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SERIES 616WL
E
E
Air & Gas
Differential Pressure Transmitters,
DIFFERENTIAL PRESSURE TRANSMITTER
Low Ranges Down to 0.25 in w.c. (60 Pa), NEMA 4X Housing (IP66)
CALIBRATION SERVICES AVAILABLE
E
O
D
I
V
O
N
L
I
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The Series 616WL Differential Pressure Transmitter senses very low pressures
of air and non-combustible, compatible gases and sends a standard 4-20 mA output
signal. All models, including those featuring the 3 digit LCD digital read-out, are
factory calibrated to specic ranges as listed in the chart below. Positive, negative
and differential pressures can be measured within a full span accuracy of ±0.50%.
This weatherproof unit is enclosed in a polycarbonate case, designed to meet (IP66/
NEMA 4X). Internal digital push-button zero and span allow for quick and simple eld
calibration.
BENEFITS/FEATURES
• NEMA 4X rated enclosure provides protection in harsh environments permitting
outdoor monitoring or in areas where dust and particulate matter exists
• Easy to read LCD display provides immediate local alerts allowing corrective action
to be taken quicker to eliminate the problem from becoming widespread
• Zero and span controls provides easy calibration checks and shorter installation
time to get device running and monitoring
• High precision accuracy at low pressure ranges provides exceptional accuracy for
insuring tight-control and minimizing costly out of specication conditions
APPLICATIONS
• Low pressure applications
• Dust collection
• Outdoor HVAC
• Roof-top equipment
DWYER INSTRUMENTS, LLC | dwyer-inst.com60
MODEL CHART
Model Range Max. Pressure
616WL-2-LCD
616WL-4-LCD
616WL-12-LCD
616WL-14-LCD
616WL-22-LCD
616WL-32-LCD
616WL-25-LCD
616WL-35-LCD
0 to 0.25 in w.c.
0 to 1 in w.c.
0 to ±0.25 in w.c.
0 to ±1 in w.c.
0 to 60 Pa
0 to ±60 Pa
0 to 250 Pa
0 to ±250 Pa
2 psig
4 psig
2 psig
4 psig
2 psig
2 psig
4 psig
4 psig
63/61 [25.00]
SPECIFICATIONS
Service: Air and non-combustible,
compatible gases.
Wetted Materials: Consult factory.
Accuracy: ±0.50% FS, display accuracy
±0.5%.
Stability: ±1% FS/yr.
Temperature Limits: 0 to 140°F
(-17.8 to 60°C).
Compensated Temperature Limits: 20
to 120°F (-6.67 to 48.9°C).
Pressure Limits: See chart.
Thermal Effect: ±0.02% FS/°F (0.036%
FS/°C).
Power Requirements: 12-30 VDC
(2-wire).
Output Signal: 4-20 mA.
OPTIONS
To order add sufx: Description
-NIST NIST traceable calibration certicate
Example: 616WL-4-LCD-NIST
[79.38]
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FITTING TO ACCOMODATE
CABLE DIAMETERS
OF .100 - .260
1/8 AND 3/16
[3.18 AND 4.76] I.D. TUBING
Process Tubing Options: See page 453 (Gage Tubing Accessories)
MOUNTING HOLES TYP 4 PLCS
Zero and Span Adjustments: Digital,
push-button adj.
Loop Resistance: DC; 0 to 900 Ω max.
Current Consumption: DC; 38 mA
max.
Electrical Connections: Screw-type
terminal block.
Process Connections: Barbed, dual
size to t 1/8˝ and 3/16˝ (3.12 and 4.76
mm) ID rubber or vinyl tubing.
Enclosure Rating: NEMA 4X (IP66).
Mounting Orientation: Vertical, consult
factory for other position orientations.
Weight: Without LCD 17 oz (482 g);
with LCD 18 oz (510 g).
Compliance: CE.
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