YSI Amazon Water Level Bubbler

The YSI Amazon Water Level Bubbler is a smart gas purge system built with communication and ease of setup in mind. The Amazon Water Level Bubbler Systems rugged design was developed for hydrologists and water professionals to provide long-term accurate and repeatable level readings. It can be used as a stand-alone unit or sensor with a full suite of communication protocols including SDI-12, MODBUS via RS-485 or TCP, and 4-20mA. The Amazon requires no special software and is easily configured with an optional display and or web browser GUI. WaterLOG's team of professionals have been providing bubbler support for over 20 years.

  • Features
  • Specifications
  • Firmware
  • Documents

Designed with simplicity in mind, the Amazon bubbler is the ideal system for long-term, water level monitoring sites. It can be used as a stand-alone system with internal data storage, or as a sensor connected to any manufacturers data logger. Easily configure and collect data using the browser-based graphical user interface with all standard web browsers on PCs, tablets and smart phones. It's rugged build, and technologically advanced system makes the Amazon Bubbler an attractive solution for real-time monitoring and data collection.

The Amazon provides a continuous air bubble and an integrated pressure sensor that measures the pressure required to push the bubble out of the orifice line, which is the line pressure. The line pressure value measured in psi is then converted into the desired units of measurement to represent water level.

Stand Alone System
The Amazon can be used as a sensor connected to other recorder devises; data logger, PLC, RTU, etc. However, at a substantial cost savings, it can also be used as a stand-alone device, eliminating the need of an external recording device. Data values recorded by the Amazon can be copied directly to a USB Flash Drive and imported to the PC.

Browser Based Software
The Amazon's initiative, easy to use software is browser based, which eliminates the need for proprietary software being installed on the PC. Access the Amazon software from any internet device that has Wi-Fi or USB connection functionality.

Key Pad Display
As an optional interface, the Amazon uses a Sharp® Memory LCD display. This provides the convenience of continuous display of data with the cost savings of low power usage. The display is provided as an option to the Amazon. For applications where an external display is not required, the Amazon can be purchased without the display.

Multiple communication options are available to insure that the Amazon can interface with any data logger, PLC, or RTU. These options include; SDI-12, MODBUS (over IP or RS-485), and 4 to 20 mA. Via the Ethernet port, the Amazon can push data over the internet directly to Storm Central, our data hosting solution. *Cell modem currently under development.

Measurement Range
Three range options are available to provide the highest measurement accuracy. With an industry leading accuracy of 0.02% of Full Scale; the 0 to 10 m range provides an accuracy of ±2 mm, the 0 to 20 m range has an accuracy of ±4.25 mm, and the 0 to 35 m range has an accuracy of ±7 mm.

Accuracy — Pressure Less than or equal to 0.02% of full scale output (FSO) over temperature range
Bubbler Gas Delivery Type Microprocessor controlled unit
Bubbler Gas Flow Technology Constant mass Technology
Bubbler Gas Flow Control Bubble rate is user programmable from 30 to 120 bubbles per minute based on 1/4 in. (6.35 mm) tubing.
Auto zero, error controlled bubble rate
Purge Pressure Level User Selectable 30 PSI to 90 PSI
Purge Function Options Manual
SDI driven purge
Purge sustain option (10-30S)
Automatic / programable
Compressor Type Piston Compressor
Compressor Operation Low duty cycle (7 hours typical runtime per year at 60 bubbles per minute into 12 ft. (3.65 m))
Purges not included
Pressure Overload Less than 2 times the rated pressure
Media Capability Non-corrosive dry gases only
Rating NEMA 4 enclosure
Pressure Range Depth Accuracy
0 to 15 PSI 0 to 34.6 ft. (10.54 m) ±0.007 ft. (2.1 mm)
0 to 30 PSI 0 to 69.20 ft (21 m) ±0.014 ft. (4.26 mm)
0 to 50 PSI 0 to 115.35 ft (35.16 m) ±0.023 ft (7.11 mm)
Housing Size 12.25 in. L x 8.75 in. W x 5.75 in. H
(311.15 mm L x 222.25 mm W x 146.05 mm H)
Housing Weight 12.0 lbs (5.44 kg)
Housing Material Fiberglass
Atmospheric Vent Material Sintered bronze, #10-32
Voltage Output 10.0 to 16.5 V DC
Current* Standby: 6mA
Compressor Active, No Pressure: 3 A
Compressor Active, Full Pressure: 6 A
Startup Surge Required: 15 A
Quick Connect Phoenix Connectors 2-position quick connect for power
5-position quick connect for SDI-12, 4 to 20 mA, and RS-485
Pressure Inlet 1/8 in. (3.81 cm) female NPT

*Based on a 60 bubbles/min flow rate with a 15 min measurementcycle and a 1 purge/day frequency. Average active current 20mA

SDI-12 Baud Rate: 1200
Protocol: SDI-12 V1.3, 7-bit even parity, 1 stop bit
Output Voltage Level: Minimum high level: 3.5 volts; Maximum low level: 0.8 volts
Response Time: 8- second measurement sequence (programmable)
RS-485 Interface Protocol: RS-232, 8bit, No Parity, 1 stop bit
Baud Rate: 9600
4-20mA Output Type: 4-20mA, optically isolated .75 ft (2.67 m)
Loop Voltage: 8.0V min 35V max
Resolution: 16 bit resolution ±-0.24uA (16-bit DAC)
Accuracy: 0.075% max error
General Specifications
Operating Temperature -40 ° to +60 ° C
Compensated Range -40 ° to +60 ° C
Storage Temperature -40 ° to +80 ° C
Warranty The WaterLOG® Amazon Bubbler is warranted against defects in materials and workmanship for twenty-four months from date of shipment.

Finalized firmware for this product has not been released.

Preliminary Firmware is available from waterlog.com.