High accuracy, drift-free: Using a photodiode to take differentiated measurements of the incoming light at wavelengths of 212 nm, 254 nm, and 360 nm, the SPS-NO3 is able to determine the nitrate concentration with high precision and long-term stability. Organic compounds and turbidity are automatically compensated and therefore have little or no influence on the accuracy.
Optimized measuring ranges: Depending on the expected nitrate loads, the SPS-NO3 can be optimized for the use in groundwater and surface water by choosing the suitable path length. 4 path lengths with different measuring ranges of maximum 0-266 mg/L NO3 are available as standard.
Robust and slim design: The SPS-NO3 consists of a high-quality stainless steel housing (1.4571) and is ideally suitable for rough field use in groundwater and surface water. The nano-coating of the measuring window effectively prevents algae growth. The slim design allows installation in 3” observation wells.
Almost maintenance-free: In comparison to ion-selective nitrate electrodes, the calibration of the SPS-NO3 needs to be checked sporadically, saving time and money during ongoing measurement operations. An optionally available cleaning module with a wiper additionally ensures that the measuring windows are free from unwanted fouling.
Modular and self-sufficient: Configure your field monitoring station from a wide range of SEBA data loggers (Unilog-Light, Unilog, UnilogCom, NetLogCom) in combination with other water quality probes (MPS-PTEC, MPS-D3, MPS-D8, MPS-K16) with or without remote data transmission, battery or solar-powered.
SPS-NO3: Mobile configuration module
Accessory: Cleaning module with wiper
Measurement principle: Attenuation
Optical path: 0,3 mm, 1 mm, 2 mm, 5 mm, 10 mm, 50 mm
Parameter: NO3, NO3-N
Turbidity compensation: Yes
Internal data logger: appr. 2 GB
Reaction Time T100: 20s
Measurement interval: ≥ 30 s
Maximum pressure: 0-3 bar
Housing: Stainless steel (1. 4571/1.4404) or Titanium 3.7035
Dimensions: approx. 470 x 48 mm (10 mm pathway)
Weight: VA ca. 3 kg
Output: TI ca. 2 kg
Interface: Digital Ethernet (TCP/IP), RS-485 (Modbus RTU)
Power consumption: less or equal to 8 W
Power supply: 12…24 VDC (± 10 %)
Calibration /maintenance interval:
Operating temperature: +2…+40 °C
Protection class: IP68