Extech Instruments RF153 User Manual

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USER MANUAL
RF153 Brix Meter
User Manual Translations available
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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
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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.
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2-1 Safety Symbols
CE Certification.
Restricts the use of six substances within electrical and electronic equipment (EEE).
REACHSVHC 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.
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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 thi s 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%.
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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.
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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)
0.053.0% (10~40oC [50~104oF]
Automatic Temperature Compensation)
RI
Water 4~60oC (39~140oF)
1.3301~1.4374 Temperature
4.060.0oC (39.0140.0oF)
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
1040oC (50104oF) < 80% RH
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Storage conditions
050oC (32122oF) < 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
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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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4-2 LCD Description
1. Temperature reading
2. Measurement mode
3. Zero function
4. Brix% or RI reading
5. Temperature units
6. Battery status
7. Refractive index mode
8. Brix% mode
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5. Operation
5-1 Main Functions
Power ONOFF
Long press to turn the meter on. All display symbols will appear for 2 seconds. After power-on, the meter will show the
ambient temperature along with dashes in the main reading area. Long press to
turn the meter off.
Long press
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Select Measurement Units
Short press UNIT to select Brix unit (%) or RI (refractive index). Long press UNIT to select the temperature units (oC/oF).
Adding a sample to the prism
1. Use a dust-free cloth to wipe (gently) the prism surface.
2. Use a non-metallic spoon or dropper to place the sample on the prism (0.3 ml, approximately), to begin measuring. As shown below.
Replacing a sample
1. Incline 45 degrees to allow the measured sample to spill out along the
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grooves. As shown below.
2. Use water to flush the prism surface.
3. Use a dust-free cloth to wipe the prism surface.
Auto Measurements
After placing the measurement liquid on the prism, close the prism cover to start measuring. The measurement result will display on the LCD and save to memory automatically (see Section 5-2). If ERR is shown, an error has occurred, refer to Section 5-3-2.
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Manual Measurements
After placing the measurement liquid, press M to start measuring. The measurement result will display on the LCD and save to memory automatically (see Section 5-2). If ERR is displayed, an error has occurred, please refer to Section 5-3-2. Press M
Zero Calibration
Placed distilled or tap water on the prism, long press M to access the zero function.
Long press M
Perform a zero calibration before each use.
Temperature of distilled/tap water should equal ambient temperature.
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5-2 Memory/Measurement modes
Mode selection
Short press RCL to switch between the Measurement mode and the Memory mode.
Memory Mode
When you access the Memory datalogger mode, “dat #” flashes before showing the stored readings.
Short press RCL Use the button to scroll through the
stored readings.
Measurement Mode
When you select the Measurement mode, dashes will display on the LCD screen.
Short press RCL
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View Stored Readings
In Memory mode, short press to step through up to 10 logged readings in sequence.
Press
If a memory location is empty, the LCD will display dashes for Temperature and Brix.
Clear Stored Readings
To clear all stored readings: In Memory mode, long press M until CLr DATA flashes once and then returns to dat 1”.
Long press M
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5-3 LCD icons and alerts
5-3-1 Hi/Lo Alerts
The Hi or Lo Alert will appear under these conditions:
When ambient or sample temperature is >40oC (104oF) or <10oC (50oF). The temperature units will also flash. The Brix reading will still display but the accuracy will not be optimum; use for reference only.
When the Brix or RI reading is out of range. (Brix >53% or <0%)
Note: When the Brix of the sample reads low, perform a zero calibration (see Section 5-1).
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5-3-2 Error Messages
Error 1: Prism Cover Error
During a measurement, the prism cover was opened/closed, or the ambient light was too strong. Close cover and try again.
Error 2: No Water Error
There is no water or there is an insufficient amount of sample on the prism surface to perform a measurement.
Error 3: Temperature Over Range
When the sample temperature (measured on the prism surface) is out of range, the accuracy will not be optimum (< 4oC [39.2oF] or > 60oC [140oF]).
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Note that measurement data is not automatically stored when an error message is showing. Contact Extech if an error is persistent and does not clear.
6. Maintenance
Cleaning the prism
Clean the prism surface immediately after each measurement.
1. Use a cotton swab dipped in quality alcohol (over 99%) and wipe in concentric circles; avoid using acetone.
2. Use a dust-free cloth to wipe the surface after using the alcohol.
3. Store in a dry and shaded area.
Cleaning the housing
Clean with soap and water using a damp sponge or soft cloth.
Maintenance Notes
Do not use organic solvents to clean the meter. Remove the batteries when storing the meter. Close the prism cover when not in use.
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Battery Replacement
Two ‘AAA’ batteries power the meter. When the symbol flashes, replace the
batteries.
1. Turn the meter off
2. Open the rear battery cover as shown in the diagrams below
3. Replace the batteries observing correct polarity
4. Close the battery cover
5. Fasten the compartment before use
Step One Step Two
CAUTION: Close the cover tightly in order to
prevent liquid ingress
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Customer Support
Customer Support Telephone: U.S. (866) 477-3687 International +1 (603) 324-7800
Calibration, Repair, and Returns email:
repair@extech.com
Technical Support:
https://support.flir.com
Copyright © 2018 FLIR Systems, Inc.
All rights reserved including the right of reproduction in whole or in part
in any form
www.extech.com
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