Spectris PARTICLE MEASURING SYSTEMS Lasair Pro 310 - Page 56

4-3Lasair® Pro Aerosol Particle Counter Operations Manual
Chapter 4 : Connections
Lay the Lasair Pro so that its screen is against a flat surface. Pin numbering and description
are given below:
AUX I/O
Output Voltage
Current Rating
Dry Contact Input Impedance
4-20mA out
4-20mA in (Ch1-2)
Pin 1
+24 VDC
Pin 2
+24 VDC
GND
Pin 3
+5 VDC
(PULSE)
Pin 4
GND
Pin 5
12V Dry
Contact
Pin 6
GND
Pin 1
CH 1 OUT
Pin 5
GND
Pin 2
CH 2 OUT
Pin 6
GND
Pin 3
CH 3 OUT
Pin 7
GND
Pin 4
CH 4 OUT
Pin 8
GND
Pin 1
CH 1 POWER
Pin 4
CH 2 POWER
Pin 2
CH 1 IN
Pin 5
CH 2 IN
Pin 3
GND
Pin 6
GND
4-20mA in (Ch3-4)
Pin 1
CH 3 POWER
Pin 4
CH 4 POWER
Pin 2
CH 3 IN
Pin 5
CH 4 IN
Pin 3
GND
Pin 6
GND
1
1
2
2
3 4
3
4