76
10 Supplement
WIKA Operating Instructions - Differential pressure transmitter DPT-20
Connection of the feeding power supply
unit
Networks of overvoltage category III
Altitude above sea level
Ʋ
by default
up to 2000 m (6562 ft)
Ʋ
with connected overvoltage protection
up to 5000 m (16404 ft)
Pollution degree
22)
2
Protection rating (IEC/EN 61010-1)
II
10.2 Device communication Foundation Fieldbus
In the following, the necessary device-specific details are shown. You can find further information of
Foundation Fieldbus on
Overview
The following table gives you an overview of the instrument versions and the corresponding device
descriptions, the electrical characteristics of the bus system as well as the applied function blocks.
Revisions Data
DD-Revision
Rev_01
CFF-File
020101.cff
Device Revision
0101.ff0, 0101.ff5
Cff-Revision
xx xx 01
Device software revision
> 1.1.0
ITK (Interoperability Test Kit) Number
6.2.0
Electricial Characteristics
Physicial Layer Type
Low-power signaling, bus-pow
-
ered, FISCO I.S.
Input Impedance
> 3000 Ohms between
7.8 KHz - 39 KHz
Unbalanced Capacitance
< 250 pF to ground from either
input terminal
Output Amplitude
0.8 V P-P
Electrical Connection
2 Wire
Polarity Insensitive
Yes
Max. Current Load
11 mA
Device minimum operating voltage
9 V
Transmitter Function Blocks
Resource Block (RB)
1
Transducer Block (TB)
1
Standard Block (AI)
3
Execution Time
30 mS
22)
When used with fulfilled housing protection.
