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SERIES 616KD-LR | DIFFERENTIAL PRESSURE TRANSMITTER - LOW RANGES
®
Integral DIN rail
mounting kit
Digital push button sets
both zero and span
FEATURES/BENEFITS
• Wide selection of low ranges and accuracy cover numerous applications minimizing components and standardizing on
design
• Simple calibration push-buttons to set zero and span, saving time installing and maintaining over the service life
• Cost effective and compact device suitable for OEM applications where space, simplicity, and value are key
• Plenum rated units meeting UL Standard 2043
NPT connection block
• Air handlers
• Duct pressure
• Variable air volume
• Filter monitoring
SPECIFICATIONS
Service Air and non-combustible, compatible gases.
Wetted Materials Consult factory.
Accuracy ±0.25% FS for ±0.4˝ (100 Pa) and ±0.5˝ (125 Pa), ±0.5% FS for ±0.25˝ (60 Pa), and ±1% FS for ±0.1˝ (25 Pa).
Stability ±1% / year FSO.
Temperature Limits 0 to 140°F (-17.8 to 60°C).
Pressure Limits 1 psi max., operation; 10 psi burst.
Power Requirements 10-35 VDC (2-wire), 17-36 VDC or isolated 21.6-33 VAC (3-wire).
Output Signal 4-20 mA (2-wire), 0-5 VDC, 0-10 VDC (3-wire).
Response Time 2.5 Hz sample rate.
Zero and Span Adjustments Push button.
Loop Resistance Current Output: 0 to 1250Ω max; Voltage output: Min. load resistance 1kΩ.
Current Consumption 40 mA max.
Electrical Connections 3-wire removable European style terminal block for 16 to 26 AWG.
Process Connections Barbed, dual size to t 1/8˝ and 3/16˝ (3 mm and 5 mm) ID rubber or vinyl tubing, or 1/4˝ NPT.
Enclosure Rating NEMA1 (IP20).
Mounting Orientation Vertical with pressure connections pointing down.
Weight 1.8 oz (51 g).
Agency Approvals CE, optional plenum rated units meet UL Standard 2043.
DESCRIPTIONAPPLICATIONS
The Series 616KD-LR Differential Pressure Transmitter - Low
Ranges is designed for simplicity, making it the ideal choice for installers
and maintenance professionals. These low range instruments not only
alleviate cumbersome turn pots typically found in most transmitters, but
eliminate entirely the need to span the instruments during calibration.
With single digital push button, both ZERO AND SPAN are calibrated
properly, nothing else is required. No additional reference pressure
sources or separate calibration devices are necessary.
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DIMENSIONS
OPTIONAL TERMINAL
5/16
OPTIONAL TERMINAL
MOUNTING
2-13/32 [61.12]
[15.72]
Ø5/32
[3.81]
MOUNTING
HOLE
2 PLACES
5/8
COVER
1-1/2
[38.10]
2-3/32 [52.83]
2-13/32 [61.29]
3/4
[19.05]
2-13/32
[61.16]
1/2
[12.70]
19/32
[15.29]
1/8˝ NPT
2 PLACES
5/16
[7.72]
3-5/16
[84.18]
7/8
[22.22]
1-1/32
[26.19]
HOW TO ORDER
Use the bold characters from the chart below to construct a product code.
616KD-LR -A 34 -B D1 -AT
SERIES
616KD-LR: Differential pressure transmitter
ACCURACY
-A: 0.25% FS accuracy
-B: 1.0% FS accuracy
-D: 0.5% FS accuracy
5/8
[15.88]
Ø5/32
[3.97]
HOLE
2 PLACES
1/2 [12.70]
COVER
2-1/4 [57.15]
1-1/2
[38.10]
[7.94]
3-21/64
[84.53]
2-13/32
[61.12]
1/2
[12.70]
7/8
[22.23]
1-1/32
[26.19]
OPTIONS
-AT: Aluminum tag
-COC: Certicate of conformance
-FC: Factory calibration certicate
-NIST: NIST traceable calibration
certicate
-TC: Terminal cover
-PR: Plenum rated
OUTPUT
D1: 4-20 mA and 0-10 V
D2: 4-20 mA and 0-5 V
D3: 4-20 mA and 2-10 V
D4: 4-20 mA and 1-5 V
PROCESS CONNECTION
-B: Plastic barb
-N: 1/8˝ female NPT with front push
button
©Copyright 2021 Dwyer Instruments, Inc.
Printed in U.S.A. 6/21 DS-616KD-LR Rev. 3
Important Notice: Dwyer Instruments, Inc. 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.
RANGES (LOW RANGES)
31: 0 to 0.1 in w.c.*
32: 0 to 0.25 in w.c.*
34: 0 to 0.4 in w.c.
35: 0 to 0.5 in w.c.
41: 0 to ±0.1 in w.c.
42: 0 to ±0.25 in w.c.
44: 0 to ±0.4 in w.c
45: 0 to ±0.5 in w.c
61: 25 Pa*
DWYER INSTRUMENTS, INC.
62: 60 Pa*
64: 100 Pa
65: 125 Pa
71: 0 to ±25 Pa
72: 0 to ±60 Pa
74: 0 to ±100 Pa
75: 0 to ±125 Pa
*B and C accuracy only.
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