Dwyer Instruments 629HLP Series User manual

Series 629HLP Differential Pressure Transmitters
Specications - Installation and Operating Instructions
Bulletin P-629HLP
The Series 629HLP Differential Pressure Transmitters are suitable for measuring
over-pressure, under-pressure, and differential pressure in compatible gases and
liquids with 1% accuracy. The 629HLP is suitable for all measuring tasks in commercial,
industrial or sanitary applications. Its single diaphragm design, allows it to measure
small increment pressure changes, and converts them to a linear analog output signal
from 4-20 mA or 0-10VDC.
Installation
Location/Mounting
The transmitter can be mounted in various locations as long it is not subject to
excessive vibration, shock, or extreme temperature (see Specications). The tubing
feeding the pressure port may be of any length, but longer lengths will increase the
response time slightly. Avoid sharp bends, and depending on the vibration and shock
it is recommended to install attenuating components.
To facilitate installation, mounting bracket A-629HLP-BKT, is available as accessory.
Position/Orientation
The transmitter is not sensitive to installation position. However, factory calibration
is performed with the unit in a vertical position and horizontal pressure connections.
Pressure Connections
Pressure connections are 1/4˝ female NPT or 1/4˝ female BSPT. Avoid excess sealant
and ensure the pressure passages are not blocked.
The piping should allow removal and reinstallation of the transmitter without shutdown
of the pressure system. Especially in applications where the differential pressures are
measured at high static line pressures that are above the overpressure limit of the
transmitter. It is recommended to install the 629HLP transmitter with a 3 way manifold
and a bypass valve (see Figure 1).
The manifold with the bypass valve will help to balance the pressure between the low
and high side of the transmitter.
Dwyer offers a 3-way Block manifold option for this purpose.
Close the drain valve and open the bypass valve. Then both shutoff valves are opened
to apply line pressure equally to both sides of the transducer. Finally, close the bypass
valve. To remove the transducer, open the bypass valve, close the shutoff valves and
open the drain valve.
Figure 1
SPECIFICATIONS
Service: Compatible gases or liquids.
Wetted Material: 304 SS.
Housing Material: ABS.
Enclosure Rating: IP65.
Accuracy: ±1% from -5 to 60°C (23 to 140°F).
Stability: ±1% FS/year.
Temperature Limits: Ambient: -10 to 60°C (14 to 122°F); Process: -10 to 80°C (14
to 176°F).
Relative Humidity: 10% to 90% non-condensing.
Installation Position: Not position sensitive.
Pressure Limits: See Pressure Range Limits chart.
Burst Pressure: See Pressure Range Limits chart.
Static Pressure Limits: See Pressure Range Limits chart.
Output Signal: 4-20 mA, 0-10 VDC.
Response Time: 50 ms.
Rated Supply Voltage: 0-10 VDC Output: 12-36 VDC or 12-32 VAC (@ Max load
of 2k Ω) 4-20 mA output: 8-36 VDC.
Max Loop resistance: (Supply Voltage – 8 V) / 0.02 for 4-20 mA output.
Power Consumption: Vout = 13 mA max, Iout = 24 mA max.
Electrical Connections: Form A DIN 43650.
Process Connections: 1/4˝ female NPT, 1/4˝ female BSPT.
Weight: 1 lb 4 oz (567 g).
Approvals: CE, RCM.
DIN CABLE
INLET
Ø.418 I.D.
3-1/4
[82.40]
2-3/16
[55.40]
2-7/16 [62.00]
2-41/64 [67.00]
1/4 NPT OR
1/4 BSPT
1-3/16
[30.00]
1-3/16
[30.00]
2-1/8
[53.81]
1-21/32
[42.00]
SHUTOFF VALVES DRAIN VALVE
PRESSURE MEASUREMENT SOURCE
SHUTOFF VALVES
PRESSURE RANGE LIMITS
Pressure
Range
Maximum Static
Pressure
*Maximum Differential
Over Pressure
**Burst Differential
Pressure
0 to 1 bar
0 to 2.5 bar
0 to 4 bar
0 to 6 bar
0 to 15 psi
0 to 30 psi
0 to 60 psi
0 to 90 psi
25 bar
25 bar
25 bar
25 bar
360 psi
360 psi
360 psi
360 psi
5 bar
5 bar
12 bar
12 bar
70 psi
70 psi
174 psi
174 psi
8 bar
8 bar
18 bar
18 bar
115 psi
115 psi
260 psi
260 psi
Note: *The differential pressure limit, between high and low ports, that the
transmitter can withstand without affecting transmitter performance
**Differential pressures between high and low ports that exceed overpressure limits
will result in permanent diaphragm deformation, and any pressure higher than the
burst pressure limits will rupture the diaphragm.
MODEL CHART
Example 629HLP -01 -P2 -S1 -FC 629HLP-01-P2-S1-FC
Series 629HLP Differential pressure transmitter
Range 01
02
04
06
15
30
60
90
0 to 1 bar
0 to 2.5 bar
0 to 4 bar
0 to 6 bar
0 to 15 psi
0 to 30 psi
0 to 60 psi
0 to 90 psi
Process
Connections
P2
P4
1/4˝ female NPT
1/4˝ female BSPT
Output Signal S1
S5
4-20 mA
0-10 VDC
Options FC
NIST
Factory calibration
NIST certicate
Note: PSI ranges available upon request. Contact factory for details.
®
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: [phone]
Fax: [phone]
www.dwyer-inst.com
e-mail: [email protected]

Printed in U.S.A. 10/19 FR# 443277-20 Rev. 3©Copyright 2019 Dwyer Instruments, Inc.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: [phone]
Fax: [phone]
www.dwyer-inst.com
e-mail: [email protected]
Electrical Connections
To make the electrical connections to the transmitters remove the top screw and lift the
connector housing (Figure 2). The terminal block is located inside (Figure 3).
Note: Shielded cable is required. Cut the shield wire at the power supply end of the
cable.
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 lower 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.
MAINTENANCE/REPAIR
Upon nal installation of the 629HLP, no routine maintenance is required. The 629HLP
is not eld serviceable and it is not possible to repair the unit. Field repair should not
be attempted as this may violate the warranty.
WARRANTY/RETURN
Refer to “Terms and Conditions of Sale” in our catalog and on our website. Contact
customer service to receive a Return Goods Authorization number before shipping the
product back for repair. Be sure to include a brief description of the problem plus any
additional application notes.
Terminal Wiring
Wire as shown in Figure 4a or Figure 4b depending on the output signal required.
Figure 2
Figure 3
Figure 4a (0-10 VDC)
Figure 4b (4-20 mA)
This unit is not designed for 120 or 240 VAC line operation. Do not
exceed specied supply voltage rating. Permanent damage not
covered by warranty may result.
CAUTION WIRING - CURRENT OUTPUT
IOUT +
IOUT -
SHIELD
3
1
2
3
21
WIRING - VOLTAGE OUTPUT
COM (-)
VOUT (+)
PWR (+)
SHIELD