Our monitoring systems work with a wide range of probes and sensors, including most configurable 4-20mA or mV analog sensors, and most discrete output sensors or switches. Here are the probes and sensors we use and recommend:
| Probe Options | Description | Specs and Resources | |
|---|---|---|---|
Dissolved Oxygen |
InWater Optical DO Probe | Uses fluorescence quenching based on light and sensor interaction. Units: %Saturation, mg/L (DO), and °C (Temperature). V1 – the original InWater Optical probe based on RDO Core technology. V2 – released in 2025, using the same measurement principle but incorporating upgraded components for improved operation. |
More info |
| OxyGuard Commander DO Probe | Uses a galvanic cell, where oxygen reacts electrochemically to produce a signal. Units: %Saturation, mg/L (DO), and °C (Temperature). | Spec sheet | |
| OxyGuard Stationary DO Probe | Uses a galvanic cell, where oxygen reacts electrochemically to produce a signal. Units: %Saturation or mg/L (configured by manufacturer). | Spec sheet | |
TGP |
InWater Total Gas Pressure Probe (TGP) | Measures TGP and barometric pressure (BP; mmHg) for a calculated value of TGP (%SAT) and Delta P. Units: %Saturation (TGP) and °C (Temperature). | Spec sheet More info |
CO2 |
OxyGuard CO2 Analyzer | Measures dissolved CO2 through a gas-permeable membrane and internal chemical reaction. Includes CO2 probe and transmitter. Units: mg/L (CO2). | Spec sheet |
pH |
Sensorex Differential pH | Uses differential measurement technology, with two internal glass electrodes and a third metal ground electrode, which enhances stability, accuracy, and extends sensor lifespan. Units: pH. | Spec sheet |
ORP |
Sensorex Differential ORP | Uses the same technology as the pH probe but with a noble metal electrode to detect the redox potential of the water. Units: mV (ORP). | Spec sheet |
Salinity |
OxyGuard Salinity | Measures conductivity and compensates for temperature to derive salinity. Units: ppt (Salinity). | Spec sheet |
Temperature |
OxyGuard Precision Temperature | Uses a temperature-sensitive element and built-in transmitter to provide a 4-20 mA signal for precise monitoring. Units: °C. | Spec sheet |
Level |
Float Switch | Uses a float which rises or falls with liquid, triggering a switch for level detection. Units: 0/1 (high/low). | More info |
| Hydrostatic Level Sensor | Measures hydrostatic pressure exerted by the liquid column to determine water level. Units: m. | Contact us for options | |
Flowrate |
Paddle Wheel Flow Sensor | Detects flow rate by measuring the rotational speed of a paddle wheel in the water. Units: lpm or gpm. | Contact us for options |
| Magmeter Flow Sensor | Measures flow using electromagnetic induction in conductive liquids. Units: lpm or gpm. | Contact us for options | |
| Ultrasonic Flowmeter | Uses sound waves to calculate flow rate based on time differences. Units: lpm or gpm. | Contact us for options | |
Pressure |
Pressure Transmitter | Measures pressure via diaphragm deformation, converting it into a 4-20 mA signal. Units: psi. | Contact us for options |
