Omega Products PH-2720-PA Installation Manual
User’s Guide
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www.omega.com
e-mail: info@omega.com
PH-2720-PA
Preamplifier
OMEGAnet® Online Service Internet e-mail
www.omega.com info@omega.com
Servicing North America:
USA: One Omega Drive, P.O. Box 4047
ISO 9001 Certified Stamford CT 06907-0047
TEL: (203) 359-1660 FAX: (203) 359-7700
e-mail: info@omega.com
Canada: 976 Bergar
Laval (Quebec) H7L 5A1
TEL: (514) 856-6928 FAX: (514) 856-6886
e-mail: info@omega.ca
For immediate technical or application assistance:
USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA
Customer Service: 1-800-622-2378 / 1-800-622-BEST
Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN
TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA
®
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Mexico: En Español: (001) 203-359-7803 e-mail: espanol@omega.com
FAX: (001) 203-359-7807 info@omega.com.mx
Servicing Europe:
Benelux: Postbus 8034, 1180 LA Amstelveen, The Netherlands
TEL: +31 (0)20 3472121 FAX: +31 (0)20 6434643
Toll Free in Benelux: 0800 0993344
e-mail: nl@omega.com
Czech Republic: Rudé armády 1868, 733 01 Karviná 8
TEL: +420 (0)69 6311899 FAX: +420 (0)69 6311114
Toll Free: 0800-1-66342 e-mail: czech@omega.com
France: 9, rue Denis Papin, 78190 Trappes
TEL: +33 (0)130 621 400 FAX: +33 (0)130 699 120
Toll Free in France: 0800-4-06342
e-mail: france@omega.com
Germany/Austria: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany
TEL: +49 (0)7059 9398-0 FAX: +49 (0)7056 9398-29
Toll Free in Germany: 0800 639 7678
e-mail: germany@omega.com
United Kingdom: One Omega Drive, River Bend Technology Centre
ISO 9002 Certified Northbank, Irlam, Manchester
M44 5EX United Kingdom
TEL: +44 (0)161 777 6611 FAX: +44 (0)161 777 6622
Toll Free in United Kingdom: 0800-488-488
e-mail: sales@omega.co.uk
It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that
apply. OMEGA is constantly pursuing certification of its products to the European New Approach
Directives. OMEGA will add the CE mark to every appropriate device upon certification.
The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts
no liability for any errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, patient-connected applications.
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!
1. Wiring
Preamplifier:
PH-2720-PA
pH
Electrodes:
PHE-3271
PHE-2716
Preamplifier:
PH-2720-PA
pH
Electrodes:
PHE-3271
PHE-2716
ORP
Electrodes:
ORE-2715
ORE-2717
Silver (earth ground)
Brown
Blue
Green
White
Red
Black
Silver (earth ground)
Red
Black
Green
Brown
White
Blue
• Use X1 gain selection
(mV Input)
(Iso. Gnd)
(T+)
(T-)
(V+)
(V-)
(#10) V+
(#11) V-
(#12) T+
(#13) Ain
(#14) ISO
(#14) ISO
7
6
8
4
10
ALARM 1
pH
2
0
OMEGA
PHCN-5700
pH CONTROLLER
RLY 1
RLY 2
RLY 3
RLY 4
pH
ENTER MOD
CAL RELAY OUTPUT
OMEGA
PHCN-90
Preamplifier:
PH-2720-PA
ALARM 2
12
14
ENTER
pH
Electrodes:
PHE-3271
PHE-2716
ORP
Electrodes:
ORE-2715
ORE-2717
Preamplifier:
PH-2720-PA
mV
TEMP
Silver (earth ground)
Brown
Blue
Black
Red
Green
White
Silver (earth ground)
Red
Black
Green
White
Brown
Blue
(mV Input)
(Iso. Gnd)
(V-)
(V+)
(T+)
(T-)
(#10) V+
(#11) V-
N/C
N/C
(#13) Ain
(#14) ISO
OMEGA
PHCN-5700
ORP CONTROLLER
RLY 1
RLY 2
RLY 3
RLY 4
ORP
ENTER MOD
CAL RELAY
OUTPUT
OMEGA
mV
ORCN-90
ORP
• Use X1 gain selection
Electrodes:
ORE-2715
ORE-2717
Technical Notes:
• Use 6-conductor shielded cable for cable extensions to 120 m (400 ft)
• Shield must be maintained through cable splice
2. Installation Fittings
Type Description
Plastic tees
PVC glue-on
saddles
(O-ring not
required)
Iron
strap-on
saddles
Consult OMEGA for additional fitting information.
• 0.5 to 4 in.
• PVC or CPVC
• Mounts via glue-on fittings
• 2 to 4 in., use 1-7/16 in. hole in pipe
• Align wedge arrows with saddle
arrows during assembly.
• 2 to 4 in., use 1-7/16 in. hole in pipe
Type Description
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
Carbon steel
threaded tees
Universal
pipe adapter
• 0.5 to 2 in.
• Mounts on threaded pipe ends
• For existing pipe fittings 2 in. and up
• External 1-1/4 inch NPT male threads
for large pipes
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