AMC-400 Series Digital Transmitter with Smart Sensor 2
13
3.4 SMART SENSOR 2 MODULE WITH ELECTROCHEMICAL SENSOR
OVERVIEW
1
2 3
4
5
6
7
8
9
0
REV
1
2
3
4
5
6
7
8
9
0
V
E
R
SNS1
SNS4
S
N
S
2
SNS3
Smart Sensor 2 Board
16
SS2 male connector
Sensor Location
GND test point
VDD test point
VREF test point
CTR
SIG
Front
Back
19
22
20
21
18
17
VDD
GND
SIG
VREF
CTR
Figure 3-3 Smart Sensor 2 Module with Electrochemical Sensor View
16. SS2 Male Connector:
This 7 pin connector mates with the Digital Transmitter
female connector. This connector carries the power and
communication.
17. VDD Test Point:
This VDD Test Point is to be used by service technicians
only. It is the Smart Sensor 2 control logic supply voltage
and must be 5+/-5% Volts DC.
18. GND Test Point:
This GND Test Point is to be used by service technicians
only with appropriate instrumentation such as a voltmeter. It
is the signal reference point for the Smart Sensor 2 control
logic.
