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Glass ORP Electrode For HI98190 HI36183

Producer: HANNA Instruments

SKU: HANNA-HI36183 Category: Hanna experimental measuring equipment

Integrated temperature sensor

Electrolytic refillable electrode

Platinum sensor pins

Compatible with HI98190

Platinum sensor pins

The ORP sensor pin is made of platinum. An ORP sensor must be chemically inert so that it does not oxidize itself. It must also have suitable surface characteristics to promote rapid electron exchange. Two noble metals have proven to work well for this purpose: pure platinum and pure gold are both used in the design of ORP sensors. Platinum sensors are often preferred because they are simpler and safer to manufacture. Platinum can be welded to glass and has the same temperature coefficient. The platinum sensor signals pass through the electrode body, along with the reference signal that is conducted for measurement.

Glass body

The glass body is ideal for laboratory use. The glass is resistant to many harsh chemicals and can be easily cleaned. The glass body also allows for rapid heat transfer to the internal reference electrolyte. The mV generated by the reference cell is temperature dependent. The reference potential is stabilized more quickly than equilibrium.

Single ceramic joint

The junction, also known as a salt bridge, is an essential component of the circuit. The movement of ions must flow through the junction for a stable value. The external reference has a single ceramic frit. The ceramic is a porous material that can be easily fused to the glass body and has a similar expansion coefficient. A single ceramic junction has a flow rate of 15-20 µl/hour. Other types of junctions are available with higher flow rates and made of different materials.

Refillable electrolysis

The HI36183 is a refillable probe. Since it is a single junction ORP electrode, the fill solution is the HI7071 3.5M KCl+AgCl. If using a refillable ORP electrode, remove the fill cap prior to measurement. Removing the cap creates head pressure in the reference cell allowing a higher flow rate of electrolyte through the outer junction. A higher flow rate will result in a faster and more stable reading.

SPECIFICATIONS

Body material	Glass
Reference	single, Ag/AgCl
Splice/Line Speed	ceramic, single / 15-20 μL/h
Electrolysis	KCl 3.5M + AgCl
The scale	ORP: ±2000 mV
Maximum pressure	0.1 bar
Electrode tip	Platinum needle tip
Operating temperature	-5 to 70°C (23 to 158°F)
Temperature sensor	Have
Matching Pin	Have
Amplification	Have
Digital	Are not
Compatible machines	HI98190
Cable	5 poles; 1 m (3.3')
Connect	DIN
Guarantee	06 months
Application	Laboratory