Samson 3730-0 Mounting and operating instructions - page 8
8
EB 8384-0 EN
Design and principle of operation
Positioner (technical data in test certificates additionally apply for explosion-protected devices)
Load impedance
Version without explosion protection:
£
6 V (corresponding to 300
W
at 20 mA),
explosion-protected version:
£
6 V
Supply air
Supply pressure
Air quality acc. to
ISO 8573-1
(edition 2001-02):
1.4 to 7 bar (20 to 105 psi)
Max. particle size and density: Class 4
Oil content: Class 3 · Pressure dew point: Class 3 or at least 10 K below the lowest
ambient temperature to be expected
Signal pressure (output)
0 bar up to supply pressure, can be limited to approx. 2.4 bar over DIP switch
Characteristic
Linear;
Deviation from terminal-based conformity
£
1 %
Hysteresis
£
1 %
Sensitivity
£
0.1 %
Direction of action
Selectable over DIP switch
Air consumption, st. state
Independent of supply pressure approx. 120 l
n
/h
Air delivery
Actuator pressurized
Actuator vented
At
D
p = 6 bar: 8.5 m
n
3
/h, at
D
p = 1.4 bar: 3.0 m
n
3
/h
K
Vmax(20 °C)
= 0.09
at
D
p = 6 bar: 14.0 m
n
3
/h, at
D
p = 1.4 bar: 4.5 m
n
3
/h K
Vmax(20 °C)
= 0.15
Permissible ambient
temperature
–20 to +80 °C, with metal cable gland –45 to +80 °C
The limits in the test certificate additionally apply for explosion-protected devices.
Influences
Temperature:
£
0.15 %/10 K
Supply air: None
Vibration:
£
0.25 % up to 2000 Hz and 4 g acc. to IEC 770
Electromagnetic
compatibility
Complying with requirements specified in EN 61000-6-2, EN 61000-6-3,
EN 61326-1 and NAMUR Recommendation NE 21
Explosion protection ATEX
FM
CSA
JIS
GOST
Type 3730-01: II 2G Ex ia IIC T6, II 2D Ex tb IIIC T 80 °C IP 66
Type 3730-08: II 3G Ex nA II T6, II 3G Ex ic IIC T6, II 3D Ex tc IIIC T80°C IP 66
Type 3730-03: Class I, Zone 0 AEx ia IIC; Class I, II, III, Div.1, Groups A–G;
Class I, Div. 2, Groups A–D; Class II, Div.2, Groups F, G
Type 3730-03: Ex ia IIC T6; Class I, Zone 0; Class II, Groups E–G;
Ex nA II T6; Class I, Zone 2; Class II, Division 2, Groups E–G
Type 3730-07: Ex ia IIC T6
Type 3730-x00000000x00x014: 1 Ex ia IIC T6 X, DIP A21 Ta80°C, IP 65;
Ex nA II T6, Ex nL IIC T6, DIP A22 Ta80°C, IP 65
Use in safety-
instrumented systems
acc. to IEC 61508
Suitable for use in safety instrumented systems up to SIL 2 (single device) and SIL 3
(redundant configuration), safety shutdown at a reference variable 0 mA
Degree of protection
IP 66
Materials
Die-cast aluminum EN AC-Al Si12(Fe) (EN AC-44300) acc. to DIN EN 1706,
chromated and plastic coated
External parts: Stainless steel 1.4571 and 1.4301
Weight
Approx. 1 kg