EasyFerm Plus pH Sensors
EasyFerm Plus - Traditional
Traditional sensors offer a standard mV output signal and a wire variety of electrical connectors to work with most transmitters and controllers.
EasyFerm Plus - Arc
Arc intelligent sensor technology securely stores your sensor data and outputs your measurement information directly to the control system.
EasyFerm Plus - Memosens
Memosens technology allows upgrading an existing installation with proven Hamilton pH sensor technology.
Phermlyte Electrolyte
Phermlyte electrolyte paired with the pre-pressurized reference and HP Coatramic diaphragm delivers constant electrolyte flow resulting in drift free measurement over the life of the sensor.
Glass Membrane Options
Only Hamilton has specialized membrane glass for biopharma applications. PHI glass offers high chemical robustness and very little shift after repeated autoclave and SIP sterilizations. HB glass is a good choice for fast recovery after CIP and SIP cycles.
Sensor Outputs
Traditional sensors offer a standard mV signal that works with existing bioreactors and transmitters. Arc sensors can be connected directly to the control system through 4-20mA or digital signals. Memosens sensors are fully compatible with all existing Memosens transmitters on the market.
Specific Applications
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App Note - Online monitoring of CHO cell culture
A suite of Hamilton sensors is used to continuously monitor batch fermentation of CHO cells for tighter process control. -
App Note - Arc DO, pH, Cond in production scale fermentation process
GEA, a global equipment and process technology provider, integrates Arc sensor technology in fermentation plants at their GEA Diessel subsidiary in Hildesheim, Germany.
Resources
Hamilton's knowledge base provides a range of explanatory articles, frequently asked questions, and document downloads.
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Catalog - Process Analytics
Download the Process Analytics sensor catalog to learn about the complete offering of Hamilton process sensors and accessories. -
Brochure - Arc Intelligent Sensors
Arc Intelligent sensors offer a new way to connect to your process control system. -
Manual - Process pH and ORP - Traditional
General Process pH and ORP sensor manual for EasyFerm, Polilyte Plus, ChemoTrode, FermoTrode, IonoTrode, MecoTrode, Polilyte Pro, Polyplast Pro, Liq-Glass, and EasyControl products.
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Choosing between EasyFerm Plus and EasyFerm Bio products?
EasyFerm Plus sensors are designed to withstand repeated SIP and autoclavation sterilization cycles found in the biopharmaceutical industry. EasyFerm Bio sensors have a unique biocompatible electrolyte for applications in the food and beverage industry where CIP cleaning is commonplace. -
What is the Everef F Reference System?
The Everef-F reference system uses a silver ion barrier to separate the reference element from the electrolyte. This design prevent Ag+ precipitation from occurring and clogging the diaphragm. It is a perfect design for applications with proteins or sulfides in the process liquid. -
What is the expected lifetime of my pH sensor?
Expected pH sensor lifetime is dependent on the application. Exposure to strong chemicals, elevated temperature, fluctuating pressure, and solid build-up can all impact the sensor life. As the sensor ages, a sluggish response may become more apparent, and will require more frequent calibrations to compensate for this change. The overall health of the Arc pH sensors can be seen using the quality indicator in ArcAir software. Click to learn more about sensor lifespan and expiration in the Knowledgebase article.
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pH and ORP Sensor Reference Design
Pre-Pressurized vs. refillable vs. polymer vs. viscous electrolyte? This article discusses basic pH reference design benefits for each product family. -
What is a Liquid Earth (LEVP) for a pH sensor?
Some Hamilton process pH sensors have the option for a liquid earth (LEVP) connection; however many end-users are unfamiliar with its benefits. -
Sources of pH Measurement Error
pH Sensors are electrochemical devices with limited lifespans. Changing process conditions directly impact each component within the combination electrode thus can be sources of error leading to inaccuracy and eventual death of the sensor.
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