PW-2050 Digital Dry Matter Weigher Martin Lishman

PW-2050 Digital Dry Matter Weigher Martin Lishman
INTRODUCTION
PW-2050
Digital Dry Matter Weigher
Instruction Manual
The PW-2050 weighs potatoes to measure their specific gravity and percentage dry
matter. It works by comparing the weight in air with the weight in water of 1.5kgs of
potatoes and converts this to specific gravity and dry matter. The PW-2050 is battery
operated and will weigh for up to 15 hours between re-charging and will retain all
weights even when the batteries are flat or taken out.
All information is stored until the CLEAR sequence has been completed.
Standard versions (POT/HYDROMETERDIG and POT/HYDROMETERDIGUSB)
The maximum weight the unit can weigh is 5kg (11 lbs).
NOTE: If the weight exceeds 5kgs the loadcell will be damaged.
French Fry versions (POT/HYDROMETERDIGFRENCH and POT/HYDROMETERDIGU10)
The maximum weight the unit can weigh is 10kg (20lbs).
NOTE: If the weight exceeds 10kgs the loadcell will be damaged.
COMPONENTS
Hard carry case
PW-2050 Digital Hydrometer
AC Mains Adapter
Overseas Adapters
Instruction manual
Basket & Chain
(Optional extra)
USB stick
In-Car Adapter
(Only available with the
POT/HYDROMETERDIGUSB and
POT/HYDROMETERDIGU10)
Martin Lishman
PW-2050 Control Panel
Tel: +44 (0) 1778 426600
www.martinlishman.com
Product Codes:
POT/HYDROMETERDIG
POT/HYDROMETERDIGUSB
POT/HYDROMETERDIGFRENCH
POT/HYDROMETERDIGU10
POT/HYDROMETERBASK&CHAIN
Charger and USB
sockets are on the side.
KEY PAD
SAFETY CONSIDERATIONS
The PW-2050 is a rugged unit but it is a loadcell-based weighing device and should be
handled with care. The unit can be cleaned with a damp cloth but under no circumstances
be immersed in water. It is not waterproof. This unit is fitted with rechargeable batteries
and will last for 3-4 years if charged/discharged correctly.
WEIGHT CONSIDERATIONS
Standard versions (POT/HYDROMETERDIG and POT/HYDROMETERDIGUSB)
A weight of 1.5kg to 3kg of potatoes must be used.
The standard versions are fitted with a 5kg loadcell and under no circumstances should the
weight of the potatoes and basket exceed this otherwise the loadcell will be damaged and
will not be covered by Warranty.
French Fry versions (POT/HYDROMETERDIGFRENCH and POT/HYDROMETERDIGU10)
A weight of 1.5kg to 6kg of potatoes must be used.
The French Fry versions are fitted with a 10kg loadcell and under no circumstances should
the weight of the potatoes and basket exceed this otherwise the loadcell will be damaged
and will not be covered by Warranty.
TAKING A READING
ON
OFF
Turns unit
ON and OFF
CLEAR
Clears data stored
STEP 1 - SELECTING THE BASKET AND CONTAINER
1.1
TARE
Tares weight on
the hook
WEIGHT
IN AIR
Stores the weight in
air measurement
SHOW
DATA
Displays data
stored
PRINT
DATA
inc
dec
Prints data
stored
Increase settings
Decrease settings
SET
UP
WEIGHT
IN
WATER
PRINT
OPTIONS
Settings
Stores the weight in
water measurement
Set type of printout
A wire basket or plastic mesh bag large enough to hold at least 1.5kg of washed
potatoes will be required. The size and weight of the receptacle is not important, but it
must be possible for it to be lowered into a container of water so that the potatoes in it
are fully immersed.
1.2 It will be easier to use the weigher if it is suspended from a fixed
point and the basket is lowered into the water container. It is
extremely important that the weigher itself is NOT lowered into
the water or allowed to become wet in any way. Serious and
possibly irreparable damage will occur to the weigher if water
is allowed to get inside the working mechanism and
electronics.
If you have purchased the Basket and Chain, please use the chain
when operating the Digital Hydrometer to prevent the weigher
contacting the water.
ENTER
CAL
Steps through menus
STEP 2 - SETTING THE TIME AND DATE
2.1
Turn the weigher on by pressing the ON/OFF button. The display will show READY.
Press SET UP and the display will show:
HOUR
00:00 (MINUTE
DAY MONTH
YEAR)
2.2
To set the time and date, press the
or
buttons until the correct hour is
displayed, then press ENTER.
The same procedure is repeated for minute, day, month and year.
Basket calibration
2.3
After the date settings the display will show the DRY BASKET calibration value and
then the WET BASKET value. After this the display will show the TUBER TEMP and
then the WATER TEMP. Just continue to press ENTER until READY is displayed.
2.4 If you are not going to use the tuber and water temperatures then these must be left at
10°C to give a zero correction.
2.5 All these values can be changed using the
stepped through using the ENTER key.
and
keys and the menus are
STEP 3 - CALIBRATING THE BASKET
4.4 If using the Basket & Chain, allow the basket to hang freely and submerge into the
water.
Press the WEIGHT IN WATER button.
The display will then show ACCEPTED. When the basket has been removed it will be
stored automatically.
4.5 To check for variability within loads, repeat the measurement with different potatoes
from the same lot and average the results.
STEP 5 - SHOW DATA
5.1 Press the SHOW DATA key and the display will show STORE with the time and date.
3.1 With nothing on the hook check that the display reads zero, and if it does not then
press the TARE key.
3.2 If you have purchased the Basket and Chain, attach the chain
to the basket and the Hydrometer using the hooks at either end
(see photo).
Place the empty basket onto the hook and press the CAL key,
CALIBRATING BASKET will be displayed and then BASKET.
5.2 Press ENTER and the display will show DRY MATTER and SPEC GRAVITY.
5.3 Press ENTER again and the display will show DRY WEIGHT and WET WEIGHT.
5.4 Press ENTER again and the display will show DRY BASKET and WET BASKET.
5.5 Press ENTER again and the display will show TUBER TEMP and WATER TEMP.
(The standard setting 10°C for both gives zero correction.
5.6
Press ENTER and the display will show the next stored weight.
Each weighing is stored in the memory and up to 5000 individual weights can be
stored.
3.3 If using the Basket & Chain, lift the hook on the basket on to the Digital Hydrometer
hook before pressing the WEIGHT IN AIR button.
Press the WEIGHT IN AIR button, when the weight has been accepted the display will
show DRY WEIGHT and the red triangle light will come on.
3.4
If using the Basket & Chain, allow the basket to hang freely and
submerge into the water (see photo).
Place the empty basket into the water and press WEIGHT IN
WATER, when the weight has been accepted the display will
show SAVING NEW SETTINGS, the display will then show
READY.
STEP 4 - WEIGHING THE DRY MATTER OF THE POTATOES
4.1
With the standard versions (POT/HYDROMETERDIG and POT/HYDROMETERDIGUSB)
a weight of 1.5kg to 3kg of potatoes must be used. The maximum weight must not
exceed 5kg.
If you have purchased the French Fry version (POT/HYDROMETERDIGFRENCH or
POT/HYDROMETERDIGU10) a weight of 1.5kg to 6kg of potatoes must be used. The
maximum weight must not exceed 10kg.
The potatoes must be washed before being weighed.
4.2 Turn the weigher ON with the chain and basket already on the hook.
4.3
Place the potatoes into the basket and press the WEIGHT IN AIR button. The display
will then show that the weight has been accepted.
CLEARING FOR NEW DATA
1.
To clear the memory, press the CLEAR button. The display will show: CLEAR
MEMORY (ENTER)=YES.
2.
Press ENTER and the display will show: ARE YOU SURE? (SET UP)=YES.
3.
Press SET UP and the display will show: CLEARING MEMORY FOR NEW DATA.
USING THE USB SOCKET (POT/HYDROMETERDIGUSB &POT/HYDROMETERDIGU10)
1.
Select the PRINT OPTIONS.
2.
Select WRITE TO USB using the
3.
Press the PRINT DATA key and the display will show WRITING TO USB.
4.
When the weigher has finished the display will flash up FILE WRITTEN OK and the
display will go back to the standard weighing display.
5.
The USB stick can now be removed and used on a computer.
6.
On your PC, go to MY COMPUTER and open USB DISK FILES.
7.
Now select all the files and right click, a small dropdown menu should appear with the
option OPEN WITH… now select CHOOSE DEFAULT PROGRAM and select
MICROSOFT EXCEL.
or
key and insert the USB stick.
TIMER SETTINGS - how to change the timer setting to prevent PW2050 turning off
OR
1.
Open MICROSOFT EXCEL. Select FILE in the top left corner and then click OPEN. It will
now open a small window, click on MY COMPUTER and select the USB DISK icon. Select
all the files you want to see and then click open. (You select multiple files by holding down
CTRL and clicking each file).
2.
If there is no USB stick in the weigher when you try to write to the USB the display will
show WRITING TO USB followed by NO STICK FOUND. If the USB stick is faulty or
removed before the file is written the display will show WRITING TO USB followed by
ERROR WRITING.
1.
2.
3.
4.
5.
6.
7.
8.
Clear the memory (see CLEARING FOR NEW DATA).
Turn the unit OFF.
Hold down the SET UP button and turn the weigher ON.
Set up will be displayed, take finger off the SET UP button.
By pressing the ENTER button you can step through the various options.
You will come to a TURN OFF option which is set to 15 minutes.
By pressing the
arrow you can set the time up to 60 minutes.
When set press the ENTER key and then SETUP. The display will say SAVE SETTING.
TECHNICAL ASSISTANCE
CHARGING
The charging socket is situated on the side of the weigher. In the centre of the display is the
battery charge indicator. When full the box will go completely black and as power is used
the box will start to go clear. This is only a rough guide based on the battery voltage and
does not show how much capacity is in the batteries.
Flash when
charging
Battery Full
Battery 50%
Battery Empty
Battery
indicator will
flash when
being charged
If the battery should go flat while weighing a LOW BATTERY warning will flash in the
display and the weigher will eventually turn off. Data already stored in the weigher will
remain in memory even if the unit automatically turns off.
To recharge the batteries fully, leave on charge over night.
To check the battery voltage or charging voltage
Hold the SET UP button down and turn ON.
The display will show WELTECH SET UP then MODEM RATE, press CLEAR and then the
key.
If the
or
key is pushed the display will show the date, time and battery charge. By
pushing the
key while the weigher is on mains charge the display will show the charging
rate from the charger.
If you experience any difficulty in operating the Weltech PW-2050 Potato Dry Matter
Weigher, please contact Martin Lishman Ltd.
Tel: + (0)1778 426600; Fax: + 44 (0)1778 426555;
e-mail: sales@martinlishman.com
WARRANTY
The Weltech Potato Dry Matter Weigher (the unit) is guaranteed for 12 months from the
date of purchase against any defect or malfunction caused by faulty parts or workmanship.
To claim under warranty, the complete unit or part should be returned, at the claimant’s
expense, to Martin Lishman Ltd with a written explanation of the problem. Should there
prove to be a defect or malfunction caused by faulty parts or workmanship, it will be
repaired or replaced and returned to the claimant without charge. If a warranty claim is
rejected, the cost of replacement or repair will be notified to the claimant before any work is
carried out.
Any warranty claim will automatically be invalidated if the unit has been modified or
internally tampered with in any way. The manufacturers will not cover under warranty
damage or faults occurring to the unit which have been caused by inappropriate use or by
use not in accordance with the operating instructions. Under no circumstances will Martin
Lishman Ltd re-imburse any costs associated with a warranty claim if these costs have
been incurred without agreement in advance.
Under the terms of warranty for the unit under no circumstances will liability exceed the cost
of replacement or repair. The manufacturers and Martin Lishman Ltd will not be liable for
any consequential or indirect loss suffered by purchasers or users of the unit, whether this
loss arises from correct or incorrect use, defect or malfunction caused by faulty parts or
workmanship or in any other way. Non-exhaustive illustrations of consequential or indirect
loss are loss of profits, loss of contracts and damage to property.
Manufactured in the UK by Weltech International Ltd and distributed exclusively by Martin
Lishman Ltd.
Terms and Conditions of Sale can be provided on request or downloaded from our website
www.martinlishman.com
© Martin Lishman Ltd February 2014
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