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1. Wiring
OMEGA PH-2720-PA pH/ORP Preamplifier Instructions
SAFETY INSTRUCTIONS FOR IN-LINE ELECTRODE INSTALLATION
1. Do not remove from pressurized lines.
2. Do not exceed maximum temperature/pressure specifications.
3. Wear safety goggles or face shield during installation/service.
4. Do not alter product construction.
Failure to follow safety instructions may result in severe personal injury!
2. Installation Fittings
Consult OMEGA for additional fitting information.
ENTER
0
ALARM 1
ALARM 2
2
4
6
7
8
10
12
14
pH
OMEGA
PHCN-5700
Brown
Blue
Black
Red
Green
White
(mV Input)
(Iso. Gnd)
(V-)
(V+)
(T+)
(T-)
Silver (earth ground)
RLY 1
RLY 2
RLY 3
RLY 4
pH CONTROLLER
ENTER MOD
pH
CAL RELAY OUTPUT
mV
TEMP
OMEGA
PHCN-90
Red
Black
Green
Brown
White
Blue
(#10) V+
(#11) V-
(#12) T+
(#13) Ain
(#14) ISO
(#14) ISO
• Use X1 gain selection
Silver (earth ground)
Technical Notes:
• Use 6-conductor shielded cable for cable extensions to 120 m (400 ft)
• Shield must be maintained through cable splice
Silver (earth ground)
Brown
Blue
Green
White
Red
Black
(mV Input)
(Iso. Gnd)
(T+)
(T-)
(V+)
(V-)
OMEGA
PHCN-5700
OMEGA
ORCN-90
ORP CONTROLLER
ENTER MOD
CAL RELAY
OUTPUT
ORP
mV
RLY 1
RLY 2
RLY 3
RLY 4
Red
Black
Green
White
Brown
Blue
(#10) V+
(#11) V-
N/C
N/C
(#13) Ain
(#14) ISO
• Use X1 gain selection
Silver (earth ground)
Preamplifier:
PH-2720-PA
pH
Electrodes:
PHE-3271
PHE-2716
ORP
Electrodes:
ORE-2715
ORE-2717
Preamplifier:
PH-2720-PA
pH
Electrodes:
PHE-3271
PHE-2716
ORP
Electrodes:
ORE-2715
ORE-2717
Preamplifier:
PH-2720-PA
pH
Electrodes:
PHE-3271
PHE-2716
Preamplifier:
PH-2720-PA
ORP
Electrodes:
ORE-2715
ORE-2717
• 0.5 to 4 in.
• PVC or CPVC
• Mounts via glue-on fittings
Plastic tees
PVC glue-on
saddles
(O-ring not
required)
• 2 to 4 in., use 1-7/16 in. hole in pipe
• Align wedge arrows with saddle
arrows during assembly.
Type Description
Iron
strap-on
saddles
• 2 to 4 in., use 1-7/16 in. hole in pipe
Carbon steel
weld-on
weldolets
• 2 to 4 in, use 1-7/16 in. hole in pipe
• Remove insert before welding
• Installed by certified welder only
• 0.5 to 2 in.
• Mounts on threaded pipe ends
Carbon steel
threaded tees
Universal
pipe adapter
for large pipes
• For existing pipe fittings 2 in. and up
• External 1-1/4 inch NPT male threads
Type Description