OXYBase WR-RS485 and WR-RS485M sensors for measuring gaseous and dissolved oxygen

Description

OXYBase from PreSens connects directly to the control unit. It combines an optical sensor and an electro-optical module in one probe. OXYBase is built into a 12 mm diameter stainless steel housing. Temperature compensation for oxygen measurements is implemented using a built-in temperature sensor. It uses RS485 as its digital interface (OXYBase WR-RS485 = Patented by PreSens, OXYBase® WR-RS485M = Modbus RTU).

A serial communication protocol is offered for data exchange between OXYBase and a PC or other host device. PreSens EOM-STS software is used for operation and configuration.

Small external dimensions (diameter: 12 mm, length 106 mm) and low energy consumption allow easy integration into individual monitoring and control systems.

The devices are available with different cable lengths, the sensor is built into a removable sensor cap (OEC). These interchangeable caps are offered in various versions for specific requirements (fast response time, food safety, for measurements in aggressive media). The sensor is not autoclavable.

Advantages of WR-RS485 and WR-RS485M oxygen sensors

• Maximum measuring range 0 - 100% O2 (optimal 0 - 50% O2), detection limit 0.03% O2 / 20 ppb.
• No polarization time
• Easy integration
• Built-in temperature sensor for temperature compensation (not suitable for monitoring process temperature)
• Low power consumption
• Waterproof

Areas of use

• Oxygen Control in Fish Farming: OXYBase is a solution for the control of dissolved oxygen in aquaculture. Rugged sensors connect to control units to ensure ideal water conditions, which in turn enhances the yield. OXYBase® is very easy to maintain as a used sensor can be easily replaced by simply replacing the OEC (oxygen cap) on the probe tip.
• Biological and Environmental Research: OXYBase® are long-term stable sensors that can be implanted into soil or other samples for extended periods of time. They are ideal for monitoring soil aeration processes that are critical to plants, or measuring dissolved oxygen in water samples.

Specifications:

• Measuring range (gaseous and dissolved O2): Optimal: 0 - 50% O2, 0 - 500 hPa; Max .: 0 - 100% O2, 0 - 1000 hPa
• Measuring range (dissolved O2): Optimum: 0 - 22.5 mg/L Max: 0 - 45.0 mg/L
• Detection limit: 0.03% O2, 0.3 hPa / 0.020 mg/L
• Response time (t90):
• Compatibility: aqueous solutions, ethanol, methanol, cleaning agents containing ClO2 at room temperature.
• No cross-sensitivity to: pH 1-14, CO2, H2S, SO2, ionic compounds
• Cross-sensitivity to: organic solvents such as pure acetone, toluene, chloroform or methylene chloride, chlorine gas
• Calibration: two-point calibration in an oxygen-free environment (e.g. nitrogen 5.0, 1% sodium sulfite solution) and in an air-saturated environment (20.9% oxygen, air-saturated water)
• Stability of storage of the sensor cap: 5 years when stored at room temperature, in dry conditions and in the dark.
• Temperature sensor: NTC
• Temperature specifications Accuracy: <± 1 ° C
• Power supply: DC 5-30V
• Power consumption in active mode: Max. 1 watt
• Standby power consumption: <0.15W
• Operating temperature range: Optimal: from 0 °C to + 40 °C; Max: -10 °C to + 70 °C
• Dimensions: Probe length: 106 mm, diameter 12 mm; different cable lengths available
• Probe body material: SUS 316 L stainless steel
• Weight: 100g