YSI 6500 Environmental Process Monitor - Manual (Page 81)

Accessories Appendix D
SONDE CABLE CONNECTIONS (SDI-12 COMMUNICATIONS
LINK)
The sonde can be equipped with a detachable or non-detachable cable or a bulkhead connector
that allows the use of various YSI field cables. The end connection of the cable is a military-style
8-pin connector (MS-8) that plugs directly into the 6502 Breakout Box.
In close range Breakout Box installations, Figure 2, the 6500 Monitor uses a standard MS-8
connection to interface with the 6 foot (1.8 m) 6507 Patch Cable, through a Gland Fitting (YSI
064007), to the 6502 Breakout Box. This configuration allows a maximum cable length of 250’
between the 6500 Monitor and the sonde. The Patch Cable should be landed to TB-1 in the
breakout box. The MS-8 connector for Sonde hookup is pre-wired to TB-2 or TB-3. See Figure
4 for further information.
Enter
Esc
Cal
6500 6500
EN VIRON MEN TAL EN VIRON MEN TAL MON ITORIN G MON ITORIN G SYSTEM SYSTEM
21.2 Temp
7.35 DO
6.53 pH
6507
6’ Patch cable
w/ MS-8
Sonde cables
w/ MS-8
Stream
sondes
6502
Breakout Box
6507
Gland Fitting
Figure 2
Enter
Esc
Cal
6500 6500
EN VIRO N MEN TAL EN VIRO N MEN TAL MO N ITO RIN G MO N ITO RIN G SYSTE M SYSTE M
21.2 Temp
7.35 DO
6.53 pH
Junction Box
6508
Sonde cables
w/ MS-8
Stream
Sonde
6502
Breakout Box
Conduit &
6507
6’ Patch cable
w/ MS-8
customer-supplied
3-conductor cable
Figure 3
In remote Breakout Box installations, Figure 3, the 6500 Monitor uses a standard MS-8
connection to interface with the 6 foot (1.8 m) 6507 Patch Cable that is connected in the 6508
Junction Box. The Junction Box is then connected by conduit and three- conductor cable to the
Breakout Box(s). The customer is advised to supply rigid conduit and 18 AWG or heavier
shielded multi-conductor cable to connect between the Junction Box and the Breakout Box at the
Sonde installation site. This configuration allows a maximum cable length of 250’ between the
6500 Monitor and the Sonde. The cable from the Junction Box should be landed to TB-1 in the
breakout box. The MS-8 connector for sonde hookup is pre-wired to TB-2 or TB-3. See Figure 4
for further information.
YSI Incorporated 6500 Environmental Process Monitor 78