Extech Instruments RF153 Bedienungsanleitung

USER MANUAL

RF153 Brix Meter

User Manual Translations available

at www.extech.com

2 RF153-en-GB_V1.111/18

Table Contents

1. Introduction 3

2. Safety 4

3. Specifications 8

4. Product Descriptions 10

5. Operation 12

6. Maintenance 20

7. Customer Support 22

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1. Introduction

Thank you for selecting the Extech RF153

Brix Meter. We ship this meter fully tested.

With proper use, it will provide years of

reliable service.

1-1 Features

•Wide measurement range (Brix 0~53%)

•Sugar content (Brix%) display

•Refractive Index (RI) measurement

•High resolution (Brix 0.1%)

•Auto Temperature Compensation ATC

•Dual LCD display

•Low power consumption

•IP65 Splash/Dust-proof

•Automatic measurement function

•Memory mode automatically stores up to

10 readings

•Sapphire coating is abrasion and

corrosion-resistant

4 RF153-en-GB_V1.111/18

1-2 Applications

•Sugar, food and beverage production

inspection (fruit juices, soft drinks).

•Measure sugar concentration in cane,

fruits, vegetables, etc.

•Measure sugar content of fruit and plants

to determine maturity (helpful in seed

selection, and fertilization).

•For use in canning factories, breweries,

beverage plants, etc. for quality control

inspections to determine the degree of

sugar (Brix).

•For use in restaurants for sweetness

control.

•Control the concentration of industrial

fluids (cutting coolants, hydraulic fluids,

and antifreeze) to prevent corrosion.

2. Safety

Read the following safety information

carefully before attempting to operate or

service the meter. Only qualified personnel

should perform repairs.

5 RF153-en-GB_V1.111/18

2-1 Safety Symbols

CE Certification.

Restricts the use of six

substances within electrical and electronic

equipment (EEE).

REACH（SVHC）This device does not

use materials or substances identified by

REACH to be potentially harmful or

hazardous.

IP (Int’l Protection Classification)

Conforms to the IP65 waterproof

specification.

You, as the end user, are legally bound (EU

Battery ordinance) to return all used batteries, disposal

in the household garbage is prohibited! You can hand

over your used batteries / accumulators at collection points

in your community or wherever batteries / accumulators are

sold!

Disposal: Follow the valid legal stipulations in respect of

the disposal of the device at the end of its lifecycle.

6 RF153-en-GB_V1.111/18

2-2 Warning

To avoid injury:

•Please read the manual carefully to

ensure safe and correct use of this

device.

•Do not disassemble or modify the meter.

•Do not attempt to repair the meter. Only

qualified personnel may do so.

•This is high precision device, do not

apply excessive force or pressure to the

LCD or prism. Avoid shock and vibration.

•Do not use this meter near magnets or

magnetic fields.

•Do not use the meter near an open flame

or in flammable environments.

•Do not use this meter where the ambient

temperature exceeds the recommended

range of 10°C (50ºF) to 40°C (104ºF) or

in areas where the Relative Humidity

exceeds 80%.

7 RF153-en-GB_V1.111/18

•If the temperature of the liquid that you

wish to measure is extreme, allow it to

settle to a workable temperature before

use.

•Do not use metal tools when sampling.

Metals can damage the prism surface.

•The prisms are coated for protection; do

not use acetone to clean the prism, as

this will harm the coating.

•After use, please follow the user manual

instructions for cleaning the prism. Close

the prism cover when storing.

•If the meter is to be stored for a long

period, remove the battery and close the

prism cover.

•Never use organic solvents for cleaning.

8 RF153-en-GB_V1.111/18

3. Specifications

Model

Extech RF153

Sensor Element

Photodiode Array Detector

Measurements

Brix %

Temperature (oC/oF)

Refractive index (RI)

Ranges

Brix %

Water

4~60oC

(39

～

140oF)

0.0～53.0%

(10~40oC [50~104oF]

Automatic Temperature

Compensation)

Water

4~60oC

(39

～

140oF)

1.3301~1.4374

Temperature

4.0～60.0oC (39.0～140.0oF)

Accuracy

(Water

73.4oF/23oC)

Brix ±0.2%

Temperature ±1oC(oF)

RI ±0.0003

Resolution

Brix: 0.1%

Temperature: 0.1oC(oF)

RI: 0.0001

Operating

conditions

10～40oC (50～104oF)

< 80% RH

9 RF153-en-GB_V1.111/18

Storage

conditions

0～50oC (32～122oF)

< 80% RH

Response time

3 seconds

IP rating

IP65 splash/dust-proof

Data Hold

Freezes displayed reading

Low battery

indication

Four levels

Data storage

10 storage locations

Zero Function

Zeros the display

Auto Power Off

2 minutes (approximately)

Power supply

2 x ‘AAA’ batteries

Dimensions

113 x 60 x 38 mm

(4.4 x 2.4 x 1.5”)

Weight

120g (4.23 oz.) without battery

Accessories

Wrist strap, pouch, 2xAAA

batteries, and user manual

10 RF153-en-GB_V1.111/18

4. Product Descriptions

4-1 Meter Description

1. Prism Cover

2. Prism

3. Measure (short press) / Zero (long

press) / Scroll up button (short presses

in Memory mode only)

4. Power ON/OFF (long press) / RCL

(short press to select Memory mode)

5. Unit button (short press for RI/BRIX;

long press for temperature units)

6. LCD display

7. Battery cover

8. Battery compartment secure screw

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