®
SERIES 626 & 628 | INDUSTRIAL PRESSURE TRANSMITTER/TRANSDUCER
626/628 pressure transmitters with
general purpose housing (-GH)
FEATURES/BENEFITS
Standard:
• NEMA 4X rated enclosure
• Robust 316L SS oil lled sensor
• CE approved design
• 626: 0.25% FS
• 628: 1.0% FS
• Booster stations
• Pumping systems
• Irrigation equipment
• PTO systems
• Submersible pump control
626/628 pressure transmitters
with conduit box housing (-CB)
and LCD display
Optional:
• Advanced environmental protection
• C-276 wetted materials
• Digital or analog outputs (I2C)
• Custom range conguration
• Overpressure and/or vacuum protection
DESCRIPTIONAPPLICATIONS
The Series 626 & 628 Pressure Transmitters feature a piezo-resistive
sensor contained in a compact, rugged, NEMA 4X (IP66) stainless steel
general purpose housing or cast aluminum conduit housing.
Dwyer offers optional congurations to address multiple common points
of failure that have traditionally challenged the use of similar products
in extreme conditions. The 626 & 628 are uniquely suited for precision
irrigation and additional outdoor power equipment applications. The
corrosion resistant 316L stainless steel wetted parts allow the Series
626 & 628 transmitters to measure pressure in a multitude of processes
from simple irrigation systems to chemical dosing and injection systems.
Optional wetted materials such as C-276 offer chemical compatibility
with aggressive media. The 626 & 628 can be congured to provide
advanced environmental protection. This includes, but is not limited to,
freeze/thaw protection for outdoor cold weather applications, vibration
resistance, and/or overpressure protection to protect the sensors
against pressure surges or pump cavitation. The Series 626 & 628
are available in absolute and gauge pressure ranges with a variety of
optional outputs, process connections, electrical terminations, and select
agency approvals to allow you to select the correct transmitter for your
application.
Contact Dwyer Instruments today to discuss your specic
application needs.
Service Compatible gases and liquids.
6-23/64 [161.528]
L
LIQUID TIGHT FITTING
CORD DIAMETER RANGE
.200
(5.08
Wetted Materials Type 316L SS. (Consult factory for additional options)
Accuracy 626: 0.25% FS, 0.20% RSS; 628: 1.0% FS, 0.5% RSS; 626 absolute ranges: 0.5% FS, 0.30% RSS. (Includes
linearity, hysteresis, and repeatability).
Temperature Limit 0 to 200°F (-18 to 93°C).
Compensated Temperature Range 0 to 175°F (-18 to 79°C).
Thermal Effect ±0.2% FS/°F (includes zero and span).
Pressure Limits See table on catalog page.
Display Optional 4-1/2 digit LCD eld attachable display. For -CB option.
Power Requirement 10-30 VDC (for 4-20 mA, 0-5, 1-5, VDC outputs); 13-30 VDC (for 0-10 VDC output); 5 VDC ±0.5 VDC (for 0.5-
4.5 VDC ratiometric output), 10-35 VDC (for 4-20 mA with -CB option); 13-35 VDC or isolated 16-33 VAC (for
selectoable output with -CB option).
Output Signal 4-20 mA, 0-5 VDC, 1-5 VDC, 0-10 VDC, or 0.5-4.5 VDC, or selectable 0-5, 1-5, 0-10, 2-10 VDC for -CB option.
Response Time 300 ms.
Loop Resistance 0 to 1000 Ω max. R max = 50 (Vps-10) Ω (4-20 mA output), 0 to 1250 Ω max. Rmax = 50(Vps-10) Ω (4 to 20 mA
output with -CB option), 5K Ω (0-5, 1-5, 0-10, 0.5-4.5 VDC output).
Stability 1.0% FS/year (typ).
Current Consumption 38 mA maximum (for 4-20 mA output); 10 mA maximum (for 0-5, 1-5, 0-10, 0.5-4.5 VDC output); 140 mA
maximum (for all 626/628/629-CH with optional LED).
Electrical Connections See model chart.
Process Connections See model chart.
Enclosure Rating NEMA 4X (IP66).
Weight 10 oz (283 g).
Agency Approvals Standard: CE; Optional: NSF/ANSI 61/372, ANSI/UL 218, ANSI/UL 508, NEPA 20.
DIMENSIONSSPECIFICATIONS
6-23/64 [161.528]
L
LIQUID TIGHT FITTING
CORD DIAMETER RANGE
.200
(5.08
TO .350
TO 8.89)
11/32 [34.131]
23/32
[18.256]
59/64 [23.415]
Conduit housing
2-1/8 [53.975]
1/4 NPT OR BSPT
FEMALE FITTING
2-21/32 [67.46]
OPTIONAL
1/4 NPT
OR BSPT
MALE FITTING
3-7/32
[81.756]
OPTIONA
LCD
7/8 [22.23]
HEX
1/4 NPT
2-27/64 [61.52]
General purpose housing
Ø55/64 [21.83]
3-13/64 [81.36]
®
HOW TO ORDER
Use the bold characters from the chart below to construct a product code.
626 -05 -GH -P3 -E1 -S1 -NIST
SERIES
626: 0.25% full scale accuracy
628: 1.0% full scale accuracy
RANGE
-00: 0 to 15 psia*
-01: 0 to 30 psia*
-02: 0 to 50 psia*
-03: 0 to 100 psia*
-04: 0 to 200 psia*
-05: 0 to 300 psia*
-06: 0 to 5 psi
-07: 0 to 15 psi
-08: 0 to 30 psi
-09: 0 to 50 psi
-10: 0 to 100 psi
-11: 0 to 150 psi
-12: 0 to 200 psi
-13: 0 to 300 psi
HOUSING
-CB: Conduit box housing
-GH: General purpose housing
-14: 0 to 500 psi
-22: 0 to 600 psi
-15: 0 to 1000 psi
-16: 0 to 1500 psi
-18: 0 to 3000 psi
-19: 0 to 5000 psi
-26: 0 to 8000 psi
-67: 0 to 0.5 bar*
-71: 0 to 2.5 bar*
-75: 0 to 10 bar*
-81: 0 to 40 bar*
*Only available on
-GH housing models
OPTIONS
-AT: Aluminum tag
-LED: Bright red LED display
-NIST: NIST traceable calibration certicate
-NW: NSF/ANSI 61/372 certied
SIGNAL OUTPUT
-S1: 4-20 mA
-S2: 1-5 VDC
-S4: 0-5 VDC
-S5: 0-10 VDC
-S7: 0.5-4.5 VDC
-S8: 0-5, 1-5, 0-10, 2-10 VDC
ELECTRICAL CONNECTIONS
-E1: Cable gland with 3´ of prewired cable
-E3: Cable gland with 9´ of prewired cable
-E4: DIN EN 175801-803-C
-E5: 1/2˝ female NPT conduit
-E6: M-12 4-pin connector UL listed
-E8: Packard connector
-E9: M-12 4-pin connector non-UL listed
PROCESS CONNECTIONS
-P1: 1/4˝ male NPT
-P2: 1/4˝ female NPT
-P3: 1/4˝ male BSPT
-P5: 1/4˝ female SAE with refrigerant valve
depressor
-P9: 1/2˝ male NPT
ACCESSORIES
Model Description
A-164
A-62X-LCD
A-960
A-961
A-962
16.4´ (5 m) cable with M-12 4-pin female connector
Field-upgradeable LCD
3´ (1 m) Packard cable
9´ (3 m) Packard cable
20´ (7 m) Packard cable
DWYER INSTRUMENTS, INC.
©Copyright 2020 Dwyer Instruments, Inc.
Printed in U.S.A. 3/20 DS-626-628 Rev. 7
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.
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