INFINITY-EPSA is a compact, high-precision data logger with wireless communication availability. No special cable is required for connecting with a PC. It is not necessary to open our instruments anymore for setting up observations and retrieving data. The instruments operate with either AA alkaline batteries or lithium batteries, making it much easier for customers to find the batteries locally. It is also equipped with LEDs representing the status of the instruments.
Optical Dissolved Oxygen Logger with Wiper:
EPSA-RINKO
EPSA-RINKO is an autonomously deployable data logger for long-term DO measurements. In order to protect the sensing foil against accumulating bio-fouling, the instrument has a mechanical wiper to sweep the optical window. The sensor is coated with photostimulable phosphor (PSP) on the outside of the pressure-resistant acrylic optical window, measuring the phase difference between phosphorescent time lengths. The excitation blue LED pulse generates a red phosphorescence pulse, which in turn has an inverse correlation with the oxygen partial pressure in the water (DO concentration). Phosphorescent time lengths under oxygen-free conditions are long. However, under high DO concentration conditions, the time length shortens. Since the method does not consume oxygen, there is no need for stirring.
Conductivity and Temperature Logger with Wiper:
EPSA-CTW
EPSA-CTW is an accurate conductivity and temperature meter making use of 7-electrode sensor with an enhanced double wiper to avoid bio-fouling. This 7-electrode generates an electric current only inside of the conductivity cell, minimizing external influences improving data quality. Thus, precise salinity measurements are possible under bio-foul forming conditions. The compact design is suitable to be deployed/integrated with various sites/platforms.
Chlorophyll and Turbidity Logger with Wiper:
EPSA-CLW
EPSA-CLW is an autonomously deployable data logger for long-term chlorophyll and turbidity measurements. The light sources (LEDs) of chlorophyll and turbidity sensors are highly stable, minimizing the change over time. The instrument has a mechanical wiper that periodically sweeps the optical window to prevent biological growth on it. The turbidity sensor has a good correlation with SS (Suspended Solid) over the range. EPSA-CLW provides Highly accurate and long-term stable chlorophyll and turbidity data in oceans, rivers and freshwater.
Wide Range Turbidity Logger with Wiper:
EPSA-Turbi
EPSA-Turbi is a reliable sensor for long time monitoring of extremely turbid waters. The dual sensors enables both medium (0 to 1,000 FTU) and high (0 to 100,000 ppm) turbidity measurements. With its mechanical wiper, the sensor surface is kept clean throughout the long-term observation period. This instrument is equipped with temperature and pressure sensor as standard set-up which is useful on focusing on tidal events and surrounding water masses.