688 / 836
Time/volume Irrigation
control programs
Irrigated sectors
Fertilization control by EC
Fertilization control
by volume
pH correction
EC probes
pH probes
Agitators control
Filter control,differential
presostate
Solar radiation sensor
Temperature sensor
Control/mixing of
water sources
Volum. counters
Tank level sensors
On/off dosing valves
Motorized dosing valves
Pumps
Page
HI8001/
HI8002 10 32 4
acid
or alk.
3 2 • 2 and 2 •
1 irrig.
4 fertilizer, 1 acid/
alk., 1 mixing, 5
external
•
1 irrigation 16.6
HI8051 10 24 4
acid
or alk.
2 1
• 2 and 2
1
•
1 irrig,
4 fert.
1 external, pH
correction,
4 fertilizer, 3
incoming water
•
1 pH
correction,
4 fertilizer
3 Irrigation,
1 fertilizer
16.6
Fertigation Control Systems
Digital Panel Mount Controllers
Swimming Pool Controllers
PCA Series Analyzers
Acid dosing
chlorine dosing
pH
ORP
Temperature
Logging
Alarm
PC connection
Analog output
Password protection
Page
BL120 • • • • • • • •
• 16.16
BL121
• • • • • • • • • • 16.16
Total and
Free Chlorine
pH
ORP
Temperature
Logging
Alarm
PC connection
Analog output
Password protection
Page
PCA310 •
•
•
•
•
• 16.10
PCA320 •
•
•
•
•
•
•
• 16.10
PCA330 •
•
•
•
•
•
•
•
• 16.10
PCA340 •
•
•
•
•
•
•
• 16.10
pH
ORP
Conductivity
TDS
Temperature
Logging
Alarm
(S)ingle or (D)ual setpoint
ON/OFF control
Proportional control
PID control
SSR relay
Digital output
(S)ingle or (D)ual
Analog output
Password protection
Sensor Check™
Automatic cleaning
Page
HI504 • •
• • • S or D •
•
S or D • • • 16.26
HI720
•
• • • S or D •
•
RS485 S or D • • • 16.28
pH502 •
•
• S or D •
• • RS485
S
•
16.31
pH500 •
•
• S or D • •
RS232
S
•
16.32
mV600
•
•
•
S
• •
RS232
S
•
16.33
HI700
•
•
•
D
•
•
RS485
S
•
16.34
HI710
• • •
•
D
•
•
RS485
S
•
16.34
Comparison Guides
16
Process Instrumentation
16.2
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