Barksdale L2H - Manual (Page 8)

7 Maintenance/Cleaning
Maintenance
The pressure switch is maintenance free. Checking the set points lies within the discretion of the
user. The usual preventive maintenance work in accordance with the PED and ATEX guidelines
must always be carried out.
8 Technical Data
See data sheet
Dimensions in mm (inch)
Fig. 1: Temperature switch type MT1H-…
Contacts: color code and function
Lower contacts Upper contacts
C = Common = purple C = brown
NC = Normally
Closed
Contact
= blue NC = orange
NO = Normally
Open
Contact
= red NO = yellow
Fig. 2: Temperature switch type T2H-…
9 8
¾“ NPT
with cable gland
cable diameter 6…12 mm
95
(
3.
74)
Mounting screws
95 (3.74)
Reset button
(RD version only)
19 (0.75)
Option adjustable
hysteresis (RD) ш4.75 (0.11)
ш2.4 (0.09)
Adjustment knob
High circuit S2
Adjustment knob
Low circuit S1
41
.2
(
1.
62)
22 (0.87) 51 (2.01)
102 (4.016)
86 (3.39)
43 (1.69)
11
3
(
4.
4
5
)
10
2
(
4
.016)
113
(
4.
4
5
)
74.
5 (
2.
93
)
9 (
0.
3
5
)
39.5 (1.56)
6 (0.24)
ø9.5 (0.37)
Copper version
Stainless steel version
13.
5 (
0.
5
3 )
56
(
2.
2
)
11
1
(
4.
3
7
)
63.
5 (
2.
5
)
48 (
1.
89)
19 (0.75)
Knock-out cable entry
Ground screw
½“ NPT
with cable gland
cable diameter 6…12 mm
97 (
3.
8
2
)
115 (
4.
5
3
)
55 (
2.
1
65)
48.
5 (
1.
91
)
4 (0.16)
19 (0.756) 35 (1.38)
70 (2.76)
36.5 (
1.4
4
)
Mounting screw
Ground
screw
Mounting screws (with nuts)
60 (2.36) 12.5 (0.49)
21 (0.83)
7.2 (0.28)
Reset button
(RD version only)
ø6.5
5 (
0.
19
7
)
62
(
2.
44)
41 (
1.
61)
11 (0.43)
Option adjustable
hysteresis (RD)
72 (
2.
8
4
)
ш9.5 (0.37)
48.5 (1.91)
28 (1.1)
113 (
4.
4
5
)
10
2
(4.
01
6
)
ш4.75 (0.11)
ш2.4 (0.09)
Contacts: color code and function
C = Common = purple
NC = Normally Closed Contact = blue
NO = Normally Open Contact = red
Copper version
Stainless steel version
Adjustment knob