12 EB 8387-3 EN
Design and principle of operation
Type 3731-3 Ex d Positioner (technical data in test certificates additionally apply for explosion-protected devices)
Air
output
capacity
to fill actuator
with air
At
∆
p = 6 bar: 8.5 m
n
³/h · At
∆
p = 1.4 bar: 3.0 m
n
³/h · K
Vmax(20 °C)
= 0.09
to vent
actuator
At
∆
p = 6 bar: 14.0 m
n
³/h · At
∆
p = 1.4 bar: 4.5 m
n
³/h · K
Vmax(20 °C)
= 0.15
Permissible ambient
temperature
–40 to 80 °C
The limits in the test certificate additionally apply.
Influences Temperature:
≤
0.2/10 K · Supply air: None
Vibration:
≤
0.25 % up to 2000 Hz and 4 g acc. to IEC 770
EMC Complying with the requirements of EN 61000-6-2, EN 61000-6-3, EN 61326-1 and
NAMUR Recommendation NE 21
Electrical connections Two threaded connections with ½ NPT thread, optionally with M20 x 1.5
Screw terminals for 2.5 mm² wire cross-section
Explosion protection See "Summary of explosion-protection certificates"
Degree of protection IP 66/NEMA 4 X
Use in safety-
instrumented systems (SIL)
Observing the requirements of IEC 61508, the systematic capability of the control valve
for emergency venting as a component in safety-instrumented systems is given.
Use is possible on observing the requirements of IEC 61511 and the required hardware
fault tolerance in safety-instrumented systems up to SIL 2 (single device/HFT = 0) and SIL
3 (redundant configuration/HFT = 1).
Compliance ·
Materials Housing Die-cast aluminum EN AC-AlSi10Mg(Fe) (EN AC-44300) acc. to DIN EN 1706
chromated and powder paint coating
External parts Stainless steel 1.4301/1.4305/1.4310
Weight Approx. 2.5 kg
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