SD7500CD & SD7500CD-ORP
PRODUCT SPECIFICATION SHEET
UNIVERSAL DIFFERENTIAL pH AND ORP SENSORS
For Use with Conventional pH/ORP Transmitters
Employs differential measurement technique
Buffered reference cell solution resists contamination
Complete encapsulation protects internal electronics
Superior accuracy through elimination of ground loops
Chemically-resistant Ryton® PPS body
Two year limited warranty
Differential sensors have longer working lifetimes
The differential design employs two glass electrodes,
which record pH or ORP measurements differentially with
respect to a third metal electrode. The reference cell of
a differential sensor is actually a measuring electrode
in a concentrated pH 7.0 buffer solution rather than
a traditional silver/silver chloride reference. This type
of reference cell resists contamination by the sample,
improving measurement accuracy and extending sensor
lifetime.
Save time and money with quick and easy maintenance
With differential technology, you won’t have to replace
the entire sensor after just a few months. Simply replace
the salt bridge and refill the reference solution to keep
your electrode working longer.
Don’t want to replace your existing transmitter or
controller?
RECOMMENDED APPLICATIONS:
• Wastewater Treatment
• Drinking Water Treatment
• Odor Scrubbers
• Food Processing
• Metal Finishing
• Pulp and Paper
• Chemical Processing
DESIGNED AND ASSEMBLED IN CALIFORNIA, USA
11751 MARKON DRIVE • GARDEN GROVE, CA 92841 • 714.895.4344 • WWW.SENSOREX.COM
© Sensorex Corporation. All rights reserved. In the interest of improving and updating its equipment, Sensorex reserves the right to alter specifications to equipment at any time.
These differential sensors employ a self-powered
preamplifier, providing a combination sensor output
for deployment flexibility with various transmitters and
controllers.
COMPATIBLE TRANSMITTERS:
• Sensorex TX10
• Sensorex TX100
• Sensorex TX2000
• And More!
SPECIFICATIONS
SD7500CD & SD7500CD-ORP
PRODUCT SPECIFICATION SHEET
OUTLINE AND DIMENSIONS
Cable 20ft,
5 conductor
plus shield
1-1/2” NPT
pH Measurement Range:
ORP Measurement Range
pH Stability
0 to 14
-2000mV to 2000mV
0.03pH per 24 hours, non-cumulative
PPS body and salt bridge, PVDF & ceramic
Wetted Materials
junction, Viton o-rings, titanium solution ground,
pH glass or ORP - platinum band
Transmission Distance:
Temperature Compensation:
Temperature Range:
3000ft (914m)
PT1000 RTD
0-85°C (32-185°F)
100psig @ 40°C (104°F)- for PVC tee/ fitting
Pressure Maximum:
100psig @ 60°C (140°F)- for CPVC tee/fitting
100psig @ 85°C (185°F)- for stainless steel tee/
fitting
Flow Rate
Sensor Cable
10ft/sec maximum (3 meters/sec)
5 conductor plus shield, 22AWG, 20ft (6.1m)
ORDERING INFORMATION
Part Number Description
SD7500CD
SD7500CD-ORP
SDA-7001
SDA-7003
SDA-7010
SDS-7015
Self-powered differential pH sensor for use with conventional pH transmitters, 20ft cable, tinned leads, 1.5” NPT
mounting
Self-powered differential ORP sensor for use with conventional ORP transmitters, 20ft cable, tinned leads, 1.5” NPT
mounting
Salt bridge for SD7500CD & SD7500CD-ORP, 1 each
Salt bridge for SD7500CD & SD7500CD-ORP, 3 each
Salt bridge for SD7500CD & SD7500CD-ORP, 10 each
Standard cell refill solution, 125mL
1-1/2” NPT
Protective
pH Glass or
platinum(ORP)
Solution
Ground
1.85”
(47mm)
pin
1.44”
(37mm)
1.47”
(37mm)
2.13”
(54mm)
6.32”
(160mm)
Salt Bridge
14mm(9/16”) hex
1.92”
(49mm)
Document #450008 Revision A: Published 7/27/16
DESIGNED AND ASSEMBLED IN CALIFORNIA, USA
11751 MARKON DRIVE • GARDEN GROVE, CA 92841 • 714.895.4344 • WWW.SENSOREX.COM
© Sensorex Corporation. All rights reserved. In the interest of improving and updating its equipment, Sensorex reserves the right to alter specifications to equipment at any time.
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