Wavelength Electronics LFI-3751, User Manual

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3
Chapter 3 - Rear Panel Operation
Connector Pinouts
Connector Pinouts
1. Output Connector (9 pin male D-sub plug)
•
The thermoelectric or resistive heater is wired between pins 1 & 2.
Regardless of your sensor type, always attach the positive lead of
the thermoelectric to pin 1.
•
The Auxiliary sensor (10 k
Ω
thermistor, Wavelength part number
TCS-610) connects between pins 3 & 4.
•
A thermally fused fan output is available to drive a 100 mA fan. Wire
the fan between pins 8 & 7.
•
Pin 8 is also used to connect an LM35.
•
For thermistors, RTDs, or the LM335, connect the sensor between pins
5 & 4. For an AD590, connect the positive terminal to pin 6 and the
negative to pin 5. For an LM35, an external 240 k
Ω
resistor is required.
See Chapter 2 for individual sections that detail the sensor usage.
1
9
5
6
1
2
3
4
5
6
7
8
9 TEC +
TEC -
Aux
*Sensor -
Main
AD590 Voltage
*Fan -
*Fan+ (+12 V)
*-12 V
Output Connector
9 pin male D-sub plug
AD590
TO-52
package
1
9
5
6
+ -
case
Bottom
View
AD592
TO-92
package
+ -
1
9
5
6
Bottom
View
1
9
4 5
2 wire RTD
1
9
4 5
3 wire RTD
Kelvin
Lead
1
9
4
5
Thermistor
Example Thermistor Wiring Example RTD Wiring Example AD590 Wiring
* Thermally Fused to 100 mA
to pin 4
to pin 5
TO-92
(plastic package)
1
9
4
5
LM335
TO-46
(metal can package)
+
-
Bottom View
+
-
Bottom
View
Example LM335 Wiring