Model PR-243
Technical Information
TI.243-02
7400 Flying Cloud Drive • Minneapolis, MN 55344-3720 • USA
800-843-5116 • 612-835-1626 • Fax 612-829-5331
[email protected] • www.mamacsys.com
Pneumatic Pressure Transducer
Accuracy*:
± 1% FS
Maximum Pressure:
40 psig
Supply Voltage:
12-40 VDC
12-35 VAC (VDC output units only)
Supply Current:
VDC Units - 10 mA max.
mA Units - 20 mA max.
Enclosure:
18 Ga C. R. Steel NEMA 4(IP-65)
Finish:
Baked on enamel-PMS2GR88B
Conformance:
EMC Standards EN50082-1(1992)
EN55014(1993)/EN60730-1(1992)
Compensated Temp Range:
0ºF-180ºF (-18ºC-82ºC)
T. C. Error:
±0.025%/ºF (.03%/ºC)
Media Compatibility:
Dry air or inert gases
Port Connection:
5/32” I.D., 1/4” OD Hose Barb
Environmental:
10-90%RH Non-Condensing
Termination:
Unpluggable screw terminal block
Wire Size:
12 Ga max.
Load Impedance:
1.6K ohms max. at 40 VDC (mA output units)
1K ohms min. (VDC output units)
Weight:
1.0 lbs. (.45 kg)
*Includes non-linearity, hysteresis and non-repeatability
FOR ADDITIONAL INFORMATION
SEE PR-243 DATA SHEET
SPECIFICATIONS
RANGE
OUTPUT
Requirements
• Tools (not provided)
- Digital Volt-ohm Meter (DVM)
- Appropriate screwdriver for mounting screws
- Appropriate drill and drill bit for mounting screws
• Appropriate accessories
• Two #8 self-tapping mounting screws (not provided)
• Training: Installer must be a qualified, experienced
technician
Warning:
• Do not use on oxygen service, in an
explosive/hazardous environment, or with
flammable/combustible media.
• Disconnect power supply before installation to prevent
electrical shock and equipment damage.
• Make all connections in accordance with the job wiring
diagram, and in accordance with national and local
electrical codes. Use copper conductors only.
Caution:
• Use electrostatic discharge precautions (e.g., use of
wrist straps) during installation and wiring to prevent
equipment damage.
• Avoid locations where severe shock or vibration,
excessive moisture or corrosive fumes are present.
NEMA Type 4 housings are intended for outdoor use
primarily to provide a degree of protection against
wind-blown dust, rain, and hose-directed water.
• Do not exceed ratings of the device.
Mounting
The PR-243 must be mounted on a vertical surface with
the 1/4” brass hose barb pointing left or right. Refer to
Figure-7 for mounting dimensions.
1.Remove the transducer cover using a Phillips head
screwdriver.
2.Select the mounting location.
3.Mount transducer on a vertical surface with two #8
self-tapping screws (not provided).
4.Pull wires through bottom of enclosure and make
necessary connections.
5.Replace cover and make pneumatic connections.
Wiring
Use maximum 12 AWG wire for wiring terminals. Use
flexible 1/4” O.D., 5/32 I.D.tubing for pressure connections.
Refer to Figures 1, 2, 3, & 4 for wiring information and
Figures 5 & 6 for jumper designations.
Wiring PR-243 Units with mA Output
PR-243 pressure transducers are 4-20 mA output units
powered with a 12-40 VDC supply.
The following describes the proper wiring of these
pressure transducers with mA output:
1.Remove the blue terminal block by carefully pulling it
off the circuit board.
2.Locate the [+] and [-] terminal markings on the board.
3.Attach the supply voltage to the [+] lead.
4.Connect the 4-20 mA output ([-] terminal) to the
controller’s input terminal.
5.Ensure that the power supply common is attached to
the common bus of the controller.
6.Re-insert the terminal block to the circuit board and
apply power to the unit.
7.Check for the appropriate output signal using an
ampmeter set on DC milliamps connected in series
with the [-] terminal.
!
R1
(psig) 0 TO 20 / 0 TO 10 / 0 TO 5
mA
(4-20 mA 2-wire)
R2
(psig) 0 TO 30 / 0 TO 15 / 0 TO 7.5
VDC
(0-5 VDC or 0-10 VDC
Field Selectable)
R3
(psig) 3 TO 15
R4
(kPa) 0 TO 140 / 0 TO 70 / 0 TO 35
R5
(kPa) 0 TO 200 / 0 TO 100 / 0 TO 50
R6
(kPa) 20 TO 100
INSTALLATION
Inspection
Inspect the package for damage. If damaged, notify the
appropriate carrier immediately. If undamaged, open the
package and inspect the device for obvious damage.
Return damaged products.
