Siemens Milltronics Tilt Switch Manuel utilisateur

Instruction Manual September 2004

MILLTRONICS

tilt switch

Process Instruments M. R. Štefánika 175/45, 017 01 Považská Bystrica

tel./fax: 00421 42 432 3946, e-mail: proi[email protected]

Safety Guidelines

Warning notices must be observed to ensure personal safety as well as that of others, and to

protect the product and the connected equipment. These warning notices are accompanied

by a clarification of the level of caution to be observed.

Qualified Personnel

This device/system may only be set up and operated in conjunction with this manual.

Qualified personnel are only authorized to install and operate this equipment in accordance

with established safety practices and standards.

Warning: This product can only function properly and safely if it is correctly transported,

stored, installed, set up, operated, and maintained.

Note: Always use product in accordance with specifications.

Disclaimer of Liability

This document is available in bound version and in

electronic version. We encourage users to

purchase authorized bound manuals, or to view

electronic versions as designed and authored by

Siemens Milltronics Process Instruments Inc.

Siemens Milltronics Process Instruments Inc. will

not be responsible for the contents of partial or

whole reproductions of either bound or electronic

versions.

While we have verified the contents of

this manual for agreement with the

instrumentation described, variations

remain possible. Thus we cannot

guarantee full agreement. The

contents of this manual are regularly

reviewed and corrections are included

in subsequent editions. We welcome

all suggestions for improvement.

Technical data subject to change.

MILLTRONICS®is a registered trademark of Siemens Milltronics Process Instruments Inc.

Contact SMPI Technical Publications at the following address:

Technical Publications

Siemens Milltronics Process Instruments Inc.

1954 Technology Drive, P.O. Box 4225

Peterborough, Ontario, Canada, K9J 7B1

Email: [email protected]

• For a selection of Siemens Milltronics level measurement manuals, go to:

www. siemens.com/processautomation. Under Process Instrumentation, select Level

Measurement and then go to the manual archive listed under the product family.

• For a selection of Siemens Milltronics weighing manuals, go to:

www. siemens.com/processautomation. Under Weighing Technology, select

Continuous Weighing Systems and then go to the manual archive listed under the

product family.

7ML19985FL01 Tilt Switch Probe – INSTRUCTION MANUAL Page 1

Milltronics Tilt Switch Probe

The Milltronics Tilt Switch probe is an electro-mechanical tilt switch for point level

detection, plugged chute detection, belt tracking alarm, and feed loss detection on

conveyor belts. Tilt switches also provide simple high and low alarm for both dry bulk

solids and liquids.

The rugged, stainless steel encapsulated probe is suspended vertically over a bin or belt,

and the potted switch inside the probe provides a signal when material tilts it through an

angle of more than 17° from vertical in any direction. The switch will remain open until it

returns to an angle of less than 17°. The probe should be mounted so it can be tilted by

the measured material. Do not mount the probe in the path of falling material as this may

bury or damage the probe or cause erratic switching.

Optional extensions are available for specific applications.

Wear Extension: replaceable extension used for level detection on

coarse or abrasive materials, belt tracking and loss of

feed on belt conveyors

Cross Paddle: used in level detection on fine ores or medium bulk

density materials

Flat paddle: used for plugged chute detection

Float: used for level detection of liquids or light density

materials

Specifications

• Switch totally encapsulated mercury switch rated at 30 V DC

maximum

• Switching angle typically 17° from vertical, normally closed

• Minimum operating current 10 mA

• Output single normally closed contact

2A @ 24 V DC

• Impedance typically 5 ohms

• Temperature rating low temperature: -40 to 90 °C (-40 to 194 °F)

high temperature:-40 to 150 °C (-40 to 302 °F)

• Cable low temperature: 6.1 m (20 ft) of type SJO 18-2

high temperature: 1.5 m (5 ft) of 18 AWG, 2 shielded PTFE

• Housing Schedule 80 stainless steel pipe with ½" NPT mounting for

extensions

• Material 304 stainless steel

• Shipping weight 2 kg (4.4 lbs)

•Approval CE

Page 2 Tilt Switch Probe– INSTRUCTION MANUAL 7ML19985FL01

Probe – Outline and Dimensions

Probe Extensions

Tilt Switch

180 mm

(7")

material:

304 stainless steel

½" NPT

(internal thread)

for connection to

optional

extensions

N.C. at angles below 17° off vertical

(typical)

250 mm

(10")

cable:

- low temp: 6 m (20 ft)

std. length

-high temp: 1.5 m (5 ft)

std. length

Schematic

½" NPT

(internal thread)

for connection

to conduit

Wear Cross Paddle

½"NPT

for connection

to probe

150 mm

(6")

material:

304 stainless steel

150 mm (6")

overall

100 mm

(4")

25 mm

(1")

100 mm

(4")

114 mm

(4.5")

dia.

146 mm

(5.75")

approx.

130 mm

(5.13")

130 mm

(5.13")

100 mm

(4")

150 mm

(6")

material:

304 stainless steel

FloatFlat Paddle

material:

304 stainless steel

½" NPT for

connection

to probe

½" NPT

for connection

to probe

½" NPT

for connection

to probe

material:

304 stainless steel

7ML19985FL01 Tilt Switch Probe – INSTRUCTION MANUAL Page 3

Applications

Dry Level Detection

Mounting

• The Tilt Switch Probe should be

suspended by rigid conduit from a

vibration-free support out of the path of

falling material.

• A float, flat paddle or cross paddle

extension should be used with fine

materials. Also use the paddles with

large coarse materials to prevent

trapping the probe in its vertical position

between rocks or in voids.

• Low and intermediate level alarms are

recommended for use with free-flowing

materials, such as dry aggregates,

pellets, or grain.

plugged

chute

detection

high

level

low

level

alarm

intermediate

level alarm

no flow

indication

IQ300IX.fm Page 5 Tuesday, October 2, 2001 1:43 PM

*7ml19985FL01* Rev. 1.0

www.siemens.com/processautomation

Siemens Milltronics Process Instruments Inc.

1954Technology Drive, P.O. Box 4225

Peterborough, ON, Canada K9J 7B1

Tel: (705) 745-2431 Fax: (705) 741-0466

Email: [email protected]

Siemens Milltronics Process Instruments Inc. 2004

Subject to change without prior notice

Printed in Canada

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