Samson 4763, Монтаж и эксплуатация

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EB 8359-2 EN
5
Technical data
Type 4736 Positioner
Travel range 7.5 to 60 mm, with 90 mm lever extension
Reference variable
Split-range 0 to 50 %
and 50 to 100 %
Reference variable span
(up to 50 mm travel)
4 to 20 mA (Ex) Internal resistance R
i
at 20 °C approx. 250 W ± 7 %
4 to 20 mA (not Ex) Internal resistance R
i
at 20 °C approx. 200 W ± 7 %
0 to 20 mA Internal resistance R
i
at 20 °C approx. 200 W ± 7 %
1 to 5 mA Internal resistance R
i
at 20 °C approx. 880 W ± 7 %
Range spring See table on page 14
Supply air Supply air 1.4 to 6 bar (20 to 90 psi)
Air quality acc.
to ISO 8573-1
(2001)
Maximum particle size and density: Class 4 · Oil content: Class 3
Pressure dew point: Class 3 or at least 10 K below the ambient temperature to
be expected
Output signal pressure p
st
Max. 0 to 6 bar (0 to 90 psi)
Characteristic Linear · Deviation from terminal-based conformity: £ 1.5 %
Hysteresis < 0.5 %
Sensitivity < 0.1 %
Operating direction Reversible
Proportional band X
p
(at 1.4 bar supply air)
1 to 3 % with spring 1 or 2
1 to 1.5 % with spring 3
Air consumption in
steady state, X
p
= 1 %
With 1.4 bar supply air: 0.19 m
n
³/h With 6 bar supply air: 0.5 m
n
³/h
Air output capacity At D p 1.4 bar: 3.0 m
n
³/h At D p 6 bar: 8.5 m
n
³/h
Transit time for Type 3271
“Stem extends”
240 cm²: £ 1.8 s · 350 cm²: £ 2.5 s · 700 cm²: £ 10 s
Permissible ambient
temperature
–20 to 70 °C;
With metal cable gland: –35 to 70 °C
Special version: –45 to 80 °C
The limits specified in the EC Type Examination Certificate additionally apply
for explosion-protected devices.
Version with oxygen as operating medium up to max. 60 °C
Influences
Temperature < 0.03 %/1 K
Supply air < 0.3 %/0.1 bar
Vibration: < 2 % between 10 and 150 Hz and 4 g
Effect when turned by 180°: < 3.5 %
Degree of protection IP 54 · Special version IP 65
Weight Approx. 1.2 kg
Materials Housing: Die-cast aluminum, chromated and plastic-coated
External parts: Stainless steel