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  • MX2001-S
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Water Level Sensor

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Overview

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).

Highlighted Features

  • Non-vented design reduces maintenance
  • Durable, ceramic sensor
  • 3-point NIST-traceable calibration certificate

In what environment does this sensor operate?

This sensor operates in an underwater environment.

What measurements does this sensor support?

The MX2001-S sensor supports the following measurements: Barometric Pressure, Water Level and Water Temperature

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).

Highlighted Features

  • Non-vented design reduces maintenance
  • Durable, ceramic sensor
  • 3-point NIST-traceable calibration certificate

In what environment does this sensor operate?

This sensor operates in an underwater environment.

What measurements does this sensor support?

The MX2001-S sensor supports the following measurements: Barometric Pressure, Water Level and Water Temperature

The country of origin for this product is the United States.

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
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

<0.02 kPa (0.003 psi), 0.21 cm (0.007 ft) water

Pressure Response Time (90%)***

<1 second at a stable temperature

Dimensions

Sensor end (MX2001-0x-S and MX2001-0x-Ti-S: 2.54 cm (1.0 inches) diameter, 9.91 cm (3.9 inches) length

 

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
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

<0.04 kPa (0.006 psi), 0.41 cm (0.013 ft) water

Pressure Response Time (90%)***

<1 second at a stable temperature

Dimensions

Sensor end (MX2001-0x-S and MX2001-0x-Ti-S: 2.54 cm (1.0 inches) diameter, 9.91 cm (3.9 inches) length

 

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
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

<0.085 kPa (0.012 psi), 0.87 cm (0.028 ft) water

Pressure Response Time (90%)***

<1 second at a stable temperature

Dimensions

Sensor end (MX2001-0x-S and MX2001-0x-Ti-S: 2.54 cm (1.0 inches) diameter, 9.91 cm (3.9 inches) length

 

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
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

<0.014 kPa (0.002 psi), 0.14 cm (0.005 ft) water

Pressure Response Time (90%)***

<1 second at a stable temperature

Dimensions

Sensor end (MX2001-0x-S and MX2001-0x-Ti-S: 2.54 cm (1.0 inches) diameter, 9.91 cm (3.9 inches) length

 

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
Maximum error: ±0.15% FS, 0.6 cm (0.02 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.

 

    • HOBO MX2001-S water level sensor
    • Protective cap

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!

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