Apera Instruments LabSen 753 Manuel utilisateur

LabSen® 753 Spear pH/Temp. Electrode

User Manual

LabSen® pH electrodes are made with proprietary sensor technologies and key components from

Switzerland. LabSen® 753 spear pH electrode adopts a spear glass membrane, which can easily pierce

into solid or semi-solid medium. This probe is designed for pH measurement of food samples such as

cheeses, meats, sushi rice, dough, and fruits.

Features(

• LabSen® S-type spear sensor tip featured with high firmness and fast response, designed for

direct measurement of solid/semi-solid samples

• Built-in temperature sensor for automatic temperature compensation (ATC)

• Food-grade titanium sheath, providing strong protection to the sensor

• Open& Ceramic double-junction with Polymer electrolyte. No more junction clogs.

• Long life reference system improves the stability of the reference system and extends the

electrode’s service life.

• Blue gel inner solution - does not flow and will not generate air bubbles.

Technical(Specifications(

Measuring Range

0 – 14 pH

Tem pe r at u re Ra n ge

0 – 80 °C

Body Material

Food-Grade Titanium

Tem pe r at u re se n so r

NTC 30KΩ

Reference

Long Life

Junction

Ceramic + Open

Reference Solution

Polymer

Soaking Solution

3M KCL

Electrode Dimension

Electrode (Φ12×115) mm

Measuring Tip (Φ6×50) mm

Connector

BNC/RCA

Cable

Φ3×1m

How(to(use(

1. Insert the blue BNC connector of the electrode to the BNC socket of your pH meter

while twisting clockwise until it’s locked.

2. Insert the black RCA connector of the electrode to the RCA socket directly.

3. Before measuring, twist off the storage bottle cap (see graph on the right), pull

out the electrode and rinse it off with distilled or deionized water.

4. Perform at least a two-point calibration before measuring after connecting the

new electrode to your pH meter.

5. Spear pH Electrode is suitable for measuring wet solids or semi-solid

mediums. Be careful not to use excessive force when piercing the electrode

into samples. If the sample medium is too hard, please cut a small hole with a knife before piercing

the electrode into it.

6. After using, put the electrode back into the storage bottle and twist on the bottle cap.

Maintenance(

1. When not in use, the electrode should be soaked in the storage bottle containing 3M KCL soaking

solution to keep the glass membrane and junction in a healthy condition. Clean the bottle and replace

the soaking solution if it gets contaminated. The electrode should never be stored in pure water such

as deionized or distilled water.

2. The electrode is only as accurate as it is clean. Always thoroughly rinse off the probe before and after

each measurement with pure water in a container or with a wash bottle.

3. The transparent polymer gel electrolyte will inflate and ooze out a bit when it’s soaked in KCL solution.

This will not affect the measurement of the electrode, and it will happen more frequently with newer

electrodes. This is a “self-clean” situation especially when the junction gets contaminated. Just wipe

off the inflated gel with clean tissue and continue to use the electrode as normal.

4. For tough contaminants, soak the electrode in Apera cleaning solution (AI1166) for 30 minutes. Then

use a soft brush to remove the contaminants. Afterwards, soak the electrode in 3M KCL soaking

solution for at least 1 hour. Rinse it off, then re-calibrate it before using again.

5. The connector of the electrode should be kept clean and dry. If contaminated, please clean it with

medical cotton and isopropyl alcohol and blow-dry it to prevent short circuit of the electrode or slow

response of the electrode.

6. The electrode should avoid testing strong acid and strong alkali solutions, as well as dehydrating

media such as absolute ethanol and concentrated sulfuric acid. If testing such solutions, the

immersion time should be minimized and the electrode should be carefully cleaned after use.

7. Every pH electrode will eventually age and fail. The typical service life of Apera pH electrodes is 12-

24 months depending on the frequency of usage and how well you keep it clean and properly stored.

We recommend replacing your electrode every 12-18 months to ensure the best accuracy.

Warranty(

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

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

attributable to responsibility of APERA INSTRUMENTS, LLC for a period of SIX MONTHS from the

delivery.

This limited warranty does NOT cover any damages due to:

Accidental damage, transportation, storage, improper use, failure to follow the product instructions or to

perform any preventive maintenance, unauthorized repair or modifications, normal wear and tear, or other

external causes or actions beyond our reasonable control.

To get the fastest warranty fulfillment, go to support.aperainst.com and click “New Support Ticket” on

the upper right corner. Type your email in the requester field, “Warranty” in the Subject field, and then

input the following information in the description field:

• Your full name

• Product model that needs warranty fulfillment

• Serial number of the product (can be found on the back sticker of the tester body)

• What problem or issue you had experienced with the product

• Attach a photo of your proof of purchase

• Attach a photo of the problematic product

Then click Submit. One of our customer care specialists will help you fulfill the warranty within one

business day.

APERA INSTRUMENTS, LLC

Address: 6656 Busch Blvd, Columbus, OH 43229 Phone: 1-614-285-3080

Website: aperainst.com Email: [email protected]

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