8
Infrared K-Thermometer Model CA876
Field of View (FOV) ratio:
10:1 (Distance : Diameter)
The FOV is the ratio of the dis-
tance to the target to the target
diameter. When the target
diameter is small, it is impor-
tant to bring the thermometer
closer to the target to ensure
that only the target is mea-
sured, excluding the surroundings. Remember that the measurement size
is one-tenth the distance to the target. For example, if the thermometer is
at 10", then the size measured is 1".
3.1.2 K TYPE
Temperature Scale:
Celsius (°C) or Fahrenheit (°F) - User-selectable
Measurement Range:
-40° to 2000°F or -40° to 1350°C
Resolution:
0.1°F/°C or 1°F/°C
Accuracy:
-328°F to 1999°F: ± 0.1% of Reading ± 2°F plus T.C.
-199°C to 1370°C: ± 0.1% of Reading ± 1°C plus T.C.
(Accuracy is specified for operating temperatures over the range of 64° to
82°F (18° to 28°C), for 1 year, excluding the sensor)
Temperature Coefficient:
0.1 times the applicable accuracy specification per °C from 0° to 18°C and
28° to 50°C
Input Protection:
24V
DC
or 24Vrms maximum input voltage on any combination of inputs
Sample Rate:
2.5 times per second
Input Connector:
Standard miniature thermocouple connectors (flat blades spaced 7.9mm,
center-to-center)
Temperature Response:
Temperature indication follows Reference Temperature/Voltage Tables
N.I.S.T. Monograph 175 Revised to ITS-90 for K-type thermocouples
1" Ø
(25mm)
2" Ø
(50mm)
3" Ø
(75mm)
4" Ø
(100mm)
20"
(500mm)
10"
(250mm)
0.63"
(16mm)
30"
(750mm)
40"
(1000mm)
Distance to
object
