T 8313 EN
5
Table 1.2:
Explosion‑protection certificates for Type 3372
Type 3372
With integrated i/p converter
With Type 3725 Positioner (direct attachment)
1)
Actuator area
120 cm²
120 cm²
350 cm²
Rated travel
15 mm
15 mm
15 mm
30 mm
ATEX
No.
PTB 99 ATEX 2049
PTB 11 ATEX 2020 X
Date
1999-07-06
2011-08-25
Type of protection
II 2G Ex ia IIC T6
II 2G Ex ia IIC T4
CSA Group
No.
–
2703735 X
Date
2014-06-03
Type of protection
Ex ia IIC T4;
Class I, Zone 0, AEx ia IIC T4;
Class I, Div. 1, Groups A, B, C & D
GOST
No.
–
RU C-DE.GB08.B.00697
Date
2014-12-15
Valid until
2019-12-14
Type of protection
1EX ia IIC T4 Gb X
1)
Versions with Type 3730-x or Type 3731-x Positioner on request
Table 1.3:
Further technical data for Type 3372
Type 3372
With integrated i/p converter
With Type 3725 Positioner (direct attachment)
Actuator area
120 cm²
120 cm²
350 cm²
Rated travel
15 mm
15 mm
15 mm
30 mm
Pneumatic data
Tight-closing function
Stem
retracts
Stem
retracts
Stem
extends
Stem
extends
Stem
retracts
Stem
retracts
Stem
extends
Stem
extends
Stem
retracts
Stem
extends
Stem
retracts
Stem
extends
Bench range
0.4 to 1.4
1.4 to 2.3
2.1 to 3.3 0.4 to 1.4
1.4 to 2.3
2.1 to 3.3 1.5 to 2.1 2.1 to 2.7 1.5 to 2.7 2.2 to 3.8
Supply pressure
Max.
6 bar
Max. 4 bar
Max.
6 bar
Max. 6 bar
1)
Max. 6 bar
Materials
Actuator housing
Aluminum, powder paint coated
Aluminum, powder paint coated
1.0332
Diaphragm
NBR
NBR
NBR
Actuator stem
1.4305
1.4305
1.4401/1.4404
Weight (without positioner)
kg (approx.)
3.7
3.3
15
Attachment
Form B
Form B or Form C
(see Table 2)
Form C
Compliance
·
1)
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.
Table 1.4:
Technical data of Type 4744‑2 Limit Switch
Type 4744‑2 Limit Switch
Travel range
15 mm
Permissible load
AC voltage: 250 V/5 A
DC voltage: 250 V/0.4 A
Temperature range
–20 to +60 °C
Degree of protection
IP 66
Explosion protection
Flameproof enclosure II 2G Ex db IIC T6-T5
Weight, approx.
0.4 kg
Associated documentation
u
T 8367
