HOBO MicroRX Water Level Station

Operating Range

RX2103: -40° to 60°C (-40° to 140°F)
RX2104: -20° to 60°C (-4° 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;
±30 seconds per month in -40° to 60°C (-40° to 140°F) range

Battery Type/Power Source

RX2103: 6 AA 1.5 V lithium batteries or AC power adapter (P-AC-1)
RX2104: Integrated 1.7 watt solar panel and NiMH rechargeable battery pack; optional AC power adapter (P-AC-1) or external solar panel (SOLAR-xW) can be used in place of integrated solar panel

Battery Life

RX2103 Battery Life:

Battery life with daily connections:

• RX2103: 1 year with 2 minute logging

Battery life with hourly connections and 1 minute logging:

• RX2103: 2 months

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:

• 10 minute connections year round for latitudes less than ±40°
• 10 minute connections through three seasons in other regions, reduced to 30 minute connections in winter

Maximum connection rates with external 5W or 15W solar panels:

• 10 minute connections year round, in full sun
• Connection rate with external solar panels may be less if deployed in partial sun

Battery life without solar recharging, with hourly connections and
1 minute logging:

• RX2104: 2 months

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)

GSM/GPRS/EDGE: Quad band 850/900/1800/1900 MHz
UMTS/HSPA+: Seven band 800/850/900/1800/1900/2100 MHz
LTE: Twelve Band 700/800/850/900/1800/1900/2100/2600 MHz

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

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
Maximum error: ±0.1% FS, 1.0 cm (0.03 ft) water

Raw Pressure Accuracy**

±0.3% FS, 0.62 kPa (0.09 psi) maximum error

Resolution

Pressure Response Time (90%)***

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
Maximum error: ±0.1% FS, 3.0 cm (0.01 ft) water

Raw Pressure Accuracy**

±0.3% FS, 1.20 kPa (0.17 psi) maximum error

Resolution

Pressure Response Time (90%)***

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
Maximum error: ±0.1% FS, 7.6 cm (0.25 ft) water

Raw Pressure Accuracy**

±0.3% FS, 2.55 kPa (0.37 psi) maximum error

Resolution

Pressure Response Time (90%)***

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
Maximum error: ±0.15% FS, 0.6 cm (0.02 ft) water

Raw Pressure Accuracy**

±0.3% FS, 0.43 kPa (0.63 psi) maximum error

Resolution

Pressure Response Time (90%)***

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
Maximum error: ±0.15% FS, 0.6 cm (0.02 ft) water

Resolution

Response Time

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)