P
ORTA
C
OUNT
®
Plus Model 8020 Technical Addendum
revised 7-27-2001
TSI Incorporated, St. Paul, Minnesota, USA
27
Copyright © 2001 all rights reserved
N95-Companion Sampling Pendant
N95-Companion Back Panel
N95-Companion Control Connector
Contact
Number
Function
Comment
1
Ground (-)
2
+ 5 VDC (from PortaCount)
Supply voltage for all circuits
except solenoid valve in
pendant
3
N95 Attach Signal
(to PortaCount)
Jumpered to ground to signal
PortaCount that N95-
Companion is attached
4
+ 5 VDC Solenoid valve
voltage feed (from PortaCount)
High current voltage supply
for solenoid valve in pendant
5
Solenoid valve control
(from PortaCount)
0.0 VDC = sample from
sample tube (normal position)
5.0 VDC = sample from
ambient tube (maintain voltage
while sampling)
6
Not used
Sample outlet
(to N95-Companion)
Ground (-)
Pendant valve control
connector
(from N95-Companion)
+ 5 VDC
(to hold valve
open on ambient
sample tube)
Factory use only
Particle Classifier
Check Button
(turns DMA off)
Control Connector
(6-pin MMJ to PortaCount)
Use TSI cable 1303522