Oakton Temp-14 User manual

Instruction Manual
Temp-14
Single Input Thermistor
Thermometer
68X481902 Rev 0 10/0
8
Part of Thermo Fisher Scientific

T A BLE OF CONTENTS
1. Quick Start Guide..................................... 1
2. Introduction .............................................. 2
3. Safety Precautions ................................... 3
4. Specifications........................................... 4
5. Battery Installation And Replacement ..... 5
6. Inserting And Removing Optional Rubber
Armour ..................................................... 6
7. Assembling Optional Handsfree
Accesories
................................................ 7
8. Connecting A Thermistor......................... 8
9. Key Functions .......................................... 9
10. Display Overview ................................... 10
11. Measurement Mode ............................... 11
12. Selecting Temperature Scale................. 12
13. Min And Max Function........................... 12
14. Auto Off Function................................... 13
15. Calibration.............................................. 13
16. Clear Field Calibration ........................... 14
17. Field Calibration Unlock......................... 15
18.
Field Calibration Lockout ........................ 16
19. Maintenance ........................................... 17
20. Cleaning ................................................. 17
21. Batteries ................................................. 17
22. Trouble Shooting ................................... 18
23. Accessories ............................................ 19
24. Warranty ................................................. 20
25. Product Return ....................................... 20
26. Innocal® Calibration And Repair Services
(North America)...................................... 21

- 1 -
1. QUICK START GUIDE
To ensure best results please read the
complete manual.
1. Connect probe.
2. Press the on/off key.
Press again to turn on backlight.
3. Select °C or °F display using °C/°F key.
4. Insert probe in sample.
Allow adequate time for reading to
stabilize.
Response time will vary depending on
probe.
5. Take reading.
Press hold key to freeze display.
Press min/max to display minimum or
maximum temperature.
6. Press and hold the on/off key for three
seconds to turn meter off.

2. INTRODUCTION
Thank you for choosing the
Temp-14 Thermistor
Thermometer. This sturdy
handheld thermometer
provides highly accurate
temperature measurements
using thermistor probes. The
Instrument is easy to use and
includes the following
features:
•O
perator selection of Celsius or F ahren heit
scale
•
Resolu tion of 0.1° C/F
•Large backlit LCD with two lines of four-digit
display
•
Hold featur e for temporarily retaining a
reading
•
Min and max readings display
•Field
calibra ti on capab ilit y
•
Auto power off with Enable/Disable function
•
Low ba tter y warning
•Standard ¼ inch (6.3mm) phone jack
connector input
•Operates with a wide selection of probes
- 2 -

- 3 -
3. SAFETY PRECAUTIONS
Voltages present at the thermistors may
also be present at the battery terminals.
Always disconnect the thermistor when
changing batteries.
W
WARNIN
G
This instrument is designed to accept low
level signals supplied by standard 400
series thermistors. Under no
circumstances should the input voltage
exceed the specified 10 v rms.
1. Do not use or store this instrument in
microwave ovens or any abnormally hot or
cold areas.
2. Weak batteries should not be left in the
instrument. Dead batteries can leak and
cause damage to unit.

- 4 -
4. SPECIFICATIONS
Range –40 to 150 °C (–40.0 to 302.0 °F)
Resolution 0.1 °C (0.1 °F)
Accuracy
±0.2 °C (±0.4 °F) in range -40 °C
to 125 °C (-40 °F to 257)
±0.5 °C (±0.9 °F) in range 125°C
to 150 °C (257to 302 °F)
Lcd Display
4+4 digit, 58 X 40mm dual-line
display with backlight
Out Of Range
Display “Ur” Or, “OPEN”
Display Update
Rate 0.5 sec per update
Input
One probe with ¼ inch (6.3mm)
phone jack connector
Input Protection 10 v rms
Battery Three AA, 1.5V alkaline
Battery Life 700 hours continuous, typical
Auto Shutoff 17 minutes after last key press
Stability Criteria “STABLE” will display upon 5
seconds of stability
Stated Accuracy 18°C to 28°C (64°F to 82°F)
Useful Range 0°C to 40°C (32°F to 104°F)
Storage –40°C to 65°C (–40°F to 149°F)
Humidity 10% to 90% (non-condensing)
Dimensions
(L x W x H)
Without Armor:
175mm X 97mm X 42mm
With Armor:
180mm X 102mm X 52mm
Weight With
Batteries
Without Armor:267g
With Armor:362g
Ingress Protection Meets IEC-529 IP-54 for dust and
water-resistant enclosures
Compliance
(For CE Mark)
EN61326-1/A1: 1998
(EU EMC Directive)

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5. BATTERY INSTALLATION AND
REPLACEMENT
Voltages present at the thermistors may
also be present at the battery terminals.
Always disconnect the thermistor when
changing batteries.
Weak batteries should not be left in the
instrument. Dead batteries can leak and
cause damage to unit.
The typical battery life is about 700 hours.
Selecte
d se ttin gs are stor ed in memory and
will remain in memory even after power is
turned off, or while batteries are being
replac ed.
1. Before
changing batter y , tur n instrume nt
off
and disconnect probe .
2.
Loosen screw and lift batter y cover off the
back of case.
3.
Remove the t hree AA batteries.
4. Insert three
new batteri es observing
pol
arit y .
5. Install
cover and tig h ten screw .

- 6 -
6. INSERTING AND REMOVING
OPTIONAL RUBBER ARMOUR
1. To insert thermometer into the optional
rubber armor, slide in from the top of meter
before pushing the bottom edges of meter
down to set it into position. Lift up the stand
at the back of meter for bench top
applications if necessary.
2. To remove thermometer from armor, push
out from the bottom edges of meter until it
is completely out of boot.

- 7 -
7. ASSEMBLING OPTIONAL HANDSFREE
ACCESORIES
You can use the optional magnets and strap in
the Hands Free Kit accessories for hands-free
operations.
Figure 1: Hands Free Kit

- 8 -
8. CONNECTING A THERMISTOR
Use the correct thermistor (series 400) for your
instrument. Using an incorrect probe will result
in erroneous readings. (Series 500 thermistor
probes may be used along with the supplied
correction chart to convert meter readings to
actual readings to actual temperature).
Insert the ¼ inch plug into the mating connector
on top of the instrument:
Thermistor Input
Figure 2: Thermistor Input

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9. KEY FUNCTIONS
Figure 3: Keypad
°C/°F
Toggle between Celsius or Fahrenheit.
cal
Activates Calibration mode for 0°C offset
calibration (after field calibration
enabled). Press and hold this key for 3
seconds to enter Calibration mode if field
calibration is unprotected.
hold
Activates/ Deactivates freezing of the
measured reading while in measurement
mode.
min
max
Activates/ Deactivates display of the
minimum and maximum readings (MIN
and MAX readings are calculated from
the min/max keypress).
Press and hold this key for 3 seconds to
clear the MIN/MAX reading stored.
on/off
light
Powers on and shuts off the
thermometer by holding it for 3 seconds.
Press this key to activate/ deactivate the
backlight display. (Backlight will
automatically turns off within 30 seconds
of activation).

- 10 -
10. Display Overview
Figure 4: Meter Display
°C/°F Celsius or Fahrenheit indicator.
MIN Minimum reading annunciator.
MAX Maximum reading annunciator.
3 Bar : 700 – 550 hours
2 Bar : 350 – 550 hours
1 Bar : 150 – 350 hours
Blinking: < 150 hours
CAL
Blinks during calibration mode.
Remains in display indicating field
calibration is active.
HOLD Remain in display during hold mode.
STABLE Displayed upon recognizing final
value
Err CAL
Error indicator on main digit display
Indicates calibration error due to out
of tolerance value.

- 11 -
11. MEASUREMENT MODE
Press the on/off key. The thermometer
performs a self-test and all display digits and
indicators should remain on for approximately
two seconds before the meter enters
measurement mode.
If a probe is not connected or if the probe is
defective, the display will indicate “OPEN”.
°c
Figure 5: Display when no probe is detected
For optimum instrument accuracy, allow one
minute for ambient temperature stabilization. If
the unit has been stored at an extreme ambient
condition, more time will be needed.
A STABLE indicator appears at the top right
corner of the display when reading is
continuously stable for 5 seconds.
To freeze reading, press hold. Press hold key
again to release the reading and resume
normal operation.
24.6
°c
HOLD STABLE
Figure 6: HOLD and STABLE function
The display will show “Ur” (under range) or “Or”
(over range) if the temperature reading is out of
range of the instrument.

- 12 -
12. SELECTING TEMPERATURE SCALE
24.6
°c
75.4
°F
°C/°F
Figure 7: Press °C/°F key to toggle
between °C and °F
Select °C or °F by pressing the °C/°F key. Each
time the key is pressed, the temperature scale
will switch. Switching between °C and °F can
be done at any time during operation.
Each time you turn the instrument on, it will
power up with the same settings that were set
when the unit was last turned off.
13. MIN AND MAX FUNCTION
Press the min/max key to toggle between the
minimum and maximum readings. The
minimum and maximum reading function is
ideal for monitoring unattended operations
while continually displaying every temperature
change that occurs. The minimum and
maximum values are sensed and automatically
stored. To exit and clear the MIN/MAX reading
stored, press and hold the min/max key for 3
seconds.

- 13 -
14. AUTO OFF FUNCTION
The thermometer has a default auto off function
of 17.5 minutes.
To deactivate this function, press both the
min/max key and the on/off key at the same
time when turning on the thermometer. “A.OFF
no” flashes to show indicate that the auto off
function has been disabled for that session.
A.off
Figure 8: Disabling the auto off function
15. CALIBRATION
The CAL function allows single point calibration
of the thermometer at 0°C (32°F) to
compensate for probe offset error. Use the field
calibration feature to improve
thermometer/probe accuracy.
The Temp-14 Thermistor comes with a
calibration lock function to prevent accidental
changes to calibration settings. A field
calibration can only be performed when the
function has been unlocked. To unlock field
calibration, follow steps 1 through 4 in FIELD
CALIBRATION UNLOCK section.
To calibrate:
1. Pack sensing end of probe in a container
tightly packed with crushed ice and filled

- 14 -
with distilled water. Allow temperature to
stabilize.
2. Press and release the cal key for 3
seconds to enter the calibration mode. The
CAL indicator starts blinking. Release the
cal key.
3. If the measured temperature is from –5°C
to 5°C (23 to 41°F) when the temperature
reading is stable, press the cal key.
The CAL indicator will stop blinking, and the
reading will be set to 0°C (32°F). The CAL
indicator will remain in display, indicating that
field calibration is now active.
If “Err” is displayed, the displayed reading is
outside the above limits.
16. CLEAR FIELD CALIBRATION
NOTE: Press any key (except the cal key)
while in calibration mode to abort calibration.
To clear user calibration:
1. Turn the thermometer off.
2. Hold the cal key down while pressing the
on/off key.
3. The version-model window appears without
the CAL indicator to indicate that the user
calibration has been successfully cleared.

- 15 -
17. FIELD CALIBRATION UNLOCK
The calibration unlock feature enables field
calibration operation. To unlock field calibration:
1. Turn the thermometer off.
2. Hold the cal key and hold key down
simultaneously, then press the on/off key.
3. The “CAL” indicator appears momentarily
with the version-model window to indicate
that the user-calibration function has been
unlocked successfully (Figure 9).
CAL
Figure 9: Successful field calibration unlock
4. When the keys are released, the unit will go
to measurement mode (Figure 10).
°c
STABLE
Figure 10: Unit goes to measurement mode

- 16 -
18. FIELD CALIBRATION LOCKOUT
The calibration lockout feature prevents any
field calibration changes. The lockout remains
in effect until an unlock has been performed. To
lock the field calibration operation:
1. Turn the thermometer off.
2. Hold the cal key and °C/°F key
simultaneously, then press the on/off key.
3. If field calibration lockout is successful, the
version-model window appears without the
CAL indicator (Figure 11).
Figure 11: Successful field calibration lockout
4. When the cal key is released, the unit will
go to measurement mode (Figure 12).
°c
STABLE
Figure 12: Unit goes to measurement mode

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19. MAINTENANCE
Properly used, the thermometer should
maintain calibration indefinitely and not require
service other than occasional cleaning of the
housing and changing of the batteries. Do not
clean with abrasives or solvents. Use mild
detergents; never immerse nor use excessive
fluid.
20. CLEANING
WARNING:
TO PREVENT IGNITION OF A HAZARDOUS
AT
M OSPHERE BY E L E C TROSTATI C
DISCHARGE, CLEAN WITH DAMP CLOTH.
Do not clean wi th abrasives or solven ts. Use
mild deter ge nts, never immerse nor use
excessive fluid.
21. BATTERIES
If there
is no display when the thermometer is
turned on, check cond ition of th e three AA
ba tteries. Also check that th e batter y ter minals
are clean and batteries are properly install ed. If
replacement is necessary , refer to the
BATTERY INSTALLATION AND
REPLA
C EMENT se ction for replacemen t
proced ure.