Georg Fischer SIGNET 2714-2717 User Manual
Signet 2714-2717 Twist-Lock pH/ORP Electrodes
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4
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Features
• Durable CPVC or
glass body with
Twist-Lock connector
• Flat or bulb surfaced
electrodes available
Protected bulb Flat surface
Description
Feature-packed Signet 2714-2717
Twist-Lock pH & ORP Electrodes
provide unsurpassed simplicity, reliability and accuracy for a wide variety
of industrial applications. Rugged
construction, large reference volume
and intelligent positioning of internal elements combine to extend the
service-life of these dependable and
highly responsive electrodes. Flat versions allow sediment and particles to
sweep past the measurement surface,
System Overview
Signet Instrument
(sold separately)
678
RELAY 2
10
RELAY 1
pH
12
2
14
0
ENTER
5700 8750
In-Line Installation
Pipe, Tank, Wall MountPanel Mount
Signet pH/ORP
Transmitter
(sold separately)
Signet Universal
Adapter Kit
(sold separately)
(3-8050)
Submersible Installation
Panel, Pipe, Tank, Wall Mount
Compatible with
the 2720
Preamplifier
Wet-Tap
minimizing risks of abrasion, breakage and coating. The unique TwistLock design enables sensor connections to the Signet 2720 preamplifier
in one easy motion. The integral
temperature sensor built into the pH
electrode or the I.D. resistor in the
ORP electrodes is used for automatic
sensor recognition by Signet pH/ORP
instrumentation, adding convenience
and versatility to our systems.
Wet-Tap Installation
Signet Instrument
(sold separately)
678
RELAY 2
10
RELAY 1
pH
12
2
14
0
ENTER
5700 8750
Panel, Pipe, Tank, Wall Mount
Signet Instrument
(sold separately)
678
RELAY 2
10
RELAY 1
pH
12
2
14
0
ENTER
5700 8750
• Large reference
volume and solid
polymer electrolyte
• Integrated temperature sensor (pH)
• Designed for maximum protection
from process
contamination
• DI option (pH) for
pure water use
(<100 μS)
• HF option (pH) for
applications contain-
ing trace amounts of
HF (<2%)
Applications
• Water & Wastewater
Treatment
• Neutralization
Systems
• Effluent Monitoring
• Sanitization Systems
• Commercial Pools &
Spas
• Aquatic Animal Life
Support Systems
• Process Control
• Cooling Towers
• Boiler Protection
Signet
2714-2717
pH/ORP
Electrode with
2720
Preamplifier
(each sold
separately)
Signet sensor cap
(sold separately)
Signet Fittings*
(sold separately)
Signet
2714-2717
pH/ORP
Electrode with
2720
Preamplifier
(each sold
separately)
Pipe extension
or conduit
with 3/4 in.
NPT or
ISO 7/1-R
3/4 threads
(customer supplied)
Signet 2714-2717
pH/ORP Electrode
with Signet 2720
Preamplifier
Signet
2716-WT
2717-WT and
2720 preamp.
(sold separately)
Signet 3719
WetTap Assembly
(sold separately)
Signet Fittings*
(sold separately)
* See Fittings section for more information.
84
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Dimensions
/
2714/2714-HF pH Electrode
2715 Flat ORP Electrode
27 mm/
1.0 in.
28.7 mm/
1.1 in.
64 mm/
2.5 in.
23 mm/
0.9 in.
2716/2716-DI Bulb pH Electrode
2717 Bulb ORP Electrode
27 mm/
1.0 in.
28.7 mm/
1.1 in.
64 mm/
2.5 in.
23 mm/
0.9 in.
2716-WT and 2717-WT
WetTap Electrode
FPM
o-rings
11.9mm
(.47 in.)
pH
Bulb
92 mm/
3.6 in.
92 mm/
3.6 in.
Twist-Lock
Connector
PG-13.5 Threads
209 mm
(8.23 in.)
102 mm/
4.0 in.
110 mm
4.4 in.
ORP
Platinum
Band
Specifications
2714 - 2717 pH/ORP Electrodes
General
Operating Range:
• 2714, 2716, 2716-DI: 0 to 14 pH
• 2714-HF: 0 to 12 pH
• 2715, 2717: ± 2,000mV
Pipe Size Range:
0.5 in. and up: use Signet installation
fittings from 0.5 to 4.0 in. (use pipe
adapter in pipes over 4 in.)
Mounting:
• In-line pipe mounting: > 50° to the
horizontal plane
• Submersion with 3-2720 preamplifier
requires 3/4 in. NPT or ISO 7-1/R 3/4 in.
Male threaded extension.
Efficiency: > 97% @ 25°C (77°F)
pH Response Time:
< 5 secs. for 95% of signal change
ORP response time: application dependent
Reference:
Electrolyte: Solidified Acrylamide Gel
• 3.5M KCI
• 0.1 M KCl (2716-DI only)
Secondary junction: Nylon filament
Element: Ag/AgCl
Primary Functions:
• 2714/2715: Flat surface resists fouling
• 2716/2717: Bulb surface for general use
• 2714-HF: Extended use in applications
with trace hydrofluoric acid
( <2%)
• 2716-DI: Extended use in pure waters
(<100 μS)
Temperature Sensor:
3K Balco (3000 Ω = 25°C)
Response Time, τ:
• 2714: 140 secs. • 2716: 196 secs.
Wetted Materials
• Body: CPVC
• O-rings: FPM
• O-ring junction: Porous UHMW
Polyethylene
• Sensing Surface:
glass membrane (pH), platinum (ORP)
Max. Temperature/Pressure Rating
Operating Temperature:
• 2716/2717: 0°C to 85°C (32°F to 185°F)
• 2714/2715: 10°C to 85°C (50°F to185°F)
• 2714-HF: 0°C to 50°C (32F° to 122°F)
Storage Temp.: -10°C (15°F) to 30°C (86°F)
Temperature and Pressure Limit:
• 6.89 bar @ 0°C (100 psi @ 32°F to 149°F)
• 4.00 bar @ 85°C (58 psi @ 150°F to 185°F)
See Temperature and Pressure graphs for more
information.
Shipping Weight: 0.2 kg (0.4 lbs.)
2716-WT and 2717-WT Wet-Tap
pH/ORP Electrodes
General
Operating Range:
• pH: 0 to 14 pH
• ORP: -2000 to +2000 mV
Compatibility:
Signet 3719 Wet-Tap
Connector (CPVC): Twist-Lock
Mounting:
Any angle is acceptable. Use with
3719 wet-tap assembly for mounting
electrodes.
Efficiency: > 97% @ 25°C (77° F)
Response Time:
• pH: < 5sec. for 95% of signal change
• ORP: Application dependent
Reference:
Junctions: Porous PTFE
Electrolyte: 3.5M KCl
Elements: Ag/AgCl
Temp. Sensor (pH):
• 3K Balco (3-2716-WT)
• Temp. Response Time (τ): 438s
Wetted Materials
• Body : Glass
• O-rings: FPM
• Junctions : Porous PTFE
• Sensing surface:
glass Membrane (pH), platinum (ORP)
Max. Temperature/Pressure Rating
Operating Temperature:
0°C to 85°C (32°F to 185°F)
Storage Temperature:
0°C to 85°C (32°F to 185°F)
Temperature and Pressure Limit:
6.9 bar @ 65°C (100 psi @ 149°F)
See Temperature and Pressure graphs for
more information.
Shipping Weight: 0.22 kg (0.5 lb.)
Standards/Approvals
• CE
• Manufactured under ISO 9001:2000
for Quality and ISO 14001: 2004 for
Environmental Management
Choosing
Products
Instrument
Multi-Pa-
rameter
Flow
pH/ORP
Conductivity/
Resistivity
Pressure, Level
Temperature,
Products
Other
Installation
Wiring &
Reference
Technical
Temperature/
Pressure
Graphs
of Terms
Glossary
Reference
Part No.
Index
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