Hardware manual PCD7.LRxx-PG5 room controller │ Document 27-653; version ENG07 │ 2019-03-21
Saia-Burgess Controls AG
Sensor properties
Appendix
A-7
A
A.4
Sensor properties
A.4.1
Sensor input accuracy
The internal sensor inputs of the controller support NTC10kΩ and NTC20kΩ sen
-
sors. The following table shows the typical minimum accuracies for the hardware
and software for these temperature sensors.
Sensor
temperature range
Typical hardware measurement errors
(without sensor tolerance)
°Celsius
(°Fahrenheit)
NTC10k
*1
NTC20k
*1
-50 … -20°C
(-58 … -4°F)
≤5.5°C
≤5.0°C
-20 … 0°C
(-4 … 32°F)
≤1.2°C
≤1.0°C
0 … -30°C
(32 … 86°F)
≤0.4°C
≤0.3°C
30 … 70°C
(86 … 158°F)
≤0.6°C
≤0.5°C
70 … 100°C
(158 … 212°F)
≤1.2°C
≤1.0°C
100 … 130°C
(212 … 266°F)
---
≤3.0°C
130 … 150°C
(266 … 302°F)
---
≤5.5°C
Display in °C
-20…100
-7…150
[1] These temperature curves are not standardised. They differ depending on the NTC manufacturer.
The temperatures can be displayed using a characteristic curve file (“Name.saiadbe”, available from
Saia PCD Support) and the “Conversion DB n Points” FBox.
This is only the accuracy of the internal sensor input (ha software [linearisation]). This table
does not contain the properties of the sensors themselves (see the following section “Sensor proper-
ty tables”). If another sensor or accuracy is required, the inputs for a connected panel I/O module,
for example, can be used instead.
A.4.2
Sensor property tables
The properties (resistance as a function of temperature) of the sensors and the
resulting voltage can be seen on the following pages. The specified values do not
include any failures caused by: sensor faults, wiring resistance or wiring errors,
faulty readings due to a measuring instrument connected to the measured resist-
ance, or voltage applied at an input.
The two tables for
NTC 10 kΩ
and
NTC 20 kΩ
for “resistance as a function of tem-
perature” are shown on the next two pages.
