STAR-tank is a radar based tank level sensor that mounts at the top of the tank.
- Operates directly through non-metalic tanks
- In metal tanks a hole is cut and an SAE 5 holt bolt pattern used (industry standard)
- Accurate to 1mm
- Operates in Black and Grey Water. It is not affected by foam or gasses
- This model is battery operated with a taget 3 year life.
- Unit has "Long Range Bluetooth" that we have tested to 10m line of sight and 40m through metal layers in a typical van build.
Pic Shows: Safiery STAR-Tank Radar Sensor with Long Range Bluetooth Battery Operated in position on a Cassette Toilet Canister
This Cassette Toilet by Dometic has a recess under the handle that can accomodate STAR-Tank.
STAR-tank is a radar tank level sensor and operates directly through plastic, ABS, polycarbonate and other similar materials.
STAR-tank can read the height even if uneven with solids and give a reliable reading.
In the victron Cerbo GX, Tank alarms can be set.
Simply glue (optional supply) the aluminium base collar onto the plastic. The Sensor and top of the housing screws into the base collar.
Then when emptying the tank, STAR-tank will just sit in place.
Pic Shows: Safiery STAR-Tank Radar Sensor with Long Range Bluetooth Battery Operated
in position on a Nature's Head Composting Toilet.
This Composting Toilet by Nature's Head has a supporting structure internally that can accomodate STAR-Tank.
STAR-tank is a radar tank level sensor and operates directly through roto-molded plastics, other plastic, ABS, polycarbonate and other similar materials.
STAR-tank can read the height even if uneven with solids and give a reasonable reading.
In the Victron Cerbo GX, Tank alarms can be set.
Simply bolt the aluminium base collar to the structure. (can not glue reliably to roto-molded plastics) and the stainless steel bolts are an optional supply. onto the plastic. The Sensor and top of the housing screws into the base collar.
Then when emptying the tank, STAR-tank will just sit in place.
Non invasive tank level sensors have been limited to Ultrasonic up til now. Ultrasonic sensors operate at around 100kHz. If under the tank have the signal may be blocked by solids or material in the water. If above the tank, they are susceptible to foam and general interference from reflection. They are just not suitable for Black Water or Grey Water.
Phased Coherent radar operates at 60gHz and penetrates foam with great accuracy. Up until now, Radar has been an expensive choice and used in very high value applications. But the introduction of Phased Coherent Radar to EV's opened the door for inexpensive tank sensor applications.
In pulsed coherent radar, a series of short-duration radio frequency pulses are transmitted towards the water line from above. These pulses are reflected back and received by the radar system's antenna. The received signals are then processed and analyzed to determine the depth.
The term "coherent" refers to the radar system's ability to maintain a constant phase relationship between the transmitted and received signals. This coherence allows for more accurate measurements and improved signal processing techniques, such as coherent integration, which enhances the radar's sensitivity and range resolution.
Pulsed coherent radar systems are commonly used in various applications, including military surveillance, air traffic control, weather monitoring, and automotive radar systems. They offer advantages such as high accuracy, long-range capabilities, and the ability to distinguish multiple targets in close proximity.
Video Showing Phased Coherent Radar raw signal
and corresponding tank level
as sensor is moved above water.
This is the most advanced software development we have developed as there are 3 independent IC's. fresh libraries had to be created.
Specifications
This battery powered sensor:
- Battery 2744
- Bluetooth 5.3 Adv Output ONLY
- Deadband 30mm
- Max Depth 2000mm
- Repeatability 1mm
ETSI
Safiery declares that this sensor is compliant with the European commission radio equipment directive 2014/53/EU article 3.1 and 3.2.
Mounting
The base of the Sensor has 2 sets of holes:
- SAE 5 bolt hole
For Plastic Tanks:
- Glue Sensor to top of tank. The SAE bolt holes form the basis for the bonding.
Cable Length:
- No Cable. It is Battery powered and Bluetooth
Connections:
- No Connections
Simple Calibrations:
- Calibration needed from Display