Fluid Level Gauge Fluid Level Sensor Temperature Switch Fsa / FSK / Ts
Fluid Level Gauge Fluid Level Sensor Temperature Switch Fsa / FSK / Ts
Fluid Level Gauge Fluid Level Sensor Temperature Switch Fsa / FSK / Ts
1. DESCRIPTION FSA: Range of eleven evenly spaced FSK-2SP: Monitoring of the minimum
1.1. GENERAL sizes. or maximum fluid level.
FSA fluid level gauges, FSK fluid level Visual thermometer with C and F Two additional alternative switching
sensors and TS temperature switches scale. points for size 254 and above.
are designed to monitor and control the Temperature gauge which measures Optional: line markings on inspection
level of operating fluid. the temperature of the operating fluid tube.
The flexible product range means that in the tank in C. Dual scale in C and FSK-V: Switch points can be
many combinations are possible: F available on request. positioned variably, additional
Simple standardised installation alternative switch points possible.
conditions. Switching contact designed as
FSA-IB: shut-off of the fluid to the fluid changing contact, opens or closes at
level gauge via non-return valve. switching level.
Display of the current level by Riser tube made of glass.
simultaneously pressing the upper Optional, 3-pole AMP plug
and lower buttons on the non-return (Super Seal).
valves.
Optional: line markings on inspection
With the optional use of a tube.
thermometer, the current temperature
of the fluid will also be shown. TS: three nominal temperatures
possible: 60 C, 70 C and 80 C.
Certified by Bureau Veritas
(BV approval) and by American Can be easily fitted into the FSA and
Bureau of Shipping (ABS approval). FSK.
FSAR: Fluid level gauge in round Simple, standardised mounting
design with pipe connections on both (FSA/K).
sides. Non-corroding surfaces.
Thanks to the principle of Accessories
communicating vessels, the gauge TFP 100: Temperature sensor with a
can be attached externally even at measurement range of
greater distances. -40 C to +125 C.
FSK: Monitor the fluid level via an Measuring resistor designed as
electrical signal. 4-conductor with standardised
Range of eleven evenly spaced sizes. electrical connection.
Simple standardised installation ABK / ABV: These shut-off elements
conditions. allow the connections to be blocked
Switching contact (sizes 127-381) for maintenance work or for making
designed as optionally normally changes to the display system (FSA/
closed (type O), normally open (type FSK), without any tank draining
C) or changing (type W) contact as required.
changing contact (W) in sizes 076 and
5001000.
Temperature gauge which measures
the temperature of the operating fluid
in the tank in C and F.
Option: line marking on sight tube and
float.
Better visual fluid level monitoring
possible with red float.
E 5.050.17/04.17
421
1.2. FUNCTION ABK 1.3. APPLICATION
FSA This stop cock specially designed for the Fluid level gauges FSA, fluid level
By using the FSA, the fluid level can be FSA/FSK has a plug that is guided in a sensors FSK and temperature switches
easily seen on the outside of the tank. valve casing and that can be turned from TS are used to monitor and control levels
The fluid enters the unit via the lower the outside. Turning it by 90 closes the of operating fluid.
connection bore and is clearly visible in connection opening of the FSA/FSK. Areas of application are for example:
the tube. By selecting the right size, the It is operated by screwdriver, from the Machine tools, system engineering, tanks
particular fluid level can be monitored. side, above or below depending on the for hydraulic, lubricating and cutting oils,
FSK position of the ABK. and gearboxes.
By using the FSK, the fluid level is
monitored via an electrical switching
ABV
signal. This switch signal can be used
for a warning or to control the level. Screwing the adjusting screw deeper
The fluid enters the unit via the lower into the valve casing closes the
connection opening of the FSA/FSK 1.4. NOTES
connection bore and pushes a float up
the tube. The float now shows the level (the screw can be loosened again The upper viscosity limit is 2,000 mm/s.
of the fluid in the tank. If the level of the subsequently). It is not possible to combine a TS
fluid drops again, the float will activate a The screw is adjusted by means of an temperature switch with an FT
switch contact. For the NO switch (type allen key (AF width 3). temperature gauge.
C) the circuit will then be closed, for the To ensure correct functioning, pressure,
NC switch (type O) the circuit will be viscosity and temperature specifications
opened. must be observed.
The special dual switching model (type FSA/FSK
W) offers two possibilities. It can be used In the standard design not suitable for
either to close on contact or to open on use with glycol and fluids containing
contact. glycol the special design SO14 is
TS recommended as a solution variant in
The TS is a very useful additional option such cases.
to the FSA and FSK products. However, FSK
it also has a useful application as a Depending on the fluid level of the tank,
separate accessory for systems. the following switching logic applies for
Once fitted, the temperature sensor the fluid level monitor with NC and NO
of the TS is surrounded by operating contacts.
fluid. When the nominal temperature is
Tank fluid level
reached, a contact opens and the circuit
is broken.
This switching process can be used
either as an alarm or to monitor the
(normally
temperature. closed)
When the temperature of the fluid drops
by approx. 15 K, the circuit closes again.
Tank fluid level
TFP
Based on the principle of voltage drop,
the sensor provides an electrical signal
as a value for the temperature.
(normally
A constant measurement flow is open)
fed to the temperature sensor. The
voltage change is roughly proportional
to the change in resistance caused In each case the switching logic of the
by the temperature the higher the fluid level sensor starts with a full tank.
temperature, the greater the resistance. For the NC version the switching contact
Measurement errors caused by longer opens when the fluid level drops below
feed lines are avoided by using the the switching level. Correspondingly, in
4-conductor connection. the NO version, the switching contact
closes when the fluid level drops below
the switching level.
E 5.050.17/04.17
422
2. TECHNICAL 2.1.2 Model code for FSA FSA 0762.X/FT200/12 ...
CHARACTERISTICS (also order example)
2.1. GENERAL Designation
2.1.1 Designation and Symbol FSA = fluid level gauge
Nominal size ( bolt centre spacing)
Fluid level gauge FSA 076; 127; 176; 254; 381
Seal material
1 = NBR (Perbunan)
2 = FKM (Viton)
5 = EPDM (on request)
Series
(specified by manufacturer)
Additional thermometer function
= no additional function
T = thermometer in display tube
FF = prepared for temperature probe
FT 100 = temperature probe 100 mm
FT 200 = temperature probe 200 mm
Fluid level sensor FSK FT 300 = temperature probe 300 mm
TS 60 = temperature switch nominal temperature 60 C
TS 70 = temperature switch nominal temperature 70 C
TS 80 = temperature switch nominal temperature 80 C
TFP 100 = temperature probe -40 C to +125 C
Installation conditions (Banjo bolt thread)
12 = M12 (standard)
O - N/C contact 10 = M10 (not on TS)
Special designs
SO2 = with glass tube (round design), aluminium connectors
SO7 = frame, fastening bolts and nuts made from stainless steel*
SO8 = fastening bolts and nuts made from stainless steel*
SO14 = with glass tube, plastic connectors (PA)
SO19 = with green hollow ball, no contrast washer
SO32 = with glass tube (round design), aluminium connectors;
frame, fastening bolts and nuts made from stainless steel*
C - N/O contact SO65 = FSA standard, but without fastening bolts or sealing washers
SO67 = FSA standard, but without sealing washers
SO79 = with side viewing window
* only for size M12
423
2.1.4 Model code for FSA 500-1000 FSA-1000-2.0/-/12...19...
(also order example)
Designation
FSA = fluid level gauge
Nominal size ( bolt centre spacing)
500; 600; 700; 800; 900; 1000
Seal material
1 = NBR (Perbunan)
2 = FKM (Viton)
Design of riser tube
0 = round
Additional thermometer function
= no additional function
FT = temperature probe
Installation conditions (Banjo bolt thread)
12 = M12 (standard)
Tank seal
... = gasket (no entry required)
OR = O-ring
Diameter of riser tube
19 = 19 mm
Special designs
SO2 = with glass tube (round design), aluminium connectors
424
2.1.6 Model code for FSK FSK-127-2.X/O/FT200/12/...
(also order example)
Designation
FSK = Fluid level sensor
Nominal size ( bolt centre spacing)
127; 176; 254; 381
Seal material
2 = FKM (Viton)
Series
(specified by manufacturer)
Switching function
O = normally closed opens at the switching level
C = normally open closes at the switching level
W = changing opens or closes at the switching level (connector Z4 = standard)
Additional thermometer function
= no additional function
FT 100 = thermometer probe 100 mm
FT 200 = thermometer probe 200 mm
FT 300 = thermometer probe 300 mm
TSL 60 = temperature switch nominal temperature 60 C
TSL 70 = temperature switch nominal temperature 70 C
TSL 80 = temperature switch nominal temperature 80 C
TFP 100 = temperature probe -40 C to +125 C
Installation conditions (Banjo bolt thread)
12 = M12 (standard)
10 = M10 (not on TS)
Connector
No details = 3-pole MPM (standard)
Z4 = 4-pole Hirschmann (standard for changing contact)
SEW = 4-pole M12x1 (sensor connector, horizontal)
SO75 = 3-pole MPM, mounted at top (only size 127)
SES = 4-pole M12x1 (sensor connector, vertical)
Form B = special connection for device connector
425
2.1.8 Model code for FSK 500-1000 FSK-1000-1.0/W/- / 122SP19......
(also order example)
Designation
FSK = Fluid level sensor
Nominal size ( bolt centre spacing)
500; 600; 700; 800; 900; 1000
Seal material
1 = NBR (Perbunan)
Series
(determined by manufacturer)
Switching function
W = changing contact, opens or closes at switching level
Additional thermometer function
= no additional function
FT = temperature probe
Installation conditions (Banjo bolt thread)
12 = M12 (standard)
Switch points
1SP = 1 switch point
2SP = 2 switch points (1x minimum, 1x maximum)
Additional switch points on request
Diameter of riser tube
19 = 19 mm
Connector
No details = 3-pole M8x1 male (standard)
Special designs
SO2 = with glass tube (round design), aluminium connectors
426
2.1.10 Type of construction 2.1.14 Flow direction FSK-V
The devices are designed to be mounted Any Housing frame made of stainless steel
directly on to the operating fluid tank.
2.1.15 Ambient temperature Connectors made of aluminium /
2.1.11 Type of connection -20 C to +80 C polyamide
FSA / FSK Riser tube made of glass 19
The device is mounted using two banjo TS / TS-L / TFP
2.1.16 Materials
bolts. The connection bores can be
Housing with temperature sensor,
either threaded holes or through holes FSA / FSK washer and nut in steel (zinc-plated)
(13, 11). Connectors and tube in high quality Plug connections in high quality
FSAR synthetic material synthetic material
The device is mounted via a 12LR pipe Housing frame made from aluminium
connection on both sides, piping clamp (steel or stainless steel on request)
or retaining plate.
Soft seals in Viton (FKM) or Perbunan
TS (NBR)
The temperature switch can be fitted to
the FSA/FSK in place of the lower banjo Bolts, nuts and washers in steel
bolt. (zinc-plated)
Plug connections in high quality
2.1.12 Mounting position synthetic material (FSK)
FSA vertically on the tank wall FSA-IB
FSK vertically on the tank wall Housing frame, bolts and nuts made
(connection plug at bottom of the of stainless steel
tank) Riser tube made of glass 19
TS instead of lower banjo bolt FSAR
M12 (FSA) Frame made of aluminium
TS-L instead of lower banjo bolt Riser tube made of glass or plastic
M12 (FSK) FSA / FSK 500 - 1000
TFP instead of lower banjo bolt Connectors made of aluminium
M12 (FSA/FSK) Float gauge made from NBR
2.1.13 Weight FSK-2SP
FSK076 - 0.22 kg FSK500 - 0.69 kg Connectors made of aluminium /
FSK127 - 0.21 kg FSK600 - 0.79 kg polyamide
FSK176 - 0.23 kg FSK700 - 0.85 kg Frame made of aluminium
FSK254 - 0.26 kg FSK800 - 0.93 kg Riser tube made of glass 19
FSK381 - 0.30 kg FSK900 - 1.00 kg
FSK1000 - 1.14 kg
FSA076 - 0.17 kg FSA500 - 0.68 kg
FSA127 - 0.19 kg FSA600 - 0.75 kg
FSA176 - 0.21 kg FSA700 - 0.84 kg
FSA254 - 0.24 kg FSA800 - 0.92 kg
FSA381 - 0.29 kg FSA900 - 0.99 kg 2.1.17 FSA seal types
FSA1000 - 1.13 kg Flat seal (standard)
TS-... - 0.11 kg
TS-L-... - 0.13 kg
FT 200 - 0.03 kg
FT 300 - 0.04 kg
TFP 100 - 0.20 kg
Quad ring
O-ring
E 5.050.17/04.17
427
2.2. HYDRAULIC DATA
FSK2SP 2.4. ELECTRICAL
2.2.1 Nominal pressure CHARACTERISTICS TS / TS-L
max. 0.5 bar Type W / change over
As delivered, switching point at bottom 2.4.1 Electrical function
2.2.2 Operating fluids activated by magnetic field.
Mineral oil to DIN 51524 Part 1 and 2, N/C contact
water-oil emulsions and synthetic fluids,
such as hydraulic fluids based on
phosphate ester. Size 127, 254, 381
(other fluids on request) Contact assignment bottom top
4 3 4 3
1 1
3 3
2 2 1 2 1 2
4 3
1
2
1 2 1 2
428
3. DIMENSIONS
3.1. FLUID LEVEL GAUGE FSA
M12
27
Tightening
torque
8-0,5 Nm
Tightening torque
8-0,5 Nm
10
Nominal size 381
housing with
strengthening bar
L3
L1
L2
F
34
FSA-IB (with non-return valve)
Colour
black Tightening torque
8-0,5 Nm
Tightening torque
Colour 8-0,5 Nm
red
429
FSAR without fastening nut FSAR with fastening nut
Tightening torque
8-0,5 Nm
430
3.2. FLUID LEVEL SENSOR FSK
FSK standard
Tightening torque
8-0,5 Nm
switching level
approx. 55
Fluid level
18.6 3 6
max. 8
SW18 SW17
37.5
27
M12
Tightening
5
torque
8-0,5 Nm
Liquid level
Top reed switching level
contact
10
Liquid level
L1
L2
L3
switching level
5
F
Bottom reed
contact
(72.5)
2
Connection
44.5
3-pole plug
M8x1
34
4 3-pole connector
M8x1 male
approx. 72
Fluid level
431
FSK 076
45
25.5 5.5
max. 8
34.3
3
20 M12-SW18
M10-SW 16 AF width 17
27
Tightening torque
8-0,5 Nm
108
37
76
Connection
3-pole plug Type W / changing contact
M8x1
31
19.5
3
4
Connection
Switching level
3-pole plug
fluid level
19 1 M8x1
+1
41
FSK plug Z4
Tightening torque
8-0,5 Nm
Size 381
housing with strengthening
bar
switching level
approx. 55
Nominal size = L1 L2 L3
centre distance of bolts [mm] [mm] [mm]
127 88 127 219.5
176 137 176 268.5
254 215 254 346.5
381 342 381 473.5
E 5.050.17/04.17
432
FSK sensor connection SEW-M12x1 horizontal
Tightening torque
8-0,5 Nm
Size 381
housing with strengthening bar
switching level
approx. 55
4-pole connector
M12x1 male
4-pole connector
M12x1 male
Tightening torque
8-0,5 Nm
Size 381
housing with
strengthening bar
switching level
approx. 55
Nominal size = L1 L2 L5 L6
centre distance of bolts [mm] [mm] [mm] [mm]
E 5.050.17/04.17
433
FSK male connection Form B
Tightening torque
8-0,5 Nm
Size 381
housing with
strengthening bar
switching level
approx. 55
fitting dimension
approx. 65
Nominal size = L1 L2 L7
centre distance of bolts [mm] [mm] [mm]
127 88 127 203
176 137 176 252
254 215 254 330
381 342 381 457
Fluid level
top
reed
contact
black Connection
5-pole plug NG 381
approx. S
Fluid level
red
bottom
reed
contact
Connector not
supplied
Tightening torque
8-0,5 Nm
Fitting dimension
approx. 57
Size = L1 L2 L3 N Approx. S
Type centre distance of bolts [mm] [mm] [mm] [mm] [mm]
E 5.050.17/04.17
434
FSK with variable switch points
switch level MAX
approx. 26-1
SW 18
liquid level
Colour black
Tightening torque
8-0,5 Nm
Top reed
contact
adjustable
mounted on right
Size 381
housing with
strengthening
bar
Alignment of reed contact
(fluid level decreasing)
Liquid level
Bottom reed switching level
contact
adjustable
Connection
Colour red 3-pole plug Tightening torque
8-0,5 Nm
application
435
FSK with temperature switch TS-L 4. SPARE PARTS
4.1. SEAL KIT
Tightening
torque
8-0,5 Nm
3.4. ACCESSORIES
27
M12
M12x1
M18x1
1,5
4-pole connector
23,5 48
M12x1 / M18x1
142
ABK 77
max. 8 63
8 SW18
SW19 Seal kit Order
M12
1.6
M12
no.= Part
number
23
Installation requirement
Sealing nut
SW22
Tightening min. 3 FSA - 76 - 381 - 1.X /- /12 NBR 704 616
Tightening torque
M12
NOTICE
The information in this brochure relates
to the operating conditions and
Open position applications described.
switching travel
90 For applications and operating
conditions not described, please contact
Closed position the relevant technical department.
Users bear the responsibility in all cases
ABV for determining the products suitability
72 in the specific application. Quantified
max. 8
SW22
50
8 SW18
values for product characteristics are
average values for a new product that
M12
X (2 : 1)
M12
SW18
Tightening
torque
Tank
8-0,5 Nm
SW03
HYDAC Accessories GmbH
Hirschbachstr. 2
E 5.050.17/04.17
66280 Sulzbach/Saar
Tel.: +49 (0)6897 - 509-01
Fax: +49 (0)6897 - 509-1009
Internet: www.hydac.com
E-Mail: info@hydac.com
436
E 5.050.17/04.17
437