RADWAG WPT EX Series User manual

User manual
of PUE C/31H/EX indicator
applicable in:
WPT……../EX,
WTC……./EX.
Manual number:
EXI-01-04-06-14-GB
BALANCES AND SCALES
RADWAG 26 – 600 Radom, Bracka 28, POLAND
Phone [phone], phone/fax: [phone]
Sales department [phone]
www.radwag.com

EXI-01-04-06-14-GB
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JUNE 2014
"The drawings, photos and graphics
used are for illustrative purposes only."

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TABLE OF CONTENTS
1. DESIGN AND INTENDED USE ..........................................................................................4
2. SECURITY REQUIREMENTS.............................................................................................6
2.1. ATEX marking – symbols meaning..............................................................................7
2.2. Rating plates for indicator and scale............................................................................8
2.3. Placement of information stickers ................................................................................9
3. START-UP........................................................................................................................10
3.1. Scale placing.............................................................................................................10
3.2. Connecting power supplier ........................................................................................11
3.3. Switching on..............................................................................................................14
4. CLEANING .......................................................................................................................14
5. SERVICE AND REPAIRING.............................................................................................14
6. FUNCTIONS.....................................................................................................................15
7. KEYBOARD .....................................................................................................................16
8. FUNCTINS OF KEYS .......................................................................................................16
9. INSCRIPTIONS AND PICTOGRAMS...............................................................................17
10. USER MENU...................................................................................................................17
11. BROWSING USER’S MENU...........................................................................................18
11.1.Keypad…. ................................................................................................................18
11.2.Return to weighing....................................................................................................19
12. WEIGHING......................................................................................................................19
12.1.Tarring….. ................................................................................................................19
12.2.Tarring by inscribing tare value.................................................................................20
12.3.Zeroing…. ................................................................................................................21
12.4.Weighing for two range scales..................................................................................21
12.5.Setting of basic unit for weighing ..............................................................................22
12.6.Temporary weighing unit ..........................................................................................23
13. MAIN PARAMETERS .....................................................................................................24
13.1.Adjustment of filtering level.......................................................................................24
13.2.Autozero...................................................................................................................25
13.3.Tare function operation.............................................................................................26
13.4.Median filter..............................................................................................................27
13.5.Determining the minimal mass..................................................................................28
14. OPERATION MODES.....................................................................................................28
14.1.Enabling operating modes (functions).......................................................................28
14.2.Determining number of accessible modes ................................................................29
14.3.Counting parts of identical weight.............................................................................30
14.4.+/- control referring to the inscribed standard mass ..................................................33
14.5.Per cent deviation with reference to standard mass..................................................35
14.5.1.Mass standard weight determined by the measuring process................................35
14.5.2.Standard mass inscribed to scale memory.............................................................36
14.6.Automatic tare..........................................................................................................37
14.7.Measurement of the max force – peak hold..............................................................38
14.8.Totalizing..................................................................................................................38
14.8.1.Operation mode activation procedure....................................................................38
14.8.2.Totalizing procedure..............................................................................................39
14.8.3.Storing the last sum of weighings ..........................................................................40
15. ADJUSTMENT................................................................................................................41
15.1.Adjustment procedure ..............................................................................................41
15.2.Start mass estimation...............................................................................................43
16. ERRORS.........................................................................................................................45
17. RESPECTIVE STANDARDS ..........................................................................................45

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1. DESIGN AND INTENDED USE
Indicator of PUE C/31H/EX type, in cooperation with a weighing platform, is
intended for fast and precise measurements performed in explosive areas.
Tarring throughout the whole measuring range allows to determine the net
mass of measured loads.
The PUE C/31H/EX series indicator consists of:
•Main PCB (scale)
•Stainless steel housing
•Power supply connector
•Input cable gland (from weighing platform)
•Functional grounding clamp
•Overlay
•Indicator holder
View - dimensions
Dimensions of PUE C/31H/EX indicator.

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PUE C/31H/EX technical data:
PUE C/31H/EX
Housing type stainless steel
Ingress Protection Rating IP66/67
Display type LCD
Keyboard Microswitch (500 000 cycles)
OIML class III
Maximum quantity of A/D converter divisions 8388608
Number of verification intervals 6 000
Maximum input voltage 19,5 mV
Maximum voltage per verification interval 3,25 µV
Minimum voltage per verification interval 1 µV
Ambient temperature -10
o
C ≤ ta ≤ 40
o
C
Minimum load cell impedance
125 Ω
Maximum load cell impedance
1200 Ω
Connection of load cell 4 or 6 cables + shield
Number of ranges 1 or 2 ranges
Power supply - DC IN connector pin 1(4) pin 2(3)
Ui=9V
Ii=0,24A
Pi=0,6W
Ci≈0
Li≈0
I/O marking +5V, E, AGND, REF+, REF-, +IN, -IN
Parameters identical for each clamp
Uo=7,14V
Io=0,24A
Po=0,52W
Li≈0
Ci=6uF
Lo=40uH
Co=10nF
DESIGNATION
II 2G Ex ib IIC T4
KDB 06ATEX250

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2. SECURITY REQUIREMENTS
Please read this manual carefully prior the first usage. Following the
instruction, use the device as intended;
PUE C/31H/EX indicator, and scales with design based on the indicator,
can be used in explosive zone 1 and 2 where there is a mixtures of gases,
vapours and mists of II (second) explosion group and T1, T2, T3 or T4
temperature class.
WPT………/EX and WTC………/EX scales, because of the construction of
non-electric part of the platform and used materials, can be operated in 1
and 2 zone where there are mixtures of gases, vapours and mists of IIA,
IIB, or IIC group – according to „Technical Documentation” of the scale.
Anti-explosive safety of the PUE C/31H/EX indicator, and of scales
with design based on the indicator is assured by:
•Power supplied from the ZRi02 power supplier II (2) G [Ex
ib] IIC KDB 06ATEX251 manufactured by RADWAG, placed
behind the hazardous area or from another adapter with
appropriate parameters of intrinsically safe electrical circuit.
•Intrinsically safe design of PUE C/31H/EX indicator complying
with:
EN 60079-0 and EN 60079-11 standards, confirmed by
KDB 06ATEX250 certificate
•Using load cells certified for conformity with ATEX directive (on
anti-explosion safety)
•Making non-electric parts pf the scale in compliance with EN
13463-1 standard
•Observing recommendations in this manual by users
- marking of paragraphs crucial for anti-explosion safety

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2.1. ATEX marking – symbols meaning
Electrical equipment -
compatible with one or
few kinds of anti-
explosion designs
Explosive atmosphere:
G – caused by gas,
vapor and mist.
D – caused by dust.
Symbol of the
used anti-explosion
design type:
o – oil protection
p – gas protection with an
excess pressure
q – sand protection
d – flame-proof protection
e – strengthened design
ia - intrinsically safe design
for operation in zone
0,1,2,
ib - intrinsically safe design
for operation in zone 1,2,
Gas explosiveness group -
examples:
-IIA: propane (T1)
benzene (T3)
butane (T2)
ethanol (T2)
-IIB: ethylene (T2)
-IIC: acetylene (T2)
hydrogen (T1)
Temperature class –
surface max temperature
of the equipment parts that
are in touch with explosive
mixture:
T1: 4500C
T2: 3000C
T3: 2000C
T4: 1350C
T5: 1000C
T6: 850C
Temperature class
of the gas or vapor
auto ignition:
T1: > 4500C
T2: > 3000C
T3: > 2000C
T4: > 1350C
T5: > 1000C
T6: > 850C
Equipment group:
I – underground parts
of mines
II – all other places liable
to be endangered by
explosive atmospheres
Categories for group II
equipment:
1 - the device assures a
very high protection
level,
- to be operated in
zones 0,1,2
2 - the device assures a
high protection level,
- to be operated in
zones 1,2
3 - the device assures a
standard protection
level,
- to be operated in
zone 2
Security level
Gas atmosphere:
- Ga
- Gb
- Gc
Dust atmosphere:
- Da
- Db
- Dc

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PUE C/31H/EX indicator is a device of group II with „ib” protection therefore
“Gb” protection symbol may be omitted.
2.2. Rating plates for indicator and scales
Rating plate of the scale (exemplary)
Rating plate of the PUE C/31H/EX indicator
1 – Manufacturer’s Logo
2 – Name and phone number of the manufacturer
3 – Scale type, indicator type
4 – Factory number
5 – Metrological parameters of the scale
6 – Technical Documentation number
7 – Type approval certificate number (for verified scales)
8 – Ambient temperature
9 – geographical zone, ie. latitude and longitude data and the height above
the level – only verified scales

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10 – WEEE symbol
11 – ATEX marking relating to the scale (see point 2.1)
12 – EX marking stating that the device is intended for operation in
explosive areas
13 – accuracy class marking
14 – certificate number of used load cell
15 – CE marking with two last digits of the year of production and with a
number of notified body for NAWI directives
16 – ATEX certificate number relating to an indicator
17 – CE marking with the number of a notified body supervising EX device
production
18 – ATEX marking relating to the indicator (see point 2.1)
19 – manufacturer website address
2.3. Placement of information stickers
Protective stickers
Rating plate of the PUE
C/31H/EX indicator
Protective sticker
Power supply marking
Overlay with
ATEX marking

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3. START-UP
Please read this manual carefully prior the start-up. Following the
instruction, use the device as intended.
3.1. Scale placing
•The scale should be unpacked outside the hazardous area.
•Before moving the scale to the place of operation prepare a cable
for earthing the device against electrostatic charges.
NOTICE!!
In order to protect the indicator against gathering electrostatic
charge it is necessary to earth/zero its housing.
Connect the earthing lead/wire to cable connection points
marked with „ ” . See the manual for details about earthing.
•Situate scales and an indicator in hazardous area and connect
earthing/zeroing.
Functional
grounding mark
Protective sticker
Verification sticker
Rating plate of the scale

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NOTICE!
Mounting the indicator, placing the weighing platform and
earthing/zeroing should be performed when the explosive
atmosphere cannot appear.
Indicators with cable can be mounted on the rack, on the wall or on
the table using a special mounting kit.
Weighing platform should be placed on even and stable ground far
from sources of hit and draughts. It should be also levelled out
using the feet.
3.2. Connecting power supplier
1. Place the power supplier outside the hazardous area.
2. Connect the plug that terminates the supply cable (up to 20m) to
the socket marked as DC IN.
3. Connect the supplier to mains (230V AC).
4. In case of not using the scale unplug it from the mains.
NOTICE!
Scales with PUE C/31H/EX indicators can be supplied only
from ZRi02 power suppliers II (2) G [Ex ib] IIC KDB
06ATEX251 of RADWAG production, placed outside the
hazardous area, or from another supplier characterized by
below presented parameters of intrinsically safe electrical
circuit.
Intrinsicaly safe circuit parameters for power supplier used
for PUE C31H/EX indicator
Uo
8,61
V
Io
0,24
A
Po
0,52
W
Um
255
V
Lo
200
uH
Co
5,7
uF
Li
≈0
uH
Ci
≈0
uF

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Supplier connection
Safe area
Hazardous area EX
AC 230v 50Hz
Safe area
Hazardous area EX
AC 230v 50Hz
ZRi02 power
supplier
cable up to 20m
ZRi02 power
supplier
cable up to 20m
Scale with the indicator on a cable
Scale with the indicator on a pillar

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1 – earthing terminal
2 – power supply socket description
3 – power supply socket
4 – power supply socket
5 – screened load cell cable
Power connector parameters

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3.3. Switching on
•Press the ON/OFF key – keep pressing for about 1 sec.
•After switching on, wait for the test completion.
•The indication shall equal zero and the following pictograms shall be
seen:
- zero indication
- equilibrium
kg - weighing mode
•If the indication does not equal zero press the zeroing key .
Ready to use.
4. CLEANING
Cleaning can be performed only after unplugging from mains (230V AC). Use agents and
materials that do not cause gathering electrostatic charges on elements of the scale!
Do not use abrasive agents and solvents because
it can cause damage of the casing.
Cleaning should be performed when the appearance of explosive
gases is impossible
5. SERVICE AND REPAIRING

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In case of any problems with appropriate operation of the indicator, contact
the manufacturer’s service centre or any service centre authorised by
RADWAG.
In case of any fault or dysfunction the device should be passed to the
manufacturer’s service centre or, if this is not possible, the fault should be
reported in order to settle the conditions of repair.
Any intrusion (alteration, repair etc.) in the indicator or scale
based on PUE C/31H/EX indicator, by unauthorised persons
will cause a forfeiture of validity of certificates, declarations
and manufacturer’s warranty.
6. FUNCTIONS
•Filtering
•Autozero
•Minimal mass
•Counting pieces
•+/- control
•Deviation in per cents
•Peak hold
•Automatic tare
•Tare memory
•Manual tare inscription
•User’s calibration
•Totalizing
It is possible to disable selected functions thus making the scales adjusted
to one’s own needs. Access may be permitted to some particular functions
only if required. The user menu allows enabling/disabling a given
parameter, see the further part of the manual.

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7. KEYBOARD
8. FUNCTINS OF KEYS
Power on/off – keep it pressed for about 1 sec
Function key (selection of operation mode)
Confirmation of changes
- zeroing
- tarring
NOTICE:
Pressing and keys results in change of particular keys functions,
wherein the change is valid until setting parameters procedure is
completed. See the further part of the manual for details.
Information window
Display window
Function keys – „keypad”

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9. INSCRIPTIONS AND PICTOGRAMS
O.n. Inscription Description
1.
FIL
Filtering level
2.
PCS
Parts counting
3.
HiLo
+/- control in relation to reference mass
4. Auto Control and correction of zero indication of scale
5. toP Measurement of max. force influencing weighing pan
6. Add Totalizing
7.
Scale in autozero range (indication = precise zero)
8.
Result of measurement is stable (ready for readout)
9.
PCS
Scale in operating mode counting pieces
10.
kg (g)
Scale in operating mode weighing
11.
Net
Scale is tarred.
12. Min +/- control in relation to reference mass – setting lower
threshold or mass below first range
13. OK. +/- control in relation to reference mass: mass of load
between set threshold
14. Max +/- control in relation to reference mass – setting upper
threshold or mass above upper threshold.
10. USER MENU
The menu is divided into 5 basic groups. Each group has its individual
name starting with the capital letter P.
P1 rEAd
P 1.1 Fil
|
2
P 1.2 Auto
|
YES
P 1.3 tArA
|
no
P 1.4 Fnnd
|
no
P2 Prnt
P2.2 S_Lo
|

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P3 Unit
P3.1 StUn
|
kg
P4 Func
P4.1 FFun
|
ALL
P4.2 Funi
|
no
P4.3 PcS
|
no
P4.4 HiLo
|
no
P4.5 PrcA
|
no
P4.6 Prcb
|
no
P4.7 AtAr
|
no
P4.8 toP
|
no
P4.9 Add
|
no
P6 CAL
P6.1 St_u
|
* FUNCTION *
P6.2 uCAL
|
* FUNCTION *
11. BROWSING USER’S MENU
User moves in the menu using the scale keyboard.
11.1. Keypad
+ entering the main menu
+ inscribing tare value
selecting parameter of a given menu level
or changing the active parameter value
entering selected submenu or activation of
a parameter for modification
change confirmation
leaving a function without changes or
moving one level higher in the menu

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11.2. Return to weighing
NOTICE:
Changes introduced into the scale memory will be permanently
saved after return to weighing.
Press Fkey several times, keep pressing until message
<SAvE?> is seen.
Return to weighing
Upon noticing the message press: key – for changes confirmation or
key – for resigning. After completion of this procedure the scale returns
to weighing.
12. WEIGHING
Place a load on a weighing pan. After noticing stability
pictogram, , read the weighing result.
12.1. Tarring
In order to determine a net mass, deposit a package of load on a pan and
wait for the indication to be stable, next press TARE key - (indication
goes back to zero, Net symbol is displayed on the left side of the display).
After depositing a load on a pan, the display indicates net mass. Tarring
can be done repeatedly in full weighing range of the scale. When using tare

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Select the digit value
Select the digit to be set
function pay attention to maximum weighing range, it cannot be exceeded.
After removing the load and the package, display shows indication of sum
of tarred weights with minus sign.
NOTICE:
Tarring may not be performed when minus value or zero is displayed. In
such a case the display shows <Err3> message, short sound signal is
heard.
12.2. Tarring by inscribing tare value
It is possible to inscribe a tare value.
Procedure:
•Press simultaneously and keys
•On the display you will see:
– select the digit to be set
– select the digit value
•Using and keys set tare value,
•Press ,
•The scale returns to the weighing mode and the value of tare is
displayed with the “–“ sign,
•Tare value can be inscribed any time in weighing mode.