Apera LabSen 252 Manuel utilisateur

LabSen 252 Glass Spear pH Electrode

User Manual

LabSen electrochemical sensors are premium pH electrode with manufacturing technology and key

components imported from Switzerland. LabSen252 adopts spear type glass membrane, which can

easily pierce solid or semi-solid medium. This electrode is suitable for cheese, meat, fruit and

vegetable testing.

This probe has following features:

⚫ Impact-resist membrane, there is no danger of electrode breakage during normal use.

⚫ Blue gel inner solution, does not flow and will not cause bubble.

⚫ Maintenance-free polymer electrolyte, non-diaphragm structure.

⚫ Long life reference system, has better stability and service life.

1 Technical Data

Measuring Range

(0 ~ 14) pH

Electrolyte

Polymer

Temperature Range

(0 ~ 80) °C

Soaking Solution

3M KCl

Shaft Material

Lead-free Glass

Electrode

Dimension

Electrode (Ø12×100) mm

Measuring Tip (Ø6×35) mm

Membrane Shape

Tapered

Reference

Long Life

Connector

Junction

Ceramic+Single Pore

Cable

S7-BNC / Ø3×1m

2 Usage and Maintenance

2.1 Connect electrode to S7-BNC cable, and then connect BNC plug to the input on the pH meter.

2.2 When measuring, please unscrew the bottle cap, pull out the electrode and rinse it with

deionized water. After using, please put the electrode back into the bottle and screw tight the

cap.

2.3 After long time exposure in air, Polymer electrolyte will cause shrinkage. It will not happen in

measurement status. The electrode must be soaked in 3M KCl solution for storage. After long

time soaking, there will be some floccules dissolving out from 3M KCl solution, this is normal

phenomenon.

Before pulling out or putting back the electrode,

make sure to fully loosen the blue cap on the

storage sleeve so that the electrode can move in

and out smoothly.

2.4 The electrode’s measuring tip should be soaked in the soaking bottle containing certain amount

of storage solution to keep the membrane hydrated and junction unblocked. Clean the bottle

and replace the storage solution if the storage solution gets turbid and mildewed. The electrode

should never be sinked in pure water or buffer solution for long.

2.5 The connector of the electrode should keep clean and dry. If being contaminated, please clean

it with medical cotton and absolute alcohol and blow dry to prevent the short circuit of the

electrode and slow reaction of electrode.

2.6 Spear pH Electrode is suitable for measure wet solid or semi-solid medium. Please forcibly

even when piercing, to prevent damage of the electrode. In case the sample medium is strong

(such as meat and fruit); please cut a small hole before piercing the electrode into it.

2.7 After 1-year of use, we recommend replacing the electrode to ensure the best accuracy.

3 Warranty

We warrant this electrode free from defects in material and workmanship and agrees to repair or

replace free of charge, at option of APERA INSTRUMENTS any malfunctioned or damaged product

attributable to responsibility of APERA INSTRUMENTS for a period of six months. Warranty period

is the time limit to provide free service for the products purchased by customers, not the service life

of the tester or electrodes.

This limited warranty does not cover any damages due to:

transportation; storage; improper use; failure to follow the product instructions or to perform any

preventive maintenance; modifications; combination or use with any products, materials, processes,

systems or other matter not provided or authorized in writing by us; unauthorized repair; normal wear

and tear; or external causes such as accidents, abuse, or other actions or events beyond our

reasonable control.

APERA INSTRUMENTS (Europe) GmbH

Address: Wilhelm-Muthmann-Str.18,

42329 Wuppertal, Germany

Phone: +49 202 51988998

Website: www.aperainst.de

Email: info@aperainst.de

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