12
k
Open battery cover, then take out the battery from instrument
and replace with a new 9-Volt battery and place the battery
cover back.
9. NOTES:
•
How it Works
Infrared thermometers measure the surface temperature of an
object. The unit’s optics sense emitted, reflected, and transmitted
energy, which is collected and focused onto a detector. The unit’s
electronics translate the information into a temperature reading,
which is display n the unit. In units with a laser, the laser is used for
aiming purposes only.
•
Field of View
Make sure that the target is larger than the unit’s spot size. The
smaller the target, the closer you should be to it. When accuracy is
critical, make sure the target is at least twice as large as the spot
size.
Fig: 1
D
S
16mm
Laser Beam
inch
1.2 @ 60
0.72 @ 36
0.24 @ 12
6.0 @ 300
18 @ 900
30 @ 1500
mm
Sensor Beam
Distance (D) to Spot Size (S)
D:S = 50:1
3. SPECIFICATIONS
Model
Temperature range
D: S
ST-8859
-50 to 1600°C(-58 to 2912°F)
50:1
Display resolution 0.1°C(0.1°F)
Accuracy for targets:
Assumes ambient operating temperature of
18 to 28 °C (64 to 82
),
less than 80 % RH.
-50 to -20
(-58 to -4
)
: ±5 °C(±9°F)
-20 to 200
(-4 to 392
)
: ±1.5% of reading ±2
(±3.6
);
200 to 538
(392 to 1000
)
: ±2.0% of reading ±2
(±3.6
);
538 to 1300
(1000 to 2372
) : ±3.5% of reading ±5
(±9
)
1300 to 1600
(2372 to 2912
) :±3.8% of reading ±5
(±9
)
Response time
Less than 1 second
Spectral response
8~14um
°F
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
5
