OUR pH AND ORP ELECTRODES PROVIDE THE VERY BEST READINGS IN MOST APPLICATIONS
There is a wide range of pH and ORP probes on the market from a variety of manufacturers and providers, but in the end, they all share the same basic elements - pH sensitive glass and a reference cell. Here at South Fork Instruments, we have looked long and hard at the many available options and distilled requirements down to just a few basic sensors that will cover perhaps 90% of all inline process measurements. Having a limited set of probes that adequately and reliably covers so many applications makes for lower costs of maintenance.
Furthermore, we take advantage of the latest Memosens™ digital technology that some of the largest probe manufacturers subscribe to, bringing even more cost savings to users through easier handling, more accurate calibration and expanded data and diagnostics availability. For users that haven’t upgraded to Memosens™, our enhanced probe technology can be deployed in analog versions that will connect to just about any analog pH transmitter/analyzer in the field.
Probes are available in both industry standard 12mm diameter and large volume NPT threaded packages. The high reliability of our pH/ORP sensor range ensures that maintenance requirements and cost of ownership are kept very low.
SFI probes are available with either ceramic diaphragms or ring-shaped, fouling-resistant PTFE diaphragms. A variety of pH glass types are available to suit various application needs and reference options include double junction, ion trap and salt reserves to combat poisoning and electrolyte dilution. Sensors are available as a traditional analog type for connection to most standard pH analyzers and with Memosens™ digital connectivity. For users that require something “special” or specific, we can supply probes with features to supplied specifications.
OPGTDJ
Typical Applications: Fermentation, Cell culture, Chromatography, Filtration, Buffer preparation, CIP, Process water monitoring, Leak detection, more…
OPGTDJ pH/ORP Sensors
| Process Footprint | 12mm Diameter with Pg 13.5 Connector |
| Electrode Length | 120mm |
| Measured Values |
pH: 0…14 ORP: -1500…+1500 mV Temperature: Pt100 and Pt1000 options available |
| Process Temperature Range | -5…135°C |
| Process Pressure Range | 0 to 34.4 bar (0 to 500 psig) @ 25°C |
| pH Impedance | 150 MΩ at 25°C / 77°F |
| Minimum Conductivity | 10 μS/cm |
| Response Time | 95 % of reading in 10 seconds (@ 25°C / 77°F) |
| Connectivity | Analog to standard pH analyzer |
| Connector and Rating | Fixed Nut and Swivel Nut NEMA 6/IP68 |
| Process Contact Materials | pH - Lead-free glass ORP - Platinum/Glass Reference System - PTFE / saturated KCl / AgCl |
| Reference System | Ag/AgCl with double Junction PTFE diaphragms, saturated (> 3M) KCl gel electrolyte and salt ring reserve |
OPS11D
Typical Applications: Potable water/well water, Waste water, Cooling water, Boiler feedwater, General processes, Chemical processes, Scrubbers, Pulp and paper applications, Hydrofluoric acid applications (max 1 g/l), more…
OPS11D Memosens Digital pH Sensors
| Process Footprint | 12mm Diameter with Pg 13.5 Connector |
| Electrode Length | 120, 225, 360mm |
| Measured Values |
pH: AA, AS 1…12 BA, BT 0…14 FA 0…10 Temperature: Built in Temperature Sensor |
| Process Temperature Range |
AA, AS: -15 to 80°C / 5 to 176°F BA, BT: 0 to 135°C / 32 to 275°F FA: 0 to 70°C / 32 to 158°F |
| Process Pressure Range |
AA, AS, FA: 1 to 7 bara / 14.5 to 101.5 psia BA, BT: 1 to 17 bara / 14.5 to 246.6 psia |
| Ambient Temperature | Do not use below -15°C / 5°F (risk of damage). |
| Minimum Conductivity |
Minimum Conductivity
AA, BA, BT, FA: 50uS/cm AS 0.1uS/cm |
| Connectivity | Memosens™ to compatible pH analyzer |
| Connector and Rating | Memosens™ plug-in, non-contact style NEMA 6/IP68 |
| Process Contact Materials |
Lead-free glass (type A, B or F) PTFE Reference System - PTFE / saturated KCl / AgCl |
| Reference System |
AA, BA, FA: Ag/AgCl with 3M KCl gel electrolyte, AgCl-free AS: Ag/AgCl with saturated (> 3M) KCl gel electrolyte and salt rings, AgCl-free BT: Ag/AgCl with ion trap and 3M KCl gel electrolyte |
OPS71D
Typical Applications: Fermentation, Cell culture, Chromatography, Filtration, Buffer preparation, Pharmaceutical formulation, CIP, Chemical processes, more…
OPS71D Memosens Digital pH Sensors
| Process Footprint | 12mm Diameter with Pg 13.5 Connector |
| Electrode Length | 120., 225mm |
| Measured Values |
pH: 0…14 Temperature: Built in Temperature Sensor |
| Process Temperature Range |
TB: 0 to 140°C / 32 to 284°F TU 0 to 100°C / 32 to 212°F (continuous) 0 to 140°C / 32 to 284°F (sterilization) |
| Process Pressure Range |
TB: 1 to 14 bara / 14.5 to 203 psia TU: 1 to 11 bara / 14.5 to 159 psia |
| Ambient Temperature | Do not use below -15°C / 5°F (risk of damage). |
| Minimum Conductivity | 10uS/cm |
| Connectivity | Memosens™ to compatible pH analyzer |
| Connector and Rating |
Memosens™ plug-in, non-contact style NEMA 6/IP68 |
| Process Contact Materials |
Lead-free glass Reference system - ceramic / saturated KCl / AgCl |
| Reference System |
TB: Ag/AgCl reference with ion trap, acrylamide-free, non-cytotoxic 3M KCl reference electrolyte TU: Ag/AgCl reference with ion trap, acrylamide-free, 3M KCl reference electrolyte |
OCPF81/82/81D/82D
Typical Applications: Flotation, Leaching, Process Water, Coagulation Optimization, Neutralization, Wastewater Monitoring, more…
OCPF81/82/81D/82D pH/ORP Sensors
| Process Footprint | ¾” NPT Male Thread |
| Electrode Length | 120mm |
| Measured Values |
pH: LH 0…14 NN 0…11 (11…14 w/reduced accuracy) ORP: PA,PE -1500…+1500 mV Temperature: Std for 81D, optional for 81 |
| Process Temperature Range |
LH: 0…110°C / 32 to 230°F NN/PA/PE: 0 to 80°C / 32 to 176°F |
| Process Pressure Range |
1 to 10 bara / 14.5 to 145 psia (80°C / 176°F) 1 to 3.5 bara / 14.5 to 50.8 psia (110°C / 230°F) |
| Ambient Temperature | Risk of freezing below 0°C / 32°F). |
| Minimum Conductivity | 10uS/cm |
| Connectivity | Versions available for connection to Memosens™ and analog analyzers |
| Connector and Rating |
Memosens™: NEMA 6/IP68 Plug-in Cable: NEMA 6/IP68 Fixed Cable: NEMA 4/IP67 |
| Insertion Length |
Short Shaft: 23mm / 0.91” Long Shaft: 58.5mm / 2.3” Flat pH Membrane: 12.5mm / 0.49” |
| Process Contact Materials |
Housing: PPS (Polyphenylene sulfide) pH Sensor: Lead-free Glass ORP Sensor: Platinum/Glass Reference System: KNO3 and KCl/AgCl |
| Cable Length (fixed cable versions) | Std: 15’, 30’ |
LH, NN refer to different pH range/versions of the OCPF81/81D
PA, PE refer to different ORP range/versions of the OCPF82/82D
OCPS77E
Typical Applications: Biotechnology, Food Applications, Brewing, Dairy, more…
OCPS77E Memosens Digital ISFET pH Sensors
| Process Footprint | 12mm Diameter with Pg 13.5 Connector |
| Electrode Length | 120, 225, 360mm |
| Measured Values |
pH: 0…14 Temperature: -15…135°C |
| Process Pressure Range | 0.8 to 11 bar / 11.6 to 159.5 psia |
| Process Pressure/Temperature Limits |
Max. Operating: 11 bar / 160 psia @ 100 °C / 212 °F Max. Sterilization: 4 bar / 58 psia @ 135 °C / 275 °F, 1 hr maximum |
| Minimum Conductivity | 50 μS/cm |
| t90 Response Time | < 5 seconds (buffer change from 4 to 7) |
| Connectivity | Memosens Digital Communication to Local Analyzer |
| Connector and Rating |
Swivel Nut NEMA 6/IP68 |
| Process Contact Materials | PEEK / FFKM / AgCl / Ceramic – Zirconium Dioxide |
Have More Questions?
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SOUTH FORK INSTRUMENTS
3845 Buffalo Road
Auburn, CA 95602
Tel: (+1) 925-461-5059
Fax: (+1) 925 553 3531
