Dickson PR4 Manual De Instrucciones

DICKSON PR4/PR8/PW4/PR8-42
Quick Start
• When installing recorder (1/4" male NPT pressure
connection) always tighten the fitting instead of
twisting the instrument case. Use a 5/8" wrench.
We recommend wrapping the pressure fitting
with pipe tape before installing to prevent leaks.
• Replace chart paper.
• Set time by inserting a coin into the chart hub
and turning clockwise until the correct hour is
referenced to time index clip. Time index clip is
directly to the right and below the pen tip.
Pen Replacement
Simply slide the used pen cartridge off, and slide on the new one. Typical pen life is one year.
Battery Replacement
The battery compartment is located inside the door,
in the lower left section of the dial plate. The recorder
uses a standard "AA" battery. Typical battery life is
one year.
• Turn the cover counter clockwise with a coin to
unscrew the cover.
Calibration
Under normal operating conditions, we recommend
returning the unit to the factory every year for
recalibration against our NIST Traceable standards. In
unusually harsh environments, or where required by
special quality programs, recalibration is recommended
every 6 months.
Periodically check accuracy with a test gauge. If pen
adjustment is required, use the adjusting screw located
inside the door on the upper left corner of the dial plate.
Factory Service and Returns
Contact the factory for a Return Authorization (RA)
Number before returning any instrument. The model
number, serial number and a purchase order number
will be requested before an RA number is issued.
Pressure Recorder Operation
DICKSON
www.dicksonweb.com
930 South Westwood Avenue • Addison, IL 60101-4917
Telephone: 630.543.3747 • Fax: 630.543.0498
E-mail: DicksonCSR@Dicksonweb.com
• Turn the recorder ON. The ON/OFF switch is
located inside the door, on the dial plate. (model
PR4-10 does NOT include ON/OFF switch).
Pressure recorders should not be used to directly
measure pressure of media above 150˚F. If steam
pressure is recorded, use a pigtail siphon filled with
water; the water forms a thermal barrier to isolate the
recorder's pressure sensing system.
• Remove the dead battery and place the new
battery in the holder with the positive end facing
out toward the battery cover.
• Replace the cover and turn clockwise to tighten.
Check two points on the scale when adjusting the pen
to make sure recorder calibration is maintained.
NOTE: When no signal (no pressure) is being
applied to the recorder, the pen may not rest exactly on
the zero chart line. It is possible for the allowable 2%
of scale error to occur at zero, while upscale readings
are increasingly more accurate.
NOTE: Dickson shall not be liable for consequential
or incidental damages resulting form failure or
malfunction of its products.
rev. 03/02