HOBO MX Water Level Logger (MX2001-0x) Manual
U.S. and International Sales: 1-508-759-9500 3
www.onsetcomp.com
Specifications (continued)
Weight
Top end (MX2001-TOP): Approximately 136 g (4.78 oz) in air
Stainless sensor end (MX2001-0x-SS-S): Approximately 141.4 g (4.99 oz) in air; approximately 93.4 g (3.3 oz) in
fresh water
Titanium sensor end (MX2001-0x-Ti-S): Approximately 80 g (2.83 oz) in air; approximately 37 g (1.3 oz) in
fresh water
Wetted Materials
Top end (MX2001-TOP): PVC housing, Polycarbonate end cap, Viton O-ring
Stainless sensor end (MX2001-0x-SS-S): Stainless steel housing, Viton and Buna-N O-rings, ceramic sensor in
stainless steel end cap
Titanium sensor end (MX2001-0x-Ti-S): Acetal housing, Viton and Buna-N O-rings, ceramic sensor in Titanium
end cap
Cable (CABLE-DR-XXX): Polycarbonate strain relief (top end connection), PVC end cap (sensor connection),
nylon collar nuts, Viton O-rings, polyurethane jacket
Environmental Rating
Top end: NEMA 6, IP67; Intermittent 100% RH
Sensor end: IP68
The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).
See last page
* 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 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. There can be up to 0.5% of additional error due to rapid temperature
changes. Measurement accuracy also depends on temperature response time.
Note: Read all the directions in the Deploying a Logger section
before deploying the logger.
Logger Components and Operation
Disassembled top end
The MX water level logger consists of a top end and a sensor
end that are connected by a water level logger cable. The three
components work together to allow for wireless transfer of
data to the app on a phone, tablet, or computer. The following
describes each main component and the internal components
in the top end:
•
Top end.
Contains the Bluetooth wireless communication
and two AA batteries. This top end unit is suspended from
the top of the well using the mounting hole in the end cap
(see
Deploying the Logger
).
•
Sensor end.
Measures the pressure and temperature in
the water. The nose cone on the sensor end houses the
pressure sensors and the body of the sensor end houses
the temperature sensor.
•
Water level logger cable.
Connects the top end to the
sensor end. Data measured by the sensor is transmitted
through the cable to the top end where it is logged for
later upload to a mobile device or computer (see
Configuring the Logger
).
•
Battery holders.
Hold two AA batteries in the top end (see
Battery Information
).
•
Password reset button.
Resets the password. Press the
button between the two batteries in the top end to reset
the logger password to the factory default (see
Setting a
Logger Password
).
End cap with
mounting hole
Top end
Sensor end
Water level logger cable
Pressure sensors (inside)
Temperature
sensor (inside)
Password reset
button
LED (Not Visible)
Battery holders
Plot A
