Barksdale T1X-EX Operating Instructions Manual - Page 5
Browse online or download pdf Operating Instructions Manual for Switch Barksdale T1X-EX. Barksdale T1X-EX 8 pages. Mechanical temperature switches
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¾" NPT
22 (0.87)
Option adjustable
hysteresis (RD)
½" NPT
19 (0.756)
Contacts: color code and function
C
= Common
NC
= Normally Closed Contact
NO
= Normally Open Contact
Fig. 11:
Temperature switch type L2H-...
12
Adjustment knob
High circuit S2
Adjustment knob
Low circuit S1
51 (2.01)
102 (4.016)
Ground screw
ø14.5 (0.43)
Lower contacts
Upper contacts
= purple
C
= brown
= blue
NC
= orange
= red
NO
= yellow
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Contact Protection
The micro switches used are normally suitable for both direct and alternating current operation.
Inductive, capacitive and lamp loads may, however, considerably reduce the life expectancy of a micro
switch and, under extreme circumstances, even damage the contacts.
Depending on the application spark suppression and current limiting is recommended (see succeeding
figures).
MS
R1
C cable
Load
R3
R2
Fig. 1: Protection in case of capacitive loads
R1: Protection against starting current
rushes R2,R3: Protection against high
discharge currents
MS
U
=
Diode
Load
Fig. 3: Protection in case of continuous
current and inductive load by recovery
diode
MS
MS
R
R
Fig. 2: Lamp load provided with resistance in
series or parallel connection to switch
of condensers
MS
U
c
R
Load
Fig. 4:
Protection in case of alternating
current and inductive load by RC-link
5