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Safety guidelines 

1.1 

General Information 

This  operating  manual  contains  in-
structions  fundamental  to  the  installa-
tion,  operation  and  maintenance  of 
the  instrument  that  must  be  observed 

unconditionally.  It  must  be  read  by  the  assembler, 
operator and the specialized personnel in charge of 
the instrument before it is installed and put into op-
eration.  This  operating  manual  must  be  kept  in  an 
easily accessible place at the installation site.  

The subsequent sections on general safety instruc-
tions  (1.2  -  1.7)  as  well  as  the  following  special  in-
structions    about  assembly  in  particular,  commis-
sioning  and  maintenance  (2  to  10)  contain  im-
portant  safety  instructions,  the  non-observance  of 
which can endanger persons, animals and physical 
objects. 

1.2 

Personnel Qualification 

Staff assigned to assembly, operating, maintenance 
and  inspection  tasks  shall  be  adequately  qualified 
for this work and must be sufficiently instructed and 
trained  to  meet  the  requirements  of  assembly,  op-
erating, maintenance and inspection work. 

1.3 

Risks due to Non-Observance of  
Safety Instructions 

Non-observance of these safety instructions, the in-
tended use of the device or the limit values given in 
the  technical  specifications  can  be  hazardous  or 
cause  harm  to  persons,  the  environment  or  the 
plant itself. Fischer  Mess-  und  Regeltechnik GmbH 
will  not  be  liable  for  damage  claims  if  this  should 
happen. 

1.4 

Safety Instructions for the Operating 
Company and the Operator 

The  safety  instructions  on  correct  operation  of  the 
instrument  must  be  observed.  The  operating  com-
pany  must  make  them  available  to  the  installation, 
maintenance,  inspection  and  operating  personnel. 
Dangers arising from electrical components, energy 
discharged  by  the  medium,  escaping  medium  and 
incorrect installation of the instrument must be elim-
inated. The  particulars  can  be  found  in  the  respec-
tive  regulations  such  as  DIN,  EN,  accident  preven-
tion regulations (UVV) and - for industry-specific in-
dividual applications - also in the industry guidelines 
issued  by  the  DVWG,  Ex, GL, etc.  as  well  as  VDE 
and local EVUs. 

  

Operating Manual 

DE46  Digital differential pressure switch / transmitter 

 

with 4-digit colour change LCD 

 

 

Table of Content 

1

 

Safety guidelines

 

2

 

Application purpose

 

3

 

Description of the Product

 

4

 

Installation and assembly

 

5

 

Commissioning

 

6

 

Maintenance

 

7

 

Transport

 

8

 

Service

 

9

 

Accessories

 

10

 

Disposal

 

11

 

Technical data

 

12

 

Dimensional drawings

 

13

 

Order Codes

 

14

 

Declaration of conformity

 

 

 

Summary of Contents for DE46

Page 1: ...fety instructions the in tended use of the device or the limit values given in the technical specifications can be hazardous or cause harm to persons the environment or the plant itself Fischer Mess u...

Page 2: ...situations but which could be useful 2 Application purpose Display and switching device for differential pres sure of gaseous media The instrument is to be ex clusively used for the applications agre...

Page 3: ...nsing lines 4 2 Electronic connection By authorized and qualified specialized person nel only The electrical connection of the instrument shall be performed according to relevant VDE and local electri...

Page 4: ...re menu select Quit and press Example Setting the switch points In normal mode press the button to enter the menu Menu level Switch points appears in the display to change the switch points press the...

Page 5: ...measuring cell corresponds to that of a capillary throttle You can set the response time to pressure jumps in the range 0 0 to 100 s But with maximum damping it will take more than 2 minutes for the r...

Page 6: ...EAR is active the other menu items are cancelled Square rooted Here the input signal is square rooted before being sent to the display and the out put This is necessary e g for flow measurements with...

Page 7: ...nt unwanted colour changes Here the colour change can be delayed in the range between 0 100s The following applies for instruments with firmware 2 16 and later Here the colour change can be delayed in...

Page 8: ...wn stream components Check the leak tightness of the pressure con nection lines Check the electrical connections The exact test cycles shall be adapted to the oper ating and ambient conditions If vari...

Page 9: ...g voltage Ub 20 32 V DC AC Connection type Three wire Output signal 0 20 mA 4 20 mA 0 10 V DC Apparent ohmic resistance Ub 26V RL Ub 4V 0 02A Ub 26V RL 1100 RL 2 k Power consumption approx 2 W VA Meas...

Page 10: ...nless otherwise specified 90 75 25 5 M12 plug connection Wall mounting plate optional Rear view without wall mounting plate 70 5 61 5 4x boreholes for Tapping screws 3 5 Hose screw connection for 6 or...

Page 11: ...DC AC 20 32 V DC AC N Measuring unit Selectable pressure units W Measured value display contact elements 4 digit colour change LCD 2 relay contacts C 4 digit colour change LCD 2 semiconductor switch...

Page 12: ...without notice Changements techniques sous r serve 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...

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