Alarm Relays (Not used on this model)
The SPST 24V 500mA relay contacts are normally open and will close
on alarm conditions when the alarms are enabled. Relay contacts are
always functional when the alarm is enabled. Dip Switch #8 has no
effect on the relay. The relay will close only during minimum and
maximum alarm conditions.
Display Symbols
C
- Indicates
°
C
F
- Indicates
°
F
O
- Zero calibration mode.
A
- Alarms enabled or alarm set mode.
MIN
- This symbol is displayed when you are setting a minimum alarm
or during a minimum alarm condition when alarms are enabled.
MAX
- This symbol is displayed when you are setting a maximum alarm
or during a maximum alarm condition when alarms are enabled.
LED
- The LED will be green whenever the unit is activated. The LED
will flash green during initialization and warm-up. The LED showing red
indicates the unit is in calibration mode. The LED turns orange during
shut down.
Dip Switch Set-Up
To set-up the recorder for your specific application, you might need to
change some of the Dip Switches. The Dip Switches are located
underneath the chart. Use a pen or small screwdriver to flip the
switches. Switches 1 and 2 not used, set to off.
Factory switch settings 1-8: 00011010 (0 = Off, 1 = On)
Recording Time
The recorder has two different recording options: 24 hour and 7 day.
Dip switch #3 controls the recording time.
1 Day
#3 On
7 Day
#3 Off
°
F/
°
C
You can record in
°
F or
°
C with by changing Dip Switch #4
°
C
#4 On
°
F
#4 Off
Temperature Range
The temperature range is controlled by Dip Switches #5, #6 & #7.
-50 to +50
#5 On
#6
Off
#7
On
0 to 50
#5 On
#6
Off
#7
Off
0 to 100
#5 Off
#6
Off
#7
Off
Alarm Speaker (Not used on this model)
The alarm speaker may be activated or deactivated with the use of dip
switch #8. The alarm speaker will sound during minimum, maximum or
probe missing alarm conditions.
Deactivated
#8
On
Activated
#8
Off
Note:
Dip switches 1 & 2 are not active on this recorder
Calibration
Your instrument was carefully tested and calibrated before leaving the
factory. Additional calibration is not required. However, if you wish to
calibrate the recorder yourself, follow these procedures.
1. Identify a standard that is more accurate than this unit.
2. Place the probe of the unit and the standard into a controlled
environment, allowing the unit to completely stabilize. For best
results, calibrate the unit at levels typically monitored during normal
operation.
3. To activate the calibration mode, turn the unit off. Now press the
ON/OFF key and the ALARM key at the same time. The unit is in the
“User Calibration” mode when the red LED is on. The display will
show a C during the warm-up period and then will flash between 0
and F or 0 and C (depending on the measurement selected). Match
the reading of the recorder to the reading of the reference standard.
4. To raise the temperature press the TIME (Up Arrow) key. To lower
the temperature, press the HOME (Down Arrow) key.
To ensure you have matched the standard allow the pen to stabilize for
at least 30 seconds before exiting calibration mode.
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.
Chart Installation
Use the following procedure to install or replace a chart in the recorder.
1. Open the door by pressing the door latch.
2. Press the HOME key to move the pen to the pen lift position. The
pen is automatically raised off the chart.
3. Remove the old chart, place the appropriate new chart on the chart
hub - being certain that the edge of the chart slides under the chart
guide clips located at the outside of the chart.
4. Press the HOME key to move the pen onto the chart.
5. Set the time by pressing the TIME key, which rotates the chart. The
chart will continue to rotate until the key is released. Release the
TIME key when the appropriate time is indicated at the time indicator
clip.
Pen Installation
A disposable fiber-tipped pen is installed in the recorder, when pen
replacement becomes necessary, use the following procedure.
1. Press the PEN HOME key to return the pen to the home position.
2. Gently lift the pen and slide it off the pen arm.
3. Slide the new pen onto the pen arm until the notch in the pen is
secure to the pen arm.
4. Remove the pen cap. Insert it on the pen cap holder
located on the
dial plate of the recorder.
5. Press the PEN HOME key to return the pen to the recording position.
Note:
To prolong pen life, replace pen cap when recorder is not in
use.
Trouble Shooting
Symptom Cause Check/Remedy
Pen trace to fine or
absent.
Tip too sharp,
cartridge dried
out.
Sand tip, moisten or
replace pen.
Readings of pen and
display do not match
exactly.
Wrong chart; Pen
not on properly;
Line thickness
Check Dip Switch 4, 5 & 6;
Push pen completely onto
pen arm; Verify that
proper chart is installed.
Out of Calibration or
Questionable
Accuracy
Harsh
environments
See calibration procedure
in this manual.
Und (display)
Below Range of
recorder
Check temperature range.
Ovr (display)
Above range of
recorder
Check temperature range.
Prb (display)
Probe missing
Plug K-thermocouple into
back of the recorder.
Replacement Parts
Item Part
Number
7- Day Chart, -50 to +50
°
F/
°
C
SPN 103194
7- Day Chart, 0 to 50
°
F/
°
C
SPN 102989
Pens, 6/Pack, Red
13-940-997
