Dwyer Instruments 626 series Installation And Operating Instructions

Series 626 & 628 Pressure Transmitters
Specifications - Installation and Operating Instructions
-CH Conduit Housing
LIQUID TIGHT FITTING
CORD DIAMETER RANGE
.200 to .350 (5.08 to 8.89)
1-3/32
[27.76]
The Series 626 & 628 Pressure Transmitters converts a single positive pressure
into a standard 4 to 20 mA output signal. The Series 626 and 628 can be used to
accurately measure compatible gases and liquids; Series 626 full scale accuracy
is 0.25%; Series 628 full scale accuracy is 1.0% (see specifications). Designed for
industrial environments with a NEMA 4X (IP66) housing, this transmitter resists most
effects of shock and vibration.
Caution: Do not exceed specified supply voltage ratings. Permanent
damage not covered by warranty will result. This device is not designed
for 120 or 240 volt AC operation. Use only on 13 to 30 VDC.
Pressure Ranges
Pressure Maximum Over
Range Pressure Pressure
0-15 psia 30 psia 45 psia
15-0 psia 30 psia 45 psia
0-30 psia 60 psia 90 psia
0-50 psia 100 psia 150 psia
0-100 psia 200 psia 300 psia
0-200 psia 400 psia 600 psia
0-300 psia 600 psia 900 psia
0-5 psig 10 psig 50 psig
0-15 psig 30 psig 150 psig
0-30 psig 60 psig 300 psig
0-50 psig 100 psig 300 psig
0-100 psig 200 psig 500 psig
0-150 psig 300 psig 750 psig
0-200 psig 400 psig 1000 psig
0-300 psig 600 psig 1500 psig
0-500 psig 1000 psig 2500 psig
0-1000 psig 2000 psig 5000 psig
0-1500 psig 3000 psig 5000 psig
0-2000 psig 4000 psig 5000 psig
0-3000 psig 6000 psig 7500 psig
0-5000 psig 7500 psig 10000 psig
0-8000 psig 10000 psig 12000 psig
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
1-9/32
[32.54]
2-15/16 [74.61]
OPTIONAL 1/4 NPT
FEMALE FITTING
3-1/2 [88.90]
1/4 NPT
MALE FITTING
1/4 NPT
3/4
[19.05]
5-1/2 [139.70]
-GH General Purpose Housing
1/4 NPT
7/8 [22.23]
HEX

SPECIFICATIONS

Service: Compatible gases and liquids.
Wetted Materials: Type 316 SS.
Accuracy: 626: 0.25% FS, 0.20% RSS;
628: 1.0% FS, 0.5% RSS; 626 absolute
ranges: 0.5% FS, 0.35% RSS. (Includes
linearity, hysteresis, and repeatability).
Temperature Limit: 0 to 200°F (-18 to
93°C).
Compensation Temperature Range: 0
to 175° (-18 to 79°C).
Thermal Effect: 626: ±0.02% FS/°F.
628: ±0.04% FS/°F (includes zero and
span).
Pressure Limits: See table.
Power Requirements: 10-30 VDC (for
4 to 20 mA, 0-5, 1-5, 1-6 VDC outpus);
13-30 VDC (for 0-10, 2-10 VDC outputs);
5 VDC ±0.5 VDC (for 0.5-4.5 VDC ratio-
metric output).
Output Signal: 4 to 20 mA, 0-5 VDC,1-5
VDC, 0-10 VDC, or 0.5-4.5 VDC.
Response Time: 300 ms.

INSTALLATION

1. Location: Select a location where the temperature of the transmitter will be
between 0 and 175°F (-18 to 79°C). Distance from the receiver is limited only by
total loop resistance. The tubing or piping supplying pressure to the unit can be
practically any length required but long lengths will increase response time slightly.
2. Position: The transmitter is not position sensitive. However all standard models
are originally calibrated with the unit in a position with the pressure connection
downward. Although they can be used at other angles, for best accuracy it is
recommended that units be installed in the position calibrated at the factory.
3. Pressure Connection: Use a small amount of plumber's tape or other suitable
sealants to prevent leaks. Be sure the pressure passage inside the port is not
blocked.
4. Electrical Connections
Wire Length - The maximum length of wire connecting the transmitter and receiver
is a function of wire size and receiver resistance. Wiring should not contribute more
than 10% of the receiver resistance to total loop resistance. For extremely long
runs (over 1000 feet), choose receivers with higher resistance to minimize the size
and cost of connecting leads. Where wiring length is under 100 feet, wire as small
as 22 AWG can be used.
Phone: 219/879-8000
Fax: 219/872-9057
Bulletin E-111
055/64 [21.83]
2-27/64 [61.52]
3-13/64 [81.36]
Loop Resistance: 0-1000 Ohms max.
R max = 50 (Vps-10) Ohms (4 to 20 mA
output), 5K Ohms (0-5, 1-5, 1-6, 0-10,
2-10, 0.5-4.5 VDC output).
Current Consumption: 38 mA
maximum (for 4 to 20 mA output); 10 mA
maximum (for 0-5, 1-5, 1-6, 0-10, 2-10,
0.5-4.5 VDC output); 140 mA maxumum
(for all 626/628/629-CH with optional
LED).
Electrical Connections: Conduit
Housing (-CH): terminal block, 1/2˝
female NPT conduit; General Purpose
Housing (-GH): cable DIN EN 175801-
803-C.
Process Connection: 1/4˝ male or
female NPT and BSPT.
Enclosure Rating: NEMA 4X (IP66).
Mounting Orientation: Mount in any
position.
Weight: 10 oz (283 g).
Agency Approvals: CE.
www.dwyer-inst.com
e-mail: info@dwyermail.com