VEGA VEGADIF 34 … 51 - Manual (Page 33)

VEGADIF 34 … 51 33
20094-EN-030731
++
-
Z S
4-key adjustment elements
Your VEGADIF is provided with the following
direct adjustment elements:
- four adjustment keys
- one step switch
The adjustment keys are located below a
sliding cover laterally on the electronics hous-
ing. The slider cover is marked with z (zero)
and s (span) and can be moved after loosen-
ing the recessed head screw. When the slid-
ing cover is moved, two adjustment keys are
exposed; when the sliding cover is rotated, all
four adjustment keys are exposed.
First of all the sliding cover exposes 2 keys
and then all four keys
+
-
Z S
Set-up
Example 2: Meas. range 0 … 10 bar
0 .0 0 0 bar
4 mA
2,5 bar
8 mA
5 bar
12 mA
7,5 bar
16 mA
10 bar
20 mA
Display I
2 .5 0
5 .0 0
7 .5 0
1 0 .0 0
∆
p
If you have a VEGADIF without LC-display,
connect an ammeter with measuring range
0 … 20 mA (e.g. digital multimeter) to the
terminal and tag 1. A precision ammeter is
recommended for exact adjustment. Push the
keys with a small screwdriver.
The second adjustment element, the step
switch, is located below the LC-display; to use
it, remove the display, as described under
„2.2 Pre-installation“.
Via these four keys in conjunction with the LC-
display, you can carry out the most important
adjustments such as zero, span and bias
pressure directly on the transmitter.
The step switch below the LC-display
The settings on the step switch mean:
-
0 Adjustment with PC or HART ® , there-
fore damping adjustable from 0 … 40 s
- 2 Damping 0.5 s linear
- 3 Damping 1.0 s linear
- 4 Damping 2.0 s linear
- 5 Damping 4.0 s linear
- 6 Damping 8.0 s linear
- 7 Damping 16.0 s linear
-
8 Adjustment with PC or HART ® , there-
fore damping adjustable from 0 … 40 s
- 9 Damping 0 s extracted by root
- A Damping 0.5 s extracted by root
- B Damping 1.0 s extracted by root
- C Damping 2.0 s extracted by root
- D Damping 4.0 s extracted by root
- E Damping 8.0 s extracted by root
- F Damping 16.0 s extracted by root
∆
p
Current I
∆
p/p
Current I
linear extracted by root