Samson Type 3766, Mounting And Operating Instructions

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1.2 Technical data
Positioner
Travel range, adjustable
Opening angle
Direct attachment: 7.5 to 30 mm,
Attachment according to IEC 60534-6: 7.5 to 120 mm
Depending on the type of cam disk: 30 to 90°
Reference variable
Signal range
Span
Max. overload limit
0.2 to 1bar (3 to 15 psi)
0.4 to 0.8 bar (6 to 12 psi)
2 bar (29 psi)
Supply pressure 1.4 to 6 bar (20 to 90 psi)
Signal pressure p (output) Can be limited between approx. 2.5 to 6.0 bar (38 to 90 psi)
Characteristic Linear
Deviation from terminal-based conformity ≤ 1%
Hysteresis
≤
0.3 %
Sensitivity
≤
0.1 %
Operating direction Reversible
Proportional band X <1 to 2.5 % (proportional-action coefficient Kp: >100 to 40)
Air consumption At 1.4 bar supply pressure
≤ 230 l /h
At 6 bar supply pressure
≤ 230 l /h with min. adjusted press. regulator
Air delivery Filling the actuator: 3.0 m /h
Venting the actuator: 4.5 m /h
8.5 m /h
14.0 m /h
Permissible ambient
temperature
–20 °C to +80 °C with plastic cable gland; –40 °C to +80 °C with metal cable gland
(special version down to –45 °C available)
Positioner with position transmitter only –20 to 70 °C,
See attached inspection certificates for explosion-protected versions
Influences Temperature:
≤
0.3 %/10 K Supply pressure:
≤
1 % between 1.4 and 6 bar
Vibration: none from 10 to 150 Hz and 4 g
Explosion protection Type of protection EEx ia IIC T6 (see attached inspection certificate)
Degree of protection IP 54 (IP 65 by using a filter check valve, see Accessories table)
Electromagnetic
compatibility
Requirements according to EN 61000-6-2, EN 61000-6-3,
and NAMUR Recommendation 21 are fulfilled
Weight Approx. 1 kg
Inductive limit switches
2 proximity switches Type SJ 2-SN
Control circuit Ratings according to downstream transistor relay
Hysteresis at rated travel
≤
1 %
8
EB 8355-1 EN
Technical data