HI11311

Description

The HI11311 electrode features a built-in microchip that stores sensor type, serial number, and calibration information. It also features a single ceramic junction and the spherical pH sensing portion is made with high temperature glass. This design consideration is ideal for general purpose laboratory use. This probe features a 3.5 mm connector designed exclusively to be used with Hanna Instruments edge® Tablet Meters.

•  3.5 mm Connector
•  Double Junction Reference
•  Matching Pin

Matching Pin
•  The HI11311 integrates a matching pin into the electrode and is part of the Hanna Instruments Sensor Check^™ feature.
•  The matching pin checks the impedance across the indicating and reference electrodes.
•  This allows the edge meter to alert the user in the event that the glass of the indicating pH electrode is cracked and the condition of the reference junction.

  Built-In Microchip
•  The built-in microchip stores sensor type, serial number and calibration information including date, time, offset, slope, probe condition and buffers used.
•  This information is automatically retrieved by edge® once the electrode is plugged in.
•  The ability to transfer information allows for hot swapping of probes without having to recalibrate.
•  All pH measurements are performed within the electrode and transferred digitally to the meter.
•  This overcomes any noise issues associated with the traditional high impedance analog measuring system.
•  Electrical noise can be generated from a built in temperature sensor and while working in a humid environment.

  Spherical Glass Tip
•  The spherical shaped tip design allows for a wide area of contact with the sample.
•  This permits a faster electrode response with a higher degree of stability.
•  The HI11311 utilizes a high temperature (HT) glass formulation.
•  A pH electrode with general purpose (GP) glass will have a resistance of 100 megaohms at 25°C while the resistance of HT glass is around 400 megaohms at 25°C.
•  As the HI11311 is used at elevated temperatures the resistance decreases to approach the that of GP glass.
•  The HI11311 is suitable to use with samples that measure from -5 to 100°C.

  Double Junction Reference
•  A double junction electrode has an internal compartment surrounding the reference wire.
•  Silver ions are present in the electrolyte of the internal compartment, which houses the Ag/AgCl reference wire; the electrolyte outside this compartment is silver free.
•  The double junction design means that virtually no silver from the electrode enters the sample.
•  This design allows measurement in applications where silver ions in the sample are undesirable or silver precipitates on the junction are likely to form.

  Glass Electrode Body
•  The glass electrode body is suitable for a wide range of applications due to its chemical resistance.
•  The glass electrode is compatible with many non-aqueous solvents and other aggressive chemicals.
•  Glass is also resistant to many forms of radiation, such as ultraviolet radiation.

  Built-In Temperature Sensor
•  HI11311 features a built-in thermistor temperature sensor that is in the tip of the indicating pH electrode.
•  A thermistor temperature sensor provides for a high accuracy temperature reading and should be as close as possible to the indicating pH electrode
in order to compensate for the effect that temperature has on the membrane potential.
•  By having an accurate reading it is possible to provide an accurate temperature compensated reading.

     SPECIFICATIONS