Sentry ST 662 Instruction Manual

Infrared Thermometer

MODEL: ST 662

Instruction

Manual

Broad Temp.

Infrared Thermometer

Instruction

Manual

662 Version-0 1 0 5 / A P R .

Broad Temp.

1.Product Introduction

1-2 Applications

2.Safety Information

2-2 Safety symbols

3.Specifications

4.Operation Instructions

Unit Diagram

5.Techniques of Infrared Thermometer

6.Maintenance

1-1 Features

2-1 Cautions

4-1 Quick Start

4-2
4-3 °C/ °F and Battery Change

5-1 Field of view(FOV) ratio

5-2 Emissivity

Table Content

1

2

3

4

1
1

2

2

4
4
5

6

7

7

6

Broad Temp. Infrared Thermometer 1

Ultra low power consumption in shutdown mode.
Extended long time measuring reliability.
Backlit LCD display.
°C or °F selectable.
Electronic trigger lock.

1-1 Features

Electrical troubleshooting.
Automotive repair and maintenance.
Air conditioner.
Science experiment.
Manufacturing processes of semiconductor

technology.
Test terminals on circuits.
Food safety and processing.
Perform HVAC energy audits.

1-2 Applications

Thank you for purchasing this infrared thermometer.
The Infrared Thermometer is a non-contact infrared
temperature measuring instrument. To measure a
temperature, point the unit at the object unitl the
temperature is read, pull the measuring trigger and
hold. Make sure the target area is larger than the unit's
spot size. For large target objects assure you are within
target distance.

1.Product Introduction

Read the following safety information carefully
before attempting to operate or service the meter.
Only qualified personnel should perform repairs or
servicing not covered in this manual.

2.Safety Information

DO NOT submerge the unit in water.
This product is not designed for use in medical

evaluations. The product can only be used to
measure body temperature simply for reference.
They are meant for industrial and scientific
purposes.

2-1 Cautions!

2-2 Safety symbols

Dangerous, refer to this manual before using
the meter.

CE Certification.

This instrument conforms to the following standards:

EN50081-1:1992 Electromagnetic Emissions.
EN50082-1:Electromagnetic Susceptibility.

Test were conducted using a frequency range of 80­1000MHz with the instrument in three orientations. The

o o

average error for the three orientations is ±C )4.0 F( at
3V/m throughout the spectrum. However, between 300MHz
and 800Mhz at 3V/m, the instrument may not meet its stated
accuracy.

Do not point laser directly at eye . Use
catution a round reflective surfaces. Keep out of
reach of children.

Laser Warning Note!

3.Specifications

Distance/Spot Ratio

Temperature Range

Accuracy

Thermopile

Repeatability
Resolution

Response Time

Emissivity

℃/℉ Switchable
Backlight

Auto Power Off

Battery Type

Dimensions

Weight

Accessory

12:1

-50~999℃(-58~1830℉)

±3 C(±5 F)
From -50~-20 C(-58~-4 F)

° °

° °

8~14 mμ
±1 C (±2 F) ° °

1 C (1 F)° °

500 ms.

Fixed at 0.95

Automatically after approx. 6 sec.

9V(006P, IEC6F22, NEDA1604)

187g Approx.

170x133x45mm
(6.69"x5.23"x1.77")

Operation Temp.

0~50 C(32~122 F),10~90%RH° °

YES

(Assumes Operation
Ambient Temperature
of 25 C/77 F) ° °

±2 C(±3 F)
From -20~100 C(-4~212 F)

° °

° °

±2% From
100~999 C(212~1830 F)° °

YES

9V Battery, Instruction manual,
Carrying case.

Battery Life

16 hrs.

Max/Min/Avg/△T

YES

Broad Temp. Infrared Thermometer 3

Supply Voltage

9V

Auto-measuring

10 Point Memory

Laser Sight Switchable

YES
YES
YES

YES

Audio Alarm

4.Operation of Instrument

To measure a temperature, point the unit at the
target you want to measure, pull the trigger and
hold. In SCAN mode, the LCD displays the current
temperature in Celsius or Fahrenheit. The unit will
HOLD the last reading for about 6 seconds after
the trigger is released; the word HOLD appears. Be
sure to consider the target area inside the angle of
vision of this instrument. The laser is used for
aiming only. For small targets at short distances
the aim should be adjusted respectively.

4-1 Quick Start

4-2 Unit Diagram

Display Screen

Laser Sighting

Measuring Window

Measuring Trigger

Battery and cover

4-3 C/ F and Battery Change° °

The unit is powered by
9V battery and displays
temperatures in either C
or F. The user has to
replace the battery when
the battery voltage drops
below the voltage for
reliable operation and at
the same time the low
battery symbol will
appear.

To change the 9V battery,
pull op en t h e uni t ' s
handle under the trigger.
A f t e r r e p l a c i n g t h e
battery push back and
snap in place.

°

°

LCD Display

Scan/Hold

mode indication

°C/°F unit indication

Temperature indication

c

F

ON

OF

L
A

S
E

R

9V Battery

Laser on/off

°C/° F
Switchable

Low battery

Laser on/off

indication

Broad Temp. Infrared Thermometer 5

mm

34@25 0

48@50 0

78@10 00

D:S=12:1

inch

1.4@1 0

1.9@2 0

3.1@4 0

D

S

5.Techniques Of Infrared
Thermometer

The field of view is the angle of vision at which the
instrument operates, and is determined by the
optics of the unit. The FOV is the ratio of the
distance from the target to the target diameter. The
smaller the target, the closer you should be to it.
When the target diameter is small, it is important to
bring the thermometer closer to the target to insure
that only the target is measured.

5-1 Field of view(FOV) ratio
=Distance to diameter (DS) ratio

Emissivity is the ability of an object to emit or
absorb energy. Perfect emitters have an emissivity
of 1, emitting 100% of incident energy. An object
with an emissivity of 0.8 will absorb 80% and reflect
20% of the incident energy. Emissivity is defined as
ratio of the energy radiated by an object at given
temperature to the energy emitted by a perfect
radiator at the same temperature. All values of
emissivity fall between 0.1 and 1.0.

5-2 Emissivity

Non-contact temperature sensors measure IR energy
emitted by the target, have fast response, and are
commonly used to measure moving and intermittent
targets, targets in a vacuum, and targets that inaccessible
due to hostile environments, geometry limitations, or
safety hazard. The cost is relatively high, although in
some cases is comparable to contact devices.

6.Maintenance

Cleaning the lens: Blow off loose particles using
clean compressed air. Gently brush remaining
debris away with a camels hair brush. Carefully
wipe the surface with a moist cotton swab. The
swab may be moistened with water.

NOTE:
DO NOT use solvents to clean the lens.

Cleaning the housing:

Use soap and water on a damp sponge or soft cloth.

Broad Temp. Infrared Thermometer 7

ST 6 6 2 Ve r s i o n - 0 1 0 7 / M A R

3F, No.122, Sec.1, Sanmin Road,
Ban-Ciao, Taipei 220, Taiwan, R.O.C.
TEL:[phone]
FAX:[phone]
http://www.sentrytek.com.tw

PA05-0000662-01