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SERIES WWDP
DIFFERENTIAL PRESSURE TRANSMITTER
Selectable Ranges of Uni-Directional or Bi-Directional, Selectable Outputs
CALIBRATION SERVICES AVAILABLE
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1/2˝ CONDUIT
OPENING
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PRESSURE
The Series WWDP Differential Pressure Transmitter offers everything in one
package by having 30 eld selectable variations in just 3 models. The WWDP provides
eld selectable unidirectional and bidirectional pressure ranges, congurable 0-5, 1-5,
0-10 VDC, and 4-20 mA output. It also provides an auto-zero capability. The eld
selectable port swap feature eliminates costly re-plumbing if the unit is improperly
installed or if the transmitter is simply replaced. An optional LCD display is available for
on-sight indication of line and differential pressure. The all cast aluminum housing is
rated NEMA 4 (IP66). These features make the WWDP transmitter an ideal instrument
for measuring the ow of various liquids and gases, pressure drop across lters,
measurement of liquid level or pressurized vessels, and for use in energy management
and process control systems.
BENEFITS/FEATURES
• Versatile device for liquid or gas supports designs requiring more precise
measurements in support of application
• Field selectable port swap eliminates costly re-plumbing if unit is re-installed or
replaced
• Uni-directional and bi-directional pressure selection with congurable output
provides a single device that can meet broad application needs without having to
specify multiple devices
• Optional LCD display provides local status to identify operational conditions
• NEMA 4 rated enclosure provides protection in harsh environments permitting
outdoor monitoring or in areas where dust and particulate matter exists
APPLICATIONS
• Chiller monitoring
• Pressure vessels
• Filter monitoring
• Process control
• Energy management
• Liquid level
MODEL CHART
Model Description (psid)
WWDP-1
WWDP-2
WWDP-3
WWDP-1-LCD
WWDP-2-LCD
WWDP-3-LCD
Selectable 5, 10, 25, 50
Selectable 10, 20, 50,100
Selectable 25, 50,125, 250
Selectable 5, 10, 25, 50
Selectable 10, 20, 50,100
Selectable 25, 50,125, 250
Max. Working
Pressure (psi)
50
100
250
50
100
250
SPECIFICATIONS
Service: Gases or liquids compatible
with 17-4 PH SS.
Accuracy: All pressure ranges have
±1% FS accuracy except the lowest
selectable range of each unit is ±2% FS.
Stability: ±0.5% per year.
Temperature Limits: Compensated
temperature range: 32 to 130°F (0 to
54°C); Operating temperature range: -4
to 185°F (-20 to 85°C).
Pressure Limits: Max working pressure:
WWDP-1: 50 psi; WWDP-2: 100 psi;
WWDP-3: 250 psi; Proof pressure: 2.2X
of FS; Burst pressure: 40X of FS.
Thermal Effect: 2% FS/100°F (50°C)
includes zero and span.
Power Requirements: 12-30 VDC/1828 VAC (reverse excitation protected).
Note: 4-20 mA output cannot be
powered with AC voltage.
Output Signal: Selectable 0-5, 0-10 and
1-5 VDC; 4-20 mA.
OPTIONS
Use order code: Description
NISTCAL-PT1 NIST traceable calibration certicate
Zero and Span: Digital “re” zero button
(should be used when changing ranges).
Span can be adjusted by changing
between eld selectable ranges.
Response Time: 1 to 5 s (selectable).
Loop Resistance: 1000 Ω.
Current Consumption: VDC power: 0-5,
1-5 VDC output 4 mA (typ); 0-10 VDC
output 5 mA (typ); 4-20 mA output 20 mA
max. Current consumption will equal the
transmitter output in current mode. VAC
power: 0-5, 1-5, 0-10 VDC output 40 mA
(typ).
Electrical Connections: 1/2˝ conduit.
Process Connections: 1/8˝ female NPT
internal.
Enclosure Rating: Designed to meet
NEMA 4 (IP56).
Mounting Orientation: Vertical; mount
the pressure ports down (keeps debris
from building up inside the pressure
port).
Weight: 1.5 lb (680.4 g).
Compliance: CE.
Differential Pressure Transmitters, Liquid & Gas /
Single Pressure Gages, Dial
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