Horng-Chi TM-168 User manual

Infrared Thermometer
Remote Temperature Measurement
(Non-Contact)
TM-168
INSTRUCTION MANUAL
INTRODUCTION
The hand-held Infrared Thermometer is easy to
operate. Fur t hermore, the backlight illumination function is help f ul to
user who is accustomed to measure in dark places. The Infrared
Thermometer will also indicate a Laser symbol on LCD as
a reminder and its additional auto hold reading & auto
power off functions are
practical to users.
The Infrared Thermometer is a non-contact thermome t er with laser
poin
t er . It can be used to measure t he t emperature of objects’
surface t hat is improper t o be measured by traditional (con t act)
thermome t er (such as moving objec t, surface with electricity curren t
or objec t s that are dif f icul t t o reach) .
Ⅰ. SAFETY INFORMATION
1. Read the following safety information carefully
before attempting to operate or service the meter.
2. Use the meter only as specified in this manual; otherwise, the
protection provided by the meter may be impaired.
Warning
If user pulls the trigger while the symbol is showing
on LCD, then the meter will radiate the laser. At this
moment, user has to avoid the laser radiating to your eyes
to prevent any hurts.
˙If the measured object with smooth surface and will reflect
the laser, pls. prevent the reflected laser to radiate
your eyes.
˙Pls. don’t radiate the laser to inflammable gas to
avoid dangers.
1

3. Precautions:
a). Do not operate the thermometer near large electrical or
magnetic fields.
b). Keep the thermometer away from direct sunlight or strong
source of light, hot objects (70℃/158℉), high temperature,
high humidity, or dust during use and storage.
c). If the thermometer is in an environment
where the temperature changes drastically,
please wait until the thermometer returns to a
stable status before starting the measuring.
d). Condensation may form on the focal lens if the thermometer
is moved quickly from a cold to a hot environment.
Before taking measurements, please wait for the
condensation to dissipate.
e). Do not touch the focal lens.
4. Environmental conditions:
a). Altitude up to 2000 meters.
b). Relative humidity 80% max.
c). Operating Ambient 0 ~ 50℃
5. Maintenance & Clearing:
a). Repairs or servicing that are not covered in this manual and
should be performed by qualified personnel only.
Ⅱ. FEATURES
 ℃/ ℉Selectable.
 Backlight LCD display.
 Laser targeting.
 Auto Hold function.
 Maximum/Minimum reading recorder function.
 Data memory and read function.
 Auto-Power off.
Ⅲ. SPECIFICATIONS
3-1 General Information :
Display : Backlight LCD Display.
Auto power off : Approx. 15 sec.
Data memory capacity : 50 set. (Direct reading from LCD
display)
Over range indication : “OL” or “-OL”.
+
b). Periodically wipe the case with a dry cloth. Do not use Low battery indication : The symbol is displayed on LCD
abrasives or solvents on the instrument.
c). When servicing, use only specified replacement parts.
6. Safety symbols:
Comply with EMC
2
when the batteryvoltage drops below
the operating voltage.
Power supply : Single 9V battery 006P 9V or
IEC6F22, or NEDA1604.
Battery life : Approx. 100 hours (laser pointer
and backlight aren’t on use)
(Alkaline batteries)
Operating temperature 0℃to 50℃(32℉to 122℉),
and humidity : below 80%RH.
3

Key Press one time
Press and hold
3 seconds
2.
MAX/MIN
℃ / ℉
Enter to MAX/MIN recorder mode .
MAX  MIN  Current reading (MAX/MIN)


In MAX/MIN mode
will exit this mode.
 In normal mode will
change
℃ or ℉ unit.
3.
M
▼
 In normal mode will turn on or of f
the backlight.
 In Read mode can decrease
gradually
to select the desired
memory reading.
Memory the LCD
reading.
4.
R
▲

In normal mode will turn on or of f
the laser mark .
 In Read mode can increase
gradually
to select the desired
memory reading.
Read the memory
data.
Storage temperature –10℃to 60℃(14℉to 140℉),
and humidity: below 70%RH.
Dimensions : 172(L)×118(W)×46(H) mm
6.8(L)×4.6(W)×1.8(H) inches.
Weight : Approx. 220g with battery.
Accessories :
instruction manual, battery.
3-2 Electrical Specifications :
Measuring range : -35℃to 500℃(-31℉to 932℉)
Resolution : 0.1℃, 0.2℉
Accuracy : ± 2% reading or ± 2℃or ±4℉,
whichever is greater.
Temperature
coefficient : 0.1 times the applicable accuracy
specification per ℃from 0℃to 18℃
and 28℃to 50℃(32℉to 64℉and
82℉to 122℉).
Responding time : 2.0 times per second.
Spectral Response : 6 ~ 14um.
Field of view : 12:1 ; optics ratio with a 1” min target.
Sighting :
Laser marker 1mw (class 2).
Sensor : Thermopile.
Ⅳ. FRONT PANEL DESCRIPTION
° C
°F
1. Display .
5. Measuring trigger : Trigger f or powering on.
Pull the trigger t o turn on the thermometer .
6. Battery cover .
7. Laser aperture.
4
8. Focal lens. 5

Ⅴ. LCD DISPLAY DESCRIPTION
°C
° F
1. Hold function
8. Measure indicator
2. Maximum reading
9. Laser indicator
3. Minimum reading
10. Memory and Read address number
4. Low battery mark
11. Read memory data
5. Emissivity value
12. Memory full indicator
6. Emissivity
13. Store data to memory
7. Infrared measuring value
14. Unit “
℃
,
℉
”
Ⅵ. TEMPERATURE MEASUREMENT
1. Measurement :
Pull the trigger t o power on the meter and star t measuring . Release the
trigger
to stop measuring and auto hold the reading . The meter will turn
of
f automatically after 15 seconds.
2. MAX/M I N hold function:
Pull & hold the trigger then press " MAX / MIN, ℃ / ℉ " for “1 time” to cycle
select maximum (MAX), minimum (MIN) and current reading (MAX/MIN).
Press
" MAX / M I N , ℃ / ℉ " f or “3 seconds” to exit this mode.
Note:
 Laser offset: The laser beam is offset 18mm(0.71in) from the focal lens.
Choose a sampling spot that is large enough to include the laser offset.
 Sur f ace Temperatures: The thermometer will measure the firs t
surface it detects , even a glass cover , dust or fog. Make sure the
object
is not obstructed.
3. Selecting ℃ / ℉ unit :
While powering on the meter , the temperature unit that appears in
LCD
would be t he last unit you measured. If user wants to change
the
temperature unit, pull trigger to turn on the
meter , then
“ MAX / M I N , ℃ / ℉ ” key for “3 seconds”.
4. Memorize / Read l ogging funct i on (50 readings)
 To memorize the reading :
Press " M " key for 3 seconds, stores one se t logged reading in
memory
, LCD will show " M " and memory location numbers (1 t o 50). 
To recall and read the reading :
a) . Press " R " key for “3 seconds” to recall the reading memory
data mode. LCD will show " R " and memory location numbers.
b).
Press " " or " " key to scroll through the logged readings.
c) . Press " MAX / M I N , ℃ / ℉ " key to exit READ mode.
 To clean the memory :
Under power off status, press and hold M button then pull trigger
until
“ CLR ” shows on LCD.
Ⅶ.BATTERY REPLACEMENT
1. As battery power is not suf f icient, LCD
will display the symbol + .
Replace old battery with a new one.
2 . Open battery cover t hen t ake out the
battery
from instrument and replace with
a
new 9-Volt battery . Put back the
battery cover .
OPEN
6 7 June-2006