MAMAC Systems PR-275 - Manual (Page 4)

Model PR-274/275
Technical Information
TI.274/275-06
LOW PRESSURE SENSOR
Page 4 of 4
CHECKOUT
CALIBRATION
1. Verify that the unit is mounted in the correct position.
2. Verify appropriate input signal and supply voltage.
3. Verify appropriate configuration range.
Caution: Never connect 120 VAC to these transducers. Never
connect AC voltage to a unit intended for DC supply.
Transducer
Operation
This is a rough functional check only.
1. Adjust the pressure to obtain maximum output signal for
appropriate range.
2. Output should be 20 mA or 5 or 10 VDC.
3. Adjust the pressure to obtain minimum output signal.
4. Output should be 4 mA or 0 VDC.
Calibration of PR-274/275 mA Units
1. Connect terminals [+] and [-] to the appropriate power
source.
2. Connect the DVM in series on the [-] terminal.
3. Apply low pressure to the unit. If configured for
uni-direction, adjust Zu trimmer to achieve desired low
output. If configured for bi-direction, adjust Zb trimmer to
achieve desired low output.
4. Apply high pressure to the unit and adjust span trimmer [S]
to obtain the desired high output pressure.
5. Repeat steps 3 and 4 until desired calibration is achieved.
All units are factory calibrated to meet or exceed published
specifications. If field adjustment is necessary, follow the
instructions below.
MAINTENANCE Regular maintenance of the total system is recommended to
assure sustained optimum performance.
FIELD REPAIR None. Replace with a functional unit.
WARRANTY See Data Sheet for additional information.
Calibration of PR-274/275 VDC Units
1. Connect terminals [+] and [-] to the appropriate power
source. The [-] terminal is also the negative output terminal.
2. Connect the DVM on DC volts across [O] and [-] terminal.
3. Apply low pressure to the unit. If configured for
uni-direction, adjust Zu trimmer to achieve desired low
output. If configured for bi-direction, adjust Zb trimmer to
achieve desired low output.
4. Apply high pressure to the unit and adjust span trimmer [S]
to obtain the desired high output pressure.
5. Repeat steps 3 and 4 until desired calibration is achieved.
Figure 7 - PR-274/275 Low Pressure Transducer Dimensions shown in inches
and millimeters (mm).
1.56"
(40 mm)
2.12"
(54 mm)
S1
S2
ON
ON
MAMAC
9280
Z
Zb
S
5.00" (127 mm)
2.25"
(57 mm)
4.50" (114 mm)
1.12"
(28 mm)
1.12"
(28 mm)
5.50" (140 mm)
3.00" (76 mm) 3.00" (76 mm)
3.25"
(83 mm)
2.50"
( 63.5 mm )
4.00"
(102 mm)
5.00" (127 mm)
2.20"
(56 mm)
6.00" (152 mm)
RoHS
TI.274/275-06
NOTE: The PR-274/275 is a highly accurate device. For
applications requiring a high degree of accuracy, the use of
laboratory quality meters and gauges are recommended.
Panel
Mount
Enclosure
For Technical / Application Assistance call your nearest office
8189 Century Boulevard • Minneapolis, MN 55317-8002 • USA
800-843-5116 • 952-556-4900 • Fax 952-556-4997
[email protected] • www.mamacsys.com
EUROPE
4200 Waterside Centre
Solihull Parkway
Birmingham • West Midlands
B37 7YN • United Kingdom
01384-271113 • Fax 01384-271114
AUSTRALIA
4 Armiger Court, Unit 2
Adelaide • S.A.
5088 • Australia
08-8395-4333 • Fax 08-8395-4433
CANADA
675 Cochrane Drive
East Tower • 6th Floor
Toronto • Ontario
L3R 0B8 • Canada
905-474-9215 • Fax 905-474-0876
ASIA
1 Fullerton Road #02-01
One Fullerton
Singapore • 049213
65-31581826 • Fax 65-31581826
MAMAC Systems, Inc., reserves the right to change any specifications
without notice to improve performance, reliability, or function of our products.