1.2 Technical data
8 EB 8355-1 EN
Design and principle of operation
Type 3766 Positioner
Travel range 7.5 to 30 mm Direct attachment to Type 3277 Actuator
7.5 to 120 mm Attachment acc. to IEC 60534-6 (NAMUR)
Opening angle 70°, 75° or 90° depending on the cam disk
Reference
variable w
Signal range 0.2 to 1 bar (3 to 15 psi)
Span 0.4 to 0.8 bar (6 to 12 psi)
Overloadable max. 2 bar (29 psi)
Supply air Auxiliary power 1.4 to 6 bar (20 to 90 psi)
Air quality acc. to
ISO 8573-1,
edition 2001-02
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 p
st
(output) Can be limited between 0 to approx. 2.5 bar and 0 to 6 bar
(0 to approx. 35 psi and 0 to 90 psi)
Characteristic Linear characteristic
Deviation from terminal-based conformity:
£
1 %
Hysteresis
£
0.3 %
Sensitivity
£
0.1 %
Operating direction Reversible
Proportional band X
p
0.5 to 2.5 % (proportional-action coefficient K
p
: > 200 to 40)
Air consumption With 1.4 bar supply air With 6 bar supply air
£
230 I
n
/h
£
230 I
n
/h
1)
Air delivery Actuator filled with air 3.0 m
n
³/h 8.5 m
n
³/h
Actuator vented 4.5 m
n
³/h 14.0 m
n
³/h
Permissible
ambient
temperature
2)
Standard –20 to 80 °C: Optional limit switches/solenoid valve/position
transmitter with plastic cable gland
–40 to 80 °C: Optional limit switches/solenoid valve with
metal cable gland
Low temperature version –50 to 80 °C: Optional limit switches/solenoid valve with
metal cable gland
The technical data of the test certificate also apply for explosion-pro
-
tected versions.
Influences Temperature:
£
0.3 %/10 K
Supply air:
£
1 % between 1.4 and 6 bar
Vibrations: None between 10 and 150 Hz and 4 g
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