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Global Water

WL400 Datasheet Preview

WL400 Datasheet

Water Level Sensor

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WL400 Water Level Sensor
Submersible Pressure Transducer For Level & Pressure
High accuracy and reliability
Completely submersible sensor and cable
Compact, rugged design for easy installation
Minimal maintenance and care
Sensor compatible with most monitoring
equipment
4-20mA output
Vented cable for automatic barometric
compensation
Multiple ranges available from 3’ to 250’
Wet-wet sensor eliminates vent tube concerns
Dynamic temperature compensation system
Not affected by foam, wind or rain
Monitors levels in groundwater wells, rivers,
streams, tanks, lift stations and open channels
Description
Global Water's WL400 Water Level Sensor
submersible pressure transducer consists of a solid state
pressure sensor encapsulated in a submersible stainless
steel 13/16” diameter housing. The water level gauge
uses a marine grade cable to connect the water pressure
sensor to the monitoring device. Each of Global Water's
pressure transducers has a two-wire 4-20 mA high level
output, five full scales ranges, and is fully temperature
and barometric pressure compensated.
Low Level Range
The water depth indicator is available in a 0-3' full
scale range which is ideal for measuring shallow flows or
small water level changes. The 0-3' range is great for
measuring flows in sewers, storm drains, weirs, flumes,
lakes, tanks or any water body that is less than 3' deep.
The 0-3' water monitoring sensor accurately measures
small changes in water, even when the water's depth is
only a few inches deep. Other metal foil type sensors
typically have serious problems at low level ranges
because of crinkling, stretching and drifting.
Protective Cap
The water sensor also utilizes a stainless steel micro-
screen cap to protect the sensing element. This
protective cap has hundreds of openings, making fouling
the sensor with silt, mud or sludge virtually impossible.
Encapsulated Pressure Sensor
Global Water's Water Level Sensors are fully
encapsulated with marine-grade epoxy. The
submersible pressure transducer's electronics are
encased in marine grade epoxy so that moisture can
never leak in or work its way down the vent tube to
cause drift or level sensor failure (as is the case with
other pressure sensors). The vent tube is sealed directly
to the sensing element, and any moisture that may enter
the vent tube only comes in contact with a silicon
sensing device, not the electronics.
Output Signals
The WL400 water pressure sensors have a two-wire 4-
20 mA output signal that is linear with water depth. 10 to
36 VDC is required to operate the depth level sensor, so
the WL400 submersible pressure transducer can be
operated from 12 or 24 VDC systems. The 4-20 mA
signal can run up to 3,000' from the sensor to the
logging device. Common twisted pair or electrical
extension cord wire may be spliced to the vented cable
once the cable is out of the water. The 4-20 mA signal
may be converted to 0.5 to 2.5 VDC by dropping the
current signal across a 125 ohm resistor.




Global Water

WL400 Datasheet Preview

WL400 Datasheet

Water Level Sensor

No Preview Available !

WL400 Water Level Sensor
Submersible Pressure Transducer For Level & Pressure
Specifications
Options and Accessories
Sensing element:
Sensor Element: Silicone Diaphragm, Wet/Wet Transducer
Range: 0-3', 0-15', 0-30', 0-60', 0-120',0-250'
Linearity and Hysteresis: ±0.1% FS
Accuracy: ±0.1% FS at constant temperature, ±0.2% over 35°
to 70°F range
Overpressure: Not to exceed 2 x full scale range
Resolution: Infinitesimal (Analog)
Outputs: 4-20mA, or 0.5 to 2.5 VDC across 125 ohm resistor
Supply Voltage: 10-36VDC
Current Draw: Same as sensor output.
Warm Up Time: 10 ms minimum
Operating Temperature: -40° to +185°F
Weight: 1/2 lb.
Compensated Temperature Range: 30 to 70°F submerged,
automatic barometric compensation
Housing:
Material: 304L SS
Size: up to 5 1/2” long x 13/16" diameter
Weight: ~115g (4 oz)
Cable:
Conductors: 4 each 22 AWG
Jacket Material: 87A shore hardness Polyurethane
Optional jacket: Fluorinated Ethylene Propylene (FEP) Teflon
Cable O.D.: 7.8mm (0.307”)
Vent tube: HD Polyethylene
Shield: Aluminum Mylar
Temperature range: -30 to 85°C (-22 to 185°F)
Weight: ~65g/m (0.7 oz/ft)
WL400 Water Level
Sensor
Specify Water Level Range:
0-3', 15', 30', 60', 120', 250'.
Includes 25' cable
(Specify range upon order
placement)
WLEXC Extra Cable
Cable length is measured from end of cable to bottom of
sensor.
After 25', up to 500'
(Specify total cable length upon order placement)
EZ100
Optional Sensor Display
PRP Pressure Pipe Option
Water level sensor is housed in a 8" PVC (PRPP) or stainless
steel pipe with 3/4" NPT male thread (PRPM) for logging
pressure in municipal water systems. 10' cable standard.
Calibrated in psi with ranges of 0 to 30 psi, 60 psi, 100 psi
available.
SWO Sewer Flow
Option
Cover protects sensor from
fouling and velocity effects in
sewer, stormwater and
irrigation pipe flows. Cover is
attached to 6" X 2' stainless
steel strap for mounting sensor
on pipe bottom
Global Water - Visit our complete web catalog at: www.globalw.com


Part Number WL400
Description Water Level Sensor
Maker Global Water
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