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APG
Thank You
Thanks for purchasing a Series FS-500 Float Switch from us! We appreciate your business and
your trust. Please take a moment to familiarize yourself with the product and this manual before
installation. If you have any questions, at any time, don’t hesitate to call us at 888-525-7300.
Stainless Steel Horizontal Float Switch
Installation Guide
NOTE: Scan the appropriate QR code below to see the datasheet with full specs on your
tablet or smartphone. Or visit www.apgsensors.com/support to nd it on our website.
FS-500 Datasheet (Doc #9005610)
Table of Contents
1.Description
2. How To Read Your Label
3. Warranty
Description
1
Series FS-500 Stainless Steel Horizontal Float Switches are durable oat switches with a wide range
of uses. They are compact, feature all stainless steel wetted materials, and carry CSA and NSF 169
certications. This makes the Series FS-500 an easy choice for OEM, water and wastewater, and
chemical applications. All FS-500 switches are made in the USA.
4. Installation Instructions
5. Dimensions
6. Reversing Switch Operation
(NO/NC)
7. General Care and Notes
8. Repair Information
9. Removal Instructions
Series FS-500
R
Automation Products Group, Inc.
1025 W 1700 N Logan, UT 84321
www.apgsensors.com | phone: 888-525-7300 | email: [email protected]
Warranty
3
This product is covered by APG’s warranty to be free from defects in material and workmanship
under normal use and service of the product for 24 months. For a full explanation of our Warranty,
please visit https://www.apgsensors.com/about-us/terms-conditions. Contact Technical Support to
receive a Return Material Authorization before shipping your product back.
Doc #9005611 Rev A
Part #200320
FS-500 switches should be installed in an area--indoors or outdoors--which meets the following
conditions:
• Ambient temperature between -40°F and 368°F (-40°C to 187°C); up to 500°F (260°C) for HT
• Process pressure 300 psi (20.7 bar) or less; 100 psi (6.9 bar) or less for P58 tting
• Relative humidity up to 100%
• Altitude up to 2000 meters (6560 feet)
• No chemicals corrosive to stainless steel (such as NH
How To Read Your Label
2
Each label comes with a full model number, a part number, and a serial number. The model
number for the Series FS-500 Float Switch will look something like this:
SAMPLE: FS-500-HT-M1-M1-0.6-P1P1-48
The model number correlates with all the congurable options and tells you exactly what you have.
Compare the model number to the options on the datasheet to identify your exact conguration.
You can also call us with the model, part, or the serial number and we can help you.
, SO2, Cl2, etc.)
3
Scan the QR code below to read the full explanation of our Warranty on your tablet or smartphone.
Installation Instructions
4
Installing your horizontal oat switch is easy if you follow a few simple steps:
• Appply thread tape to tapered threads
• Insert the threads into the mounting hole and begin to turn by hand.
• Use an appropriately sized wrench on the hex nut to completely tighten the threads.
• Connect the switch wires to your control system.
• Equipment must be grounded through nal installation.
• Adequate overcurrent protection must be provided at the supply.
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Dimensions
5
1/4" NPT
1/2" NPT
1/2" NPT
7/8" Hex nut
1/2" NPT
6.02"
[152.9mm]
5.38"
[136.6mm]
5"
2.22"
[56.5mm]
[127.0mm]
0.58"
[14.9mm]
0.83"
[21.1mm]
FS-500...P1P0 (closed)
0.71"
°
[18.0mm]
0
3
[100.9mm]
4.80"
[122.0mm]
5.18"
[131.7mm]
6.01"
[152.8mm]
3.97"
3.58"
[91.1mm]
1.94"
[49.4mm]
2.33"
Switch Operation Orientation (NO/NC)
6
Series FS-500 switches are closed when the oat arm is level, and open when the oat arm is tilted.
• For Normally Open operation (high-level alarm), install switch with oat arm above stationary
0.62"
[15.9mm]
arm.
• For Normally Closed operation (low-level alarm), install with oat arm below stationary arm.
General Care and Notes
7
Your oat switch is very low maintenance and will need little care, as long as it was installed
correctly. However, in general, you should:
• Keep the oat arm and support arm generally clean.
• Avoid applications for which the switch was not designed, such as contact with incompatible
corrosive chemicals, or other damaging environments.
[59.3mm]
• Inspect the threads whenever you remove the switch from duty or change its location.
See FS-500 Datasheet (Document #9005610) for the following specications:
• Specic Gravity
• Actuation Angle and Hysteresis
• Electrical power rating, voltage ranges with frequencies and currents
• Full Hazardous Location ratings statements
0.92"
[23.3mm]
3/4" Hex nut
FS-500...P1P1 (open)
4.25"
[108.0mm]
2.31"
[58.6mm]
11/16" Flats
Silicon Gasket
1/2 - 13 Threads
FS-500...P58 (closed)
0.68"
[17.3mm]
°
0
3
0.5"
[12.7mm]
0.92"
[23.3mm]
4.15"
[105.4mm]
FS-500...P58 (open)
1.94"
[49.4mm]
0.31"
[7.9mm]
0.62"
[15.9mm]
2.17"
[55.2mm]
Repair Information
8
If your oat switch needs repair, contact us via email, phone, or on-line chat on our website. We will
issue you an RMA number with instructions.
• Phone: 888-525-7300
• Email: [email protected]
• Online chat at www.apgsensors.com
Removal Instructions
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Removing your oat switch from service must be done with care. It’s easy to damage your switch if
you are not careful to follow these guidelines:
• Make sure the liquid is well below the level of the switch. Follow any and all procedures for
safely isolating any media contained inside the line or vessel.
• Disconnect wires to switch.
• Loosen the switch with an appropriately sized wrench.
• Twist switch until completely free of threads.
• Pull wires out through mounting.
• Store your switch in a dry place, at a temperature between -40° F and 180° F.
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