626 and 628 Series Installation and Operation Instructions

Bulletin E-111
Series 626 & 628 Pressure Transmitters
Specifications - Installation and Operating Instructions
-GH General Purpose Housing
-CH Conduit Housing
7/8 [22.23]
HEX
1-3/32
[27.76]
055/64 [21.83]
1/4 NPT
1-9/32
[32.54]
LIQUID TIGHT FITTING
CORD DIAMETER RANGE
.200 to .350 (5.08 to 8.89)
2-15/16 [74.61]
OPTIONAL 1/4 NPT
FEMALE FITTING
2-27/64 [61.52]
3-13/64 [81.36]
3-1/2 [88.90]
1/4 NPT
MALE FITTING
1/4 NPT
5-1/2 [139.70]
3/4
[19.05]
The Series 626 and 628 Pressure Transmitters converts a single positive
pressure into a standard 4-20 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
Maximum Over
Pressure Pressure
45 psia
30 psia
45 psia
30 psia
90 psia
60 psia
150 psia
100 psia
300 psia
200 psia
600 psia
400 psia
900 psia
600 psia
50 psig
10 psig
150 psig
30 psig
300 psig
60 psig
300 psig
100 psig
500 psig
200 psig
750 psig
300 psig
1000 psig
400 psig
1500 psig
600 psig
1000 psig 2500 psig
2000 psig 5000 psig
3000 psig 5000 psig
4000 psig 5000 psig
6000 psig 7500 psig
7500 psig 10000 psig
10000 psig 12000 psig
Pressure
Range
0-15 psia
15-0 psia
0-30 psia
0-50 psia
0-100 psia
0-200 psia
0-300 psia
0-5 psig
0-15 psig
0-30 psig
0-50 psig
0-100 psig
0-150 psig
0-200 psig
0-300 psig
0-500 psig
0-1000 psig
0-1500 psig
0-2000 psig
0-3000 psig
0-5000 psig
0-8000 psig
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
4-20 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: 4-20 mA, 0-5 VDC,1-5
VDC, 0-10 VDC, or 0.5-4.5 VDC.
Response Time: 50 msec.
Loop Resistance: 0-1000 Ohms max.
R max = 50 (Vps-10) Ohms (4-20 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 4-20 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 175801803-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.
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.
DWYER INSTRuMENTS, INC.
P.O. BOx 373 • MICHIGAN CITY, INDIANA 46360, u.S.A.
Phone: 219/879-8000
Fax: 219/872-9057
www.dwyer-inst.com
e-mail: [email protected]
CuRRENT (4-20 mA) OuTPuT OPERATION
An external power supply delivering 10-30 VDC with minimum current capability of
40 mA DC (per transmitter) is required to power the control loop. See Fig. A for
connection of the power supply, transmitter and receiver. The range of appropriate
receiver load resistance (RL) for the DC power supply voltage available is
expressed by the formula:
RL Max =
Vps – 10
20 mA DC
POWER
SUPPLY
10-30 VDC
(40 ma)
Shielded cable is recommended for control loop wiring.
PRESS AND
HOLD TO ZERO
THE DISPLAY
SPAN
ZERO
RECEIVER
mA
+
TERM 1 (+)
TERM 2 (-)
-
- LED DISPLAY NEGATIVE SUPPLY TERM 3 (-)
10-30 VDC
(100 ma) + LED DISPLAY POSITIVE SUPPLY
Current Output
TERM 4 (+)
YELLOW
LED DISPLAY
CONNECTOR
LED SUPPLY
POWER SUPPLY
1 RED
2 BLACK
PRESSURE
TRANSMITTER 3 (NC)
mA
+ RECIEVER -
POWER
SUPPLY
10-30 VDC
4 (NC)
Fig. A: Current output connection
Conduit Housing with 4-20 mA Output (-CH) Electrical connections to the
pressure transmitters are made to the terminal block located inside the housing.
Remove the screws and lift off the cover. Wire as shown in Fig. A, B or C. Use Fig.
A for current output connection. Use Fig. B for current output with optional LED
display. Use Fig. C for current output with optional LED display using two power
supplies.
If ordering optional pre-wired cable, black wire is negative (-) and red wire is
positive (+).
PRESS AND HOLD TO
ZERO THE DISPLAY
PRESS TO DISPLAY
THE GAGE’S
PRESSURE RANGE
SPAN
ZERO
TRANSMITTER CONNECTION:
- TURN OFF POWER
- CONNECT THE POWER SUPPLY AND
RECEIVER TO TERM 1 AND TERM 2
OF THE GAGE AS SHOWN
- CONNECT LED POWER SUPPLY (-)
TO TERMINAL 3
- CONNECT LED POWER SUPPLY (+)
TO TERMINAL 4
- INSTALL THE DISPLAY’S CONNECTOR
- TURN ON POWER
OPTIONAL LED DISPLAY
BE SURE TO TURN OFF POWER WHEN
CONNECTING OR REMOVING THE
DISPLAY’S CONNECTOR. FAILURE TO DO
SO CAN RESULT IN THE GAGE DAMAGE.
Fig. C: Current output with optional LED display using two power supplies
Heirschman DIN Connector with 4-20 mA When using cable version of -GH
General Purpose Housing, black wire is negative (-) and red wire is positive (+).
When using optional Heirschman DIN Plug, remove top-center screw and lift off the
terminal block assembly. Wire to terminals shown below in Fig. D. For optional 4pin M-12 connector, wire to pins as shown in Fig. E.
A
TERMINAL 4: (-)
TERMINAL 1: (+)
A
POWER
SUPPLY
10-30 VDC
(140 ma)
-
RECEIVER TERM 1 (+)
mA
TERM 2 (-)
LED DISPLAY CONNECTOR
LED DISPLAY
POSITIVE SUPPLY
TRANSMITTER CONNECTION:
- TURN OFF POWER
- CONNECT THE POWER SUPPLY
AND RECEIVER TO TERM 1 AND
TERM 2 OF THE GAGE AS SHOWN
- CONNECT POWER SUPPLY (+) TO
TERMINAL 4 (REQUIRED FOR THE
OPTIONAL DISPLAY ONLY)
- INSTALL THE DISPLAY’S CONNECTOR
- TURN ON POWER
TERM 4 (+)
YELLOW
OPTIONAL LED DISPLAY
BE SURE TO TURN OFF POWER WHEN
CONNECTING OR REMOVING THE
DISPLAY’S CONNECTOR. FAILURE TO DO
SO CAN RESULT IN THE GAGE DAMAGE.
Fig. B: Current output with optional LED display connection
TERMINAL 3: (GROUND) T
SECTION A-A
TERMINAL 1: (+)
TERMINAL 2: (-)
Fig. D
+
PRESS TO
DISPLAY
THE GAGE’S
PRESSURE
RANGE
Fig. E
VOLTAGE (0-5, 1-5, 0-10, 1-6 or 2-10 VDC) OuTPuT OPERATION
(Other outputs contact the factory) See Fig. F for connection of the power supply,
transmitter and receiver.
RATIOMETRIC (0.5-4.5 VDC) OuTPuT OPERATION
(Other outputs contact the factory) See Fig. J for connection of the power supply,
transmitter and receiver.
Voltage Output
Voltage Output
1 RED
1 RED
2 BLACK (COMMON)
PRESSURE
TRANSMITTER 3 WHITE (+V OUT)
POWER
SUPPLY
5 VDC
±10%
2 BLACK (COMMON)
PRESSURE
TRANSMITTER 3 WHITE (+V OUT)
POWER
SUPPLY
4 (NC)
4 (NC)
+V in
+V in
RECEIVER
RECEIVER
V
Fig. F: Voltage output connection
Fig. J: Voltage output connection
Conduit Housing (-CH) Electrical connections to the pressure transmitters are
made to the terminal block located inside the housing. Remove the screws and lift
off the cover. Wire as shown in Fig. F or Fig. G. Use Fig. F for voltage output
connection. Use Fig. G for voltage output with optional LED display connection. If
ordering optional pre-wired cable, black wire is negative (-), red wire is positive (+)
and white wire is +Vout.
General Purpose Housing with Ratiometric Output When using cable version
of -GH General Purpose Housing, black wire is negative (-), red wire is positive (+)
and white wire is output. When using optional Heirschman DIN Plug, remove topcenter screw and lift off the terminal block assembly. Wire to terminals shown
below in Fig. K. For optional 4-pin M-12 connector, wire to pins as shown in Fig. L.
If utilizing optional A-164 cable for M-12 connection, brown wire corresponds to pin
#1, white #2, blue #3, and black #4.
SPAN
ZERO
PRESS AND
HOLD TO ZERO
THE DISPLAY PRESS TO
DISPLAY THE
GAGE’S
PRESSURE
RANGE
A
TERMINAL 4: (-)
TERMINAL 1: (+)
A
LED DISPLAY POSITIVE SUPPLY
TERM 4 (+)
TERM 1 (+)
+
POWER
SUPPLY
Fig. K
+
TERMINAL 2: (Vout)
Fig. L
TERM 2 (-)
-
RECEIVER
TERMINAL 3: (GROUND)
SECTION A-A
TERMINAL 1: (+)
TERMINAL 2: (-)
TERMINAL 3: [OUTPUT]
+ V OUT
TRANSMITTER CONNECTION:
- TURN OFF POWER
- CONNECT POWER SUPPLY
(+) TO TERMINAL 1
- CONNECT POWER SUPPLY
(-) TO TERMINAL 2 AND TO
THE RECEIVER (-)
- CONNECT THE RECEIVER
(+) TO TERMINAL 3
- CONNECT LED POWER SUPPLY
(+) TO TERMINAL 4
- INSTALL THE DISPLAY’S
CONNECTOR
- TURN ON POWER
TERM 3 (-)
LED DISPLAY
CONNECTOR
YELLOW
OPTIONAL LED DISPLAY
BE SURE TO TURN OFF POWER WHEN
CONNECTING OR REMOVING THE
DISPLAY’S CONNECTOR. FAILURE TO DO
SO CAN RESULT IN THE GAGE DAMAGE.
Fig. G: Voltage output with optional LED display connection
Heirschman DIN Connector with Voltage Output When using cable version of
-GH General Purpose Housing, black wire is negative (-), red wire is positive (+)
and white wire is output. When using optional Heirschman DIN Plug, remove topcenter screw and lift off the terminal block assembly. Wire to terminals shown
below in Fig. H. For optional 4-pin M-12 connector, wire to pins as shown in Fig. I.
If utilizing optional A-164 cable for M-12 connection, brown wire corresponds to pin
#1, white #2, blue #3, and black #4.
A
TERMINAL 4: (-)
TERMINAL 1: (+)
TERMINAL 3: (GROUND)
SECTION A-A
TERMINAL 1: (+)
TERMINAL 2: (-)
TERMINAL 3: [OUTPUT]
A
Fig. H
TERMINAL 2: (Vout)
Fig. I
MAINTENANCE
After final installation of the pressure transmitter and its companion receiver, no
routine maintenance is required. A periodic check of system calibration is
suggested. The Series 626 and 628 transmitters are not field repairable and should
be returned if repair is needed (field repair should not be attempted and may void
warranty). Be sure to include a brief description of the problem plus any relevant
application notes. Contact customer service to receive a return goods authorization
number before shipping.
©Copyright 2012 Dwyer Instruments, Inc.
DWYER INSTRuMENTS, INC.
P.O. BOx 373 • MICHIGAN CITY, INDIANA 46360, u.S.A.
Printed in U.S.A. 7/12
Phone: 219/879-8000
Fax: 219/872-9057
FR# 01-443271-00 Rev.16
www.dwyer-inst.com
e-mail: [email protected]

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