Signet 2724-2726 pH/ORP Electrodes
General Purpose
Compatible with ALL Signet pH/ORP instruments
and SmartPro transmitters
Flat
Glass
The Signet 2724-2726 pH and ORP electrodes are general
purpose sensors ideal for a wide range of applications.
These feature a patented reference design and uses the
unique foul-proof patented DryLoc® connector. The large
area PE reference junction and pathway is constructed
to increase the total reference e ectiveness and ensures
long service life.
The DryLoc
plated contacts readily connects the sensor to the
mating 2751 pH/ORP Smart Sensor Electronics or
the 2760 Preamplifi er. The robust Ryton® threaded
sensor body and choice of fl at pH, bulb pH, or fl at ORP
sensing elements allows a broad range of chemical
and mechanical compatibility for a wide variety of
applications.
® connector with corrosion resistant gold
Protected
Bulb
Features
• Patented reference design for exceptional
performance and prolonged life in harsh
environments*
• Memory chip enabled for access to a wide
range of unique features when connected to the
Signet 2751 pH/ORP Smart Sensor Electronics
• Ryton® (PPS) body for broad range of chemical
compatibility
• Patented DryLoc® connector with gold plated
contacts
• Special design allows for installation at any
angle, even inverted or horizontal
• ¾” NPT or ISO 7/1-R 3/4 threaded sensors
for use with reducing tees DN15 to DN100
(½ to 4 in.)
• Mounts in Signet standard fi ttings from
DN15 to DN100 (½ to 4 in.)
• Quick temperature response
• Bulb and fl at HF resistant glass available
for trace HF, in less than 2% concentration
applications
• Low conductivity sensor available for liquids down
to 20 μS/cm
There are two optional pH sensing versions available, HF
and LC. The HF version is for applications where traces
of hydrofl uoric acid (2% or less) will attack standard pH
glass. The LC version can be used for low conductivity
fl uids 20 - 100 µS/cm nominal and below 20 µS when
mounted under controlled conditions.
The quick temperature response is available in either
a Pt1000 or 3 K temperature sensor and allows
compatibility with all Signet pH/ORP instruments. The
2724-2726 electrodes incorporate ¾ inch NPT or ISO
7/1-R 3/4 threads for installing into standard pipe-tees.
They can also be mounted directly into Signet standard
fi ttings, DN15 to DN100 (½ to 4 inch).
Applications
• Water & Wastewater Treatment
• Neutralization Systems
• E uent Monitoring
• Sanitization Systems
• Pool & Spa Control
• Aquatic Animal Life Support Systems
• Process Control
• Cooling Towers
*U.S. Patent Nos.: 6,666,701, 7,799,193 B2,
7,867,371 B2 and 8,211,282 B2
Specifi cations
General
Performance E ciency >97% @ 25 °C (77 ° F)
Operating Range pH 0 to 14 pH
ORP ±2000 mV
3-2726-LC Low conductivity fl uids; 20 - 100 µS/cm nominal < 20 µS; fl ow must
be less than 150 ml/min in a properly grounded system
3-2724-HF, 3-2726-HF Hydrofl uoric acid resistant glass, pH 6 or below; trace HF <2%
Compatibility
2751 Smart Sensor Electronics (for 8900, 9900, 9950, 4 to 20 mA or Profi bus Concentrator),
2760 Preamplifi er
Temperature Sensor
Pt1000 versions Compatible with Signet 2751 pH/ORP Smart Sensor Electronics for
connection to a PLC or to the Signet 8900, 9900 or 9950 instruments
3 KΩ Balco versions Compatible with Signet 2751 pH/ORP Smart Sensor Electronics or with
Signet 2760 pH/ORP Preamplifi er for connection to the
Signet 8750 pH/ORP Transmitter
Process Connection
¾ in. NPT ISO 7/1-R 3/4 Mounts into Signet fi ttings
Wetted Materials
®
pH Ryton
ORP Ryton
Max. Temperature/Pressure Rating
Operating Temperature Range*
Operating Pressure Range 6.8 bar @ -10 to 65 °C (100 psi @ 14 to 150 °F)
*Best performance for 2724-HF, 2726-HF sensors is above 10
Recommended Storage Temperature
The electrode glass will shatter if shipped or stored at temperature below 0 °C (32 °F)
The performance life of the electrode will shorten if stored at temperatures above 50 °C (122 °F)
Mounting
In-line Mounting Use the sensor threads
Use a Signet standard fi tting up to 4 in.
Sensor can be mounted at any angle
Submersible Mounting Use threads on models 2751 or 2760
Requires ¾ inch NPT or ISO 7/1-R 3/4 male threaded liquid tight extension conduit.
Shipping Weight
0.25 kg 0.55 lb
Standards and Approvals
RoHS compliant, China RoHS
Manufactured under ISO 9001 for Quality, ISO 14001 for Environmental Management and
OHSAS 18001 for Occupational Health and Safety
(PPS), glass, UHMW PE, FKM
®
(PPS), glass, UHMW PE, FKM, Platinum
-10 °C to 85 °C 14 °F to 185 °F
4 bar @ 65 to 85 °C (58 psi @ 150 to 185 °F)
°C (50 °F)
0 °C to 50 °C 32 °F to 122 °F
See Temperature and Pressure graphs for more information
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