Samson 3372 User Manual page 5

Table 1.2: Explosion‑protection certificates for Type 3372
Type 3372
Actuator area
Rated travel
No.
ATEX
Date
Type of protection
No.
Date
CSA Group
Type of protection
No.
Date
GOST
Valid until
Type of protection
Versions with Type 3730-x or Type 3731-x Positioner on request
1)
Table 1.3: Further technical data for Type 3372
Type 3372
Actuator area
Rated travel
Pneumatic data
Tight-closing function
Bench range
Supply pressure
Materials
Actuator housing
Diaphragm
Actuator stem
Weight (without positioner)
kg (approx.)
Attachment
Compliance
With "stem extends" fail-safe action and travel stop, the supply pressure must not exceed the upper spring range value by more than 1.5 bar.
1)
Table 1.4: Technical data of Type 4744‑2 Limit Switch
Type 4744‑2 Limit Switch
Travel range
Permissible load
Temperature range
Degree of protection
Explosion protection
Weight, approx.
Associated documentation
T 8313 EN
With integrated i/p converter
120 cm²
15 mm
PTB 99 ATEX 2049
1999-07-06
II 2G Ex ia IIC T6
–
–
With integrated i/p converter
120 cm²
15 mm
Stem Stem Stem Stem
retracts retracts extends extends
0.4 to 1.4 1.4 to 2.3 2.1 to 3.3
Max. Max.
Max. 4 bar
6 bar 6 bar
Aluminum, powder paint coated
NBR
1.4305
3.7
Form B
With Type 3725 Positioner (direct attachment)
120 cm²
15 mm
Class I, Div. 1, Groups A, B, C & D
With Type 3725 Positioner (direct attachment)
120 cm²
15 mm
Stem Stem Stem Stem
retracts retracts extends extends
0.4 to 1.4 1.4 to 2.3 2.1 to 3.3
Max. 6 bar 1)
Aluminum, powder paint coated
NBR
1.4305
3.3
Form B or Form C
(see Table 2)
·
15 mm
AC voltage: 250 V/5 A
DC voltage: 250 V/0.4 A
–20 to +60 °C
IP 66
Flameproof enclosure II 2G Ex db IIC T6-T5
0.4 kg
u T 8367
350 cm²
15 mm 30 mm
PTB 11 ATEX 2020 X
2011-08-25
II 2G Ex ia IIC T4
2703735 X
2014-06-03
Ex ia IIC T4;
Class I, Zone 0, AEx ia IIC T4;
RU C-DE.GB08.B.00697
2014-12-15
2019-12-14
1EX ia IIC T4 Gb X
350 cm²
15 mm 30 mm
Stem Stem Stem
retracts extends retracts
1.5 to 2.1 2.1 to 2.7 1.5 to 2.7
Max. 6 bar
1.0332
NBR
1.4401/1.4404
15
Form C
1)
Stem
extends
2.2 to 3.8
5