR09 SMR10 SMR21 SMR23 SMR27 SMR28
B	Ground Water	Pressure Level pH Temperature Conductivity	SMR01 SMR02 SMR04 SMR06 SMR07
C	Water Treatment	Pressure Level Free Chlorine pH Conductivity TDS Turbidity Salinity Differential Pressure	SMR01 SMR02 SMR03 SMR04 SMR07 SMR08 SMR10 SMR11 SMR14
D	Water Distribution	Pressure Level Free Chlorine pH Temperature Conductivity TDS Turbidity	SMR01 SMR02 SMR03 SMR04 SMR06 SMR07 SMR08 SMR10
E	Wastewater Effulence	Level pH Temperature Conductivity Dissolved Oxygen Suspended Solid Nitrate (NO3-) Chloride (CL-)	SMR02 SMR04 SMR06 SMR07 SMR09 SMR12 SMR21 SMR27
F	Fisheries, Aquarium and Aquaculture	Level pH Temperature Dissolved Oxygen Turbidity Salinity Level Free Chlorine ORP Temperature Nitrate (NO3-) Ammonium (NH4	SMR02 SMR04 SMR06 SMR09 SMR10 SMR11 SMR02 SMR03 SMR05 SMR06 SMR21 SMR23
G	Factory, Commercial Building	Conductivity TDS Humidity and Temperature Differential Pressure	SMR07 SMR08 SMR13 SMR14
H	Weather	Humidity Barometer Wind Speed and direction	SMR13 SMR15 SMR24
I	Environment I (Strain, Landslide, Level)	Rain Gauge Pyranometer Level (water pressure) Vibration Wire Input Noise	SMR29 SMR30 SMR02 SMR19 SMR26

SMR21 Nitrate (NO3-N) Analyzer:

Type	Optical
Measurement range	SMR21-3: 0.1~25 ppm (mg/L) SMR21-4: 1~50 ppm (mg/L) SMR21-5: 1~100 ppm (mg/L)
Measurement range	0.1 ppm
Accuracy	±5% of reading ±0.5 ppm in standard solution
Resolution	0.1 ppm
Repeatability	±5% of reading ±0.5 ppm in standard solution
Light Source	LED 220 nm
Beam Angle	180°
Light Path Length	1 mm, 2 mm, 5 mm
Operating pressure	Max. 3 Kgf/cm²
Operating pressure	Max. 5 Kgf/cm2²
Operating Temperature	0~85°C
Process flow rate	<1 min
Response time	<3 min(90%)
Protection	IP68
Temperature sensor	Pt100
Temperature measurement range	0~85°C
Turbidity accuracy	±5% FS
Turbidity measurement range	SMR21-3: 0~10 NTU SMR21-4: 0~100 NTU SMR21-5: 0~100 NTU
Housing	SS316L; Titanium (Optional)
Dimension	Φ35x185 mm
Weight	analyzer: approx. 180 g; cable: 80 g/m

PAD01	IP 67 Handheld Muptiparameter Water Quality Meter
FDC1	IP68 Field Display, 1 SMR Sensor input)
HMI1	IP66 Display Controller Logger, 2 SMR Sensor inputs
HMI2	IP66 Display Controller Logger, 4 SMR Sensor inputs
HMI3	IP66 Display Controller Logger, 8 SMR Sensor inputs
SFC01	Flow Chamber (SMR04/05/07/08/09/10/11/12/21/23/27/32/33/34/39/40/41)
SFC02	Flow Chamber (SMR43/44/45/46)
BOX01	RS485 hub(4 ports)
BOX02	RS485 hub(8 ports)
CAB12	IP68 2 ports RS485 cable

Performing the Calibrate/Check data via a Laptop:
If you are not using the AQUAS data logger, it is necessary to use Cables CAB03-A and CAB06 to do the calibrate/check data via a laptop: see below photo.