AWQ Water and Hydrological Sensors

About the Sensors

The sensors range comprises:

• AWQ-pH pH/Redox/Temp sensor designed to perform under hard conditions, from pure mountain water with conductivity as low as 20 μS/cm, lakes and rivers (100 – 2000 μS/cm), seawater with conductivities of 50 mS/cm, to wastewater with conductivity higher than 200 mS/cm.
• AWQ-NTU sensor is an optical sensor for the measurement of Nephelometric Turbidity, based on IR nephelometry/850 nm.
• AWQ-DO sensor measures dissolved oxygen in water using an optical luminescence measurement principle.
• AWQ-CTZN Inductive Conductivity/Salinity sensor measures conductivity, salinity and temperature in water.
• AWQ-C4E is for measuring conductivity, salinity and temperature in water uses 4 electrodes for accurate measurements.

AWQ-pH pH/Redox/Temp

The AWQ-pH pH/Redox/Temp sensor stores calibration and history data within the sensor and features long-life Plastogel® reference technology, increasing the lifetime of the probe and reducing the need to refill. Providing Modbus RS485 and SDI-12, the AWQ-pH sensor can be connected to most commonly used data collection devices.

AWQ-NTU Optical Sensor for Nephelometric Turbidity

The AWQ-NTU measurement principle is based on IR nephelometry/850 nm. The sensor can be calibrated with a formazine standard solution. The AWQ-NTU sensor uses low-cost optical technology, requiring very little maintenance and no consumables. The sensor can be connected to any types of transmitters, display units, controllers, or data loggers with Modbus RS-485 or SDI-12 inputs. The optical sensor saves its calibration data for better measurement management. All data concerning calibration, history, users and measurements are processed within the AWQ-NTU sensor and transmitted via RS-485 or SDI-12.

Applications include:

• Urban wastewater treatment (inlet/ outlet controls)
• Sanitation network
• Industrial effluent treatment
• Surface water monitoring
• Drinking water

AWQ-DO Sensor for Dissolved Oxygen

Measuring dissolved oxygen in water, the OPTOD sensor uses an optical luminescence measurement principle.

With two versions, stainless steel and titanium, for different conditions:

• The OPTOD stainless steel sensor is used for measurement of urban wastewater and industrial effluent treatment, as well as surface water monitoring.
• The titanium version is designed for seawater and other corrosive environment.

Both versions share the same RS485 and SDI-12 signal output options, as well as the Aqualabo stored calibration data system enabling simple change over for maintenance purposes.

Optical Technology

The AWQ-DO (Optical Dissolved Oxygen technology) is based on luminescent optical technology. The AWQ-DO sensor is in compliance with the ASTM International Method D888-05. AWQ-DO does not require calibration, and thanks to an ultra low power technology, the AWQ-DO sensor meets the demands of field work, short and long term installation. Without oxygen consumption, this technology allows you to accurate measure in all situations, especially in very low oxygen concentrations.

Digital Technology

The AWQ-DO sensor stores calibration and history data within the sensor. This allows for a plug and play system without the need for re-calibration.
Thanks to Modbus RS485 and SDI-12, the AWQ-DO can be connected to most commonly used devices.

Construction

Compact, strong and light, the sensor can be used for portable measurement, or installed for fixed/permanent use.
Body in Stainless steel 316 L (passivation treated) or in Titanium for applications in corrosive environments.

Specifications for AWQ Range of sensors

Replacement consumable parts are available to maintain the optimal performance of the AWQ-pH sensor and the AWQ-DO sensor:

• AWQ-DO Replacement Disk: The average lifetime of the AWQ-DO-DISK is of 2 years. In case of deterioration of the DO-DISK or of difficulty on the processes of calibration, the DO-DISK will need be to be changed.
• AWQ pH-ORP Sensor Cartridge: Replacement cartridge for pH-ORP Sensor