INTRODUCTION
The CR87P is a precision instrument used to monitor and record pressure on a
6” circular paper chart. The CR87P may be carried as a portable instrument or
mounted in a fixed location.
The CR87P offers a variety of features to meet virtually any pressure recording
requirements. A combination of three pressure ranges and four chart speeds
provide a high degree of flexibility. I
Single or Continuous Turn operation as required by a particular application. To
protect the data being recorded the CR87P uses an automatic battery backup to
maintain operation during a power outage.
n addition, the chart rotation may be set for
CR87P FEATURES AND CONTROLS
1. The 3 DIGIT COUNT PRESSURE DISPLAY shows pressure of the environment
being monitored. When the batteries are nearly discharged, the display will alternate
the display reading and “LO” to advise the operator that the batteries are not
charged and the CR87P will shortly cease operation.
NOTE: The battery back
situations where primary power is lost for short periods of up to 48 Hrs. The
CR87P is not intended to be used as a battery powered instrument. If the CR87P
is to be stored for an extended period of time, it is strongly advised to disconnect
the battery pack and remove the batteries to avoid damage to the instrument
from battery leakage.
2. The PRESSURE RANGE SELECTOR allows the user to choose the desired
pressure range for measurement and recording.
3. The CH
chart revolution. The corresponding chart has to be chosen according to the desired
chart speed. Chart part numbers are listed in this manual.
4. The PEN POSITION ADJUSTMENT KNOB allows the user to adjust the position
of the chart pen.
5. The CHART ADVANCE BUTTON allows the operator to set the chart to the
correct time. Press and hold the chart advance button until the desired time lines up
with the Time Pointer (Item 11). The chart is rotated counterclock
CAUTION: Movement of the Chart Spindle (Item 9) by hand may cause
permanent damage to the chart mechanism.
6. The PRESSURE ADJUSTMENT feature allows the user to adjust the reading of
the digital display during periodic calibration. The CR87P has been factory calibrated
and requires no adjustment to meet all published specifications.
7. The POWER ON/OFF / CONTINUOUS / SINGLE CH
the user to supply power to the CR87P and to select Continuous or Single Turn for
ART SPEED SELECTOR allows the user to select the time of one full
up feature of the CR87P is primarily intended for use in
wise only.
ART SELECTOR allows
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the chart rotation. When power is first applied to the CR87P, the display will show
“888” to test each segment of the display, and the pen will move to the edge of the
chart. The pen will then move to the correct position on the chart. I
switch position, the chart will rotate until power is removed. In the Single Turn switch
position, the chart will make one complete revolution and stop. A blinking dot on the
display (Item 1) will indicate that the chart has made one complete revolution and
stopped. To reset the chart for another revolution place the switch in the
Continuous switch position until the blinking dot goes out and then slide the switch
back to the Single Turn position. The chart will make one complete revolution and
stop.
DO NOT move the pen by hand or interrupt the pen movement. Failure to observe
this will cause the pen to read incorrectly and may result in damage to the pen
mecha
nism.
n the Continuous
8. The RECORDING PEN contains special ink
latch which makes the pen replacement “A SNAP!” To replace the pen, gently lift up
the PEN ARM, (do not over bend pen arm) release the pen latch by pushing it down,
and remove the pen; place a new pen on top of the pen arm, align the notches on
the pen arm with the notches on the pen latch and close the latch by wrapping it
around the pen holder until it is secured. Replace cap on the pen tip when the
CR87P is not used to insure long pen life. For pen installation see Fig. 1.
9. The CHART SPINDLE holds and rotates the chart during the recording operation.
DO NOT ROTATE THE SPINDLE BY HAND AS IT MAY DAMAGE THE INTERNAL MECHANISM.
10. The PAPER CHART is 6 inches in diameter. The replacement charts are
available f
charts each. The chart part numbers are listed on the following page.
TO INSTALL A NEW CHART, disconnect power from the CR87P by selecting OFF
with the Power / Single/ Continuous Chart Selector. Place pen cap on pen point.
Gently lift the pen arm and while holding it remove the old chart. Slide a new chart
under the pen holder and the chart holding tabs. Align the chart with the chart
spindle. Apply power to the CR87P and rotate the chart by depressing the chart
advance button until the time pointer is aligned with the line on the chart representing the right time or day. Remove the pen cap. If desired, adjust the pen position
according to the scale you wish to record on.
11. The TIME POINTER is simply a point against which the current time is being
read during a chart rotation. Initially a new chart has to be rotated until the time
pointer shows the right time and day when using a chart.
rom any of Sealed Unit Parts Co., Inc. authorized distributors in a box of 60
. The pen has a wraparound arm
12. The HANDLE for carrying folds towards the back of the case to be out of the
way when CR87P is mounted on the panel or on the wall.
13. The KEYHOLE SLOTS located on the back of the case are provided for wall or
panel mounting.
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14. The REAR COMPARTMENT was designed to store the battery holder for
battery backup as well as the connection for the adapter box.
15. The REMOTE PRESSURE SENSOR is interchangeable. The pressure sensor is
an electronic digital proprietary design for precision and very high interference
immunity. The sensor cable may be extended with an adapter extension cable
available from Sealed Unit Parts Co., Inc. or its distributors.
CAUTION: The pressure sensor is compatible with any gas or liquid that is
compatible with 17-4 stainless steel. Exposure to any corrosive gas or liquid that
will attack
DO NOT PLACE THE CR87P RECORDER DIRECTLY IN AREAS OF EXTREME
PRESSURES, HIGH HUMIDITY OR HEAVY CHEMICAL CONTENTS
16. The BATTERY HOLDER is stored in the rear compartment for backup batteries.
Use of 8 alk
17. The 12VDC PLUG IN WALL ADAPTER provides primary power for the CR87P.
Alternate sources of 12 Volt power may also be used. This allows use of the CR87P
in automotive, marine or other mobile applications.
18. POWER CONNECTOR is a connection point for the 12VDC wall adapter or
alternate source of 12VDC power.
19. Snap on EXTRA SUPPORT LEGS for better stability.
stainless steel can cause damage or failure of the pressure sensor.
aline “AA” batteries is required for proper operation.
CHARTS
PRESSURE CHART SPEEDS
RANGE 6 HRS. 24 HRS. 7 DAYS 31 DAYS
PSI
0-500 PSI 6H500PSI 24H500PSI 7H500PSI 31H500PSI
0-150 PSI 6H150PSI 24H150PSI 7H150PSI 31H150PSI
0-50 PSI 6H50PSI 24H50PSI 7H50PSI 31H150PSI
BAR
0-35 BAR 6H35BAR 24H35BAR 7H35BAR 31H35BAR
0-10 BAR 6H10BAR 24H10BAR 7H10BAR 31H10BAR
0-3.5 BAR 6H3.5BAR 24H3.5BAR 7H3.5BAR 31H3.5BAR
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SPECIFICATIONS
Pressure Range Selectable
PSI Model
Pressure Range Selectable
BAR Model
Chart Speed Selectable 6 Hours, 24 Hours, 7 Days, 31 Days
Chart Speed Accuracy +/-1%
Chart Diameter 6 Inches
Pressure Display 3 Digit LED 0.5”
Pressure Accuracy Better then +/- 1% F.S.
Remote Pressure Sensor 6’ Stainless steel 17-4 Pressure port ¼ NPT,
Power Supply 120 VAC, 50/60Hz., (220/240 VAC 50Hz.
Battery Backup 8 Alkaline “AA” cells (Not included)
Battery Life Continuous, 48 Hours
Operating Ambient Temperature +32°F to +158°F (0°C to +70°C)
Relative Humidity 96% maximum
Dimensions 9 ¼” x 7 ¼” x 2 ¾”
Weight 4 lbs., 7 oz.
0 to 500 PSI, 0 to 150 PSI, 0 to 50 PSI
0 to 35 BAR, 0 to 10 BAR, 0 to 3.5 BAR
Burst Pressure 2500 PSI, rated for any gas
or fluid compatible with 17-4 stainless steel
Optional)
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LIMITED WARRANTY
Sealed Unit Parts Co., Inc. hereby warrants that it will repair or replace, at its option, any part of the CR87P PRESSURE RECORDER or any of the accessories,
which proves defective by reason of improper workmanship or material, free of
charge for parts and labor, for a period of ONE YEAR from the date of original
purchase by the buyer. This warranty does not apply if, in the sole opinion of
Sealed Unit Parts Co., Inc., the CR87P P
accessories, have been intentionally or accidentally damaged due to misuse,
neglect, or improper packing, shipping, modification or servicing, by other than
Sealed Unit Parts Co. Inc., or personnel authorized by Sealed Unit Parts Co. Inc.
For information on how to obtain service under this warranty contact the dealer
where your CR87P was purchased or Sealed Unit Parts Co., Inc. at the address
printed below:
SEALED UNIT PARTS CO.,INC.
P.O. BOX 21
2230 LANDMARK PLACE
ALLENWOOD, NJ 08720
PHONE: (732) 223-6644
FAX: (732) 223-1617
RESSURE RECORDER, or any of the
LIABILITY DISCLAIMER STATEMENT
Sealed Unit Parts Co. Inc. (hereafter k
resentation, or guarantee regarding the suitability of its products for any particular purpose, nor does Supco assume any liability arising out of the application or
use of any product, and specifically disclaims any and all liability, including without limitation consequential or incidental damages.
Supco products are not designed, intended, or authorized for use as components in life support systems, or for any other application in which the failure of
the Supco product could create a situation where personal injury or death or
significant financial loss may occur.
Should any person or person's purchase or use Supco products for any such
unintended or unauthorized application, that person or person's shall indemnify
and hold Supco and its officers, employees, affiliates, and distributors harmless
against all claim
arising out of, directly or indirectly, any claim of personal injury, death or financial loss associated with such unintended or unauthorized use, even if such
claim alleges that Supco was negligent regarding the design or manufacture of
the product in question.
s, costs, damages, and expenses, and reasonable attorney fees
nown as Supco) makes no warranty, rep-
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