Rev. 06/03
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Keypad Operation
On/Off
When you press the “ON/OFF” key the pens will
move to the correct reading.
Alarm Set
The alarm set keys are labeled with arrows that
point up and down. You can set a minimum and
maximum alarm for both of the two variables you
are recording.
1. To set the alarms press the “ALARM SET” key.
The MIN symbol will be displayed and the
temperature will flash. (Note: The alarm set
function always starts with temperature. If
you do not want an alarm to sound for
temperature readings set the alarms for points
that are outside of the range.)
2. Use the up arrow button to increase the
minimum temperature alarm setting and the
down arrow to decrease the minimum
temperature alarm setting.
3. Press “ALARM SET” key a second time. The
MAX symbol will appear and the temperature
will flash indicating that you can now set the
maximum temperature alarm. Use the same
procedure as in step 2 above for setting the
temperature maximum alarm setting.
4. Press the “ALARM SET” key a third time and
the MIN symbol will appear and humidity
(or dew point dip switch #5 is on) will flash.
Use the same process as in steps 2 and 3
above to set humidity and dew point alarm.
5. When you have set alarms for both variables
press “ALARM SET” a final time to lock in
settings.
The defaults for alarm settings are:
Temperature: +40°F min to +110°F max
Humidity: 20% min, 80% max
NOTE: Alarm settings will return to the default when
AC power fails and there are no batteries installed
for back-up power.
Alarm ON/OFF
This button turns the alarms on and off. When
alarms are “ON” the alarm symbol appears on the
display. When alarm sounds it will sound audibly for
approximately 1 minute and then it will stop. For a
visual, the variable that has moved outside of the
minimum or maximum points that you set will flash
(i.e. if you set a maximum alarm for +80°F and tem-
perature r80°F the temperature portion of
the display will flash).
MIN/MAX
1. Press the “MIN/MAX” key once and the
minimum values, during the recording time,
will be displayed for 7 seconds.
2. Press the “MIN/MAX” key again and the
maximum values, during the recording time,
will be displayed for 7 seconds.
3. Press the “MIN/MAX” key a third time during
this period and the display will show current
readings. The unit will always return to current
readings mode after 7 seconds.
NOTE: Turning the unit off resets the minimum and
maximum values.
Pen Home
Press the “PEN HOME” key while the unit is operat-
ing and the pens move to the outside of the chart.
Press the “PEN HOME” key again and the pens will
return to current reading points on the chart.
Display Change
Press the “DISPLAY CHANGE” key and the display
will temporarily show the reading opposite of what
is being recorded (i.e. if dip switch #5 is off and
you are recording the RH, pressing the “DISPLAY
CHANGE” key will temporarily change the display to
show the dew point reading).
NOTE: If the unit does not respond to keypad, check
to see that dip switch #8 is off.
ON/OFF
MIN/MAX
DISPLAY
CHANGE
PEN
HOME
ALARM
SET
ALARM
ON/OFF
Figure 3
