FISCHER DS 11 Скачать руководство пользователя страница 2

 

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1.6 

Inadmissible Modes of Operation 

The  operational  safety  of  this  instrument  can  only 
be  guaranteed  if it is  used  as intended. The instru-
ment  model  must  be  suitable  for  the  medium  used 
in the system. The limit values given in the technical 
data may not be exceeded. 

1.7 

Safe working practices for mainte-
nance and installation work 

The safety instructions given in this operating man-
ual,  any  nationally  applicable  regulations  on  acci-
dent prevention and any of the operating company's 
internal  work, operating and safety  guidelines must 
be observed.  

The  operating  company  is  responsible  for  ensuring 
that all required maintenance, inspection and instal-
lation  work  is  carried  out  by  qualified  specialized 
personnel. 

1.8 

Pictogram explanation 

 

  WARNING! 

…  indicates  a  potentially  dangerous 
situation,  non-observance  of  which 
could  endanger  persons,  animals,  the 
environment or objects. 

 

 

 

INFORMATION! 

…  highlights  important  information  ef-
ficient and smooth operation. 

 

 

 

TIP! 

… indicates recommendations that are 
not  specifically  necessary  in  certain 
situations but which could be useful. 

 

 

Application purpose 

The DS 11 is a combined display and switching de-
vice for differential pressure, over-pressure and un-
der-pressure.  This  series  is  ideally  suited  for  vari-
ous measuring tasks in industrial applications or the 
sanitary field. 

Typical applications are measuring differential pres-
sure between the supply and return in heating sys-
tems  and  monitoring  filters  and  pumps.  Pressure 
chamber  and  measuring  diaphragms  are  available 
in  various  materials.  This  allows  the  devices  to  be 
adapted to the various requirements. 

Product and functional description 

3.1 

Function diagram 

 

Item 

Description 

Pressure chamber 

Motion train 

Tappet 

Micro-switch 

Switch point setting 

Measuring diaphragm 

Measuring springs 

3.2 

Design and mode of operation 

A  robust  and  durable  membrane  measuring  instru-
ment is used as a measuring system, which is suit-
able  for  overpressure  and  underpressure  meas-
urements.  The  units  use  the  same measuring  prin-
ciple for all three measuring applications.  

In the rest position, the spring forces on both sides 
of  the  membrane  are  balanced  out.  Due  to  the 
pressure  or  underpressure  to  be  measured,  a  sin-
gle-sided  force  is  created  on  the  membrane  which 
shifts  the  membrane  system  against  the  measure-
ment range springs up to equalization of the spring 
forces. In case of overload, the membrane supports 
against the metallic support surfaces.  

A  centrally  positioned  tappet  transfers  the  move-
ment  of  the  membrane  system  on  the  motion  train 
and operating elements of the micro-switches. 

Installation and assembly 

The standard device is designed for wall mounting. 
The device can be mounted to even walls using the 
assembly  foot  that  is  cast  to  the  middle  of  the  de-
vice.  It  is  also  possible  to  fit  the  device  in  switch 
cabinets  using  the  switch  panel  installation  kit 
DZ11. 

It is calibrated ex-works for vertical installation; this 
is the only allowed installation position. 

To  ensure  safety  during  installation  and  mainte-
nance,  we  recommend  installing  a  suitable  shut-off 

Содержание DS 11

Страница 1: ...ar with the in stallation commissioning and operation of this product Specialized personnel are persons who can assess the work they have been assigned and recognize potential dangers by virtue of their specialized train ing their skills and experience and their knowledge of the pertinent standards 1 3 Risks due to Non Observance of Safe ty Instructions Non observance of these safety instructions ...

Страница 2: ...toring filters and pumps Pressure chamber and measuring diaphragms are available in various materials This allows the devices to be adapted to the various requirements 3 Product and functional description 3 1 Function diagram Item Description 1 Pressure chamber 2 Motion train 3 Tappet 4 Micro switch 5 Switch point setting 6 Measuring diaphragm 7 Measuring springs 3 2 Design and mode of operation A...

Страница 3: ...r pressure to the side of the device When measuring the pressure only the connection is used the connection is used to measure under pressure The pressure sensing lines need to be kept as short as possible and installed without sharp bends to avoid interfering delay times The pressure sensing lines must be installed on a gradient so that no air pockets e g for liquid meas urements or water pockets...

Страница 4: ... Set the measurement value pointer to the zero point scale using the zero point correction screw Re mount the hood 5 3 Switch point setting Remove the plug in the hood The required switch points can be set guide value scales according to the markings by us ing a screwdriver The achievable setting accu racy is 5 1 Replace the plug after completing the settings 5 4 Function test Remove both plugs in...

Страница 5: ...tected against impacts It should be transported in the original packaging or a suitable transport container 8 Service All defective or faulty devices should be sent direct ly to our repair department Please coordinate all shipments with our sales department Warning Process media residues in and on dismantled devices can be a hazard to people animals and the environment Take adequate preventive mea...

Страница 6: ...measuring range Switch hysteresis approx 2 5 of the upper range value Load data contact AC DC Umax 250V 30V Imax 5A 0 4A Pmax 250 VA 10 W Ports Process connection Inner thread G 1 4 Connecting shank G DIN EN 837 Cutting ring connections for 6 8 10 mm brass steel galvanized or stainless steel electr connection Fixed wire numbered cables Cable connection socket 7 pole plug connection Materials Press...

Страница 7: ... Process connection variants M20x1 5 Cable screw connection Cable connection socket or 7 pin plug connection SW19 Connection G inner thread Connection spigot G according to DIN EN 837 DZ 13 14 Four spindle equalization and shut off valve Mounting the control panel opened opened Measuring device Venting Function diagram DZ 13 14 Venting n a for DZ13 Cutting ring screw connection Control panel cut o...

Страница 8: ...read 1 4 18 NPT EXT Chrome Nickel Steel 1 4 Cutting ring screw connection made of steel for 6 mm pipe 2 0 Cutting ring screw connection made of steel for 8 mm pipe 2 1 Cutting ring screw connection made of steel for 10 mm pipe 2 2 Cutting ring screw connection made of 1 4571 for 6 mm pipe 2 4 Cutting ring screw connection made of 1 4571 for 8 mm pipe 2 5 Cutting ring screw connection made of 1 457...

Страница 9: ...d or taken out of operation for repairs or tests to disconnect differential pressure devices within the affected systems from the mains supply The shutoff devices can therefore also be used for function tests on site In contrast to DZ13 the DZ14 also has a venting valve to vent the conected pipe system The shutoff and venting valves are designed for the rated pressure level PN40 The housing can be...

Страница 10: ...10 16 Page 14 Manufacturer s Declarations and Certificates 14 1 EC Declaration of conformity ...

Страница 11: ...11 16 Page 14 2 Certificate functional security SIL2 ...

Страница 12: ...12 16 Page ...

Страница 13: ...13 16 Page 14 3 GL approval ...

Страница 14: ...14 16 Page ...

Страница 15: ...15 16 Page ...

Страница 16: ...ithout notice Changements techniques sous réserve Fischer Mess und Regeltechnik GmbH Bielefelder Str 37a D 32107 Bad Salzuflen Tel 49 5222 9740 Fax 49 5222 7170 eMail info fischermesstechnik de www fischermesstechnik de 14 4 EAC Declaration of conformity ...

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