Gas probe SPS-NO3

for observationstainless steelrugged

Robust and virtually maintenance-free single-parameter sensor (SPS) for measuring nitrate (NO3-, NO3-N) Slim design (Ø 48.3 mm) for observation wells with minimum 3“diameter High measuring accuracy, drift-free Available in different measuring ranges up to max. 0-266 mg/L NO3- Made of 1.4571 stainless steel Output: RS485 (SHWP, Modbus RTU) to connect with SEBA data loggers Benefits 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 wiper additionally ensures that the measuring windows are free from unwanted fouling.