Siemens SITRANS AS100 Bedienungsanleitung

Instruction Manual April 2005

AS 100

sitrans

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.

Unit Repair and Excluded Liability:

• The user is responsible for all changes and repairs made to the device by the user or the user’s

agent.

• All new components are to be provided by Siemens Milltronics Process Instruments Inc.

• Restrict repair to faulty components only.

• Do not reuse faulty components.

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.

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: techpubs.smpi@siemens.com

• 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.

Table of Contents

General Information ...........................................................................................................1

SITRANS AS 100 Sensor ......................................................................................................................1

Features .....................................................................................................................................................1

Specifications ......................................................................................................................2

Outline and Dimensions ....................................................................................................4

Installation ...........................................................................................................................6

Ideal Locations .........................................................................................................................................6

Conditions to Avoid .................................................................................................................................6

Conditions to Consider ...........................................................................................................................6

Mounting .............................................................................................................................7

Temperature Considerations ................................................................................................................8

Interconnection ...................................................................................................................9

SITRANS AS 100 Standard Temperature Version (ST) .................................................................9

Extended Temperature Version (ET) ..................................................................................................9

Analog Output ........................................................................................................................................10

Relative Sensitivity ................................................................................................................................10

Applications ....................................................................................................................... 11

Pneumatic Conveyor ............................................................................................................................11

Screw Conveyor Discharge ................................................................................................................11

Diverter Gate ..........................................................................................................................................11

7ML19985DM02 SITRANS AS 100 – INSTRUCTION MANUAL Page 1

General Information

SITRANS AS 100 Sensor

SITRANS AS 100 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 AS 100 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 AS 100 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.

Features

• non-invasive

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

• analog output

• high and low sensitivity range of operation

Page 2 SITRANS AS 100 – INSTRUCTION MANUAL 7ML19985DM02

Specifications

Model

• standard standard operating temperature range (see below)

• extended extended operating temperature range (see below)

Power

• 20 to 30 V DC

• 18 mA typical

Operating Temperature

• standard1-20 to 80 °C (-4 to 176 °F)

•extended:

-30 to 120 °C (-22 to 248 °F)2or

-40 to 125 °C (-40 to 257 °F)

Relative Sensitivity

• 0.5% / °C of reading, average over the operating range

Output

• analog, 0.08 to 10 V DC nominal, 100 KΩminimum load impedance

Construction

• housing 304 stainless steel

303 stainless steel (hazardous rated version)

• cable standard: 4 m (13 ft) cable, PVC jacketed, 3 twisted pairs, 24 AWG,

shielded

extended: 4 m (13 ft) cable, thermoplastic elastomer jacketed, 6

conductor, 24 AWG conductor, shielded

1. Class II and ATEX II versions available

2. Class II version available

7ML19985DM02 SITRANS AS 100 – INSTRUCTION MANUAL Page 3

Ingress Protection

• IP 68 (waterproof) The IP 68 test was performed by immersing the enclosure in 1.8m of

water for 30 minutes.

Weight

• 0.4 kg (1 lb.)

Approvals

•General CE

• Hazardous Europe: ATEX II 3D

US: FM Class II, Div. 1, Groups E, F, G

Canada: CSA Class II, Div. 1, Groups E, F, G

Page 4 SITRANS AS 100 – INSTRUCTION MANUAL 7ML19985DM02

Outline and Dimensions

SITRANS AS 100 (ST and ET Versions)

SITRANS AS 100 (Class II Rated ST and ET Versions)

8mm

(0.3")

44mm

(1.8")

36mm

(1.4")

17mm

(0.7")

67mm

(2.7")

mounting post, 17A/F

nut and M10 thread

6 x 24 AWG cable

8mm

(0.3") 44mm

(1.8")

36mm

(1.4")

32mm

(1.3")

82mm

(3.2")

mounting post, 17A/F

nut and M10 thread

6 x 24 AWG cable

½" NPT

(CSA and FM approvals)

M20 (ATEX approval)

female conduit fitting

7ML19985DM02 SITRANS AS 100 – INSTRUCTION MANUAL Page 5

Accessories

Extension Tab (optional)

Mounting Disc (optional)

Note: Both Tab and Disc are 304SS.

10mm

(0.4")

85mm

(3.3")

15mm

(0.6")

15mm

(0.6")

bolt hole,

14mm

(0.55")Ø

SITRANS AS 100 mounting hole

M10 thread

30mm

(1.2")

30mm (1.2")Ø

SITRANS AS 100 mounting hole

M10 thread

15mm

(0.6)

Page 6 SITRANS AS 100 – INSTRUCTION MANUAL 7ML19985DM02

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.

Solids Flow Sensing

Good friction between product and

piping. 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.

Recommended Not Recommended

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