| The WL900 Radar Level Transmitter offers
a logical extension to ultrasonic devices. It
is suitable for applications that require noncontact
liquid level measurement when ultrasonic
level measurement is not acceptable. |
| Variety of Uses |
| The WL900 is ideal for a variety of water
and wastewater applications involving a
reflective liquid that has a foaming surface,
vapors, or dusty conditions beyond ultrasonic
wave capabilities. |
| State of the Art Radar Technology |
| The WL900 uses a state of the art radar
pulse technology, which provides accurate
and reliable level measurements over a wide
10-inch to 50-foot range. The unit’s microwave
sends out very short pulses, which reflect
off a target and are received back by the
antenna for processing. |
| Simple Operation |
| With its single push-button calibration system,
the WL900 is easy to set up and maintain.
Simply aim the WL900 at your low
range level set point and push the button to
lock in the setting– then do the same with
the high level set point. This may be done
before permanent installation by aiming at a
wall and using a tape measure to determine
your exact range. |
| Rugged Design |
| The unit’s rugged NEMA 4 (IP65) housing
is available in either aluminum or 316L
stainless steel for corrosive environments.
A standard 2 inch NPT (M) process connection
allows for quick and versatile installation.
In addition, the unit’s polypropylene
antenna rod is virtually corrosion proof. |
- Accurate, non-contact
measurement
- Works in conditions
where ultrasonic is not
acceptable
- Pulse radar measurement
range 0.83 to 50 ft
- Simple push-button
calibration
- Standard 4-20 mA
signal output
|
| Power |
AC: 115 VAC, 60 Hz (± 20%),
1.7 VA
DC: 12 to 30 VDC, 0.07 Amps
max. @ 24 VDC |
| Outputs |
Signal: 4-20 mA, 6.1 μA resolution;
750 ohms (isolated on
4-wire models only)
Communication: RS-232 |
| Accuracy |
±0.25% of max. target range
(in air) |
 |
| Frequency |
6.3 GHz |
| Transmitter Power |
50 μW average |
| Calibration |
Push-button or optional programmable |
| Antenna |
Polypropylene over dielectric rod |
| Beam Angle |
12 degrees |
| Operating
Temperature |
-40 to 140°F (-40 to 60°C) |
| Operating Pressure |
150 psi max |
| Installation
Category |
Class II |
| Process Connection |
2 inch NPT |
| Conduit Entry |
1/2 inch NPT standard |
| Housing |
Aluminum or 316L stainless steel |
| Ingress Protection |
NEMA 4 (IP65) |
| Approvals |
FCC Part 15 - low-power communication
device |
| Weight |
3.6 lbs (1.63 Kg) |
| Dimensions |
4 in dia. x 18 in long
(10cm dia. x 45.7cm long) see drawing |
| Ideal for water and wastewater applications where
conditions are beyond ultrasonic wave capabilities,
such as those involving a reflective liquid that has a
foaming surface, vapors, or dusty conditions. |
 |
| Order NO. |
Power |
Enclosure |
| WL900-AC |
115VAC (60Hz),
230VAC (50Hz |
Aluminum |
| WL900-DC |
12 to 30 VDC |
Aluminum |
| WL901-AC |
115VAC (60Hz),
230VAC (50Hz) |
Stainless Steel |
| WL901-DC |
12 to 30 VDC |
Stainless
Steel |
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