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5.10  Display 

The  parameters  for  influencing  the  display  are 
summarised in this menu. 

The  most  important  parameter  is 

Colour

.  A  fixed 

background  colour  (red,  green,  yellow,  blue,  pink, 
turquoise,  white)  can  be  selected  here.  There  are 
also  two  auto-functions  with  colour  switching  avail-
able.  One  possible  colour  switch  is  red-green,  the 
second  colour  switch  is  red-yellow-green.  Alterna-
tively,  the  background  illumination  can  be  perma-
nently deactivated.  

In the automatic colour switch mode it is possible to 
enter  the  required  switching  thresholds  "red-yellow 
switching",  "yellow-green  switching",  "green-yellow 
switching",  "yellow-red  switching"  or  "red-green 
switching" and "green-red switching". 

The  switching  thresholds  can  be  moved  within  the 
measuring  range.  The  series  of  switch  points  can-
not be altered. 

 

 

Note:

 If a range cannot be used, the as-

sociated switch thresholds can be set to 
the same value. An example is shown in 
the sketch: 

Only the green, yellow and red ranges are required 
here. To fade out the lower ranges red and  yellow, 
the  switch  thresholds  "red-yellow  switching"  and 
"yellow-green  switching"  are  set  to  the  start  of  the 
measuring range. 

 

Fast  and  unwanted  changing  of  the  colour  can  be 
prevented via the 

Hysteresis

 value. The hysteresis 

can  be  set  between  the  range  0.1...  Can  be  set 
10 ...  

Note:

  In  the  case  of  large  hysteresis 

values,  steps  must  be  taken  to  ensure 
that  the  ranges  of  the  individual  colours 
do  not  overlap.  Otherwise  it  is  possible 

that  the  colour  change  may  not  function  in  the  de-
sired way. 

The parameter 

Delay 

offers a further option to pre-

vent  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 the range 
between 0…1800s. 

If  the  lighting  should  not  shine  constantly,  the  pa-
rameter 

Lighting  period

  can  be  used  to  define 

when  it  should  turn  off  after  the  last  button  is 
pressed.  In  addition  to  the  permanent  lighting,  the 
automatic  shutdown  is  possible  after  10…600  s. 
The set time is only valid if the background colour is 
not set to "off". 

Amongst  other  things,  the  legibility  of  the  display 
depends on the temperature and the reading angle. 
To  ensure  optimised  legibility,  this  can  be  adjusted 
using the parameter 

Contrast

. When the contrast is 

changed,  it  is  possible  that  the  display  appears 
empty  or almost completely  black. In this case, the 
contrast must be turned up or down. 

The  display  can  be  switched  via  the  parameter 

Bargraph

  yes/no:  the  measured  value  is  either 

shown in large digits or the display shows small dig-
its and an additional bargraph to display the meas-
ured value more clearly. 

5.11  System 

The menu items 

Software 

– 

Info 

and

 C

onfig 

– Info 

provide  information  about  the  device.  This  infor-
mation helps to answer questions about the  device 
quickly. 

The 

Software - Info

 shows the device type, control-

ler  ID  and  the  firmware  version.  The 

Config  -  Info

 

states  the  basic  measuring  range,  the  defined  out-
put signal and the existing contacts. 

The statistics provide  information about the  operat-
ing  time  and  the  relay  operations  since  delivery. 
The  operating  time  is  shown  in  days  (d)  and  hours 
(h) 

In the 

Password

 menu, the menu can be protected 

against  unauthorised  access.  The  password  is  a 
number between 1 and 999. 0 means that no pass-
word is active.  

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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