OLT Series
Trogamid optical liquid level switches
FEATURES
· Solid state technology,
no moving parts
· Miniature size, easy to install
· Basic, TTL compatibleor transistor
output versions
· 10, 250 or 500 mA output current
· Trogamid housings
· High media compatibility
· Fast response, electrically robust
WETTED MATERIALS
Tip and housing: Trogamid
SPECIFICATIONS
Maximum ratings
Supply voltage
OLT01...
OLT25X...
OLT25U...
OLT50...
Supply current
OLT01..., OLT25...
OLT50...
Output current
OLT01...*
OLT25...
OLT50...
Operating temperature range
OLT01..., OLT50...
OLT25...
Pressure range
OLT...F
all others
Protection class
5...12 V
5...16 V
10...28 V
10...40 V
ELECTRICAL CONNECTION
Red
+V
S
Green Output
15 mA
25 mA
Blue
10 mA
250 mA
500 mA
GND
-25 to 80°C
-40 to 125°C
20 bar
7 bar
IP 67
Note:
For basic sensor
versions (OLT01B...)
suitable resistors have
to be selected.
See details on page 3.
* 10 mA sink current, source current depends on V
S
and R
L
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OLT Series
Trogamid optical liquid level switches
PERFORMANCE CHARACTERISTICS
Characteristics
Repeatability
Hysteresis (depending on liquid)
Response time rising liquid
Response time falling liquid (ethanol)
Min.
Typ.
Max.
±1
1
50
1
Unit
mm
µs
s
OUTLINE DRAWING
M10 thread
(Housing type OLT...F...)
18.70
16.70
4
Ø 12
mass:
5 g
M10 x 1.0
Ø 10 +0.10
dimensions in mm
M12 thread short
(Housing type OLT...K...)
19.40
14.70
6.95 4
19
mass:
6 g
Ø 10.40
dimensions in mm
M12 x 1.0
29.70
14.70
6.95 4
M12 thread long
(Housing type OLT...L...)
19
Ø 10.40
mass:
10 g
M12 x 1.0
dimensions in mm
Note:
All OLT... devices are supplied with lead wires. The wire lengths are
200 mm -0, +30 mm measured from the back of the housing.
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OLT Series
Trogamid optical liquid level switches
ELECTRICAL CONNECTION (cont.)
Basic
Red
R
LED
Blue
GND
Green
+V
S
R
P
Output
Note:
Customer has to select suitable resistors for chosen supply voltage. Pull-up resistor
R
P
could be e.g. 10 kΩ depending on desired output. Forward voltage of LED is 1.3 V
and LED current should be 10 mA (depending on application liquid).
R
LED
can be calculated as follows (e.g. for V
S
=12 V):
R
LED
=
( V
S
−
1.3) V 12
−
1.3
=
=
1070
Ω ≈
1.1 k
Ω
10 mA
0.01
TTL compatible (high in air)
TTL compatible (low in air)
Red
+V
S
4.7
Red
+V
S
Green Output
GND
Green Output
GND
Blue
Blue
Push-Pull (current sinking and sourcing)
Red
+V
S
R
L
R
L
Green Output
GND
Blue
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OLT Series
Trogamid optical liquid level switches
ORDERING INFORMATION
Basic and TTL compatible output types
Output
Series
Current
Options
OLT
01B :
01T:
Type
Function
0:
Low i n ai r
F:
M10 thread
K:
M12 thread short
3:
3 wire
4:
4 wire*
* on request,
MOQ may apply
Housing type
10 mA basic*
Termination
10 mA TTL compatible
1:
High in air
* Low in air only
Example:
OLT
01T
0
F
3
Transistor output types
Output
Series
Current
Options
OLT
25X :
25U :
50U :
Type
(V
S
= 5...16 V)
Housing type
Function
0:
Low i n ai r
1:
High in air
L:
M12 thread long
250 mA Push-Pull
250 mA Push-Pull
(V
S
= 10...28 V)
Termination
3:
3 wire
4:
4 wire*
500 mA Push-Pull
* on request,
MOQ may apply
Example:
OLT
50U
0
L
3
Accessories (please order separately):
·
Nuts, available in Plastic, Nickel Plated Brass or Stainless Steel
·
Washers, available in VAMAC (for high temperature) and Nitrile (for standard temperature)
Note: Custom specific options are widely available!
Please contact your nearest Sensortechnics sales office for further information.
Sensortechnics reserves the right to make changes to any products herein. Sensortechnics does not assume any liability arising out of the
application or use of any product or circuit described herein, neither does it convey any license under its patent rights nor the rights of others.
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