Hydromet pH probe - Combined electrode ERH-AQ1

Probe for continuous measurement of pH in the aquarium

The ERH-AQ1 combined electrode is designed for periodic or continuous pH measurements in aqueous solutions, especially in freshwater or marine aquariums.

The electrode has a glass body with a pH-sensitive spherical membrane at the end. A chemically resistant ceramic diaphragm (electrolytic connector) is embedded in the body wall. Free access to the membrane and connector facilitates cleaning of the electrode. The electrode uses a replaceable reference solution with an added viscosity-increasing agent, which limits the rate of its leakage and dilution due to continuous contact with aquarium water.

The possibility of replenishing or replacing the reference solution significantly extends the life of the electrode. In the standard version, the ERH-AQ1 electrode is equipped with a protective cap that protects the ion-sensitive membrane from mechanical damage. In order to suppress interference caused by the presence of electric charges, a low-noise shielded cable with an additional semiconductive coating is used in the electrode.

The cable length is 2 meters, which makes it easy to mount the electrode in larger aquariums. The standard equipment includes a humidification bottle, ensuring optimal storage conditions for the electrode and immediate readiness for operation.

Technical data:

Measuring range: 0...14 pH
Temperature range: 0...70ºC
Membrane resistance (at 20ºC): 100...200 MΩ
Electrolytic switch resistance: 0.4...1 kΩ
Zero point: 7.0 ± 0.5 pH (0 ± 30 mV)
Reference half-cell (silver chloride): Ag/AgCl
Reference solution (SE03): 3.0 M KCl + AgCl
Body diameter: 12.0 ± 0.5 mm
Body length (without frame): 120 ± 5 mm
Minimum immersion depth: 30 mm
Maximum immersion depth: 100 mm
Membrane shape: spherical
Body material: glass
Electrolytic Connector: Ceramic
Frame material: polypropylene
Sealing sleeve material: silicone rubber
Cable length: approx. 2 m
Plug: BNC

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