7 gas-sensitive electrode, 1 installation of the electrode and electrolyte, 1 fill the electrode with electrolyte – Hach-Lange AMTAX indoor sc User Manual
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Installation
3.7 Gas-sensitive electrode
Important Note: Before using the AMTAX sc for the first time, the
electrode has to be filled with the supplied electrolyte, see
The ammonium in the sample is converted into (dissolved)
ammonia gas by adding sodium hydroxide solution. This dissolved
ammonia gas content will be converted into a measurable pH shift
in the electrode.
3.7.1 Installation of the electrode and electrolyte
The electrode body and the glass electrode are sold as a unit
(Refer to
). Use the electrode only in the
supplied enclosure. To prevent inaccurate readings or instrument
malfunction, do not use a different enclosure than that supplied by
the manufacturer.
3.7.1.1 Fill the electrode with electrolyte
CAUTION
Review all SDS/MSDS information and use recommended
safety measures to prevent exposure to potential chemical
hazards.
Important Note: Never lubricate the membrane cap or the
electrode with grease, silicone oil or Vaseline. This will cause
damage to the Teflon membrane which will cause poor
performance.
Pre-requisites:
•
The items required to fill the electrode are located in the bag
attached to the base of the enclosure.
•
Before the electrolyte can be added to the electrode, open the
instrument enclosure and disconnect the electrode cable from
the analyzer panel.