Keller ITS CellaPort PT 120, Operating Manual, Page: 51 / 72

Operating manual PT 11x, 12x,13x
45
27 Technical Data PT 120
Measuring ranges:
250 ... 2000 °C
Sensors:
photo diode
Spectral sensitivity:
1.1 - 1.7 µm
Response time t
98
:
≤ 50 ms (T > 250 °C)
≤ 2 ms (T > 750 °C)
Measuring uncertainty:
0,3 % of temp. Reading, at
least 4 K
(at
e
=1.0 and TA = 23 °C)
Repeatability:
1 K
Temperature coefficient with
reference to 23 °C:
0.25 K / K (for T < 500 °C)
0.05 % / K (for T
≥ 200 °C)
of measured value
27.1 Field of View Diagrams for PA 120
PT 120 Lens Focussing range Distance to target
size ratio
AF 1 PZ 20.01
0.4 m -

175:1
AF 2 PZ 20.03 0.2 m
– 0,4 m
150:1
AF 3 PZ 20.06
1.2 m -

275:1
AF 4 PZ 20.05
0.2 m -

40:1
1 2
3
4
5
6
7
8
9
10
6
11
17
23
29 34 40 46
51
57 D = 175 :1
Target distance [m]
Target diameter [mm]
0
PZ 20.01 (0.4 m -
∞)