Digital communications protocol interface sensors protected from sustained immersion in liquid to prevent damage to internal sensor components, for measuring liquid level and converting it to a reading which can be transmitted using a digital communication link to other instrumentation.
Products
DCL 531 Modbus RTU RS 485 Submersible Stainless Steel Liquid Level Sensor - Digital submersible stainless steel liquid level sensor with a Modbus RTU protocol RS 485 serial bus interface.
DCL 571 RS485 Modbus RTU Submersible 22mm dia Groundwater & Wastewater Level Probe - 22mm diameter digital interface submersible liquid level probe with RS 485 Modbus RTU protocol serial bus communications for installing in 1" diameter tubes to measure groundwater level and measuring wastewater with nose cone removed.
DCL 551 RS485 Modbus RTU Submersible Low Range Fuel, Oil & Wastewater Level Probe
S12C SDI-12 Seawater Pressure & Temperature Transducer- S12S SDI-12 Coms IP68 Pressure and Temperature Sensor
36XW Digital Submersible Hydrostatic Level Sensor
Application Specified Products
- Low power consumption SDI-12 lake water level sensor - Lake water level sensor for immersed installations to measure the quantity of water in a lake with a low power consumption SDI-12 interface.
- Irrigation water channel and storage dam 10m range SDI-12 submersible level sensor - A low powered telemetry system water level sensor for submerging in irrigation water channels or storage dams and measuring the depth over a range of 0 to 10m from the nose cone, and sending the reading via a SDI-12 serial interface through the submersible cable electrical connection.
- 40m RS485 Modbus RTU submersible borehole pump drawdown depth sensor - A submersible digital water depth sensor for submerging in a borehole and measuring the pump draw down depth over a range of 0 to 40m from the nose cone, and sending the corresponding RS485 Modbus RTU protocol coms through the submersible cable electrical connection.
- Evaporation pan SDI-12 environmental data interface water level sensor - SDI-12 data interface hydrostatic water level sensor for monitoring the depth of water in a Class A evaporation pan.
SDI-12 near shore tide gauge submersible 20m level probe - 20 metre range level probe with an SDI-12 protocol serial digital interface for submerging near to the shore to monitor tidal changes.
SDI-12 interface, 2 bar absolute, submersible water level sensor - The S12C is a submersible level probe with a SDI-12 protocol signal interface and has the option to measure absolute pressure rather than venting to air pressure above the water surface.- Modbus RTU RS485 submersible borehole water level sensor - Modbus RTU communications protocol RS485 serial interface, small diameter for water borehole immersion, hydrostatic pressure level sensor.
10 metre submersible water depth and temperature transducer with USB digital connection - USB interface IP68 pressure sensor to accurately indicate the depth and temperature of fresh water up to 10 metres water depth.- Stilling well 3ft range SDI-12 interface lake water level sensor - A data acquisition compatible level sensor for submerging in a lake stilling well and measuring the depth over a range of 0 to 3ft from the nose cone, and sending the corresponding reading via an SDI-12 serial interface through the submersible cable electrical connection.
- Roadside creeks & streams flood SDI-12 coms water level sensor - This low power consumption SDI-12 interface sensor will measure the water level of roadside creeks and streams to sense the level of flooding.
A digital interface provides a way to gather readings from multiple sensors with less wiring and more measurement data without any signal losses due to cable interference or poor calibration settings.
Each digital sensor can be configured with a unique address so that multiple sensors can be connected to the same communication link, and polled individually as part of a network to retrieve measurement data.
Digital communications can provide a lot more information about the measurement than a straightforward analogue output signal. In addition to the reading, the associated measurement units for the reading, the exact reading taken time, environmental temperature, serial number and last calibration date can also be sent if the sensor firmware includes those parameters.
There is no need to calibrate a digital sensor when connecting it to other instrumentation, since there are no signal settings necessary between the two devices. Also since a digital readings is either received in full or not at all, the reading cannot be modified after transmission due to RFI or other interference that affects analogue signal output sensors.
Submersible sensors are made from materials that are selected to prevent corrosion over long periods of continuous immersion. Where dissimilar materials need to be joined together, double or triple elastomer ‘O’ rings are utilised to provide a high integrity liquid tight seal to a rated depth. Signal cables are joined to the top of the sensor housing using either a moulded or compression gland with internal ‘O’ ring seals or a special submersible connector to allow removal or replacement.
A liquid level sensor is an instrument for measuring the height of a liquid and converting it to a digital reading, which is then transferred using a specific communications protocol to other instrumentation with compatible digital communication interfaces.