APG TLS User Manual

PRODUCTS

AUTOMATION

Operator’s Manual

GROUP, INC.

TLS Series

Cable Suspended Float

Rev. A2, 8/09

Automation Products Group, Inc.

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TLS Series Rev. A2, 8/09

Table of Contents

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

Introduction .................................................................................... 4

Specifications .................................................................................. 5

Principles of Operation................................................................... 6

Installation ...................................................................................... 7

Wiring............................................................................................ 10

Chemical Resistance ..................................................................... 11

2

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Automation Products Group, Inc.

Rev. A2, 8/09 TLS Series

• Warranty and Warranty 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 18 months from date of shipment from factory .

THE FOREGOING WARRANTY IS IN LIEU OF AND EXCLUDES ALL OTHER
WARRANTIES NOT EXPRESSLY SET FORTH 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 P AR 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

TLS Series Rev. A2, 8/09

• Introduction

TLS quick float level switches use reed switches as the detection contact and
are designed for liquid level detection. These level switches are designed for
level detection of drainage water and dirty water, such as factory exhaust. They
are also suitable for slurries and high viscosity liquids.

Only one float is needed for ON/OFF control at both upper and lower limits,
and control hysteresis width is easily adjustable on the spot.

Features

• Designed for dirty water containing floating objects and for high viscosity.

• ON/OFF control at both upper and lower limits is achieved with only one
float.

• The simultaneous quick reverse action of the float does not cause switch
chattering.

• Control width (hysteresis between upper and lower limit set points) is
adjustable on the spot.

• Operates even in flowing liquid.

• Long lifetime due to the employment of a reed switch as the contact.

• Easy installation—just hang it down into the liquid.

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Automation Products Group, Inc.

Rev. A2, 8/09 TLS Series

• Specifications

Operational Versions

TLS-6A: Pump down; 3 ft. differential
TLS-6B: Pump up; 3 ft. differential
TLS-8A: Pump down; 12 ft. differential
TLS-8B: Pump up; 12 ft. differential
TLS-8AK: Pump down; high temp.
TLS-8BK: Pump up; high temp.

Control range:.................(TLS-6) ...... 8 to 39 in. (270-1000 mm)

(TLS-8) ...... 12 to 157 in. (330-4000 mm)

Minimum SG:.................(TLS-6) 0.7

(TLS-8) 0.9

Output contact rating:.....(SPST): 50 VA; 300 V, 0.5 A AC (max.)

(resistive)
Material

Cable: ..........................PVC

Float: ...........................ABS resin

Rope: ...........................PE

Weight:........................painted cast iron

Pressure rating:...............2 bar

Operating temperature: ..(TLS-6; TLS-8) -10°C to 50°C

(TLS-( )K) -10°C to 70°C

Cable length: ..................6 m

Float driver: ....................(TLS-6) ...... 70 x 107 mm

(TLS-8) ...... 83 x 165 mm

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5

TLS Series Rev. A2, 8/09

• Principles of Operation

The reference figure below shows the fixing weight at the middle of the cable
hanging down from the tank top. Just past the fixing weight is a cable with a
flexible, moving tip which moves up and down with the float movement.
Approximately twice the cable flexible length is the ON/OFF control width.

The inside construction of the float is comprised of a stem fixed at the middle
part of float, with the reed switch set inside the stem. Two pieces of ring form
magnet are fixed externally around the stem. Between the two magnets is a seal
weight that moves up and down.

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Automation Products Group, Inc.

Rev. A2, 8/09 TLS Series

• Installation

Unpacking

When unpacking, do not damage the sensor with mechanical shock. After
unpacking, make sure that the products you ordered are complete. If any part
number is missing, wrong or damaged, please contact APG.

Installation

The TLS should be installed in an area that meets the following conditions:

1. T emperature range:
TLS-8 +14 to 122°F (-10 to 50°C)
TLS-8AK +14 to 160°F (-10 to 70°C)

2. Located away from any strong magnetic field

• Located away from drop, splash, or vapor around the lead wire egress

• Liquid should be free from any metallic substances

• Placed in a non-hazardous area

• Maximum liquid depth of 20 meters

• Ample space for maintenance and inspection

Location

Locate the TLS in an area
where it is free to operate
without interference. The swing
distance allowance is measured
from the tip of the float to the
cable holder.

NOTE: Minimum distance from
float to weight is 150 mm.

Automation Products Group, Inc.

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7

TLS Series Rev. A2, 8/09

Assembly of TLS-8

Fixing points are as follows:

TLS-8 differential is from 330 mm to
4000 mm. Set the cable holder in the
center of the differential. The distance
from the cable holder to the float should
be half of the differential.

For example: If differential = 300 mm,
then the cable length should = 150 mm.

NOTE: Hysteresis of differential is ±30
mm

Assembly of TLS-6

Fixing points are as follows:

TLS-6 differential is from 270 mm to 1000 mm. Insert the cable into the cable
holder and tighten the nuts to the wall of container as shown below; or tie the
weight to the cable holder and submerge the weight to the bottom
of the tank.

NOTE: Minimum distance from float to weight is 150 mm.

8

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Automation Products Group, Inc.

Rev. A2, 8/09 TLS Series

Installation

There are many methods that can be used to suspend and fasten the cable.
Typical methods are shown below.

NOTE: Please use caution during installation. Extreme impact may damage
the float. Maximum allowable impact is 10 G.

Automation Products Group, Inc.

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9

TLS Series Rev. A2, 8/09

• Wiring

Wiring should be in accordance with all local codes. We recommend the use
of solderless lugs for connection.

Switch rating (resistive)

AC DC
Maximum capacity 50 VA 50 W
Maximum current 0.5 A 0.5 A
Maximum voltage 300 V 300 V

1. TLS-8
VCTF 2 x 0.75 mm

2

2. TLS-8B
VCTF 2 x 0.75 mm

2

3. TLS-8AK
SPVCTF 2 x 0.75 mm

2

CAUTION! DO NOT EXCEED THE CONT ACT RA TINGS!

1. Overvoltage
Reed switches are not designed for the direct starting of inductive loads such

as motors, contractors, solenoid valves, etc.

2. Overcurrent
Momentary surge current may be produced by switching lamps or stray

capacity from long cable length.

10

APG...Providing tailored solutions for measurement applications

Automation Products Group, Inc.

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

Rev. A2, 8/09 TLS Series

• Chemical Resistance

The ABS covered float and mild PVC jacketed cable are compatible with a
wide range of liquids. However, there are some liquids that will damage the
floats.
ABS may be immediately damaged by the following liquids:

Aromatics (benzene, toluene, xylene)

Esters and Ketones may cause swelling.

PVC should be used with caution in the following:

Oils, especially vegetable oils and fats, tends to absorb by the plasticizer of
mild PVC jacketed cable. Consequently the cable stiffens. The flexibility
decreases as the duration of immersion increases. If necessary, an alternative
hypalon cable is available. The TLS can also be damaged by some chemicals
such as hydrochloric acid, sodium hydroxide, sulfuric acid, etc.

In general, the resistance to damage depends on concentration, duration of
immersion, presence of the suspended solids, temperature, and/or corrosive
gases. Although the TLS is designed for long life, we recommend that they be
replaced at adequate intervals.

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

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

11

AUTOMATION

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

( front cover)