RS PRO 1389 User manual

Internal

Instruction Manual

RS-1389

210-7487

BRIX METER

BRIX METER / EN

05/24/18 Version No. 00

CONTENTS

Title Page

1. INFORMATION .......................................................................1

2. FEATURES .............................................................................2

3. SPECIFICATIONS ..................................................................3

4. NAME OF PARTS AND POSITIONS...................................... 4

4-1 Description of Parts & Control keys................................4

4-2 Description of Display.....................................................7

5. OPERATING INSTRUCTIONS

............................................. 8

5-1 Precautions.....................................................................8

5-2 Zero Point Calibration.....................................................8

5-3 Measurement on Sample ...............................................9

5-4 Changing Temperature Unit °C



°F.......................... 10

5-5 Setting Real-Time........................................................ 10

5-6 Data Memory and Read Mode.....................................11

5-7 LCD Backlight Function............................................... 12

5-8 Alarm Function Operation............................................ 12

6. EXPLANATION OF ERROR MESSAGES

........................ 14

7. BATTERY CHECK-UP & REPLACEMENT

...................... 17

8. MAINTENANCE

.................................................................. 17

9. BRIX TO REFRATIVE INDEX (ND) CONVERSION TABLE 18

BRIX METER / EN

02/24/21 Version No. 00 1

Internal

1. INFORMATION



The meter is a portable optical meter that uses the

measurement of refractive index to determine the % Brix of

sugar in aqueous solutions.



The measurement technique and temperature compensation

use methodology recommended by ICUMSA (International

Commission of Uniform Method of Sugar Analysis).



The meter is a waterproof brix meter with a rating of IP65 and

has a memory of 99 data points that can later be read by the

meter.



Prior to working with the meter all operators should read this

manual carefully, which will help you to operate and maintain

the meter, as well as to avoid damage caused by unsuitable

operation and maintenance.

※

Protected by:

Taiwan: D195768

China: ZL 2018 30275110.8

U.S.A.: US D861,523

BRIX METER / EN

2 02/24/21 Version No. 00

Internal

2. FEATURES



Wide measuring range (Brix 0 ~ 53%)



Refractive index measurement (RI)



Temperature measurement (°C/°F)



Ambient temperature compensation (ATC)



Brix or RI high/low limit value alarm function



Zero calibration with distilled or deionized water



Friendly operation and easy to use



Wide and dual display LCD and backlight function



Reliable water resistant (IP65)



Data memory and read function (99 sets)



Auto power off after 2 minutes of non-use

APPLICATIONS



Food industry: Beverages, fruits and sweets



Industry: Monitoring of lubricants in machines and quality

control



Agriculture: Determination of the degree of ripeness of fruit for

quality control in harvesting

BRIX METER / EN

02/24/21 Version No. 00 3

Internal

3. SPECIFICATIONS



Sensor

: Photodiode arrays



Measuring Function

: Brix (%)

Temperature (°C/°F)

Refractive index (RI)



Brix Range

0.0 ~ 53.0%

(10 ~ 40°C/50 ~ 104°F Automatic temperature

compensation)



RI Range

: 1.3329 ~ 1.4265



Temperature Range

: 4 ~ 60°C (39.2~140°F)



Accuracy (Water at 23°C /73.4°F)

: Brix: ±0.2%

Temperature: ±1°C/°F

RI: ±0.0003



Resolution:

Brix: 0.1%

Temperature: 0.1°C/°F

RI: 0.0001



Data memory Capacity

: 99 sets.

(Direct reading from LCD display)



Operation Temperature Range

: 10~40°C (50 ~ 104°F),

Less than 85%RH



Store Temperature Range

: 0~50°C (32 ~ 122°F),

Less than 85%RH



Response Time

: 3 seconds



International Protection Class

: IP65 water resistant



Battery

: AAA batteries x 4



Size

: 148mm x 78mm x 50mm



Weight

Approx.

250g



Accessories

: Instruction manual, Battery, One sample vial,

Two transfer plastic pipettes.

BRIX METER / EN

4 02/24/21 Version No. 00

Internal

4. NAME OF PARTS AND POSITIONS

4-1 Description of Parts & Control keys

UNIT

MEM

SET

ZERO

READ FUNC

TEST

A.I.Alert

1. LCD Display

: Dual display LCD is used for reporting the

measurement Brix (%), Refractive index (RI),

Temperature values and has several other marks

to provide function guidance.

BRIX METER / EN

02/24/21 Version No. 00 5

Internal

◄

MEM

READ

key

◄

key

: In the setting mode, press ◄key to move flicking cursor

to desired position.

MEM

key

: After measurement, press “

MEM

” key to store the

measured Brix (%), Refractive index (RI),

Temperature (°C or °F) values and the memorized

time (RTC) to memory.

READ

key

: Press and hold down the “

SET

” key then press

“

READ

” key to enter the memory data reading

mode.

Press “

READ

” key again to exit this mode.

▲

UNIT A.I.Alert key

▲

key

: In the setting mode, press ▲key to change the desired

parameter or increase the displayed setting value.

In the read mode, press ▲key to increase the

memorized address number.

UNIT key

: Press “

UNIT

” key to change the Brix % to RI unit or

RI to Brix % unit.

A.I.Alert key

: Press and hold down the “

SET

” key then press

“

A.I.Alert

” key to enter or exit Brix % or Refractive

index (RI) the high/low limit value alarm function.

key

: Press

key to turn on or off the meter

5. TEST

▼

ZERO ke

TEST key

: Press “

TEST

” key to perform the single-shot

measurements.

▼

key

: In the setting mode, press ▼key to change the desired

parameter or decrease the displayed setting value.

In the read mode, press ▼key to decrease the

memorized address number.

BRIX METER / EN

6 02/24/21 Version No. 00

Internal

ZERO ke

y: Press and hold down the “

SET

” key then press

“

ZERO

” key to perform the zero-calibration function.

SET key

key

: In the setting mode, press

key to confirm the setting

item or stored the setting values.

SET key

: Press and hold down the “

SET

” key then press

“

READ

” key to enter the memory data reading mode.

Press and hold down the “

SET

” key then press

“

A.I.Alert

” key to enter or exit Brix % and Refractive

index (RI) the high/low limit value alarm function.

Press and hold down the “

SET

” key then press

“

ZERO

” key to perform the zero-calibration function.

Press and hold down the “

SET

” key then press

“

FUNC

” key to enter the setting mode.

7 FUNC key

key

: Press key to turn the LCD backlight function on or

off.

FUNC key

: Press and hold down the “

SET

” key then press

“

FUNC

” key to enter the setting mode.

Press “

FUNC

” key again to exit setting mode.

8. Prism

Sample plate

10. Cover

BRIX METER / EN

02/24/21 Version No. 00 7

Internal

4-2 Description of Display

: Measurement in progress indication.

: Brix % and RI high/low limit value alarm function indication.

: Refractive index reading indication.

: Brix % reading indication.

CAL

: Zero calibration indication.

ATC

: Automatic temperature compensation indication.

: Manual memory address number indication.

: Read mode indication.

: Recall manual memory address number indication.

▲: Alarm high limit indication.

▼: Alarm low limit indication.

°C, °F

: Temperature units.

: Setting mode indication.

: Battery capacity indication.

BRIX METER / EN

8 02/24/21 Version No. 00

Internal

5. OPERATING INSTRUCTIONS

5-1 Precautions



Handle the meter carefully. Do not drop or shake the meter.



The meter is used to measure sugar solutions. Do not

expose the meter or prism to solvents that will damage it.

This includes most organic solvents and extremely hot or

cold solutions.



Never submerge the meter and do not spray water on the

meter except the sample plate located over the prism.



Sample matter may scratch the prism. Absorb sample with a soft

tissue and rinse sample plate and prism with distilled water or

deionized water between samples and wipe dry.



Use plastic pipettes to transfer the solutions. Do not use

metallic tools such as spoons, tweezers or needles as these

will scratch the prism.



If a film develops on the prism will repel test samples and

affect the measured recording. If this occurs, clean with a

mild detergent.

5-2 Zero Point Calibration

Zero-point Calibration should be performed daily, before sample

testing begins, between a long series of measurements or when

you suspect that the reading may be inaccurate.

1. Press

key to turn on the meter.

2. Press “

UNIT

” key to select Brix % reading the “

” symbol is

displayed.

3. Open the sample plate cover. Wipe and clean the prism

surface.

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