Dickson KT8 User manual

REV 09/2019
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Web: DicksonData.com
Telephone: [phone]
Email: [email protected]
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Addison, IL 60101
KT8
8” TEMPERATURE CHART RECORDER
USER MANUAL &
PRODUCT GUIDE
BATTERY COMPARTMENT
DIP SWITCHES
ADJUST BUTTONS
AC ADAPTER
REPLACEABLE
SENSOR™ PORT
REFERENCE GUIDE
REPLACEABLE SENSOR™
CERTIFICATE OF VALIDATION
Dickson ensures that the Replaceable Sensors™ /
Instruments listed below were developed, tested
and validated together.
Replaceable Sensor™ Model: R400
Instrument Model: KT6P1, KT6P2, KT6P5
Operation: The Instruments and Replaceable
Sensor™ models listed above were specifically
designed to work together. No other sensors
will work with the Instrument models listed. No
other Instrument will work with the Replaceable
Sensors™ listed. The Replaceable Sensor™ must be
connected to the Instrument for the Instrument to
operate properly.
Calibration: Only the Replaceable Sensor™ is
calibrated. The sensor, and all calibration defaults
and adjustments are stored on the Replaceable
Sensor™. Accuracy is strictly controlled by
the sensor – no adjustments are made by the
Instrument. Readings are sent from the Replaceable
Sensor™ to the Instrument for storage purposes
only. Certificates of Calibration / NISTs are only
supplied for the Replaceable Sensor™ for this
reason.
Recalibration: When a Replaceable Sensor™ is due
for recalibration the existing Replaceable Sensor™
can be replaced with a new Replaceable Sensor™
thus eliminating the need to return the entire
instrument for recalibration. Replaceable Sensors™
can be returned for recalibration as well.

If KT856 two pen model, the additional options are:
»Pen 2 ALARM minimum
»Pen 2 ALARM maximum
3. In order to set pen(s) ALARM minimums and maximums,
pressing ADJUST-UP will increase the ALARM value,
and pressing ADJUST-DOWN will decrease the ALARM
value. There is acceleration if the ADJUST-UP button is
held down.
Repetitively pressing the PEN HOME button will scroll
through the five options until the ALARM button is
pressed to exit from ALARM adjust. Each press of the
PEN HOME or ALARM button will store the new settings.
The unit will take one minute to exit ALARM Set Mode
once the ALARM button is pressed.
4. If the ALARM is triggered, the LED will show as solid red
and the ALARM will sound. Press the ALARM button to
silence the audible ALARM.
ALARM RELAYS
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. The relay will close only during
minimum and maximum ALARM conditions. The KT856
has 2 sets of relay contacts which operate independently.
Relays will not operate under battery only power
conditions.
The blue pen has a longer pen arm and records channel
2 temperature (depending on your dip switch selection).
The red pen has a shorter arm and records channel 1
temperature. The pens are oset to allow the red pen to
glide under the blue pen. The blue pen indicates the correct
time and the red pen precedes it by 3/16 of an inch.
7DAY CHART ROTATION
0 TO 100°F
IMPORTANT
Dickson Chart Recorder accuracy specifications are only valid with the use of authentic
Dickson brand charts and pens. The specifications for chart printing, die cutting and paper
absorption rates, and the complementary bleed rate specifications of pens are critical factors
in determining system accuracy.
TO BEGIN OPERATION
1. Remove the protective pen cap(s).
2. Connect probe(s).
a. KT8P0/2/3: Make sure the KTC probe is connected
firmly to the Replaceable Sensor™ and that the
Replaceable Sensor™ is plugged in firmly to the
chart recorder.
b. KT856: Make sure the KTC probe is connected
firmly to the Replaceable Sensor™ and that the
Replaceable Sensor™ is plugged in firmly to the
chart recorder.
3. Insert batteries and plug in AC adapter (See Figure 3).
a. KT8P0:4 AA batteries required
b. KT8P2/3 & KT856: 4 AA batteries backup power only.
Unit will power on.
4. The instrument will move pen(s) to the appropriate
readings.
5. Install the chart that matches the DIP SWITCH settings.
6. Press the PEN HOME key to move the pen(s) to the
outside of the chart. The pen(s) is automatically raised
o the chart.
7. Remove the old chart, place the new chart on the
CHART HUB being certain that the edge of the chart
slides under the Chart Guide Clip located at the outside
of the chart.
8. Set the appropriate time. There are two ways to adjust
the chart and set the appropriate time:
a. Set the chart time manually by inserting a coin into
the groove in the chart hub and turning clockwise
until the correct hour (and day if applicable) on the
chart is referenced to the timing arrow (just to the
right of the pen tip on the dial). Press PEN HOME to
move the pen(s) back onto the chart.
b. To adjust the chart time, press and hold ADJUST-UP
and ADJUST-DOWN buttons located on the back of
the unit next to the dip switch.
The green LED will blink rapidly for about five
seconds, then the LED will remain solid green.
While in this state the ADJUST-UP button will move
the chart backward (counter clockwise) and the
ADJUST-DOWN button will move the chart forward
(clockwise).
Rotate the chart until the correct hour (and day if
applicable) on the chart is referenced to the timing
arrow. Once you have set your chart, press the PEN
HOME button to exit Chart Adjust Mode. The unit
will take one minute to exit the Chart Adjust Mode
once PEN HOME is pressed. Press PEN HOME to
move the pen(s) back onto the chart.
c. Place the KT8 recorder on a flat vibration-free
surface. Be sure it is in a vertical position and level.
For best performance and longevity, the location
should be a clean environment, free from dust
and corrosive fumes. Do not exceed temperature
specifications. Wall Mount: Keyhole slots are
provided on the KT8 recorder for wall mounting.
GETTING STARTED
QUICK START
2
ON/OFF
The ON/OFF key turns the unit on and o.
PEN HOME
If the pen is located on the outside edge of the chart, press
PEN HOME to move pen to recording position. If the pen is
located on the chart, press PEN HOME to move the pen to
the outside edge of the chart.
ALARM OPTIONAL
»Pen 1 =Red Pen
»Pen 2= Blue Pen
1. To set the ALARM, make sure unit is on and press and
hold the ALARM button. The LED will blink red rapidly
for about five seconds, then the LED will turn solid
green. Release the ALARM button and the LED will turn
solid red. At this point the display will show “On” or
“O”.
Pressing either the ADJUST-UP or ADJUST-DOWN
buttons, located on the back of the unit next to the dip
switch, will toggle the ALARM on or o.
2. Pressing PEN HOME will scroll to the next ALARM
options.
»Pen 1 ALARM minimum
»Pen 1 ALARM maximum
BUTTON OPERATION
PENS
1
2
3
4
5
6
CH1 = PINS 1,2,3
• Pins 1 and 2 make contact
when CH1 is in alarm
• Pins 1 and 3 make contact
when CH1 is not in alarm
CH2 = PINS 4,5,6
•
Pins 4 and 5 make contact
when CH2 is in alarm
• Pins 4 and 6 make contact
when CH2 is not in alarm
The KT8 operates on AC power with an optional 4 AA
battery backup. Depending on chart rotation selected and
model, battery backup will last:
KT8P2/3 AND KT865
»24 Hour Chart Rotation = 1 day backup
»7 Day Chart Rotation = 2 day backup
»31 Day Chart Rotation = 1 week backup
Note: ALARM and relays will not operate under battery
only power.
KT8P0 at 70°F
»24 Hour Chart Rotation = 1 month backup
»7 Day Chart Rotation = 6 month backup
KT8P0 at 32°F
»24 Hour Chart Rotation = 3 week backup
»7 Day Chart Rotation = 4 month backup
Note: Unit should not be placed in an environment
below 32°F
LED Indicators
• Solid Green —AC Power with Battery Backup
• Flash Red —AC Power with Low Battery or No Battery
• Blinks Green — Battery Only
• Solid Red — Battery Only (Low Battery)
Note: KT8P0 operates on battery only and will blink
one time every minute to conserve battery life.
POWER
3
PEN
HOME
POWER
LED
ON/OFF
ALARM
(Alarm button on KT8P3/KT856 only)
If over time the pen location does not match the display,
you may need to adjust the pen location on the chart. A
PEN HOME Adjustment will not aect calibration of the
sensor, but rather corrects for the natural drift that occurs
with mechanical moving parts over time.
1. While the unit is on, press and hold both PEN HOME
and ON/OFF buttons until the LED is solid green.
Release the PEN HOME and ON/OFF BUTTONS. The
LED will flash amber and green for one second then the
LED will turn o.
Note: Press PEN HOME first so the unit will not turn o
2. The pen(s) will move to the outer edge of the chart and
the shorter red pen will move to the outer chart ring
(max temperature/RH line). If the red pen tip does not
PEN HOME ADJUST

1. Flip pen arm up and away from chart. Slip your finger under the chart and lift the chart o the CHART HUB
2. Put one new chart on the recorder
3. Make sure the center of the chart, between CHART HUB, is not torn
4. Set the time by inserting a coin in CHART HUB and turning clockwise until the current hour is referenced by the
time indicator
5. Flip pen arm down
5
1
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PEN ARM
LCD DISPLAY
CHART GUIDE
CLIP
CHART HUB
CHART
PEN
CHART REPLACEMENT
PEN REPLACEMENT
1. Flip pen arm up
2. Slide used pen cartridge o pen arm
3. Slide new pen cartridge on pen arm
4. Make sure end of pen arm comes into contact
with pen tip
5. Remove pen cap
6. Flip pen arm down
PEN CARTRIDGE PEN ARM
SLIDE OFF
TOP SIDE OF PEN
BOTTOM SIDE OF PEN
SLOT
PEN TIP
SLIDE ON
PEN ARM
4 5
KT8P0/2/3:
The R400 Replaceable Sensor was carefully tested and
calibrated before being shipped from the factory.
To order a Calibrated Replaceable Sensor™, call customer
service at [phone] or go to DicksonData.com. When
your new Replaceable Sensor arrives, simply turn o the
recorder, remove and discard the old sensor, plug in the
new one and power the recorder back on. Your recorder
will continue to record temperature and humidity without
interruption.
KT856:
The KT856 was carefully tested and calibrated before
being shipped from the factory.
CALIBRATION
If you have an accurate standard to compare against, the
Replaceable Sensor or unit (KT856) calibration can be
adjusted at one point. This will not adjust the span and
is not as accurate as replacing the Replaceable Sensor
with a newly calibrated one, or returning the KT856 for
recalibration.
1. To activate Calibration mode, turn the unit on and press
and hold both the On/O and the ADJUST-DOWN
button until the LED is solid green. The LED will then
blink amber at which point only the pen being adjusted
will show on the display.
Note: Make sure to press the ADJUST-DOWN button first so
the unit will not turn o
2. To raise the unit of measurement, press the ADJUST
DOWN button. To lower the unit of measurement, press
the ADJUSTUP button. Pressing PEN HOME switches
between the red and blue pens on a two pen unit and
stores the current adjustment value.
3. When Calibration is complete, press the ON/OFF
button. The adjustment is stored in memory even after
you turn the unit o or if AC power fails.
Note: After two hours, if no buttons are pressed, the unit
will time out of Calibration mode and resume normal
operation. If you wish to cancel the Calibration, simply
enter Calibration mode and toggle through the steps
without adjusting displayed readings. Exit by pressing the
On/O button. You have now restored factory calibration
settings.
Note: It is recommended that you use a controlled chamber
when determining if Calibration is necessary. Adjusting
the pen locations in an open room is not recommended as
humidity can vary greatly within a very small area.
Note: User calibration invalidates Dickson’s Certificate of
Calibration.
The pen movement for the KT8P0 is slower than on the
AC powered models in order to conserve battery power.
In 24-hour mode the pen(s) will move every 1 minute and
30 seconds. In 7-day mode the pen(s) will move every 8
minutes and 30 seconds. The recorder takes temperature
readings every 50 seconds. An average of the reading
taken between pen(s) movements is what is drawn on the
chart.
USER CALIBRATION
NEED TO KNOW
line up with the outer chart ring, use the ADJUSTUP
and ADJUSTDOWN buttons (on the back of the unit)
to move the red pen so that the pen tip is on top of the
outer chart ring.
3. Once set, press ON/OFF to save and exit PEN HOME
adjust. If using KT856 continue to step 4 below.
4. Once the shorter red pen is set, press PEN HOME to
move the shorter red pen to the outer edge of the chart.
The longer blue pen will move to the outer chart ring.
If the blue pen tip does not line up with the out chart
ring, use the ADJUSTUP and ADJUSTDOWN buttons
to move the blue pen so that the pen tip is on top of the
outer ring.
5. Once the blue pen is set, pressing the PEN HOME
button will move the longer blue pen to the outer edge
of the chart and the shorter red pen will move to the
outer chart ring.
6. Each time PEN HOME is pressed, the two pens will
switch positions (moving the most recently adjusted
position) until ON/OFF is pressed to exit pen adjust
mode.
Note: Pressing the ON/OFF button will exit the
adjustment and return the unit to normal operation.
Each time the PEN HOME or ON/OFF button is pressed,
the adjustment currently in progress will be stored.
The unit will take one minute to exit Pen Adjust Mode
once the ON/OFF button is pressed.
PEN HOME ADJUST (CONT.)

Why isn’t the chart keeping time or running slow?
• The chart may be hung up or restricted, possibly
caused by a rip on the outer edge of the chart
or the CHART HUB, or the chart may be caught
between the arm and pen(s) arm platform.
• Incorrect chart installed for the selected chart
speed.
Why did the chart stop turning?
• Chart hung up or restricted, (ripped chart)
• Unit may be “locked up”, this can be confirmed
by pressing any of the buttons on the keypad, if
the unit is locked up there will be no response
to button presses and the Chart Recorder may
appear to be working, but the readings won’t
change, also the chart will not rotate. Remove
power and battery, and then re-power.
Why don’t the display and chart match?
 DIP SWITCHES set for a specific range, but using
chart for another range, or vice versa.
• Pen(s) not inserted on pen arm(s) all the way
• To adjust pen(s) to match chart see “PEN HOME
Adjust” section of this manual.
Why does the display read PROB?
• Check the sensor pod and KTC probe(s). Make
sure it is properly plugged into the unit.
• Is the unit locked up? This can be confirmed by
pressing any of the buttons on the keypad, if
the unit is locked up there will be no response
to button presses and the unit may appear to be
working, but the readings won’t change, also the
chart will not rotate. Remove power and battery,
and then re-power.
Why does calibration seem to be o?
• What is the tolerance of the unit it’s being
compared to? It’s ok if the unit is within the sum
of the two tolerances.
• Has an outside calibration house attempted
calibration? It may not have been adjusted
properly.
• Walk through calibration adjustment, found in
the manual
Why won’t the battery back-up work?
• Are there good batteries in the chart recorder?
• Keep in mind that battery backup varies
significantly depending on temperature, pen
movement and chart rotation speed.
• If there was a momentary power outage (Brown
out), the unit may not have had enough time to
recognize this and switch to battery mode. (The
Chart Recorder may lock up or shut o in this
situation) This situation may also occur if the unit
is plugged into an outlet that shares the circuit
with other machinery that has phase motors or
compressors that cycle periodically. As these
other machines cycle, they momentarily have a
high current draw, therefore drawing from the
unit.
Why won’t the chart recorder respond to changes?
• Is the unit locked up? This can be confirmed by
pressing any of the buttons on the keypad, if
the unit is locked up there will be no response
to button presses and the unit may appear to be
working, but the readings won’t change, also
the chart will not rotate. Remove power and
batteries, and then re-power.
Why won’t the unit power up?
• Remove the batteries and power adapter for a
minute or two, this will reset the unit. The unit
should respond when the adapter is plugged in.
Dickson warrants that this line of instruments will be
free from defects in material and workmanship under
normal use and service for a period of twelve months
after delivery.
This warranty does not cover routine calibration and
battery replacement. For Specifications and Technical
Support go to DicksonData.com
Contact Customer Service at 630.543.3747 for a Return
Authorization Number (RA) before returning any
instrument. Please have the model and serial numbers
and PO ready before calling.
Note: Dickson shall not be liable for consequential
or incidental damages resulting from failure or
malfunction of its products.
FAC
TROUBLESHOOTING
WARRANTY
FACTORY SERVICE AND RETURNS
6 7
To setup the KT8 recorder for your specific
application, you might need to change some of the
DIP SWITCHES. The DIP SWITCHES are located on the
back of the unit. Use a pen or small screw driver to
flip the switches.
Remember to install the correct chart to match the
corresponding DIP SWITCH setting.
DIP SWITCH SETUP
RECORDING TIME
7 Day (all models) #1 DOWN — #2 DOWN
24 Hour (all models) #1 DOWN — #2 UP
31 Day (KT8P2/3, KT856) #1 UP — #2 UP
RECORD IN °F OR °C
°F #3 DOWN
°C #3 UP
TEMPERATURE RANGE
Select the temperature range that matches the chart paper
0° to 100° F/C #4 DOWN —#5 DOWN —#6 DOWN
-50° TO 50° F/C #4 DOWN —#5 DOWN —#6 UP
0° TO 250° F/C #4 DOWN —#5 UP — #6 UP
0° TO 500° F/C #4 UP — #5 DOWN — #6 DOWN
0° to 150° F/C #4 DOWN — #5 UP — #6 DOWN
-20° to 20° F/C #4 UP — #5 UP — #6 UP
0° to 1000° F/C* #4 UP — #5 DOWN — #6 UP
0° to 2000 F/C* #4 UP — #5 UP — #6 DOWN
* A203 High Temp Probe required. Range not available on Model KT8P0.
1 2 3 4 5 6 7 8
Slide toggle UP for ON position
Dip Switches 7 and 8 are not active on this recorder
Slide toggle DOWN for OFF position