Eaton TC 48, Руководство пользователя, Страница: 25 / 56

Proper sensor type is also a very important factor to obtain precise
measurements. The sensor must have the correct temperature range
to meet the process requirements. In special processes the sensor
might need to have different requirements such as leak-proof, anti-
vibration, antiseptic, etc.
Standard sensor limits of error are 4 degrees F ( 2 degrees C )
or 0.75% of sensed temperature (half that for special ) plus drift
caused by improper protection or an over-temperature occurrence.
This error is far greater than controller error and cannot be corrected
on the sensor except by proper selection and replacement.
± ±
Proper sensor type is also a very important factor to obtain precise
measurements. The sensor must have the correct temperature range
to meet the process requirements. In special processes the sensor
might need to have different requirements such as leak-proof, anti-
vibration, antiseptic, etc.
Standard sensor limits of error are 4 degrees F ( 2 degrees C )
or 0.75% of sensed temperature (half that for special ) plus drift
caused by improper protection or an over-temperature occurrence.
This error is far greater than controller error and cannot be corrected
on the sensor except by proper selection and replacement.
± ±
2-6 Sensor Input Wiring 2-6 Sensor Input Wiring
18 4
19 5
20 6
TC 96 TC 96
TC 48 TC 48
PTA PTA
TC+, V+
PTB, mA+ TC+, V+
PTB, mA+
TC-, V-
PTB, mA-
TC-, V-
PTB, mA-
BB
BB
AA
RTD RTD
_
_
+
+
V V
_
+
TC TC VV mA mA RTD RTD
Figure 2.7 Sensor Input Wiring Figure 2.7 Sensor Input Wiring
2-7 Control Output Wiring 2-7 Control Output Wiring
3
4
TC 96 TC 96
TC 48 TC 48
9
10
LOAD LOAD
120V/240VAC 120V/240VAC
Figure 2.8 Output 1 Relay Figure 2.8 Output 1 Relay
25
LOAD LOAD
120V/240VAC 120V/240VAC
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