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Series 616KX
Differential Pressure Transmitter ±0.25 %, ±0.50 %, ±1.0 %, ±2.0 %
Accuracy
Benets/Features
• Extensive range and accuracy selection suitable for a
broad range of applications offering maximum exibility
in one product platform.
• Cost effective and compact device suitable for OEM
applications where space, simplicity, and value are key.
• Edge mounted push button zero for easy access in all
mounting congurations saves time.
• Optional 1/8 in NPT and BSPT process connection
allows customer to use their own ttings.
Applications
• Air handlers
• Duct pressure
• Variable air volume
• Filter monitoring
Description
The Series 616KX Differential Pressure Transmitters
are the ideal choice for installers and maintenance
professionals that want maximum exibility in pressure
ranges in a compact design. Dwyer's smallest differential
pressure transmitter is designed for simplicity with edge
mounted push button zero for easy access in all mounting
congurations and eld selectable output signals. The
molded housing accommodates three sizes of both imperial
and metric process connections, along with optional 1/8 in
NPT or BSPT threaded models, make process connections
simple.
Specications
Service
Wetted Materials
Accuracy
Stability
Temperature Limits
Pressure Limits
Thermal Effect
Power
Requirements
Output Signal
Air and non-combustible, compatible
gases.
Consult factory.
616KX-025 ±0.25 % FSO
616KX-050 ±0.50 % FSO
616KX-100 ±1.0 % FSO
616KX-200 ±2.0 % FSO
< ±1 % / year FSO.
-4 °F to 159 °F (-20 °C to 70 °C).
3.6 psig for ranges 0 in w.c. to 1 in w.c.
(25 Pa to 250 Pa; 2.5 mm w.c. to 25
mm w.c.)
6 psig for ranges 0 in w.c. to 40 in w.c.
(500 Pa to 10000 Pa; 50 mm w.c. to
1000 mm w.c.)
0.02 % FS / °F (0.036 % FS / °C).
10 Vdc to 36 Vdc (2-wire), 17 Vdc to
36 Vdc or isolated 21.6 Vac to 33 Vac
(3-wire)
4 mA to 20 mA or option with eld
selectable 0 V to 10 V, 0 V to 5 V, 2 V to
10 V, 1 V to 5 V.
Zero Adjustment
Loop Resistance
Current
Consumption
Electrical
Connections
Process
Connections
Enclosure Rating
Mounting
Orientation
Weight
Compliance
Push button.
0 Ohms to 1250 Ohms.
21 mA max.
Screw-type terminal block.
Barbed, male ports for 1/8 in, 3/16 in,
1/4 in, 5 mm, 6 mm ID exible tubing.
NEMA 1 (IP20).
Not sensitive to position. 35 mm DIN
rail side and back. Mounting holes for
wall mount with #6 screws.
1.8 oz (51 g)
CE, RoHS 3, Plenum Rated (UL 2043),
UL94 V-0.
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7/8 in
[
22.22 mm
]
13/16 in
[
20.32 mm
]
1 1/32 in
[
26.19 mm
]
3 15/32 in
[
88.45 mm
]
2 13/32 in
[60.96 mm]
2 1/4 in
[
57.38 mm
]
2 13/32 in
[
61.39 mm
]
13/32 in
[10.36 mm]
3 7/8 in
[
98.41 mm
]
3/4 in
[
19.05 mm
]
1 1/2 in
[
38.10 mm
]
OPTIONAL
TERMINAL COVER
3/8 in
[
9.53 mm
]
1/2 in
[
12.70 mm
]
1 11/16 in
[42.90 mm]
5/32 in [3.71 mm]
THRU ALL
1/4 in [6 mm] 1/8 in [3 mm]
[
[
38.10 mm
]
OPTIONAL
Dimensions
Standard
-NPT Variant
TERMINAL COVER
13/16 in
[
20.32 mm
2 13/32 in
[
60.96 mm
2 1/4 in
57.38 mm
]
]
]
3/4 in
[
19.05 mm
]
13/32 in
[
10.36 mm
[
2 13/32 in
61.39 mm
[
]
3 5/32 in
80.21 mm
]
3 9/16 in
[
90.17 mm
]
]
1 1/32 in
[
26.19 mm
7/8 in
[
22.22 mm
]
]
5/32 in [
3.71 mm] THRU ALL
1/4 in [6 mm] 1/8 in [3 mm]
1 11/16 in
[
42.90 mm
1/2 in
12.70 mm
[
3/8 in
[
9.53 mm
]
]
]
1 1/2 in
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How to Order
®
616KX -100 -1 00 -IN
Series
616KX: Differential Pressure Transmitter
Accuracy
-025: ±0.25 % FSO Accuracy
-050: ±0.5 % FSO Accuracy
-100: ±1.0 % FSO Accuracy
-200: ±2.0 % FSO Accuracy
Direction
-1: Uni-directional
-2: Bi-directional
Range
00: 0 in w.c. to 0.1 in w.c. (25 Pa, 2.5 mm w.c.)
01: 0 in w.c. to 0.25 in w.c. (60 Pa, 5 mm w.c.)
02: 0 in w.c. to 0.4 in w.c. (100 Pa, 10 mm w.c.)
03: 0 in w.c. to 0.5 in w.c. (125 Pa, 12 mm w.c.)
04: 0 in w.c. to 1 in w.c. (250 Pa, 25 mm w.c.)
05: 0 in w.c. to 2 in w.c. (500 Pa, 50 mm w.c.)
06: 0 in w.c. to 3 in w.c. (750 Pa, 100 mm w.c.)
07: 0 in w.c. to 5 in w.c. (1250 Pa, 125 mm w.c.)
08: 0 in w.c. to 10 in w.c. (2500 Pa, 250 mm w.c.)
09: 0 in w.c. to 15 in w.c. (3750 Pa, 400 mm w.c.)
10: 0 in w.c. to 20 in w.c. (5000 Pa, 450 mm w.c.)
11: 0 in w.c. to 25 in w.c. (6250 Pa, 500 mm w.c.)
12: 0 in w.c. to 40 in w.c. (10000 Pa, 1000 mm w.c.)
Options
-NPT: NPT threads
-BSPT: BSPT Threads
-TC: Terminal Cover
-Z1: Zero dead band (1 % dead
band)
-Z2: Zero dead band (2 % dead
band)
-FC: Factory Calibration
Certicate
-NIST: NIST Accuracy Report
Units of Measure
-IN: Inches of water column
-PA: Pascals
-MM: Millimeters of water column
©Copyright 2025 Dwyer Instruments, LLC
Printed in U.S.A. 1/25 DS-616KX Rev. 6
Important Notice: Dwyer Instruments, LLC reserves the right to make changes to or discontinue any product or service identied in this publication without notice. Dwyer advises its customers
to obtain the latest version of the relevant information to verify, before placing any orders, that the information being relied upon is current.
Improving the world, one measurement at a time.
TM
UNIVERSAL
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