Immersion Reference Electrode Model IR

data The Immersion Reference Electrode, Model IR, is designed for long term installation in an aqueous environment. Typical applications include elevated water tanks, standpipes, ground storage tanks, clarifiers, traveling screens, trash racks, submerged pipelines, locks, dams, and dock structures. The electrode can be directly suspended by its lead wire, cemented directly to 3/4 inch PVC conduit using the optional socket end termination, or securely attached to a steel structure with the optional magnetic mount. Antifreeze protection is also available for those situations where the electrode may be exposed to temperatures down to -30°F (-34°C). However, antifreeze may shift the reference potential by up to 12 mV.

The Model IR has a twenty year design life and uses #12 AWG RHW/USE lead wire. This electrode can also be fitted with a concentric cathodic protection coupon which minimizes voltage drop error in potential measurements (Model IRC). Another option is a copper sleeve which will reduce biofouling when the electrode is exposed for extended times in natural seawater (Model IRF). Potable water applications requiring NSF61 certification should use Model IRW.

Model IR can be used in all aqueous environments. For clean full strength seawater applications, our Model IP-AGD Immersion Reference may be a more economical alternative.

The design life of a reference electrode is an estimate of the time based on test results it would take for enough salt to diffuse out from the inner core to lower the salt concentration to below saturation. At EDI, we use several techniques to extend this time as much as possible. One of these techniques is to increase the amount of salt reserve contained in the gel. This is one reason why longer life electrodes have physically bigger housings. Download our paper Factors Affecting the Accuracy of Reference Electrodes to learn more.


Complete Product Information is available for downloading as pdf files. Click on the link below to download.
Immersion Reference Electrode (Model IR ) data sheet.