Siemens Milltronics Tilt Switch User manual

Instruction Manual September 2004
MILLTRONICS
tilt switch
Process Instruments M. R. Štefánika 175/45, 017 01 Považská Bystrica
tel./fax: [phone], e-mail: proi[email protected]

© Siemens Milltronics Process Instruments Inc. 2004
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.
Copyright Siemens Milltronics Process
Instruments Inc. 2004. All Rights Reserved
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

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: [phone] Fax: [phone]
Email: [email protected]
Siemens Milltronics Process Instruments Inc. 2004
Subject to change without prior notice
Printed in Canada