Sensor Input Wiring; Control Output Wiring - Brainchild C21 User Manual

Proper sensor type is also a very important factor to obtain precise Proper sensor type is also a very important factor to obtain precise
measurements. The sensor must have the correct temperature range measurements. The sensor must have the correct temperature range
to meet the process requirements. In special processes the sensor to meet the process requirements. In special processes the sensor
might need to have different requirements such as leak-proof, anti- might need to have different requirements such as leak-proof, anti-
vibration, antiseptic, etc. vibration, antiseptic, etc.
Standard sensor limits of error are Standard sensor limits of error are
or 0.75% of sensed temperature (half that for special ) plus drift or 0.75% of sensed temperature (half that for special ) plus drift
caused by improper protection or an over-temperature occurrence. caused by improper protection or an over-temperature occurrence.
This error is far greater than controller error and cannot be corrected This error is far greater than controller error and cannot be corrected
on the sensor except by proper selection and replacement. on the sensor except by proper selection and replacement.

2-6 Sensor Input Wiring

2-6 Sensor Input Wiring
PTA
TC+, V+ TC+, V+
PTB, mA+ PTB, mA+
TC-, V- TC-, V-
PTB, mA- PTB, mA-
Figure 2.8 Sensor Input Wiring Figure 2.8 Sensor Input Wiring

2-7 Control Output Wiring

2-7 Control Output Wiring
Figure 2.9 Figure 2.9
Output 1 Relay or Triac (SSR) to Drive Load Output 1 Relay or Triac (SSR) to Drive Load
C21 C91
8 3
9 4
V
_
_
10 5
TC V mA RTD
C21 C91
5 10
6 9
_
UM0C911B
A A
4 degrees F ( 4 degrees F (
A
RTD
B
_
B
LOAD
120V/240VAC 120V/240VAC
Mains Supply Mains Supply
A A
2 degrees C ) 2 degrees C )
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