Siemens SITRANS AS100 Manuel utilisateur

SITRANS

Acoustic Sensors

SITRANS AS100

Operating Instructions

04/2021

A5E31952194

-AC

Introduction

Installation

Mounting

Connecting

Applications

Specifications

Technical data and

dimensions

Product documentation and

support

Siemens AG

Digital Industries

Postfach 48 48

90026 NÜRNBERG

GERMANY

Document order number: A5E31952194

Ⓟ

04/2021 Subject to change

Legal information

Warning notice system

This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent

damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert

symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are

graded according to the degree of danger.

DANGER

indicates that death or severe personal injury will result if proper precautions are not taken.

WARNING

indicates that death or severe personal injury may result if proper precautions are not taken.

CAUTION

indicates that minor personal injury can result if proper precautions are not taken.

NOTICE

indicates that property damage can result if proper precautions are not taken.

If more than one degree of danger is present, the warning notice representing the highest degree of danger will

be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to

property damage.

Qualified Personnel

The product/system described in this documentation may be operated only by personnel qualified for the specific

task in accordance with the relevant documentation, in particular its warning notices and safety instructions.

Qualified personnel are those who, based on their training and experience, are capable of identifying risks and

avoiding potential hazards when working with these products/systems.

Proper use of Siemens products

Note the following:

WARNING

Siemens products may only be used for the applications described in the catalog and in the relevant technical

documentation. If products and components from other manufacturers are used, these must be recommended

or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and

maintenance are required to ensure that the products operate safely and without any problems. The permissible

ambient conditions must be complied with. The information in the relevant documentation must be observed.

Trademarks

All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication

may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.

Disclaimer of Liability

We have reviewed the contents of this publication to ensure consistency with the hardware and software

described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the

information in this publication is reviewed regularly and any necessary corrections are included in subsequent

editions.

SITRANS AS100

Operating Instructions, 04/2021, A5E31952194-AC 3

Table of contents

1 Introduction ........................................................................................................................................... 4

2 Installation............................................................................................................................................. 5

3 Mounting ............................................................................................................................................... 7

4 Connecting .......................................................................................................................................... 11

5 Applications ......................................................................................................................................... 14

6 Specifications....................................................................................................................................... 18

7 Technical data and dimensions ........................................................................................................... 20

A Product documentation and support................................................................................................... 25

A.1 Product documentation ..................................................................................................... 25

A.2 Technical support .............................................................................................................. 26

Index .................................................................................................................................................... 27

SITRANS AS100

4Operating Instructions, 04/2021, A5E31952194-AC

Introduction

SITRANS AS100 Sensor

SITRANS AS100 is an acoustic sensor for flow detection. It monitors high frequency acoustic

emissions (sound waves) generated by:

•the friction and impact of solids flow in pipes, chutes, and conveyors

•cavitation occurring in pumps, pipes, and valves

•turbulence of gases or liquids leaking through valves and flanges

•friction and jarring of mechanical parts

Acoustic emissions travel readily through solid materials such as metal, but are strongly

attenuated when traveling through air. As such, the Sensor is immune to airborne

interferences and provides a non-invasive method of monitoring process activities.

The sensor can be configured electrically during wiring to operate in either low or high

sensitivity range mode. The high sensitivity range applies where highest signal levels vary up

to 40 dB. The low sensitivity range applies where highest signal levels vary between 28 and

68 dB.

SITRANS AS100 Sensor provides an analog output for use with the Sitrans Control Unit. The

Sensor may be operated independently from the Control Unit by providing an external

supply. The output is fed into a control panel, chart recorder, data logger, or programmable

logic controller with a suitable input.

SITRANS AS100 Sensor is primarily used for solids flow detection. However, this device can be

used in pump cavitation and fluid leak detection, provided sufficient noise levels are

generated.

Note

•

The SITRANS AS100 is to be used only in the manner outlined in this manual

•

This product is intended for use in industrial areas. Operation of this equipment in a

residential area may cause interference to several frequency based communications

Features

•non-invasive

•screw in, bolt on, weld, or bond in place

•analog output

•high and low sensitivity range of operation

SITRANS AS100

5Operating Instructions, 04/2021, A5E31952194-AC

Installation

Ideal Locations

•areas where the acoustic emission levels are highest and most consistent

•where the material impact is greatest

•areas closest to the point of leakage (e.g. valve body)

•closest point to source of cavitation (e.g. pump body)

Conditions to Avoid

•non-metallic surfaces, as these tend to attenuate acoustic emission levels

•pipes with non-metallic liners as these tend to attenuate acoustic emission levels

Conditions to Consider

•joints and interfaces attenuate the acoustic emission levels.

•minimal temperature variation where acoustic emission levels are weak.

•location should provide sufficient response time in alarm or control circuit. e.g. loss of

bearing lubrication, plug chute detection.

Installation

SITRANS AS100

6Operating Instructions, 04/2021, A5E31952194-AC

Solids Flow Sensing

Recommended

Not Recommended

Good friction between product and pip-

ing. Mount Sensor on the upstream side

of gasket for highest level of acoustic

emission activity.

Minimal amount of acoustic emission

activity due to limited friction between

product and

piping.

SITRANS AS100

7Operating Instructions, 04/2021, A5E31952194-AC

Mounting

Note

•

To ensure the most ideal location, test the SITRANS AS100 by clamping the Sensor to the

application, and running a trial period to determine the system's performance. The

acoustic emission level can be monitored by a voltmeter across the analog output. Refer

to Interconnection (Page 11).

•

Coating the contact surfaces with grease enhances the propagation of acoustic emissions

to the Sensor.

Mounting Method

Acoustic Coupling and Sensitivity

Clearance hole

Good

Drill and Tap

Good

Mounting Disc

Good

Extension Tab

Fair

Direct Mounting

Clearance Hole

Drill and Tap

Contact

Insert mounting post

through hole in device be-

ing monitored and fasten

with customer

supplied

washers and nut.

Screw mounting post into

threaded hole in device

being monitored.

Weld or bond mounting

post to device being

moni-

tored. When welding, first

remove the acoustic sensor

from the housing.

Note

To ensure proper coupling, the face of the Sensor nut must be tight to the application

surface.

Mounting

SITRANS AS100

8Operating Instructions, 04/2021, A5E31952194-AC

Accessory Mounting

Extension Tab

Mounting Disc

Screw Sensor into threaded hole of tab, and

fasten onto device being monitored.

Screw Sensor into disc, after welding or

bonding disc onto device being monitored.

Note

•

If welding, weld must be a continuous bead. Tacking does not provide

sufficient acoustical

coupling.

•

Do not arc weld on equipment connected to a SITRANS AS100. Remove the SITRANS

AS100 or disconnect electrically to avoid current flowing through the sensor.

•

If gluing, use Loctite 326 adhesive, or equivalent. Follow manufacturer’s instructions to

ensure proper adhesion.

Mounting

SITRANS AS100

Operating Instructions, 04/2021, A5E31952194-AC 9

Figure 3-1 Cable Gland (optional for use with ATEX II 2GD version)

①

Rubber component

②

Foil Jacket

③

Sleeve

④

Cable with outer jacket

The ATEX II 2GD version is supplied with an approved cable gland. Installation of glands/

conduit must conform to local governing codes.

1. Disassemble the cable gland and discard the plastic membrane inside.

2. Route the cable into the M20 section of the gland and thread it onto the housing.

3. Mark the cable 2” (50 mm) from the entry of the housing then remove the acoustic sensor

from the housing.

4. Remove the outer jacket of the cable from the acoustic sensor to the mark on the cable.

5. Reinstall the acoustic sensor into the housing and route the cable through the M20 section

and into the throat of the rubber component.

6. Peel back the foil jacket (on the cable) over the tapered steel (connected to the rubber

component).

7. Install the sleeve over the tapered steel part, and thread the remaining two parts of the

gland onto the cable.

8. Tighten the assembly to ensure a seal of the gland over the cable with outer jacket.

Mounting

SITRANS AS100

10 Operating Instructions, 04/2021, A5E31952194-AC

Temperature Considerations

WARNING

Temperature at Sensor must not exceed minimum or maximum ratings.

Ensure adequate isolation from hot surfaces

by providing additional spacing.

Tab acts as heat sink.

Note

For standard Temperature range model,

maximum temperature is 80°C.

Note

If the flange temperature is 100°C and the

ambient temperature is 20°C, the Sensor

temperature at the electroni

cs is below the

maximum rating.

*maximum range dependent on model.

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