HOBO MicroRX Water Level Station
The MicroRX Water Level Station uses HOBOlink, Onset’s cloud-based software to access data with a web browser or mobile device. LEARN MORE.
Overview
The HOBO MicroRX Water Level Station is a cellular, web-enabled water level monitoring solution for stormwater, floodwater, irrigation, hydrologic, and environmental applications. Pre-programmed water flow formulas for select weirs, flumes, and a stage discharge table result in an easy and intuitive configuration.
New water flow and accumulated rainfall calculations, which are performed directly on the station at time of measurement, trigger immediate notifications of critical water level conditions.
The compact and durable station, together with the non-vented water level sensor, enables harsh condition deployments and reliable monitoring. The optional integrated solar panel or battery power, with a wide range of plug-and-play smart sensors, supports flexible environmental monitoring.
Highlighted Features
- Station-side alarms for water flow and accumulated rainfall triggered at time of measurement
- Non-vented ceramic water level sensor with a choice of four ranges
- Interchangeable, Kevlar-reinforced water level sensor cables
- Integrated barometric pressure sensor
- Compact IP66/NEMA 4X enclosure
- Built-in LCD confirms proper setup and operation
- Two power options:
- Integrated 1.7 W solar panel with rechargeable battery pack
- 5 W and 15 W external solar panels can be added (RX2104 only)
- User-replaceable AA lithium batteries
- Integrated 1.7 W solar panel with rechargeable battery pack
- Inputs for five plug-and-play smart sensors
- Up to 10-minute connections rates via 4G cellular data plans
- Cloud-based monitoring and data access through HOBOlink
- Available with stainless steel or titanium sensor ends
- 3-point NIST-traceable calibration certificate included for the water pressure sensor
In what environment does this data logger operate?
This data logger operates in an underwater environment.
What measurements does this data logger support?
The RX2100-WL data logger supports the following measurements: Absolute Pressure, Barometric Pressure, Evapotranspiration, Leaf Wetness, Light Intensity, PAR, Pulse Input, Rainfall, Relative Humidity, Soil Moisture, Temperature, Water Level and Wind
The HOBO MicroRX Water Level Station is a cellular, web-enabled water level monitoring solution for stormwater, floodwater, irrigation, hydrologic, and environmental applications. Pre-programmed water flow formulas for select weirs, flumes, and a stage discharge table result in an easy and intuitive configuration.
New water flow and accumulated rainfall calculations, which are performed directly on the station at time of measurement, trigger immediate notifications of critical water level conditions.
The compact and durable station, together with the non-vented water level sensor, enables harsh condition deployments and reliable monitoring. The optional integrated solar panel or battery power, with a wide range of plug-and-play smart sensors, supports flexible environmental monitoring.
Highlighted Features
- Station-side alarms for water flow and accumulated rainfall triggered at time of measurement
- Non-vented ceramic water level sensor with a choice of four ranges
- Interchangeable, Kevlar-reinforced water level sensor cables
- Integrated barometric pressure sensor
- Compact IP66/NEMA 4X enclosure
- Built-in LCD confirms proper setup and operation
- Two power options:
- Integrated 1.7 W solar panel with rechargeable battery pack
- 5 W and 15 W external solar panels can be added (RX2104 only)
- User-replaceable AA lithium batteries
- Integrated 1.7 W solar panel with rechargeable battery pack
- Inputs for five plug-and-play smart sensors
- Up to 10-minute connections rates via 4G cellular data plans
- Cloud-based monitoring and data access through HOBOlink
- Available with stainless steel or titanium sensor ends
- 3-point NIST-traceable calibration certificate included for the water pressure sensor
In what environment does this data logger operate?
This data logger operates in an underwater environment.
What measurements does this data logger support?
The RX2100-WL data logger supports the following measurements: Absolute Pressure, Barometric Pressure, Evapotranspiration, Leaf Wetness, Light Intensity, PAR, Pulse Input, Rainfall, Relative Humidity, Soil Moisture, Temperature, Water Level and Wind
Learn MoreTo see the full specifications for this product, please see our product manual found under the documentation tab if available
|
Operating Range |
RX2103: -40° to 60°C (-40° to 140°F) |
|
Smart Sensor Connectors |
5 |
|
Smart Sensor Network Cable Length |
100 m (328 ft) maximum |
|
Smart Sensor Data Channels |
Maximum of 15 (some smart sensors use more than one data channel; see sensor manual for details) |
|
Logging Rate |
1 minute to 18 hours |
|
Time Accuracy |
±8 seconds per month in 0° to 40°C (32°F to 104°F) range; |
|
Battery Type/Power Source |
RX2103: 6 AA 1.5 V lithium batteries or AC power adapter (P-AC-1) |
|
Battery Life |
RX2103 Battery Life: Battery life with daily connections:
Battery life with hourly connections and 1 minute logging:
Note: Deployments in areas with weak cellular strength could reduce battery life. RX2104 Battery Life: Typical 3–5 years when operated in the temperature range -20° to 40°C (-4° to 104°F); operation outside this range will reduce the battery service life. Maximum connection rates with built-in solar panel, in full sun:
Maximum connection rates with external 5W or 15W solar panels:
Battery life without solar recharging, with hourly connections and
|
|
Memory |
16 MB, 1 million measurements, continuous logging |
|
Alarm Notification Latency |
Logging interval plus 2–4 minutes, typical |
|
Enclosure Access |
Hinged door secured by two latches with eyelets for use with user-supplied padlocks |
|
LCD |
LCD is visible from 0° to 50°C (32° to 122°F); the LCD may react slowly or go blank in temperatures outside this range |
|
Materials |
Outer enclosure: Polycarbonate/PBT blend with brass inserts; Interior: Polycarbonate/PBT; Gasket: Silicone foam; Cable channel: Santoprene™ TPE; U-Bolts (not included): Steel with zinc dichromate finish |
|
Dimensions |
19.95 x 13.68 x 7.49 cm (7.85 x 5.39 x 2.95 in.) |
|
Weight |
678 g (23.9 oz) |
|
Mounting |
Optional U-bolts are compatible with masts up to 4.14 cm (1.63 in.) mast diameter; can also be mounted with zip ties or mounted to a flat surface with screws |
|
Environmental Rating |
Weatherproof enclosure, NEMA 4X and IP66 (requires proper installation of cable channel system) |
| Wireless Radio |
GSM/GPRS/EDGE: Quad band 850/900/1800/1900 MHz |
| Antenna |
4G LTE |
|
|
The CE Marking identifies this product as complying with all relevant directives in the European Union (EU) |
|
|
FCC ID QIPPLS62-W, IC ID:7830A-PLS62W |
Water Level Sensor:
Pressure (Absolute) And Water Level Measurements MX2001-01-S and MX2001-01-Ti-S:
|
Operation Range |
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 |
|
Factory Calibrated Range |
69 to 207 kPa (10 to 30 psia), 0° to 40°C (32° to 104°F) |
|
Burst Pressure |
310 kPa (45 psia) or 18 m (60 ft) depth |
|
Water Level Accuracy* |
Typical error: ±0.05% FS, 0.5 cm (0.015 ft) water |
|
Raw Pressure Accuracy** |
±0.3% FS, 0.62 kPa (0.09 psi) maximum error |
|
Resolution |
<0.02 kPa (0.003 psi), 0.21 cm (0.007 ft) water |
|
Pressure Response Time (90%)*** |
<1 second at a stable temperature |
Pressure (Absolute) And Water Level Measurements MX2001-02-S:
|
Operation Range |
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 |
|
Factory Calibrated Range |
69 to 400 kPa (10 to 58 psia), 0° to 40°C (32° to 104°F) |
|
Burst Pressure |
500 kPa (72.5 psia) or 40.8 m (134 ft) depth |
|
Water Level Accuracy* |
Typical error: ±0.05% FS, 1.5 cm (0.05 ft) water |
|
Raw Pressure Accuracy** |
±0.3% FS, 1.20 kPa (0.17 psi) maximum error |
|
Resolution |
<0.04 kPa (0.006 psi), 0.41 cm (0.013 ft) water |
|
Pressure Response Time (90%)*** |
<1 second at a stable temperature |
Pressure (Absolute) And Water Level Measurements MX2001-03-S:
|
Operation Range |
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 |
|
Factory Calibrated Range |
69 to 850 kPa (10 to 123.3 psia), 0° to 40°C (32° to 104°F) |
|
Burst Pressure |
1,200 kPa (174 psia) or 112 m (368 ft) depth |
|
Water Level Accuracy* |
Typical error: ±0.05% FS, 3.8 cm (0.125 ft) water |
|
Raw Pressure Accuracy** |
±0.3% FS, 2.55 kPa (0.37 psi) maximum error |
|
Resolution |
<0.085 kPa (0.012 psi), 0.87 cm (0.028 ft) water |
|
Pressure Response Time (90%)*** |
<1 second at a stable temperature |
Pressure (Absolute) And Water Level Measurements MX2001-04-S and MX2001-04-Ti-S:
|
Operation Range |
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 |
|
Factory Calibrated Range |
69 to 145 kPa (10 to 21 psia), 0° to 40°C (32° to 104°F) |
|
Burst Pressure |
310 kPa (45 psia) or 18 m (60 ft) depth |
|
Water Level Accuracy* |
Typical error: ±0.075% FS, 0.3 cm (0.01 ft) water |
|
Raw Pressure Accuracy** |
±0.3% FS, 0.43 kPa (0.63 psi) maximum error |
|
Resolution |
<0.014 kPa (0.002 psi), 0.14 cm (0.005 ft) water |
|
Pressure Response Time (90%)*** |
<1 second at a stable temperature |
Barometric Pressure (RX2103 and RX2104 station):
|
Operation Range |
66 to 107 kPa (9.57 to 15.52 psia) |
|
Temperature Calibrated Range |
-20 to 50°C (-4 to 122°C) |
|
Accuracy |
±0.2 kPa (±0.029 psi) over full temperature range at fixed pressure; maximum error ±0.5% FS |
|
Water Level Accuracy* |
Typical error: ±0.075% FS, 0.3 cm (0.01 ft) water |
|
Resolution |
<0.01 kPa (0.0015 psi) |
|
Response Time |
<1 second at a stable temperature |
| Stability (Drift) | 0.1°C (0.18°F) per year |
Temperature (Water Level Sensors MX2001-0x-S and MX2001-0x-Ti-S):
|
Operation Range |
-20° to 50°C (-4° to 122°F) |
|
Accuracy |
±0.44°C from 0° to 50°C (±0.79°F from 32° to 122°F) |
|
Resolution |
0.1°C at 25°C (0.18°F at 77°F) |
|
Response Time (90%) |
5 minutes in water (typical) |
| Stability (Drift) | 0.1°C (0.18°F) per year |
* Water Level Accuracy: With accurate reference water level measurement, known water density, and a stable temperature environment. System Water Level Accuracy equals the sum of the Barometric Water Level Accuracy plus the selected sensor 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. There can be up to 0.5% of additional error due to rapid temperature changes.
Measurement accuracy also depends on temperature response time.
1. Choose your station:
3. Water Level Sensors
The following sensors are compatible with the water level stations selected from the Station tab. Please select one sensor and one cable.
Select One Sensor:
Select One Cable:
The 1, 5, 10, 15, 30, and 60 meter cables are typically in stock, while other cables are custom lengths with a 1-2 week lead time.
Mounting:
4. Environmental Sensors
Barometric measurement is built into unit so additional sensor not needed.
Station includes 5 smart sensor inputs and supports up to 15 channels.
5. Accessories
Please review your order:
Estimated Order Total: $0 USD
- HOBO RX2100 MicroRX Station
- Grease packet
- Cable ties
- Screws and washers
- Six AA lithium batteries (RX2103 battery-powered station)
- Battery pack (RX2104 solar-powered station)
The following are associated resources for this product. In general users of this product can gain insight into its possible use by utilizing the resources below. Our user forum can also be a valuable resource for questions, use cases and general feedback. Share with us today, here!
If you have a question that’s not listed below, contact our Sales Application Specialists, who will be happy to help you!
Can I calculate water flow using the HOBO MicroRX Water Level Station?
Yes, the station is configured with pre-installed calculations for V-notch weirs, general flumes (e.g. Parshall, Ramp, and Cutthroat), and a stage-discharge table.
What alarms are available?
The MicroRX Water Level Station has alarms that trigger for accumulated rainfall and water level/flow at time of measurement.
Can I have more than one accumulated rainfall alarm programmed at the same time?
The RX2100 can only have one accumulated rainfall alarm set up at a time.
Can my data be exported to any hydrology software?
Yes, data can already be used with Network for Environment and Weather Applications (NEWA), DataWise, and the Florida Automated Weather Network (FAWN). Integration with Aquarius is coming soon.
How should I mount the water level sensor?
There are multiple ways to mount the water level sensor.
- Suspend the sensor in a 2” well with a dedicated Onset well cap
- Suspend the sensor in larger wells with a reducer to Onset’s well cap, or your own well cap.
- If mounting in a storm sewer, use a PVC pipe with holes and one end resting on the bottom of the catchment and the top secured to the side of the catchment access.
Do I need a well cap?
A well cap will protect your water level sensor from rainfall and debris. It is uniquely designed to keep the water level sensor cable securely in place, which is especially helpful when using longer cables.
Why would I need an additional solar panel if I choose the integrated solar MicroRX Water Level Station?
You may want an additional solar panel to boost power to ensure connectivity at the maximum 10-minute rate. It may also be a good option if your station is not deployed in full sun.
Customers Also Bought
The water level sensor cable provides the connection between the HOBO MicroRX Water Level Station (RX2100-WL) and the water level sensor. Cables can be ordered in lengths from 1 meter to 400 meters for deployment in a wide range of applications. The 1, 2, 5, 10, 15, 30, and 60-meter cable lengths are standard and typically in stock. Custom cable lengths require a lead time of one to two weeks.
PLEASE NOTE: Custom cables are ineligible for return.
2-meter tripod with mast used for mounting loggers and other sensors in a weather station application. This tripod is not adjustable for sloping surfaces. (Cross arms, data logger, sensors, and radiation shield sold separately.)
The MX2001 water level sensor is used with the HOBO Bluetooth water level data logger (MX2001) and with the HOBO MicroRX Water Level Stations (RX2103 and RX2104) for accurate water pressure, temperature, and water level measurements. These sensors are available in four depth ranges, in stainless steel or titanium (recommended for use in saltwater).
This Rain Gauge Smart Sensor measures rainfall with intensity up to five inches per hour with a resolution of 0.01 inch, and 1% accuracy for rainfall rates up to 1"/hour. The tipping bucket mechanism is mounted on a stainless steel shaft with brass bearings. This model includes a 2m cable.
Also available in a wireless model for use with the HOBOnet Field Monitoring System.
Recently Viewed
Detailed Specifications
HOBO MicroRX Water Level Station
|
Operating Range |
RX2103: -40° to 60°C (-40° to 140°F) |
|
Smart Sensor Connectors |
5 |
|
Smart Sensor Network Cable Length |
100 m (328 ft) maximum |
|
Smart Sensor Data Channels |
Maximum of 15 (some smart sensors use more than one data channel; see sensor manual for details) |
|
Logging Rate |
1 minute to 18 hours |
|
Time Accuracy |
±8 seconds per month in 0° to 40°C (32°F to 104°F) range; |
|
Battery Type/Power Source |
RX2103: 6 AA 1.5 V lithium batteries or AC power adapter (P-AC-1) |
|
Battery Life |
RX2103 Battery Life: Battery life with daily connections:
Battery life with hourly connections and 1 minute logging:
Note: Deployments in areas with weak cellular strength could reduce battery life. RX2104 Battery Life: Typical 3–5 years when operated in the temperature range -20° to 40°C (-4° to 104°F); operation outside this range will reduce the battery service life. Maximum connection rates with built-in solar panel, in full sun:
Maximum connection rates with external 5W or 15W solar panels:
Battery life without solar recharging, with hourly connections and
|
|
Memory |
16 MB, 1 million measurements, continuous logging |
|
Alarm Notification Latency |
Logging interval plus 2–4 minutes, typical |
|
Enclosure Access |
Hinged door secured by two latches with eyelets for use with user-supplied padlocks |
|
LCD |
LCD is visible from 0° to 50°C (32° to 122°F); the LCD may react slowly or go blank in temperatures outside this range |
|
Materials |
Outer enclosure: Polycarbonate/PBT blend with brass inserts; Interior: Polycarbonate/PBT; Gasket: Silicone foam; Cable channel: Santoprene™ TPE; U-Bolts (not included): Steel with zinc dichromate finish |
|
Dimensions |
19.95 x 13.68 x 7.49 cm (7.85 x 5.39 x 2.95 in.) |
|
Weight |
678 g (23.9 oz) |
|
Mounting |
Optional U-bolts are compatible with masts up to 4.14 cm (1.63 in.) mast diameter; can also be mounted with zip ties or mounted to a flat surface with screws |
|
Environmental Rating |
Weatherproof enclosure, NEMA 4X and IP66 (requires proper installation of cable channel system) |
| Wireless Radio |
GSM/GPRS/EDGE: Quad band 850/900/1800/1900 MHz |
| Antenna |
4G LTE |
|
|
The CE Marking identifies this product as complying with all relevant directives in the European Union (EU) |
|
|
FCC ID QIPPLS62-W, IC ID:7830A-PLS62W |
Water Level Sensor:
Pressure (Absolute) And Water Level Measurements MX2001-01-S and MX2001-01-Ti-S:
|
Operation Range |
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 |
|
Factory Calibrated Range |
69 to 207 kPa (10 to 30 psia), 0° to 40°C (32° to 104°F) |
|
Burst Pressure |
310 kPa (45 psia) or 18 m (60 ft) depth |
|
Water Level Accuracy* |
Typical error: ±0.05% FS, 0.5 cm (0.015 ft) water |
|
Raw Pressure Accuracy** |
±0.3% FS, 0.62 kPa (0.09 psi) maximum error |
|
Resolution |
<0.02 kPa (0.003 psi), 0.21 cm (0.007 ft) water |
|
Pressure Response Time (90%)*** |
<1 second at a stable temperature |
Pressure (Absolute) And Water Level Measurements MX2001-02-S:
|
Operation Range |
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 |
|
Factory Calibrated Range |
69 to 400 kPa (10 to 58 psia), 0° to 40°C (32° to 104°F) |
|
Burst Pressure |
500 kPa (72.5 psia) or 40.8 m (134 ft) depth |
|
Water Level Accuracy* |
Typical error: ±0.05% FS, 1.5 cm (0.05 ft) water |
|
Raw Pressure Accuracy** |
±0.3% FS, 1.20 kPa (0.17 psi) maximum error |
|
Resolution |
<0.04 kPa (0.006 psi), 0.41 cm (0.013 ft) water |
|
Pressure Response Time (90%)*** |
<1 second at a stable temperature |
Pressure (Absolute) And Water Level Measurements MX2001-03-S:
|
Operation Range |
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 |
|
Factory Calibrated Range |
69 to 850 kPa (10 to 123.3 psia), 0° to 40°C (32° to 104°F) |
|
Burst Pressure |
1,200 kPa (174 psia) or 112 m (368 ft) depth |
|
Water Level Accuracy* |
Typical error: ±0.05% FS, 3.8 cm (0.125 ft) water |
|
Raw Pressure Accuracy** |
±0.3% FS, 2.55 kPa (0.37 psi) maximum error |
|
Resolution |
<0.085 kPa (0.012 psi), 0.87 cm (0.028 ft) water |
|
Pressure Response Time (90%)*** |
<1 second at a stable temperature |
Pressure (Absolute) And Water Level Measurements MX2001-04-S and MX2001-04-Ti-S:
|
Operation Range |
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 |
|
Factory Calibrated Range |
69 to 145 kPa (10 to 21 psia), 0° to 40°C (32° to 104°F) |
|
Burst Pressure |
310 kPa (45 psia) or 18 m (60 ft) depth |
|
Water Level Accuracy* |
Typical error: ±0.075% FS, 0.3 cm (0.01 ft) water |
|
Raw Pressure Accuracy** |
±0.3% FS, 0.43 kPa (0.63 psi) maximum error |
|
Resolution |
<0.014 kPa (0.002 psi), 0.14 cm (0.005 ft) water |
|
Pressure Response Time (90%)*** |
<1 second at a stable temperature |
Barometric Pressure (RX2103 and RX2104 station):
|
Operation Range |
66 to 107 kPa (9.57 to 15.52 psia) |
|
Temperature Calibrated Range |
-20 to 50°C (-4 to 122°C) |
|
Accuracy |
±0.2 kPa (±0.029 psi) over full temperature range at fixed pressure; maximum error ±0.5% FS |
|
Water Level Accuracy* |
Typical error: ±0.075% FS, 0.3 cm (0.01 ft) water |
|
Resolution |
<0.01 kPa (0.0015 psi) |
|
Response Time |
<1 second at a stable temperature |
| Stability (Drift) | 0.1°C (0.18°F) per year |
Temperature (Water Level Sensors MX2001-0x-S and MX2001-0x-Ti-S):
|
Operation Range |
-20° to 50°C (-4° to 122°F) |
|
Accuracy |
±0.44°C from 0° to 50°C (±0.79°F from 32° to 122°F) |
|
Resolution |
0.1°C at 25°C (0.18°F at 77°F) |
|
Response Time (90%) |
5 minutes in water (typical) |
| Stability (Drift) | 0.1°C (0.18°F) per year |
* Water Level Accuracy: With accurate reference water level measurement, known water density, and a stable temperature environment. System Water Level Accuracy equals the sum of the Barometric Water Level Accuracy plus the selected sensor 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. There can be up to 0.5% of additional error due to rapid temperature changes.
Measurement accuracy also depends on temperature response time.
