Apera Instruments LabSen 551 Bedienungsanleitung

LabSen 551 Spear pH Electrode

User Manual

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

components imported from Switzerland. LabSen551 spear pH electrode adopts spear membrane,

which can easily pierce into solid or semi-solid medium. This probe is suitable for pH measuring of

fruits, vegetable and soil.

This probe has following features:

Solid PVC housing, offers stronger protection.

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

PVC Plastic

Electrode

Dimension

Electrode (Ø15×90) mm

Measuring Tip (Ø6×25) mm

Membrane Shape

Tapered

Reference

Long Life

Connector

BNC

Junction

Ceramic+Single Pore

Cable

Ø3×1m

2 Usage and Maintenance

2.1 Connect BNC plug to the input on the pH meter.

2.2 Pull off the rubber cover. Set them aside (DO NOT pour out the KCl solution). Rinse the

electrode with distilled water. Put the electrode back in the rubber cover after use.

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.

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

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

cover 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 too

hard (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.15,

42329 Wuppertal, Germany

Phone: +49 202 51988998

Website: www.aperainst.de

Email: info@aperainst.de

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