Love CR20 Manual De Funcionamiento página 5

Dip Switch Set-Up
To set-up the CR20 for your specific application you might need
to change some of the dip switches. The switches are located
under the chart in the lower half of the dial plate. A pointed object
can be used to change the settings.
In battery mode, you may need to push the up arrow key after
establishing the new dip switch setting.
Remember to install correct chart to match corresponding dip
switch setting.
Recording Time
The CR20 has four different recording time options: 1 day, 7 day,
14 day and 31 day. Dip switches #1 and #2 control the recording
time.
1 day #1 Off
#2 On
7 day #1 Off
#2 Off
14 day #1 On
#2 Off
31 day #1 On
#2 On
Range
You can record different signals with the CR20 by using dip
switch #3 in conjunction with V/mA switch in back of recorder.
0-5V or 0-20mA
1-5V or 4-20mA
Calibration
Your instrument was carefully tested and calibrated before being
shipped from the factory. Additional calibration is not required.
However, should field calibration be desired in the future, follow
these procedures:
1. There are two phases of calibration. One is the unit calibration
which should be performed using an accurate electronic sig-
nal generator. The second phase is calibrating the unit in con-
junction with the transmitter to be used. When calibrating with
a transmitter, a compatible standard should be used. For
example use a highly accurate temperature standard to cali-
brate the CR20 using a temperature transmitter.
2. The calibration procedure is the same whether calibrating the
unit only, using an electrical signal calibrator, or calibrating the
unit in conjunction with a transmitter. When calibrating with a
transmitter, the calibration must be performed using a sepa-
rate standard with which to adjust the unit and transmitter.
Chart Installation
1. Press the pen home key to make the pen move to the out-
side of the chart.
2. Press the pen lifting bar to raise the pen. Remove the record-
ed chart if present.
3. Place the appropriate chart on the chart hub – being certain
that the edge of the chart slides under the chart guide clips
#3 Off
#3 On
Note: The V/mA switch on the back of your CR20 controls which
signal your recorder will read: volts or milliamps.
Reading Range
The CR20 will record in many ranges. Dip switch #4, #5, #6 and
#7 allow you to select the range.
0 to 100.0
0 to 140.0
0 to 150.0
0 to 200.0
0 to 250.0
0 to 300.0
0 to 450.0
0 to 500.0
0 to 600.0
40.0 to 110.0
-10.0 to 10.0
-15.0 to 25.0
-20.0 to 50.0
-20.0 to 120.0
-30.0 to 50.0
-50.0 to 50.0
Keypad Lock
For security purposes it is possible to lock the keypad with the
use of dip switch #8.
Keypad Unlocked
Keypad Locked
3. To activate the calibration mode, turn the unit off, Now press
the "On/Off" key and the up arrow key at the same time (This
procedure is easiest if the unit is lying on its back). The "UC"
symbol will appear in the upper right portion of the display to
indicate you are in the "User Calibration" model
4. To raise the reading press the "Up Arrow" key. To lower the
reading press the "Down Arrow" key. Be careful to wait sever-
al seconds between each key press to give the unit sufficient
time to respond.
5. When calibration is complete simply press the "On/Off" key to
save the calibration settings.
Calibration is stored in memory even after you turn the unit off.
User calibration information will not be lost if AC power fails.
Note: Voltage and milliamp ranges must be calibrated indepen-
dently.
located at the outside of the chart. Be sure the chart is
appropriate for the output setting chosen via the dip switch-
es.
4. Set time by inserting a coin into the groove in the chart hub
and turn clockwise until the correct hour (and day if applica-
ble) on the chart is referenced to the timing clip.
5
#4 #5 #6 #7
Off Off Off Off
On Off Off Off
Off On Off Off
On On Off Off
Off Off On Off
On Off On Off
Off On On Off
On On On Off
Off Off Off On
On Off Off On
Off On Off On
On On Off On
Off Off On On
On Off On On
Off On On On
On On On On
#8 Off
#8On