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6. Specifications
6. Specifications
Specifications
Pressure ranges
bar
Over pressure safety
bar
{Vacuum, gauge pressure, compound range, absolute pressure are available}
Materials
Wetted parts
■
- Model F-20
- Model F-21
Case
■
Electrical connection
■
Internal transmission
■
fluid
Power supply U
+
DC
Signal output and
R
A
maximum ohmic load R
Ohm
A
Test circuit signal / max.
load R
A
Adjustability zero/span
%
Response time
ms
(10 ... 90 %)
Insulation voltage
DC
Accuracy
2)
% of
span
Non-linearity
% of
span
Non-repeatability
% of
span
1-year stability
% of
span
WIKA operating instructions pressure transmitters, models F-20, F-21
Model F-20 / F-21
0.1
0.16
0.25
1
1.5
2
(other materials see WIKA diaphragm seal program)
Stainless steel
Stainless steel
Stainless steel
With internal spring clip terminal; cross section max. 2.5 mm
nickel-plated and {stainless steel} and {stainless steel conduit} threaded connection
Synthetic oil
11 ... 30 V
(14 ... 30 V with signal output 0 ... 10 V)
in
4 ... 20 mA, 2-wire
0 ... 10 V, 3-wire
Only for instruments with 4 ... 20 mA signal output. R
± 5 using potentiometers inside the instrument
1)
≤ 1
500 V
≤ 0.5
≤ {0.25} for measuring ranges ≥ 0.25 bar
≤ 0.2 (BFSL) according to IEC 61298-2
≤ 0.1
≤ 0.2 (at reference conditions)
0.4
0.6
1
1.6
2
4
5
10
O-ring: NBR {FPM/FKM}
R
≤ (U
– 10 V) / 0.02 A
A
B
R
> 10 k
A
A
2.5
4
6
10
10
17
35
35
, ground terminals, internal for brass
2
< 15 Ohm with 20 mA
EN
16
25
80
50
11
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