Part Numbers
RXW-WL-900
•RXW-WL-868
•RXW-WL-922
•RXW-WL-921
HOBOnet Water Level Sensor Interface
A wireless sensor interface that works with the HOBOnet system for remote water level monitoring.
$300.00 USD
The HOBOnet water level sensor interface features a pre-configured, easily deployed wireless sensor that communicates accurate, reliable water level data directly to a HOBO RX3000 or HOBO MicroRX station, the core component of the HOBOnet remote monitoring system.
Important Information
A complete system requires at least one HOBOnet Water Level Sensor, a direct read cable, and a HOBO RX3000 Remote Monitoring Station and HOBOnet Wireless Manager (or a HOBO MicroRX Station with an integrated HOBOnet Wireless Manager). HOBOnet Wireless Repeaters (RXW-RPTR-xxx or RXW-RPTR-B-xxx) can be added to extend the range.
Compatible with
Overview
The HOBOnet water level sensor interface features a pre-configured, easily deployed wireless sensor that communicates accurate, reliable water level data directly to a HOBO RX3000 or HOBO MicroRX station, the core component of the HOBOnet remote monitoring system.
HOBOnet is a cost-effective, scalable, user-friendly wireless sensor network that lets you streamline data retrieval by effortlessly monitoring multiple wells with a single cellular device. Data is accessed from anywhere, at any time, through the customizable dashboard in HOBOlink, Onset's innovative cloud software platform – eliminating the need for frequent site visits that are both time-consuming and costly. HOBOlink also sends automatic, real-time text/email notifications to alert you of any sensor or system alarms, providing the insights you need to make informed decisions, react quickly to stay ahead of issues, and ensure compliance.
Other key benefits:
- User-friendly setup process
- A proven water level sensor for accurate, reliable readings
- Rechargeable batteries and built-in solar panel eliminate downtime
- Real-time insights via customized dashboards in HOBOlink, leaving delays in the past
- No data loss due to user error, with temperature-compensated pressure readings for accurate, reliable information
- HOBOlink cloud dashboards for in-depth data analysis and smarter decision-making
- Kevlar-reinforced cable with integrated strain relief mechanism
Features
Sensor Features
- Non-vented design reduces maintenance
- Durable, ceramic sensor can withstand freezing
- 3-point NIST-traceable calibration certificate
Wireless Features
- Sub-GHz wireless mesh self-healing technology for expansive coverage
- 450 to 600 meter (1,500 to 2,000 feet) wireless range and up to five hops
- Up to 50 wireless sensors or 336 data channels per one HOBO RX station
- Simple button-push to join the HOBOnet wireless network
- Onboard memory to ensure no data loss
- Powered by rechargeable AA batteries and built-in solar panel
Configure Sensor
Specifications
Wireless Mote
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-25° to 60°C (-13° to 140°F) with rechargeable batteries-40° to 70°C (-40° to 158°F) with lithium batteries
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12.6 mW (+11 dBm) non-adjustable
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Reliable connection to 457.2 m (1,500 ft.) line of sight at 1.8 m (6 ft.) highReliable connection to 609.6 m (2,000 ft.) line of sight at 3 m (10 ft.) high
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IEEE 802.15.4
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RXW-WL-900: 904–924 MHzRXW-WL-868: 866.5 MHzRXW-WL-921: 921 MHzRXW-WL-922: 916–924 MHz
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OQPSK (Offset Quadrature Phase Shift Keying)
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Up to 250 kbps, non-adjustable
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<1%
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Up to 50 wireless sensors or 336 data channels per one HOBO RX station
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1 minute to 18 hours
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4 (Water Level, Differential Pressure, Water Temperature, Barometric Pressure)
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Two AA 1.2V rechargeable NiMH batteries, powered by built-in solar panel or two AA 1.5 V non-rechargeable lithium batteries for operating conditions of -40 to 70°C (-40 to 158°F)
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With NiMH batteries: Typical 3–5 years when operated in the temperature range -20° to 40°C (-4°F to 104°F) and positioned toward the sun, operation outside this range will reduce the battery service life.With non-rechargeable lithium batteries: 1 year, typical use
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16 MB
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Interface Connector Diameter: 25.4 mm (1 inch)Cable length: 1.83 m (6 ft)Mote: 16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 inches)
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229 g (8.08 oz)
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Sensor: Polycarbonate housing encasing epoxy sealed circuit boardCable: PolyurethaneMote: PCPBT, silicone rubber seal
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Mote: IP67, NEMA 6
Operating Temperature Range
Radio Power
Transmission Range
Wireless Data Standard
Radio Operating Frequencies
Modulation Employed
Data Rate
Duty Cycle
Maximum Number of Motes
Logging Rate
Number of Data Channels
Battery Type / Power Source
Battery Life
Memory
Dimensions
Weight
Materials
Environmental Rating
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Water Level Sensor
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* Water Level Accuracy: With accurate reference water level measurement, known water density, & a stable temp environment. System Water Level Accuracy equals the sum of the Barometric Water Level Accuracy plus the selected sensor end Water Level Accuracy.** Raw Pressure Accuracy: Absolute pressure sensor accuracy includes all sensor drift, temperature, and hysteresis-induced errors.***Changes in Temperature: Allow 20 minutes in water to achieve full temperature compensation of the pressure sensor. Can be up to 0.5% of additional error due to rapid temperature changes. Measurement accuracy also depends on temperature response time.
See referenced below
Pressure (Absolute) and Water Level Measurements MX2001-01-SS-S and MX2001-01-Ti-S
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0 to 207 kPa (0 to 30 psia); approximately 0 to 9 m (0 to 30 ft) of water depth at sea level, or 0 to 12 m (0 to 40 ft) of water at 3,000 m (10,000 ft) of altitude
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69 to 207 kPa (10 to 30 psia), 0° to 40°C (32° to 104°F)
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310 kPa (45 psia) or 18 m (60 ft) depth
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Typical error: ±0.05% FS, 0.5 cm (0.015 ft) waterMaximum error: ±0.1% FS, 1.0 cm (0.03 ft) water
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±0.3% FS, 0.62 kPa (0.09 psi) maximum error
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<0.02 kPa (0.003 psi), 0.21 cm (0.007 ft) water
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<1 second at a stable temperature
Operation Range
Factory Calibrated Range
Burst Pressure
Water Level Accuracy*
Raw Pressure Accuracy**
Resolution
Pressure Response Time (90%)***
Pressure (Absolute) and Water Level Measurements MX2001-02-SS-S
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0 to 400 kPa (0 to 58 psia); approximately 0 to 30.6 m (0 to 100 ft) of water depth at sea level, or 0 to 33.6 m (0 to 111 ft) of water at 3,000 m (10,000 ft) of altitude
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69 to 400 kPa (10 to 58 psia), 0° to 40°C (32° to 104°F)
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500 kPa (72.5 psia) or 40.8 m (134 ft) depth
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Typical error: ±0.05% FS, 1.5 cm (0.05 ft) waterMaximum error: ±0.1% FS, 3.0 cm (0.1 ft) water
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±0.3% FS, 1.20 kPa (0.17 psi) maximum error
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<0.04 kPa (0.006 psi), 0.41 cm (0.013 ft) water
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<1 second at a stable temperature
Operation Range
Factory Calibrated Range
Burst Pressure
Water Level Accuracy*
Raw Pressure Accuracy**
Resolution
Pressure Response Time (90%)***
Pressure (Absolute) and Water Level Measurements MX2001-03-SS-S
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0 to 850 kPa (0 to 123.3 psia); approximately 0 to 76.5 m (0 to 251 ft) of water depth at sea level, or 0 to 79.5 m (0 to 262 ft) of water at 3,000 m (10,000 ft) of altitude
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69 to 850 kPa (10 to 123.3 psia), 0° to 40°C (32° to 104°F)
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1,200 kPa (174 psia) or 112 m (368 ft) depth
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Typical error: ±0.05% FS, 3.8 cm (0.125 ft) waterMaximum error: ±0.1% FS, 7.6 cm (0.25 ft) water
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±0.3% FS, 2.55 kPa (0.37 psi) maximum error
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<0.085 kPa (0.012 psi), 0.87 cm (0.028 ft) water
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<1 second at a stable temperature
Operation Range
Factory Calibrated Range
Burst Pressure
Water Level Accuracy*
Raw Pressure Accuracy**
Resolution
Pressure Response Time (90%)***
Pressure (Absolute) and Water Level Measurements MX2001-04-SS-S and MX2001-04-Ti-S
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0 to 145 kPa (0 to 21 psia); approximately 0 to 4 m (0 to 13 ft) of water depth at sea level, or 0 to 7 m (0 to 23 ft) of water at 3,000 m (10,000 ft) of altitude
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69 to 145 kPa (10 to 21 psia), 0° to 40°C (32° to 104°F)
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310 kPa (45 psia) or 18 m (60 ft) depth
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Typical error: ±0.075% FS, 0.3 cm (0.01 ft) waterMaximum error: ±0.15% FS, 0.6 cm (0.02 ft) water
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±0.3% FS, 0.43 kPa (0.063 psi) maximum error
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<0.014 kPa (0.002 psi), 0.14 cm (0.005 ft) water
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<1 second at a stable temperature
Operation Range
Factory Calibrated Range
Burst Pressure
Water Level Accuracy*
Raw Pressure Accuracy**
Resolution
Pressure Response Time (90%)***
Barometric Pressure (RXW-WL-xxx)
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66 to 107 kPa (9.57 to 15.52 psia)
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-20 to 50°C (-4 to 122°F)
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±0.2 kPa (±0.029 psi) over full temperature range at fixed pressure; maximum error ±0.5% FS
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Typical error: ±0.075% FS, 0.3 cm (0.01 ft) waterMaximum error: ±0.15% FS, 0.6 cm (0.02 ft) water
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<0.01 kPa (0.0015 psi)
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<1 second at stable temperature
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<0.01 kPa (0.0015 psi) per year
Operation Range
Temperature Calibrated Range
Accuracy
Water Level Accuracy*
Resolution
Response Time
Stability (Drift)
Temperature Measurements (All Sensor End Models MX2001-0x-SS-S and MX2001-0x-Ti-S)
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-20° to 50°C (-4° to 122°F)
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±0.44°C from 0° to 50°C (±0.79°F from 32° to 122°F)
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0.1°C at 25°C (0.18°F at 77°F)
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5 minutes in water (typical)
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0.1°C (0.18°F) per year
Operation Range
Accuracy
Resolution
Response Time (90%)
Stability (Drift)
Compatible items
Web-based Monitoring Systems - via remote communication
Well Caps
Batteries
Grounding Wires
Communication Cables
Communications
Replacement Parts
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