A. Introduction

This infrared thermometer is used for measuring the temperature of the object's surface, which is applicable for various hot, hazardous or hard-to- reach objects without contact safely and quickly.

This unit consist of Optics, Temperature Sensor Signal amplifier, Processing circuit and LCD Displ- ay. The Optics collected the infrared energy emitt- ed by object and focus onto the Sensor. Then the sensor translates the energy into an electricity sig- nal. This signal will be turned out to be digital sh- own on the LCD after the signal amplifier and pro- cessing circuit.
 

B. Warning & Cautions

1. Warning:

To avoid the potential situation may cause harm or damage to people, please pay attention to the following items:
1) Before you use this unit, check on the plastic

housing carefully. If there is any damage, do not

use it.
2) Do not point laser directly at eye or indirectly

off reflective surfaces.
3) Do not use this unit in the environment of

explosive gas, steam or dusty. 2. Caution:

To avoid the damage of the unit or the target, please protect from the following situations:

1). EMF (electro-magnetic fields) from arc welders, induction heaters.
 

2). Thermal shock (caused by large or abrupt ambi- ent temperature changes-allow 30 minutes for unit to stabilize before use.

3). Do not leave the unit on or near objects of high temperature

C. Distance to Spot size
 

1. When take measurement, pay attention to the Di- stance to Spot Size. As the Distance (D) from the target surface increases, the spot size (S) of the area measured by the unit becomes larger.The Distance to Spot size of the unit is 12:1 ***This unit is equipped with a laser, which is used for aiming.

2. Field of view:
Make sure the target is larger than the unit's spot size. The smaller the target the closer measure dis- tance. When accuracy is critical, make sure the tar- get is at least twice as large as the spot size.

D. Emissivity

Most organic materials and painted or oxidiz- ed surfaces have an emissivity of 0.95 (pre-set in the unit). Inaccurate readings will result from mea- suring shiny or polished metal surfaces. To comp- ensate, cover the target surface with masking tape or flat black paint. Measure the tape or painted su- rface when the tape or painted reach the same te- mperature as the material underneath.
 

E. Operation

1. Operating the unit:
1). Open the battery door and insert a 9V (6F22) battery properly.; 2). Pull the trigger to turn on the unit; 3). Aim at the target surface and pull the trigger, then tempera- ture will be shown on the LCD. Thisunitisequippedwitha laser, which is only used for aiming.
 

2. Locating a Hot Spot:
To find a hot spot, aim the thermometer outside of interest, then scan across with an up and down motion until you locate the hot spot. (Figure 3)

F. LCD display & Buttons

1. LCD display: Figure 4

a. Data hold icon
b. Scanning icon
c. Laser on icon
d. Backnight on icon
e. Low Battery icon
f. Temperature unit
g. Temperature reading

2. Buttons: Figure 5

(1) Trigger: When pull the trigger, LCD display rea- ding with SCAN icon. Release the trigger, displ- ay reading with HOLD icon for 7 sec(approx). Built-in 20 sec auto power off function.

(2) Laser on/off button
(3) Celsius / Fahrenheit switch button
(4) Back light on/off button
 

G. Maintenence

Lens Cleaning:
Blow off loose particles using clean compressed air. Gently brush remaining debris away with a moist cotton swab. The swab may be moistened with water.Case cleaning: Clean the case with a damp sponge/cloth and mild soap.
 

Note:
1) Do not use solvent to clean plastic lens. 2) Do not submerge the unit in water.
 

H. Specification

Temperature range Accuracy
-50 ~ 420°C (-58 ~ 788°F)

Accuracy
0°C~420°C (32°F~788°F) :±1.5°C(±2.7°F) or±1.5%
-50°C~0°C(-58°F~32°F):±3°C (±5°F) Whichever is greater

Resolution
0.1°C or 0.1°F

Repeatability
1% of reading or 1°C

Response time
500 mSec 95% response

Spectral response
5-14 um

Emissivity
0.95 Preset

Distance to Spot size
12:1

Operating Temperature
0 ~40°C (32 ~ 104°F)

Operating Humidity
10~95%RH non-condensing , up to 30°C(86°F )

Storage Temperature
-20 ~ 60°C (-4~140°F)

Power
9V (6F22) battery

Typical battery life
Non-laser mode: 22 hrs; Laser Models:12 hrs

Weight
147.5g

Dimension
153x101x43mm

Tags: Sbe300