APG FLX Operating Manual

PRODUCTS

AUT OMATION

Operator’s Manual

GROUP, INC.

FLX

Series

Magnetic Float Sensors

9003283

Rev. C4, 10/09

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Automation Products Group, Inc.

FLX Series Rev. C4, 10/09

Table of Contents

Warranty ......................................................................................... 3

Description...................................................................................... 4

Installation ................................................................................... 5-6

Wiring...........................................................................................7-8

Circuit Pr otection ........................................................................... 9

Inspection & Maintenance ............................................................ 10

Technical Notes............................................................................. 10

Specifications ................................................................................ 11

Certificate of Compliance ....................................................... 12-14

Automation Products Group, Inc.

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Rev. C4, 10/09 FLX Series

• Warranty and W arranty Restrictions

APG warrants its products to be free from defects of material and workmanship
and will, without charge, replace or repair any equipment found defective upon
inspection at its factory, provided the equipment has been returned,
transportation prepaid, within 24 months from date of shipment from factory .

THE FOREGOING WARRANTY IS IN LIEU OF AND EXCLUDES ALL OTHER
WARRANTIES NOT EXPRESSL Y SET FOR TH HEREIN, WHETHER
EXPRESSED OR IMPLIED BY OPERATION OF LAW OR OTHER WISE
INCLUDING BUT NOT LIMITED T O ANY IMPLIED WARRANTIES OF
MERCHANT ABILITY OR FITNESS FOR A PAR TICULAR PURPOSE.

No representation or warranty, express or implied, made by any sales
representative, distributor, or other agent or representative of APG which is not
specifically set forth herein shall be binding upon APG. APG shall not be liable
for any incidental or consequential damages, losses or expenses directly or
indirectly arising from the sale, handling, improper application or use of the
goods or from any other cause relating thereto and APG’s liability hereunder, in
any case, is expressly limited to the repair or replacement (at APG’s option) of
goods.

Warranty is specifically at the factory. Any on site service will be provided at
the sole expense of the Purchaser at standard field service rates.

All associated equipment must be protected by properly rated electronic/
electrical protection devices. APG shall not be liable for any damage due to
improper engineering or installation by the purchaser or third parties. Proper
installation, operation and maintenance of the product becomes the
responsibility of the user upon receipt of the product.

Returns and allowances must be authorized by APG in advance. APG will
assign a Return Material Authorization (RMA) number which must appear on
all related papers and the outside of the shipping carton. All returns are subject
to the final review by APG. Returns are subject to restocking charges as
determined by APG’s “Credit Return Policy”.

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

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3

FLX Series Rev. C4, 10/09

Permanent Magnet

Float Travel-Stop

Float

Stem

Reed Switch

• Description

The FLX series instruments contain reed switches in the stem and permanent
magnets in the floats. As the float rises or falls with the level of the liquid, the
magnet inside the float act on the reed switch inside the stem to provide the
SPST switching action.

• Handling of the Explosion-Proof FLX Series

The FLX is rated CSA Class 1 Division 1; Groups C, D for explosive
environments. All repairs and adjustments of the FLX must be made by the
factory. To modify, disassemble, or alter the FLX on site is strictly prohibited.
Do not loosen any joints, with the exception of the housing cover for electrical
connection.

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Rev. C4, 10/09 FLX Series

• Installation

- Unpacking -

When unpacking the instrument, exercise care not to subject the instrument to
mechanical shock. After unpacking, visually inspect the instrument for
damage.

- Environment -

The FLX series sensors should be installed indoors or outdoors in an area
which meets the following conditions:

1. The ambient temperature does not exceed -400F to +1850F (-400C to 850C).
NOTE: It is recommended that a sun shield be installed over the housing if
exposed to direct sunlight.

2. The medium temperature does not exceed -400F to +1850F (-400C to
850C).

3. Relative humidity up to 100%

4. Pollution Degree 2

5. Measurment Category II

6. Altitude 2000 m or less.

7. Locate the sensor away from strong magnetic fields such as those
produced by motors, transformers, solenoid valves, etc.

8. The medium is free from metallic substances and other foreign matter.

9. No corrosive gases such as NH3, SO2, Cl2, etc.

10. No excessive vibration

11. Ample space for maintenance and inspection.

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FLX Series Rev. C4, 10/09

• Installation

- Location -

Do not locate the FLX series sensor near inlets/outlets.
If there is surface wave action, then use a time-delay relay or stilling tube. If a
stilling tube is used, drill vent holes in the tube and use a spacer to assure the
float has free travel inside the tube.

Wave action may cause switch to chatter. Use a stilling tube or time-delay

relay to prevent switch chatter.

- Mounting -

The FLX can be mounted up to 300 from vertical.

1. Flange Mounting
Provide the compatible mating flange on the tank and install using a suitable
gasket.

2. Plug Mounting
Provide the compatible female boss on the tank and install the FLX with a
suitable gasket, O-ring, or thread tape.

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Rev. C4, 10/09 FLX Series

• Wiring

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FLX Series Rev. C4, 10/09

L1

L2

L3

L4

BlackBlack White White Red Red Green Green

Wiring Color

L1

L1
L2
L3

L4
L5

L6
L7

L2

L3 L4 L5

L6

L7 Com.

Blk x 2
Blk x 2
Blk x 2
Blk x 2

Black
Black
Black

Wh x 2
Wh x 2
Wh x 2

White
White
White

Red x 2
Red x 2

Red
Red
Red

Grn x 2

Green
Green
Green

Yellow
Yellow
Yellow

Brown
Brown

Grey
Grey
Grey

Blue

Number
of
Levels

L1 L2 L3 L4 L5 L6 L7

Common

Black White Red Green GreyBlueBrownYellow

• Wiring

- Wiring for 1 to 4 switches

- Wiring for greater than 4 switches

8

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Automation Products Group, Inc.

Rev. C4, 10/09 FLX Series

L

C

R

E

C = I
R = Approx.

10 x I (I + 50/E)

E

Protecting Circuit Using CR

Protecting Circuit Using Varistor

Protecting Circuit Using Diode

2

/10 (uF)

• Circuit Protection

W ARNING!

DO NOT EXCEED CONT ACT RA TINGS! When an inductive load is used
(e.g. a motor, a coil, or an electromagnetic relay), a back electromotive
force of several hundred volts (energy stored in the inductance) arises
when the contacts are opened. This results in considerable decrease in
contact life. The same result arises even when a resistive load is used
with a high voltage or a large current. The figures below show circuits for
protecting the reed switch(s) from the back electromotive force.

Code A & B Switches

Max. contact capacity 70 VA AC,
Max. switching current 220 VAC 0.5 A, 120 VDC 0.5 A

Code C Switches

Max. contact capacity 110 VA AC,
Max. switching current 220 VAC 0.5 A, 115 VDC 0.5 A

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Automation Products Group, Inc.

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FLX Series Rev. C4, 10/09

• Inspection and Maintenance

Periodic inspection is necessary to keep your FLX unit in good working
order.

CAUTION! Do not remove the housing cover until the atmosphere
is determined to be safe, and the power supplied to the unit is
turned off.

1. Keep the sensor clean.

Never leave the housing cover off. If the cover becomes

damaged or is misplaced, order a replacement immediately .

If sediment or other foreign matter is trapped between the stem

and the float, detection errors may be caused. Keep the float and

stem clean.

2. Inspect the switches and terminals.

• T echnical Notes

1. The float travel stop settings are based on how the magnetic field
influences the reed switch. Normally it is not necessary to move the
stop. If the stops are moved, check the switch action for float overrun.

2. Normally Open (NO) (switch closes as level rises) and Normally Closed
(NC) (switch closes as level falls).

Automation Products Group, Inc.

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APG...Providing tailored solutions for measurement applications

Tel: [phone] • Fax: [phone] • www .apgsensors.com • [e-mail]

Rev. C4, 10/09 FLX Series

• FLX Specifications

Maximum Number Switching Points: 7

Resolution: +/- 1/16” (2mm)

Field Adjustable Actuation Levels: No

Maximum Length: 153 in.

Process Temperature: Class 1 Div. 2 Applications:

-400 to +1850F (-400 to +850C)

Class 1 Div . 1 Applications:

-400 to +1400F (-400 to +400C)

Housing Material: Die Cast

Aluminium

CSA Rating: Class 1 Div . 1

Groups C, D

Housing Rating: NEMA 4

Contact Rating:

Code A & B Switch

Max. contact capacity: 70 V A AC,
Max. switching current: 220 V AC 0.5 A, 120 VDC 0.5 A

Code C Switch

Max. contact capacity: 110 VA AC,
Max. switching current: 220 V AC 0.5 A, 115 VDC 0.5 A

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

Tel: [phone] • Fax: [phone] • www .apgsensors.com • [e-mail]

11

FLX Series Rev. C4, 10/09

12

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

Tel: [phone] • Fax: [phone] • www .apgsensors.com • [e-mail]

Rev. C4, 10/09 FLX Series

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

Tel: [phone] • Fax: [phone] • www .apgsensors.com • [e-mail]

13

FLX Series Rev. C4, 10/09

14

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

Tel: [phone] • Fax: [phone] • www .apgsensors.com • [e-mail]

Rev. C4, 10/09 FLX Series

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

Tel: [phone] • Fax: [phone] • www .apgsensors.com • [e-mail]

15

AUT OMATION

APG...Providing tailored solutions

for measurement applications

Automation Products Group, Inc.

T el: 1/888/525-7300
Fax: [phone]

e-mail: [e-mail]

www.apgsensors.com

GROUP, INC.

1/435/753-7300

PRODUCTS

Automation Products Group, Inc.

1025 W. 1700 N.

Logan, UT 84321