CR87B FEATURES AND CONTROLS
1. The 3 DIGIT TEMPERATURE DISPLAY shows temperature 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 discharged and the CR87B will shortly cease operation.
NOTE: The battery backup feature of the CR87B is primarily intended for use in
situations where primary power is lost for short periods of up to 48 hours. The
CR87B is not intended to be used as a battery powered instrument. If the CR87B
is to be stored for an extended period, it is strongly advised to disconnect the
battery pack and remove the batteries to avoid damage to the instrument from
battery leakage.
2. The TEMPERATURE RANGE SELECTOR allows the user to choose the desired
temperature range for measurement and recording.
3. The CHART SPEED SELECTOR allows the user to select the time of one full
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. The chart is rotated counterclockwise only. CAUTION:
Movement of the Chart Spindle (Item 9) by hand may cause permanent
damage to the chart mechanism.
5a.The TIME POINTER
6. TEMPERATURE ADJUSTMENT feature allows the user to adjust the reading of
the digital display during periodic calibration. The CR87B has been factory
calibrated and requires no adjustment to meet all published specifications.
7. The POWER ON/OFF / CONTINUOUS / SINGLE CHART SELECTOR allows the
user to apply power to the CR87B and to select Continuous or Single Turn for the
chart rotation. When power is first applied to the CR87B, 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. In the
Continuous 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 mechanism.
8. The RECORDING PEN contains special ink. The pen has a wrap-around arm
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
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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 CR87B 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 from any of Sealed Unit Parts Co., Inc. authorized distributors in a
box of 60 charts each. The chart part numbers are listed on the following page.
TO INSTALL A NEW CHART disconnect power from the CR87B 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 CR87B 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.
11.The ROTATION POINTER indicates direction of chart rotation.
12. The HANDLE for carrying folds towards the back of the case to be out of the
way when CR87B 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.
14. The FRONT COMPARTMENT under chart was designed to store the battery
holder for battery backup as well as the connection for the adapter box.
15. The REMOTE TEMPERATURE SENSOR is interchangeable. The furnished 4"
stainless steel sensor has 15 feet of cable. The temperature sensor is an
electronic digital proprietary design for precision and very high interference
immunity. It utilizes the standard RCA connector. The sensor cable may be
extended with an extension cable available from Sealed Unit Parts Co., Inc. or
its distributors.
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16. The BATTERY HOLDER is stored in the front compartment for backup batteries.
Use of 8 alkaline “AA” batteries is required for proper operation.
17. The 12VDC PLUG IN WALL ADAPTER provides primary power for the CR87B.
Alternate sources of 12 Volt power may also be used. This allows use of the CR87B
in automotive, marine or other mobile applications.
18. The POWER CONNECTOR is a connection point for the 12VDC wall adapter or
alternate source of 12VDC power.
19.Back Brace for counter top use.
CHARTS
Temperature Chart Speeds
Ranges 6 Hours 24 Hours 7 Days 31 Days
-40°F to +30°F CR87-4 CR87-1 CR87-7 CR87-19
-20°F to +50°F CR87-5 CR87-2 CR87-8 CR87-20
+50°F to +120°F CR87-6 CR87-3 CR87-9 CR87-21
-40°C to 0°C CR87-13 CR87-10 CR87-16 CR87-22
-30°C to +10°C CR87-14 CR87-11 CR87-17 CR87-23
+10°C to +50°C CR87-15 CR87-12 CR87-18 CR87-24
SPECIFICATIONS
Temperature Scale Selectable -40°F to +30°F, -20°F to +50°F,
(Fahrenheit Model) +50°F to +120°F
Temperature Scale Selectable -40°C to 0°C, -30°C to +10°C,
(Celsius Model) +10°C to +50°C
Chart Speed Selectable 6 Hours, 24 Hours, 7 Days, 31 Day
Chart Speed Accuracy +/-1%
Chart Diameter 6 Inches
Temperature Display 3 Digit LED 0.5"
Temperature Accuracy +/-2°F (+/-1°C)
Temperature Sensor Stainless steel tip submersible with 15 ft. of
cable
Recording Pen Ink Type
Power Supply 120 VAC, 50/60 Hz. or 220/240 VAC, 50Hz.
Battery Backup 8 Alkaline “AA” cells (Not included)
Battery Life 48 Hours
Operating Ambient
Temperature Range +32°F to +120°F (0°C to +49°C)
Relative Humidity 96% maximum
Dimensions 9 ¼” x 7 ¼” x 2 ¾”
Weight 4 lbs., 7 oz.
CAUTION: The Temperature Recorder should be placed outside the chamber being
monitored. DO NOT PLACE THE RECORDER DIRECTLY IN AREAS OF EXTREME
TEMPERATURES, HIGH HUMIDITY OR HEAVY CHEMICAL CONTENT.
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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 CR87B Temperature Recorder, 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 CR87B Temperature Recorder has been intentionally damaged
due to misuse, neglect, improper packing, shipping, modification of 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 CR87B Temperature Recorder was
purchased, or Sealed Unit Parts Co., Inc. at the address printed below:
Liability Disclaimer Statement
Sealed Unit Parts Co., Inc. (hereafter known as Supco) makes no warranty,
representation, 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 persons purchase or use Supco products for any such
unintended or unauthorized application, that person or persons shall indemnify and hold Supco, and its officers, employees, affiliates, and distributors
harmless against all claims, costs, damages, expenses, and reasonable
attorney fees 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.
Test Equipment Depot - 800.517.8431 - 5 Commonwealth Ave, MA 01801
EquipmentDepot.com
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