405-DPAS-SC-K8S pH Probe

Specially developed for in-line measurements in biotech and food & beverage applications

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Gel-filled probe for biotech and food & beverage applications

405-DPAS is a pre-pressurized, gel-filled, low maintenance pH probe, specially developed for in-line measurements in biotech and food & beverage applications. It is designed for use in reactors, tanks, open basins and transfer lines under harsh chemical process conditions.

Features and Benefits

Low maintenance
The 405-DPAS electrode is filled with gel-reference electrolyte which is pre-pressurized to 2.5 bar (36 psi). The internal over-pressure ensures gradual electrolyte outflow efficiently cleaning the diaphragm and preventing influx of process medium.
Long operational probe lifetime
The probe is further provided with a patented silver-ion trap to prevent diaphragm fouling in sulfide-containing media and prolonging the operative life of the probe.

Short description Sterilizable pre-pressurized gel-filled electrolyte pH probe
pH-range 0…12
Temperature range 0...100 °C (32...212 °F)
Pressure resistance (bar) up to 2.5 bar overpressure
Pressure resistance (psi) up to 36 psi overpressure
Diaphragm ceramic
Number of diaphragms 1
Reference system Argenthal system
Silver-ion trap yes
Sterilizable yes
Autoclavable yes
ISM no

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“Industrial Technical Services is a single source Instrumentation and Automation company. We provide certified calibrations, PLC programming, custom controls and Panels”.


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