Lutron Electronics FR-5120 Operation Manual
20 Kg x 0.01 Kg ( 10 g )
Precision Fruit Sclerometer
FRUIT HARDNESS TESTER
Model : FR-5120
Your purchase of this
FRUIT HARDNESS
T
ESTER marks a step
forward for you into the
field of precision
measurement. Although
this METER is a complex
and delicate instrument,
its durable structure will
allow many years of use
if proper operating
techniques are
developed. Please read
the following
instructions carefully
and always keep this
manual within easy
reach.
OPERATION MANUAL
TABLE OF CONTENTS
1 FEATURES...................................................................1
2 SPECIFICATIONS.........................................................2
3 FRONT PANEL DESCRIPTIONS ....................................
.
4
3-1 Universal Sensing Head........................................ 4
3-2 LCD Display......................................................... 4
3-3 Fast Indicator...................................................... 4
3-4 FAST/SLOW Button................................................. 4
3-5 LCD Reverse Display Button.................................... 4
3-6 Zero Button............................................................. 4
3-7 Kg/LB/Newton Unit.................................................. 4
3-8 Power Off/On/Peak Hold......................................... 4
3-9 Mounting Holes/fixing Screws................................ 4
3-10 Battery Cover/Compartment.................................. 4
3-11 11 mm Penetrometer Tip, FRTP-11.........................
.
4
3-12 8 mm Penetrometer Tip, FRTP-8............................. 4
3-13 5 mm Penetrometer Tip, FRTP-5.............................. 4
3-14 3 mm Penetrometer Tip, FRTP-3.............................. 4
3-15 LCD Back Light Button.............................................4
3-16 DC 9V Power Adapter Input Socket..........................
.
4
3-17 RS-232 output terminal......................................... 4
4 MEASURING PROCEDURE ...........................................
.
5
4-1 Pay attentions for the measurement......................
.
5
4-2 Normal Measurement ...........................................6
4-3 Peak Hold Measurement ......................................
.
7
4-4 LCD Back light On/Off............................................7
5 BATTERY REPLACEMENT ............................................
.
8
6 RS232 PC SERIAL INTERFACE......................................8
7 MOUNTING HOLES & OPTIONAL TEST STAND..............
.
10
1. FEATURES
* The tester is used to measure the hardness of most kind
fruits such as apple, pear, strawberry, grape, large/hard
fruits, small/soft fruits. It is suitable for the fruit
scientific research department, fruit company, fruit farm,
agriculture colleges and universities to improve the fruit
quality, the harvest storage, the product transportation...
by the fruits' hardness. The useful tester to judge fruit's
mature degree.
* Max. capacity : 20 Kgf x 0.01 Kgf ( 10 gf ).
*Unit : Kg/LB/Newton.
* Use load cell sensor, high precision.
* Digital display with Peak hold function, easy
measurement.
* Tension or Compression, Zero.
* Positive/ Reverse display.
* Large LCD display with back light.
* Tip size : 3 mm, 5 mm, 8 mm, 11 mm.
* RS-232/USB computer interface.
* Complete set with hard carrying case and 4 kind tips
( 3 mm, 5 mm, 8 mm, 11 mm ).
* Test stand, FS-1001, optional.
* USB cable ( USB-01) and the data acquisition are optional.
* Peak hold ( Max. load ) can be held in display during
make the measurement.
* Zero button can operate both for normal measuring
& the " peak hold " operation.
* Full capacity zero (tare) control capability.
* Fast/Slow response time push button.
* Hand held & stand mounted gauges are available.
* Low power consumption gives long battery life.
* Microprocessor circuit & exclusive load cell transducer.
* Over load protection.
* Built-in DC 9V power adapter input socket.
1
2. SPECIFICATIONS
Principal The hardness of Fruit can express by the
unit area ( S ) could undertake the
pressure of dynamometer ( N) , their
specific value is just as the hardness ( P ).
P = N / S
P = Hardness value of fruit ( Kg/cm^2 )
N = Pressure of dynamometer ( N, Kg, LB )
S = Area of pressure ( m^2, cm^2 )
Display LCD ( Liquid crystal display ).
5 digits, 16 mm ( 0.63" ) digit size.
Back light.
Display Positive or Reverse direction, select by
Direction the push button on the front panel.
Function Tension & Compression (Push & Pull).
Normal force, Peak hold ( Max. load ).
Peak hold Will freeze the display value of the
Peak load ( Max. load ).
Zero Zero button can be operated both for
"normal force" or "peak hold" operation
Unit select Kg/Newton/LB.
Measure 20.00 Kg/44.10 LB/196.10 Newton.
Capacity
Resolution 0.01 Kg/0.01 LB/0.05Newton.
Min. Display 0.02 Kg/0.07 LB/0.3 Newton,
Accuracy ± (0.5 % + 2 digits), within 23± 5 .℃
* Under the test weight on 10 Kg & 20 Kg.
Update time Fast Approx. 0.2 second.
Slow Approx. 0.6 second.
Over range Display show " - - - - " when in over
Indicator range status.
Data output RS-232 serial computer interface.
2
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