Measurement Computing CIO-DAS-TEMP - Manual (Page 7)

3 INTERFACING
The CIO-DAS-TEMP has 32 current inputs desig ned specifically for the AD592 semiconductor-type
temperature sensor.
3.1 CONNECTOR DIAGRAM
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CAL IN
NC
TEMP 31
TEMP 29
TEMP 27
TEMP 25
TEMP 23
TEMP 21
TEMP 19
TEMP 17
TEMP 15
TEMP 13
TEMP 11
TEMP 9
TEMP 7
TEMP 5
TEMP 3
TEMP 1
+15VDC
NC
GND
TEMP 30
TEMP 28
TEMP 26
TEMP 24
TEMP 22
TEMP 20
TEMP 18
TEMP 16
TEMP 14
TEMP 12
TEMP 10
TEMP 8
TEMP 6
TEMP 4
TEMP 2
TEMP 0
The CIO-DAS-TEMP employs the
37-pin,
D-type signal connector
common to many I/O boards. It may be
cabled to directly, or through a C37FF
cable and screw terminal such as the
CIO-MINI37.
Signal wires from the AD592
temperature
sensors should be
connected to the input terminals labeled
TEMP0 through TEMP31.
All the power wires should be
connected in com mon to the +15V DC
power, pin 19.
Please make accurate notes and pay
careful attention to wire connections.
In a large system, finding a misplaced
wire may create hours of work.
Figure 3-1. 37-Pin Connector
3.2 CONNECTING THE AD592 SENSORS
The AD592 semiconductor temperature sensor produces a current proportional to tem perature. The
sensor employs only two leads, a power lead and the return. The amount of current flowing through the
circuit is proportional to temperature and is the signal measured by the CIO-DAS-TEMP.
PIN 2 PIN 1 PIN 3
(-) (+)
NC
IGNAL TO
DAS-TEMP
SENSOR POWER
+15V
VIEW OF SENSOR FROM BOTTOM
WHERE PINS PROTRUDE
The AD592 chip has three leads, two of which are
used. One is the power and one is the return, the
remaining pin is not to be connected and is not
used. The power pins from one or all 32 sensors
are connected to the +15V (pin 19) of the
CIO-DAS-TEMP. The return pin is connected to
the TEMP# of the CIO-DAS-TEMP.
Figure 3-2. AD592 Sensor Connections
3