Hach 900 MAX Instrument Manual page 104

Section 7
Figure 32 Utility Board
J19 J7
J1
J2
ID
J1
J2
J3
J4
J5
J6
J7
J8 Analog Input Channel 1
J9 Analog Input Channel 2
J10 Analog Input Channel 3
J11 Analog Input Channel 4
Page 102
Circuit Board Identification
UTILITY BOARD
J5
J20
F2
Table 21 Utility Board Connections
Description
Distributor
Auxiliary
pH/ ORP
CPU Board
Rain Gauge
Bubbler Module
Fluid Sensor #1
J17
J21
J18
C11
TB1
J4
J8 J9 J10 J11 J12 J13 J14
ID
J12 Analog Input Channel 5
J13 Analog Input Channel 6
J14 Analog Input Channel 7
J15
J16
J17
J18
J19 Fluid Sensor #2 (closest to pump)
J20
J21
J22
J6
J3
J15
J22
J16
Description
Thermal Control
12 V dc Main
Relay Output
4–20 mA PCB
D.O. / Conductivity
Submerged Sensor
5 amp External Fuse
8990mnt.fm