Thermo Electron 3940 Series, Руководство по эксплуатации и техническому обслуживанию

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R70-32 (WEB)
REV(12-04) D
should briefly stop at the outer most temperature
graduation of the chart before continuing onto the
chart to begin recording. If the pen does not stop
exactly at this location on the chart, it can be adjusted
or "calibrated" by using the left (#1) or right (#2)
arrow buttons (refer to Figure 3).
When the pen moves back onto the chart and briefly
stops, you will have approximately five (5) seconds in
which to adjust the pen's position using the left and
right arrow buttons of Figure 3.
On multiple pen recorders, each pen will move (one-
at-a-time) onto the chart briefly stopping at the outer
most temperature graduation of the chart at which
time the pen's position can be adjusted by using the left
(#1) or right (#2) arrow buttons. When the time to
adjust the position of the first pen has expired, the
second pen will move onto the chart briefly stopping
at the outer most temperature graduation of the chart
at which time the second pen's position may be
adjusted.
Each time the chart paper or fiber tip pen cartridge is
changed, you should make sure that each pen stops at
the outer most temperature graduation of the chart
paper. Otherwise, this pen
offset will cause the unit to
record an incorrect temperature on the chart.
TEMPERATURE RECORDER
CALIBRATION CHECK
This recorder has been accurately calibrated at the
factory. Before making any adjustments, this
instrument should be in service for 24 hours.
Thereafter, if any adjustment is required, perform the
following procedure.
Important: DO NOT immerse
a Temperature/Humidity probe in any solution.
1. Place a Certified Test Thermometer(s) in a
solution bottle(s) alongside the recorder's sensor
probe(s).
2. Once the temperature has leveled out, compare the
position of the pen on the recorder to the test
thermometer's reading.
2a. For two (2) pen recorders, also compare the
second thermometer's reading to the second pen of
the recorder.
3. If an adjustment is required, use the left (#1) and
right (#2) arrow push buttons on the recorder to
calibrate (or move) the pen's position on the chart
to correspond to the temperature of the solution.
The arrow buttons must be held for approximately
five (5) seconds before the pen will begin to move.
3a. For two (2) pen recorders, you must first select
the pen that you wish to calibrate. This is done by
pressing the left (#1) arrow button to select the
red pen or the right (#2) arrow button to select the
blue pen. The arrow button must be held down
until the green LED light goes out. After the green
LED light goes out, follow the instructions in step
#3 above. (Refer to the following figure for a
diagram of the push buttons).
Figure 3: Push buttons.
OPTIONAL FEATURES
BATTERY BACK-UP
The green LED light remains a constant green color
indicating that both the battery and the main power to
the unit are good. Refer to Figure 5 for the location of
the green LED indicating light. If the AC power were
to fail or the battery becomes weak, then the green
LED light will begin "flashing" indicating that either
you have lost the main power to the unit or it is time
to replace the battery. Having a 9 volt DC battery
back-up in place, will allow the recorder to continue to
function normally for approximately 24 hours in the
event of a power failure.