Sensors and Switches
Product Information / Order Codes
Level-Temperature Switch § Type SLTS
two level contacts
one temperature contact
J
q
LL
one level contact
one temperature contact
H or L
4
1
45
(1.77)
41
(1.61)
25 23,5
(.98) (.93)
2
3
16
(.63)
M3 ground
J
3.5
(.14)
Ø 11
(.43)
3
Lower level
contact L2
G
2
1
34
(1.34)
4
Upper level
contact H
Hex 36
(1.42)
HH
Ø 23,5
(.93)
Wiring Scheme
L2
L1
Product Description
aSeries and Type
Level-Temperature Switch
eL2 (Lower Level Contact)
Without lower level contact
O
251 mm / 9.88 in (SLTS 12 only)
L251
403 mm / 15.87 in (SLTS 18 only)
L403
Other level contact positions on request (only for SL)
SLTS
bStem Length
L1: 305 mm / 12 in L2: 251 mm / 9.88 in
L1: 457 mm / 18 in L2: 403 mm / 15.87 in
Custom stem lengths on request *
cSwitching Temperature
Without temperature switch
+60 °C / +140 °F
+70 °C / +158 °F
12
18
SL
Note: Others on request
G048
G115
hElectrical Connection
similar DIN VDE 0627 / IEV 61984
B12
N16
gVoltage (Volt AC/DC)
48 Volt max. (standard option)
115 Volt max. (for thread N16 only)
dH (Upper Level Contact)
Without upper level contact
O
41 mm / 1.61 in
H41
Other level contact positions on request (only for SL)
CB
M12
M12 pin terminal
* Note: If you choose the option SL, please consult
STAUFF for further information.
A
Last load
Protective diode
Contact Protection
To reduce the high reverse voltage produced when a reed
switch opens, the following contact protection can be applied.
ƒƒ DC voltage: a diode parallel to the load, see figure A
ƒƒ AC voltage: a RC-network parallel to the load, see figure B
and table below
B
24
48
110
Dimensional drawings: All dimensions in mm (in).
50 VA
C (µF) R (Ω)
0,1
1
0,022 1
0,0047 22
Last load
C (µF)
0,47
0,1
22
Technical Data
Materials
ƒƒ Stem:
ƒƒ Float/Sealing:
Brass
NBR (Buna-N®)
ƒƒ Max. operating temp.: +80 °C / +176 °F
Contact
RC-Network
25 VA
C (µF) R (Ω)
0,022 1
0,0047 22
0,001 120
STAUFF Level-Temperature Switches SLTS are available
with other electrical functions on request.
ƒƒ 1 NPT and others availble on request
ƒƒ max. 115 Volt switching (for thread N16 only)
Contact
Due to their design Reed contacts have a very high life
expectancy. However, it is worthwhile to note the following
information.
10 VA
R (Ω)
22
120
470
ƒƒ Suitable for Mineral Oil and HFC fluids,
other fluids on request
ƒƒ Either 1 or 2 level contacts available
ƒƒ 1 integrated temperature sensor (optional)
ƒƒ Standard electrical function:
Level contacts:
Normally closed,
opens with falling level
Temperature contacts: Normally closed,
opens with rising temperature
Options
Contact Life Time
Open contact voltage V
Level contact positions (L2, H) are set as given in the order
code. They can be adjusted individually later on.
Please consider a minimum distance of 40 mm / 1.57 in
between the switching points.
Features
fProcess Connection
G3/4 (standard option)
1 NPT
O
140
158
The STAUFF Level-Temperature Switches (SLTS Series) are
unique in their design and modularity. One of the greatest
advantages is the ability of the end-user to adjust the
switching level. The internal support wire carrying the level
and temperature switches makes it a simple and quick job to
change the level switch position.
75 VA
R (Ω)
1
1
22
C (µF)
1
0,47
0,047
100 VA
R (Ω)
1
1
22
C (µF)
1
0,47
0,1
Electrical Data and Output
ƒƒ Max. current level contact: 0.5 A
ƒƒ Max. current temp. contact: 2.0 A
ƒƒ Contact load level contact: 10 VA
ƒƒ Max. operating voltage: (See ordering code)
ƒƒ Specific gravity of fluid: ≥0,8 kg/dm3
ƒƒ Hysteresis:
+18 °C / +64.4 °F
Protection Rating
ƒƒ IP 65 protection rating: Dust tight and protected
against water jets
www.stauff.comD55
Diagtronics
SLTS 12 - O - H41 - L251 - B12 - G048 - M12
D
Order Codes