WIKA GCS-1 User manual

Operating instructions
Betriebsanleitung
EN
DE
Gasaschenwaage Typ GCS-1
Gas cylinder scale model GCS-1
Gas cylinder scale model GCS-1

2WIKA operating instructions gas cylinder scale model GCS-1
11145676.07 03/2020 EN/DE
EN
DE
Operating instructions model GCS-1 Page 3 - 20
Betriebsanleitung Typ GCS-1 Seite 21 - 38
© 05/2003 WIKA Alexander Wiegand SE & Co. KG
All rights reserved. / Alle Rechte vorbehalten.
WIKA®is a registered trademark in various countries.
WIKA®ist eine geschützte Marke in verschiedenen Ländern.
Prior to starting any work, read the operating instructions!
Keep for later use!
Vor Beginn aller Arbeiten Betriebsanleitung lesen!
Zum späteren Gebrauch aufbewahren!

3WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
Contents
Contents
1. General information 4
2. Design and function 5
2.1 Overview. . . . . . . . . . . . . . . . . . . . . . . .5
2.2 Description . . . . . . . . . . . . . . . . . . . . . . .5
2.3 Scope of delivery . . . . . . . . . . . . . . . . . . . . .5
3. Safety 6
3.1 Explanation of symbols . . . . . . . . . . . . . . . . . . .6
3.2 Intended use . . . . . . . . . . . . . . . . . . . . . .6
3.3 Improper use . . . . . . . . . . . . . . . . . . . . . .7
3.4 Personnel qualification . . . . . . . . . . . . . . . . . . .7
3.5 Additional safety instructions for gas cylinder scale per ATEX . . . . . .8
3.6 Special hazards . . . . . . . . . . . . . . . . . . . . .9
3.7 Labelling/Safety marks . . . . . . . . . . . . . . . . . . .9
3.8 Ex marking . . . . . . . . . . . . . . . . . . . . . . 10
3.9 Special conditions for use (X conditions) . . . . . . . . . . . . 10
4. Transport, packaging and storage 10
4.1 Transport. . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Packaging and storage . . . . . . . . . . . . . . . . . . 10
5. Commissioning 11
6. Setting of zero point/span 13
7. Faults 14
8. Maintenance and cleaning 15
8.1 Maintenance . . . . . . . . . . . . . . . . . . . . . 15
8.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . 15
9. Return and disposal 16
9.1 Return. . . . . . . . . . . . . . . . . . . . . . . . 16
9.2 Disposal . . . . . . . . . . . . . . . . . . . . . . . 16
10. Specifications 17
10.1 Approvals, directives and certificates. . . . . . . . . . . . . 19
10.2 Safety-related maximum values . . . . . . . . . . . . . . 19
Annex 1: EU declaration of conformity 20

4WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
1. General information
■
The gas cylinder scale described in the operating instructions has been designed
and manufactured using state-of-the-art technology. All components are subject
to stringent quality and environmental criteria during production. Our management
systems are certified to ISO 9001 and ISO 14001.
■
These operating instructions contain important information on handling the instru-
ment. Working safely requires that all safety instructions and work instructions are
observed.
■
Observe the relevant local accident prevention regulations and general safety regula-
tions for the instrument's range of use.
■
The operating instructions are part of the product and must be kept in the immediate
vicinity of the instrument and readily accessible to skilled personnel at any time. Pass
the operating instructions on to the next operator or owner of the instrument.
■
Skilled personnel must have carefully read and understood the operating instructions
prior to beginning any work.
■
The manufacturer's liability is void in the case of any damage caused by using the
product contrary to its intended use, non-compliance with these operating instruc-
tions, assignment of insufficiently qualified skilled personnel or unauthorised modifi-
cations to the instrument.
■
The general terms and conditions contained in the sales documentation shall apply.
■
Subject to technical modifications.
■
Further information:
- Internet address: www.wika.de
- Relevant data sheet: PE 87.19
- Application consultant: Tel.: [phone]
Fax: [phone]
E-Mail: [e-mail]
Abbreviations
2-wire Two connection lines are used for the voltage supply.
The measuring signal also provides the supply current.
U+Positive power supply terminal
U- Negative power supply terminal
S+Positive output terminal
S - Negative output terminal
1. General information

5WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
2. Design and function
2.1 Overview
Potentiometer
Weighing surface
Electrical connection
Product label
2.2 Description
With the gas cylinder scale, the mass of the gas cylinder and its contents is measured
and converted to an electrical signal.This electrical signal varies in proportion to the
mass and can be evaluated accordingly.
2.3 Scope of delivery
■
Gas cylinder scale with 6 m cable outlet
■
Test report
■
Screw, M6
Cross-check scope of delivery with delivery note.




2. Design and function

6WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
3. Safety
3.1 Explanation of symbols
WARNING!
... indicates a potentially dangerous situation that can result in serious injury
or death, if not avoided.
WARNING!
... indicates a potentially dangerous situation in the hazardous area that
can result in serious injury or death, if not avoided.
CAUTION!
... indicates a potentially dangerous situation that can result in light
injuries or damage to property or the environment, if not avoided.
Information
... points out useful tips, recommendations and information for efficient
and trouble-free operation.
3.2 Intended use
WARNING!
Serious physical injury and/or property damage caused by using
incorrect product version
If an incorrect gas cylinder scale is selected with regard to the measu-
ring range, version and specific measuring conditions, serious physical
injuries and/or damage to property can result.
▶Before installation, commissioning and operation, ensure that the
appropriate gas cylinder scale has been selected.
The gas cylinder scale is used to measure mass.
The instrument has been designed and built solely for the intended use described here,
and may only be used accordingly.
The technical specifications contained in these operating instructions must be
observed. Improper handling or operation of the instrument outside of its technical
specifications requires the instrument to be taken out of service immediately and
inspected by an authorised WIKA service engineer.
The manufacturer shall not be liable for claims of any type based on operation contrary
to the intended use.
3. Safety

7WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
3.3 Improper use
WARNING!
Injuries through improper use
Improper use of the instrument can lead to hazardous situations and
injuries.
▶Refrain from unauthorised modifications to the instrument.
Any use beyond or different to the intended use is considered as improper use.
3.4 Personnel qualification
WARNING!
Risk of injury should qualification be insufficient!
Improper handling can result in considerable injury and damage to
property.
▶The activities described in these operating instructions may only be
carried out by skilled personnel who have the qualifications described
below.
▶Keep unqualified personnel away from hazardous areas.
Skilled personnel
Skilled personnel are understood to be personnel who, based on their technical training,
knowledge of measurement and control technology and on their experience and
knowledge of country-specific regulations, current standards and directives, are capable
of carrying out the work described and independently recognising potential hazards.
Special knowledge for working with instruments for hazardous areas:
The skilled personnel must have knowledge of ignition protection types, regulations and
provisions for equipment in hazardous areas.
Special operating conditions require further appropriate knowledge, e.g. of aggressive
media.
3. Safety

8WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
3.5 Additional safety instructions for gas cylinder scale per ATEX
WARNING!
Danger to life due to loss of explosion protection
Non-observance of these instructions and their contents may result in the
loss of explosion protection.
▶For operation in hazardous areas, observe the lower voltage levels in
accordance with chapter 10.2 “Safety-related maximum values”.
▶Observe the following instructions:
■
Actions or alterations to the gas cylinder scale, which are not described in these
operating instructions, are not permitted.
■
If faults cannot be eliminated, the gas cylinder scale must be taken out of operation
immediately and prevented from being accidentally put back into service.
■
Always operate the gas cylinder scale within its overload limits.
■
Observe the operating parameters in accordance with chapter 10 “Specifications”.
■
Ground the cable shield at one end, preferably in the safe non-Ex area
(EN 60079-14). For instruments with cable outlet, the shield is connected to the
case. An additional connection of the shield is only permitted if any potential losses
between the shield connection (e.g. at the supply unit) and the case can be avoided
(see EN 60079-14).
■
Connect the gas cylinder scale with marking “Ex nA IIC T4/T5” to a power and signal
circuit with transient protection in accordance with EN 60079-15, chapter 23 C.
■
Disconnect the gas cylinder scale with the marking Ex nA, or when it is operated
under nA conditions, only after the power has been turned off.
■
Fine-stranded leads with bare ends must be finished with end splices (cable prepa-
ration)
■
Provide equipotential bonding between the ground at the voltage supply and the gas
cylinder and/or the installation, in case they are connected conductively.
3. Safety

9WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
3. Safety
3.6 Special hazards
WARNING!
Observe the information given in the applicable type examination
certificate and the relevant country-specific regulations for installation and
use in hazardous areas (e.g. IEC 60079-14, NEC, CEC). Non-observance
can result in serious injury and/or damage to property.
For additional important safety instructions for instruments per ATEX,
→ see chapter 3.5 “Additional safety instructions for gas cylinder scale per
ATEX”
WARNING!
Physical injuries and damage to property and the environment
caused by hazardous media
Improper handling with hazardous media, such as, for example, oxygen,
acetylene, flammable or toxic substances, as well as in refrigeration
systems, compressors etc., can cause dangerous or harmful media to
escape into the environment, which can lead to damage or injury.
▶Observe general rules and relevant regulations.
WARNING!
Physical injuries and damage to property and the environment
through residual media
Residual media in dismounted gas cylinder scales can result in a risk to
persons, the environment and equipment.
▶Take sufficient precautionary measures.
3.7 Labelling/Safety marks
Product label
P# Product no.
S# Serial no.
Pin assignment
Date of
manufacture
Gas Cylinder Scale GCS-1-A
WIKA Alexander Wiegand SE & Co. KG 63911 Klingenberg Made in Germany
Output signal
Supply voltage
Measuring range
Barcode
Safety-related
data
Ex marking
Explanation of symbols
Before mounting and commissioning the instrument, ensure
you read the operating instructions!

10 WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
3. Safety / 4. Transport, packaging and storage
3.8 Ex marking
DANGER!
Danger to life due to loss of explosion protection
Non-observance of these instructions and their contents may result in the
loss of explosion protection.
▶Observe the safety instructions in this chapter and further explosion
instructions in these operating instructions.
▶Observe the information given in the applicable type examination
certificate and the relevant country-specific regulations for installation
and use in hazardous areas (e.g. IEC 60079-14, NEC, CEC).
Check whether the classification is suitable for the application. Observe the relevant
national regulations.
3.9 Special conditions for use (X conditions)
■
The cap protecting the two potentiometers for adjusting zero and span shall not be
removed when explosive atmosphere is present.
■
Additional clamping of the cable is provided by the manufacturer.This clamping shall
not be removed.
4. Transport, packaging and storage
4.1 Transport
Check the gas cylinder scale for any damage that may have been caused during trans-
portation.
Obvious damage must be reported immediately.
CAUTION!
Damage through improper transport
With improper transport, a high level of damage to property can occur.
▶When unloading packed goods upon delivery as well as during
internal transport, proceed carefully and observe the symbols on the
packaging.
4.2 Packaging and storage
Do not remove packaging until just before mounting.
Keep the packaging as it will provide optimum protection during transport (e.g. change
in installation site, sending for repair).
Permissible conditions at the place of storage:
Storage temperature: -20 ... +60 °C [-4 ... +140 °F]

11WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
Avoid exposure to the following factors:
■
Direct sunlight or proximity to hot objects
■
Mechanical vibration, mechanical shock (putting it down hard)
■
Soot, vapour, dust and corrosive gases
■
Hazardous environments, flammable atmospheres (for version without explosion
protection)
Store the gas cylinder scale in its original packaging in a location that fulfils the
conditions listed above. If the original packaging is not available, pack and store the
instrument as described below:
1. Wrap the instrument in an antistatic plastic film.
2. Place the instrument, along with the shock-absorbent material, in the packaging.
3. If stored for a prolonged period of time (more than 30 days), place a bag containing
a desiccant inside the packaging.
5. Commissioning
DANGER!
Danger to life from explosion!
Through working in flammable atmospheres, there is a risk of explosion
which can cause death.
▶Only carry out set-up work in non-hazardous environments!
Electrical mounting
DANGER!
Danger to life due to loss of explosion protection
Non-observance of these instructions and their contents, as well as
improper equipotential bonding, may result in the loss of explosion
protection.
▶Observe the following instructions for a safe equipotential bonding:
■
An equipotential bonding connection facility is provided nearby the cable entry:
Screw M6 (6 mm)
■
Use a conductor with a cross-section of at least 4 mm².
■
The connection shall be corrosion-resistant and locked against rotation.
■
Only ground the shield of the supply line at one end.
■
The shield of the supply line is internally connected to the case.
If the equipotential bonding is made via the shield of the supply line and
also via a separate 4 mm² cable on the case, attention must be paid to
potential differences. Compensating currents (ground loops) should be
avoided.
36
18
29,5 29,5
49,3
49,3
aktuelles Brückenblech
geplantes Brückenblech
234
234
18
18
19 19
31,3
31,3
aktuelles Brückenblech
geplantes Brückenblech
C
aktuelles Brückenblech ohne geänderte Kabelschelle
B
geplantes Brückenblech ohne geänderte Kabelschelle
A
geplantes Brückenblech mit geänderte Kabelschelle
A (2 : 1)
B (2 : 1)
C (2 : 1)
S
16.02.15
F.Mergen
Ers. durch:
Blatt
Blätter
Bearb.
Gepr.
Norm
Datum
Zust.
Sonderprodukt: Zeichnung unterliegt
nicht dem Änderungsdienst.
Kopie nach Fertigung vernichten !
Ers. für:
Allgemein-
toleranz
ISO 2768-m
Name
Änderung
Datum
Werkstoff
Name
Benennung
Zeichnungsnummer
Maßstab1:2
1
A2
Ursp:
039.1.200.X
1
Übersicht Brückenbleche S039/235x235
(aktuelle und geplante Ausführung)
4. Transport, packaging ... / 5. Commissioning, operation

12 WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
Pin assignment (2-wire)
U+/S+ Brown (BN)
U-/S- Black (BK)
Pin assignment (4-wire)
U+ Red (RD)
S+ Orange (OG)
U- Black (BK)
S- Brown (BN)
Non-Ex area Ex area
Voltage source
Load
Shield (connected to case)
Brown
Black
Separate line
(to be provided by the end
user)
Shield (connected to case)
Non-Ex area Ex area
Voltage source
Load Brown
Black
Orange
Red
Separate line
(to be provided by the end
user)
The shield is connected to the case.
Ensure that no moisture can enter at the cable end.
Functional check
The output signal must be proportional to the mass. If this is not the case, this may
indicate a damaged measuring cell. In this case, see chapter 7 “Faults”.
When weighing a gas cylinder make sure that the gas cylinder scale is
seated on a solid and level base and that it cannot catch on any other
objects.
5. Commissioning, operation

13WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
6. Setting of zero point/span
DANGER!
Danger to life from explosion!
Through setting the zero point or the span in flammable atmospheres,
there is a risk of explosion which can cause death.
▶Only carry out zero point settings and span settings outside the hazar-
dous area.
▶Ensure that the surrounding atmosphere is not dangerous (not explo-
sive).
Preparation
1.
Unscrew the protective screw connection with a screwdriver (see figure A).
▶
Access to the potentiometers is open.
2. Introduce a reference mass which is at least 3 times as accurate as the given
accuracy.
Setting the zero point
1. Remove the load from the gas cylinder scale.
2. By adjusting the signal to 4 mA, the zero point can be set (see figure B).
Setting the span
1. Set the span by loading the scale with the appropriate reference mass and adjus-
ting the signal to 20 mA.
2. Check the zero point.
3. If the zero point is not right, repeat the procedure.
4. Screw the sealing cap with seal back in, in order to close the potentiometer entry.
6. Setting of zero point/span

14 WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
6. Setting of zero point/span / 7. Faults
7. Faults
Fault Causes Measure
No output signal No supply voltage Check voltage supply
Cable break Check the continuity
Wiring reversed Rectify polarity
Gas cylinder scale defective due
to incorrect supply voltage or
current pulse
Replace the gas cylinder scale
Constant output
signal upon change
in weight
Scales platform blocked Check the scale is free-standing
Mechanical overload Replace the gas cylinder scale
Gas cylinder scale defective due
to incorrect supply voltage or
current pulse
Replace the gas cylinder scale
A
After the adjustment, check that the system is functioning correctly.
Recommended recalibration cycle: 1 year
B

15WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
7. Faults / 8. Maintenance and cleaning
Fault Causes Measure
Signal too low Supply voltage too low Check the supply voltage
Load too high Rectify the load or supply voltage
Mechanical overload Recalibrate the gas cylinder scale
Replace the gas cylinder scale
Zero point signal too
low or too high
Mechanical overload Recalibrate the gas cylinder scale
Replace the gas cylinder scale
Signal characteristic
non-linear
Mechanical overload Replace the gas cylinder scale
If faults cannot be eliminated by means of the listed measures, the gas cylinder scale must
be taken out of operation immediately and prevented from being accidentally put back into
service. In this case, contact the manufacturer.
If a return is needed, please follow the instructions given in chapter 9.1
“Return”.
8. Maintenance and cleaning
8.1 Maintenance
The gas cylinder scale is maintenance-free.
Repairs must only be carried out by the manufacturer.
8.2 Cleaning
CAUTION!
Damage to the gas cylinder scale
Improper cleaning may lead to damage to the gas cylinder scale.
▶Electrical connections must not come into contact with moisture.
▶Do not use any aggressive cleaning agents.
▶Do not use any hard or pointed objects for cleaning.
For information on returning the instrument see chapter 9.1 “Return”.

16 WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
9. Return and disposal
9. Return and disposal
WARNING!
Physical injuries and damage to property and the environment
through residual media
Residual media in dismounted gas cylinder scales can result in a risk to
persons, the environment and equipment.
▶Take sufficient precautionary measures.
9.1 Return
Strictly observe the following when shipping the instrument:
All instruments delivered to WIKA must be free from any kind of hazardous substances
(acids, bases, solutions, etc.) and must therefore be cleaned before being returned.
When returning the instrument, use the original packaging or a suitable transport
packaging.
To avoid damage:
1. Wrap the instrument in an antistatic plastic film.
2. Place the instrument, along with the shock-absorbent material, in the packaging.
Place shock-absorbent material evenly on all sides of the transport packaging.
3. If possible, place a bag, containing a desiccant, inside the packaging.
4. Label the shipment as transport of a highly sensitive measuring instrument.
Enclose the completed return form with the instrument.
Information on returns can be found under the heading “Service” at
www.wika.com.
9.2 Disposal
Incorrect disposal can put the environment at risk.
Dispose of instrument components and packaging materials in an environmentally
compatible way and in accordance with the country-specific waste disposal regulations.
Do not dispose of with household waste. Ensure a proper disposal in
accordance with national regulations.

17WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
10. Specications
10. Specifications
Measuring range
Measuring range see product label
Weight
Measuring range (kg) 0 ... 27.2 0 ... 45.4 0 ... 136.1
Overload safety (kg) 0 ... 115 0 ... 130 0 ... 340
Measuring range (lbs) 0 ... 60 0 ... 100 0 ... 300
Overload safety (lbs) 0 ... 250 0 ... 300 0 ... 750
Output signal
Output signal
GCS-1-A (2-wire) 4 ... 20 mA
GCS-1-G (4-wire) DC 0 ... 5 V
GCS-1-F (4-wire) DC 0 ... 10 V
Load
Model GCS-1-A ≤ (supply voltage - 10 V) / 0.02 A
Model GCS-1-G > 5 kΩ
Model GCS-1-F > 10 kΩ
Voltage supply
Supply voltage DC 14 ... 30 V
Maximum output current ≤ 35 mA
Accuracy
Analogue signal ≤ 0.1 % of span
Including non-linearity, hysteresis, zero offset and end value
deviation (corresponds to measured error per IEC 61298-2)
Non-linearity (IEC 61298-2) ≤ 0.05 % of span (BFSL)
Long-term stability (per
month)
≤ 0.04 % of span (at reference condition)
Adjustability of zero point/
span
±5 % through built-in potentiometer
Temperature effect
Mean TC zero point ≤ ±0.1 % of span/10 K
Mean TC span ≤ ±0.1 % of span/10 K

18 WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
Reference conditions (per IEC 61298-1)
Temperature 15 ... 25 °C [59 ... 77 °F]
Atmospheric pressure 860 ... 1,060 mbar [12.5 ... 15.4 psi]
Air humidity 45 ... 75 % gauge
Nominal position Horizontal
Supply voltage DC 24 V
Load see output signals
Operating conditions
Free fall Resistant to impact of 90 kg from a height of 10 cm
Ingress protection
(IEC 60529)
IP65
Ex marking (option) see product label
Permissible temperature ranges
Ambient
■
-20 ... +50 °C [-4 ... +122 °F] (T4)
■
-20 ... +40 °C [-4 ... +104 °F] (T5)
Storage -20 ... +60 °C [-4 ... +140 °F]
Electrical connections
Type of connection Cable outlet
Cable length 6 m [≈20 ft]
Short-circuit resistance S+vs. U-
Reverse polarity protection U+vs. U-
Insulation voltage DC 500 V
Materials
Sensor Aluminium
Case Stainless steel
Base plate Stainless steel
10. Specications

19WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
10. Specications
10.1 Approvals, directives and certificates
CE conformity
■
EMC directive EN 61326 emission (group 1, class B) and immunity (industrial
application)
■
ATEX directive Ignition protection type “n”
Specication Ignition protection type
ATEX II 3G Ex nA IIC T4/T5 Gc X
IECEx BVS 16.0001X Ex nA IIC T4/T5 Gc
10.2 Safety-related maximum values
Model Supply voltage
U+
Power Pmax Ignition protection
type
GCS-1-A (4 ... 20 mA) DC 14 ... 24 V 1 W Ex nA IIC T4/T5 Gc X
IECEx BVS 16.0001X
Ex nA IIC T4/T5 Gc
GCS-1-G (DC 0 ... 5 V) DC 14 ... 24 V 1 W Ex nA IIC T4/T5 Gc X
IECEx BVS 16.0001X
Ex nA IIC T4/T5 Gc
GCS-1-F (DC 0 ... 10 V) DC 14 ... 24 V 1 W Ex nA IIC T4/T5 Gc X
IECEx BVS 16.0001X
Ex nA IIC T4/T5 Gc

20 WIKA operating instructions, gas cylinder scale, model GCS-1
11145676.07 03/2020 EN/DE
EN
Annex 1: EU declaration of conformity