WIKA 7 Series User manual

Pressure gauges Model 7 per directive 94/9/EC (ATEX)
with inductive alarm sensors Model 831
Druckmessgeräte Typ 7 nach Richtlinie 94/9/EG (ATEX)
mit Induktiv-Grenzsignalgeber Typ 831
Manomètres Type 7 selon directive 94/9/EG (ATEX)
avec seuil d'alarme inductif Type 831
D
GB
F
II 2 GD c TÜV 03 ATEX 2304 X
Model 732.51.100 per ATEX with
inductive alarm sensors Model 831.1
Model 732.14.100 per ATEX with
inductive alarm sensors Model 831.12
Operating Instructions
Betriebsanleitung
Instructions d'utilisation

2WIKA Operating instructions pressure gauges Model 7 with 831 per ATEX
2080250 02/2004 GB/D/F
GB Operating instructions Model 7 per ATEX
with Model 831 Page 1-23
Betriebsanleitung Typ 7 nach ATEX
mit Typ 831 Seite 24-44
Instructions d'utilisation Type 7 selon ATEX
avec Type 831 Page 45-51
D
F

3WIKA Operating instructions pressure gauges Model 7 with 831 per ATEX
2080250 02/2004 GB/D/F
GB
Contents
Contents
1. Safety instructions 4
2. Description 4
3. Technical data and use in accordance with
intended use 5
4. Alarm contacts 7
5. Commissioning 9
6. Maintenance and servicing / cleaning 9
7. Repairs 9
Enclosure 1: Declaration of conformity for
Models 73X.51 and 73X.31 10
Enclosure 2: Declaration of conformity for
Typen 73X.14 and 76X.14 11
Enclosure 3: EC-type examination certificate (gases)
for slot-type initiators types SJ and SC
(WIKA-Model 831) 12-14
Enclosure 4: EC-type examination certificate (gases)
for SN-sensors types NJ and SJ
(WIKA-Model 831-SN / S1N) 15-18
Enclosure 5: EC-type examination certificate (dust)
for SN-proximity sensors types CB, CC, ... SJ
(WIKA-Model 831 and 831-SN / S1N) 19-23
Contents

4WIKA Operating instructions pressure gauges Model 7 with 831 per ATEX
2080250 02/2004 GB/D/F
GB
!
Caution
1. Safety instructions
The appropriate national safety regulations (i.e. VDE 0100 /
EN 60 079-14 / EN 837-2) must be observed when installing,
putting into operation and running these instruments.
TDo not work on gauge while under voltage
TSerious injuries and/or damage can occur should the appropriate
regulations not be observed
€TOnly appropriately qualified persons should work on these
instruments
1. Safety instructions / 2. Description
2. Description
TThe pressure gauges measure the pressure by means of resilient bourdon
tube measuring elements
TThe measuring features are in accordance with the standards EN 837-3 and
DIN 16 085
TIn addition the model 43X.31 also meet the demands made on safety pattern
pressure gauges outlined in the standard EN 837-3 (user protection)
The built-in electrical alarm contacts are non-contact slot-type inductive
proximity sensors, which are supplied from control units with circuits that are
certified to be intrinsically safe. When the adjustable set points are reached,
their output circuits will be opened or closed.
TAs a standard slot sensors model 831 are used according to EC-type
examination certificate PTB 99 ATEX 2219 X (see enclosure 3) and
ZELM 03 ATEX 0128 X (see enclosure 5)
TSN sensors models 831-SN and -S1N according to PTB 00 ATEX 2049 X
(see enclosure 4) and ZELM 03 ATEX 0128 X (see enclosure 5) are special
designs with safety features (that are not relevant to explosion protection)
for special applications
The connection values of the switches are in accordance with EN 60 947-5-6
("NAMUR").

5WIKA Operating instructions pressure gauges Model 7 with 831 per ATEX
2080250 02/2004 GB/D/F
GB
3. Technical data and use in accordance with intended use
3. Technical data and use in accordance with intended use
Working pressure
Model 73X.51/31: Steady: full scale value
Fluctuating: 0.9 x full scale value
Table 1: Static pressure / Overpressure safety maximum in bar
Model 73X.14: Steady: full scale value
Fluctuating: 0.9 x full scale value
Overpressure safety: 40, 100; 250 or 400 bar
Pressure connection
TAccording to the general technical regulations for pressure gauges,
respectively (i.e. EN 837-2 "Selection and installation recommendations for
pressure gauges").
When screw-fitting the gauges the force required for sealing must not be
applied through the case or terminal box but, using a suitable tool, only through
the spanner flats provided for this purpose at the square of the connector.
Temperature effect
When temperature of the pressure element deviates from reference temperature
(+20 °C): max. ±0.5 %/10 K of true scale value
IP Ingress protection
IP 54 per EN 60 529 / IEC 60 529
(with liquid filling IP 65)
Pressure ranges Static pressure Overpressure safe
either side
Standard Option Standard Option
0 ... 16 to 0 ... 40 mbar 2.5 6 2.5 -
0 ... 60 to 0 ... 250 mbar 6 10 2.5 6
0 ... 400 mbar 25 40 4 40
0 ... 0.6 bar 25 40 6 40
0 ... 1 bar 25 40 10 40
0 ... 1.6 bar 25 40 16 40
0 ... 2.5 to 0 ... 25 bar 25 40 25 40

6WIKA Operating instructions pressure gauges Model 7 with 831 per ATEX
2080250 02/2004 GB/D/F
GB
3. Technical data and use in accordance with intended use
Operating Temperature
Ambient (in Ex-operation): -20 ... +60 °C
Medium: The permissible medium temperature does not only depend on the
instrument design, but also on the ignition temperature of the
surrounding gases, vapours or dust. Both aspects have to be
taken into account. For permissible maximum medium
temperatures see table 1.
Attention! With gaseous substances the temperature may increase as a result
of the compression temperature. In such cases the pressure change rate has to
be slowed down resp. the permissible medium temperature has to be reduced.
Table 2: Permissible medium temperature
Temperature class of Permissible maximum medium
the ambient atmosphere temperature (in the pressure system)
(ignition temperature)
T 6 ( 85 °C < T ≤100 °C) +70 °C
T 5 (100 °C < T ≤135 °C) +85 °C
T 4 (135 °C < T ≤200 °C) +100 or +120 °C 1)
T 3 (200 °C < T ≤300 °C) +100 or +185 °C 1)
T 2 (300 °C < T ≤450 °C) +100 or +200 °C 1)
T 1 (T > 450 °C) +100 or +200 °C 1)
1) The higher values apply only to special versions with higher permissible media temperatures.
Installation
TNominal position per EN 837-3 / 9.6.6 Figure 7: 90° ( )
TPressure connection: lower mount (LM)
TIn order to ensure that with model 73X.31 pressure can be safely and reliably
vented through the case back, a distance of at least 25 mm has to remain
free behind the case!
TIn order to avoid any additional heating, the instruments must not be
exposed to direct solar irradiation while in operation!
TWith filled versions the ventilating valve at the top of the case must be
opened prior to commissioning!

7WIKA Operating instructions pressure gauges Model 7 with 831 per ATEX
2080250 02/2004 GB/D/F
GB
4. Alarm contacts
EC-type examination certificates
TStandard version Model 831.XX
PTB 99 ATEX 2219 X (enclosure 3) and ZELM 03 ATEX 0128 X (enclosure 5)
Depending on the number of switches and on the case diameter either
Model SJ2-N... or Model SJ3.5-...-N... is used.
TSafety pattern version Models 831.XX - SN or - S1N
PTB 00 ATEX 2049 X (enclosure 4) and ZELM 03 ATEX 0128 X (enclosure 5)
Depending on the number of switches and on the case diameter either
Models SJ 2-SN..., SJ 2-S1N..., SJ 3.5-SN.. or SJ 3.5-S1N... are used.
The built-in sensor type is stated on the product label of the pressure gauge.
Wiring details
TThe electrical connections should be made by qualified electricians
TConnection of the switches via screw terminals in the terminal box
TConductor cross section max. 1.5 mm
2
TThe terminal assignment is stated on the connection plate at the
pressure gauge
3. Technical data ... / 4. Alarm contacts
Permissible vibratory stress at the mounting location
TAs a matter of principle the instruments should only be mounted at locations
without vibratory stresses
TWhere required, a decoupling from the mounting location can be achieved
e.g. by a flexible connecting line from the measuring point to the pressure
gauge and mounting via a measuring instrument bracket.
TIf this is not possible, the following limits must not be exceeded:
Dry gauges: Frequency range < 150 Hz
(Model 732) Acceleration < 0.7 g (7 m/s2)
Liquid-filled gauges: Frequency range < 150 Hz
(Model 733) Acceleration < 4 g (40 m/s2)
The liquid filling has to be checked on a regular basis.
The liquid level must not drop below 75% of the gauge diameter.

8WIKA Operating instructions pressure gauges Model 7 with 831 per ATEX
2080250 02/2004 GB/D/F
GB
The permissible limits for Ui, Iiand Piof the intrinsically safe supply circuits
depend on the sensor type. They can be taken from the corresponding EC-type
examination certificates. (The sensor type is stated on the connection plate of
the pressure gauge.)
Suitable switch amplifiers are e.g.:
4. Alarm contacts
Circuit Sensor type Model designation EC-type exami- WIKA-
(s. Ex-certific.) Fa. Pepperl & Fuchs nation certificate Model
Model 1 standard KFD2-SR2-Ex1 PTB 00 ATEX 2080 904.31
standard KFD2-SR2 Ex2 PTB 00 ATEX 2080 904.32
Model 2 standard KHA6-SR2-Ex1 PTB 99 ATEX 2141 904.28
standard KHA6-SR2-Ex2 PTB 99 ATEX 2141 904.29
SN-sensors KFD2-SH-Ex1 PTB 00 ATEX 2042 904.33
SN-sensors KHA6-SH-Ex1 PTB 00 ATEX 2043 904.30
The desired value indicators for the alarm contacts are adjustable over the full
range of the instrument. Switching points shall be set in the ranges between
10 % und 90 % of the scale, to ensure switching accuracy and long life of the
mechanical measuring system.
Electromagnetic compatibility
EMC according to EN 60 947-5-2.
The instruments are to be protected against strong electromagnetic fields.
To set desired value indicator
The desired value indicators for the alarm contacts are adjustable over the
adjustment lock in the window with the aid of adjustment key (included in deli-
very; to be found on standard gauges on the outside edge of the junction box).
Adjustment key
removable
Desired value
indicators
(red set pointer)
Adjustment lock

9WIKA Operating instructions pressure gauges Model 7 with 831 per ATEX
2080250 02/2004 GB/D/F
GB
5. Commissioning ... 7. Repairs
5. Commissioning
During the commissioning process pressure peaks must be absolutely avoided.
Open the shut-off valves slowly.
6. Maintenance and servicing / cleaning
The instruments require no maintenance or servicing.
The indicator and switching function should be checked once or twice every
12 months. The instrument must be disconnected from the process to check
with a pressure testing device.
The instruments should be cleaned with a damp cloth moistened with soap
solution. For cleaning inside the instrument the mains power supply should be
disconnected by means of the plug box. It must be ensured that all the parts are
dry before the power is switched on again.
7. Repairs
Repairs are to be only carried out by the manufacturer or appropriately trained
personnel.
For further details see WIKA data sheet AC 08.01 or the data sheet for the
respective basic gauge.

10 WIKA Operating instructions pressure gauges Model 7 with 831 per ATEX
2080250 02/2004 GB/D/F
GB
Konformitätserklärung
Richtlinie 94 / 9 / EG (ATEX)
Wir erklären in alleiniger Verantwortung, dass
nachstehend genannte Produkte, Differenzdruck-
messgeräte mit Plattenfeder, gemäß gültigem
Datenblatt mit der Richtlinie übereinstimmen und
dem Konformitätsbewertungsverfahren
'Interne Fertigungskontrolle'
unterzogen wurden.
WIKA-Typen / WIKA models
73X.51 / 73X.31
Die Unterlagen werden aufbewahrt
unter der Aktennummer 8000550751
bei der benannten Stelle 0032
TÜV NORD CERT
Am TÜV 1
D-30519 Hannover
Die Geräte werden gekennzeichnet mit
Angewandte Normen:
EN 13463-1 Allgemeine Bestimmungen
prEN 13463-5 Konstruktive Sicherheit 'c'
Die eingebauten Grenzsignalgeber 831 sind EG-
baumustergeprüft. Die Nummern der Prüfbeschei-
nigungen und die Kennzeichnung
Declaration of Conformit
y
Directive 94 / 9 / EC (ATEX)
We declare under our sole responsibility that the
products mentioned below, differential pressure
gauges with diaphragm element, according to the
current data sheet correspond with the directive and
were subjected to the conformity assessment
procedure
'Internal Control of Production'.
Datenblätter / data sheets
PM 07.05
The dossier is retained
under file nr. 8000550751
at the notified body 0032
TÜV NORD CERT
Am TÜV 1
D-30519 Hannover
The gauges are marked with
II 2 GD c
Applied standards:
EN 13463-1 General requirements
prEN 13463-5 Constructional safety 'c'
The built-in alarm contacts 831 are EC-type-certified.
Numbers of certificates and marking
PTB 99 ATEX 2219 X bzw./resp. PTB 00 ATEX 2049 X II 2 G EEx ia IIC T6
und/and ZELM 03 ATEX 0128 X II 1 D Ex iaD 20 T...°C
Für das komplette Gerät liegt die Konformitäts- For the complete gauge the statement of conformity
aussage TÜV 03 ATEX 2304 X vor. TÜV 03 ATEX 2304 X is available.
WIKA Alexander Wiegand GmbH & Co. KG
Geschäftsbereich Prozessinstrumentierung / Division Process Instrumentation
Klingenberg, 21.10.2003
Armin Hawlik Werner Hünerth
Leiter Logistikzentrum 2 Leiter Qualitätssicherung
Manager Production and Logistics Quality Assurance Manager
Enclosure 1: