Siemens 7ml12011ef00 Bedienungsanleitung

Instruction Manual February 2008

LEVEL TRANSMITTER

the probe

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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.

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.

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 European Authorized Representative

at the following address:

Technical Publications Siemens AG

Siemens Milltronics Process Instruments Inc. Industry Sector

1954 Technology Drive, P.O. Box 4225 76181 Karlsruhe

Peterborough, Ontario, Canada, K9J 7B1 Deutschland

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.

7ML19985GD61 The Probe – INSTRUCTION MANUAL Page 1

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Introduction

The Probe is an ultrasonic level monitor combining sensor and electronics in a single package. It is

designed to measure liquid levels in closed vessels. The sensor is PVDF or ETFE, allowing The Probe

to be used in a wide variety of industries. The optional sanitary version affords quick removal and

ease of cleaning as demanded by the food, beverage and pharmaceutical industries.

The sensor houses the ultrasonic transducer and temperature sensing element. The Probe emits a

series of ultrasonic pulses from the transducer. Each pulse is reflected as an echo from the material

and sensed by the transducer. The echo is processed by The Probe using Milltronic's proven `Sonic

Intelligence' techniques. Filtering is applied to help discriminate between the true echo from the

material, and false echoes from acoustical and electrical noises and agitator blades in motion. The

time for the pulse to travel to the material and back is temperature compensated and then converted

into distance for display, mA output and relay actuation.

Installation

Environmental

The Probe should be mounted in an area that is within the temperature range specified and that is

suitable to the housing rating and materials of construction. The front lid should be accessible to

allow programming, wiring and display viewing.

It is advisable to keep The Probe away from high voltage or current runs, contactors and SCR control

drives.

Location

Notes:

• 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.

• The Probe is to be used only in the manner outlined in this instruction manual.

Locate The Probe so that

it will have a clear sound

path perpendicular to the

liquid surface

The Probe's sound path

should not intersect the fill

path rough walls, seams,

rungs, etc

sanitary

ferrule

pipe

rungs

seams

fill

Page 2 The Probe – INSTRUCTION MANUAL 7ML19985GD61

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Mounting

Threaded

Flange Adapter (optional)

Sanitary

Note: Mount The Probe so that the face of the sensor is at least 25 cm above the highest

anticipated level.

The Probe is available in three thread types:

2" NPT, 2" BSP or PF2.

Note: Before inserting The Probe into its

mounting hole, ensure that the threads are of

the same type to avoid damaging The Probe

threads.

hinged lid

117 mm

(4.6F")

cable entry

’knock out’

87 mm

(3.4") ø

61 mm

(2.4")

7 mm

(0.3") 84 mm

(3.3") max.

279 mm

(11")

electronics

mounting

thread

sensor

53 mm

(2.1")

ø max.

mounting

thread

74mm

(2.9")

The Probe

optional

flange

adapter

The Probe can be fitted with the optional 75 mm

(3") flange adapter for mating to 3" ANSI, DIN

65PN10 and JIS 10K3B flanges.

hinged lid

117 mm

(4.6")

cable entry

’knock out’

87 mm

(3.4") ø

61 mm

(2.4")

7 mm

(0.3") 84 mm

(3.3") max.

electronics

mounting

thread

sensor

53 mm

(2.1")

ø max.

279 mm

(11")

76 mm

(2.9")

integral

sealing ring

Notes:• Mount The Probe so that the face of

the sensor is at least 25 cm above

the highest anticipated level.

• The Sanitary Probe 3A approval is

for chemical clean-in-place

applications to 60 °C (140 °F) only.

Ensure your cleaning chemicals are

compatible with PVDF.

Sanitary Ferrule,4" FDA Approved

(US Food and Drug Administration)

119 mm (4.68")

97 mm (3.83")

dimensions are approximate

The Probe

clamp

adjusting

wing nut

ferrule

tank

• mount The Probe onto the top of

the tank’s sanitary ferrule

• secure mating by surrounding

the joint with the clamp

• tighten adjusting wing nut

Note: Inside of sanitary

ferrule must be smooth, free of

burrs, seams or ridges.

7ML19985GD61 The Probe – INSTRUCTION MANUAL Page 3

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Interconnection

Operation

Start Up

Notes:• Installation shall only be performed by qualified personnel and in accordance with

local governing regulations.

• Separate cables and conduits may be required to conform to standard instrumentation

wiring practices, or electrical codes.

Note: Non-metallic enclosure does not provide grounding between conduit connections. The use

of approved watertight conduit hubs/glands is required for Type 4X / NEMA 4X / IP65 (outdoor)

applications.

A.With lid closed, remove cable entry ’knock out’ on either side

as required.

B.Open lid by loosening the lid screw.

C. Run cable to The Probe.

D.Connect mA output, power supply and relay wiring

E. Close lid. Tighten screw to 1.1 to 1.7 N-m (10 to 15 in-lb)

mA Output:

: 4-20mA non-isolated

into 750 ohms max at 24 Vdc

Power Supply

: 18 to 30 Vdc

Connect to protective earth

Relay: dry contact, closed

unpowered or alarm state, refer

to specifictions on page 19

All field wiring must have insulation

suitable for at least 250 V.

dc terminals shall be supplied from a

SELV source in accordance with IEC-

1010-1 Annex H.

program mode

alphanumeric

units

LOE / fault

operation status

’4’ key

’20’ key

• With The Probe correctly installed (or

aimed at a wall 0.25 to 5 m away), apply

power.

• The Probe starts up displaying the

following:

• It then defaults to the Run mode, which is the measurement

reading of the distance from the transducer face to the

material level in the units indicated:

• If the default display differs from that shown, refer to

Operation Status on page 4 .

Page 4 The Probe – INSTRUCTION MANUAL 7ML19985GD61

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Calibration

Calibration: Reference Method

• Adjust the material level (or target) to the desired distance from the sensor face.

• Press the “4” or “20” key (as appropriate) to view the stored distance associated with that mA

output value.

• Press the key a second time to set the new distance reference.

• After viewing or calibrating, Probe operation automatically reverts to the Run mode (6 sec). The

calibration value is referenced from the face of The Probe sensor, in the units displayed.

4 mA calibration

20 mA calibration

Operation Status

The logo will change from full to partial to indicate operation status. After the `Waiting' period, the `?'

icon will appear for an `LOE / FAULT' indication. When a valid echo is again received, a `Good'

indication will resume. Refer to Troubleshooting on page 9 .

proportional span inversely proportional span

high level = 20mA high level = 4 mA

low level = 4 mA low level = 20mA

Press “4”

Press “4” again 4 mA calibration

new 4mA calibration

calibration invalid if

retry

Press “20”

Press “20” again 20 mA calibration

new 20 mA calibration

calibration invalid if

retry

Note: Calibration bypasses the measurement response rate.

The calibration of the mA output may be done such

that its span will be either proportional or inversely

proportional to the material level.

Note: The 4 and 20 mA levels may be calibrated in

any order.

GOOD WAITING LOE / FAULT

The graphic portion of the display gives the user a visual

indication of The Probe's operating status. Viewing the

graphic can assist the user in properly locating and

installing The Probe to achieve optimum performance.

7ML19985GD61 The Probe – INSTRUCTION MANUAL Page 5

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Adjustments

There are several operating adjustments that can be made to The Probe.

• Press the "4" and "20" keys simultaneously until the desired adjustment is obtained. A viewing

sequence of the stored value is automatically initiated.

• During this time, press either the "4" or "20" key to change the value. After viewing or changing,

operation automatically reverts to the Run mode (6 sec).

Calibration, Scrolling Method

The 4 and 20 mA calibration values can be selected where reference levels, either from the material

in the vessel or from a target, cannot be provided. This method can also be used to trim the output

levels obtained by the Reference Method (see page 4).

• To change the stored calibration value, obtain the `c 4' or `c 20' display.

• Press the "20" key to increase or the "4" key to decrease the calibration value.

• After scrolling to the desired value, stop pressing the key. The display automatically reverts to the

Run mode (6 sec).

4 mA calibration

20 mA calibration

4 mA calibration, scrolling alarm

20 mA calibration, scrolling fail-safe

blanking fail-safe timer

speed of response units

4 mA calibration initiated

view stored 4 mA calibration value i.e. 4.50 m

press”20” to increase to new calibration value i.e. 4.60 m

new calibration value

20 mA calibration initiated

view stored 20 mA calibration value

i.e. 0.50 m Note: For faster scrolling, hold the

key depressed during the

calibration adjustment and release

when desired value is obtained.

press “4” to decrease to new calibration

value i.e. 0.45 m

new calibration value

Page 6 The Probe – INSTRUCTION MANUAL 7ML19985GD61

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Blanking

• To change the stored blanking value, obtain the `bL' display.

• Press the "20" key to increase or the "4" key to decrease the blanking value.

• When the display has scrolled to the desired value, stop pressing the key. The display

automatically returns to the Run mode (6 sec).

Speed of Response

The speed of response adjustment allows the user to collectively set a number of operating

parameters.

* = factory setting

3 sec blanking

stored blanking value i.e. 0.25 m

press “20” to increase blanking i.e. 0.36 m Note: For faster scrolling, hold

the key depressed during the

blanking adjustment and release

when desired value is obtained.

press “4” to decrease to desired blanking

value i.e. 0.35 m

6 sec new blanking value

measurement response:

is the limit to which The Probe will be able to keep up with rates of change.

If The Probe measurement cannot keep up with the rate of level change, set the

adjustment from `1' to `2'. If The Probe still cannot keep up with the rate of level

change, set the adjustment option to `3'. Avoid choosing an option that is too fast for

your application.

agitator discrimination: discriminates between agitator blades in motion, and the material (target) surface.

filter: discriminates between false echoes from acoustical and electrical noise and the

material (target) surface.

fail-safe timer:

establishes the `Waiting' period from the time a loss of echo or operating fault

condition starts until the fail-safe default is effected. Adjusting the speed of

response will set the fail-safe timer to the default values in the chart. If a different

response is required, adjust the ‘FSt’ option (see page 13).

SP measurement response agitator discrimination filter fail-safe timer

1* 1 m/min (3.3 ft/min) on on 10 min

25 m/min (16.4 ft/min) on on 3 min

3immediate off off 3 min

40.03 m/min (0.1 ft/min) on on 10 min

The Probe

blanking

Blanking is used to ignore the zone in front of the

transducer where false echoes are at a level that

interfere with the processing of the true echo. It is

measured outward from the sensor face. The minimum

recommended blanking value is 0.25 m (0.82 ft) but can

be increased in order to extend the blanking.

7ML19985GD61 The Probe – INSTRUCTION MANUAL Page 7

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• To change the speed of response, obtain the `SP' display.

• Scroll forward through the options (1-2-3) by pressing the "20" key. Scroll backward through the

options (3-2-1) by pressing the "4" key.

• When the desired option is displayed, stop pressing the key. The display will automatically return

to the Run mode (6 sec).

Alarm

• To change the alarm function or setpoint, obtain the `AL' display.

• Press the "20" key to increase or the "4" key to decrease the setpoint.

• When the display has scrolled to the desired value, stop pressing the key. The display

automatically returns to the Run mode (6 sec).

Fail-Safe

In the event a loss of echo or fault condition exceeds the `Waiting' period (see Speed of Response

on page 6 or Fail-safe Timer below), the ` ? ' icon appears and one of the following fail-safe defaults

is immediately effected.

p = proportional span i = inversely proportional span * = factory default

3 sec speed of response

current option i.e. 1 m/min

press “20” for option 2 i.e. 5 m/min

6 sec option 2 selected

3 sec alarm

stored function i.e. LOE / fault

Press “20” to adjust setpoint i.e. 1.36 m Note: For faster scrolling, hold the

key depressed during the setpoint

adjustment and release when the

desired value is obtained.

Press “4” to decrease to desired setpoint

i.e. 1.35 m

6 sec new alarm value

FLS default mApmAireading

1full 22 4hold

2empty 422 hold

3* hold hold hold hold

The Probe

blanking

alarm zone

alarm

setpoint

hysterisis

The alarm adjustment assigns one of the following

functions to the relay.

O = loss of echo / fault alarm (factory setting)

The relay is energized with the contacts open during

normal operation (see Fail-safe on page).

Ø = process alarm

The non zero value entered becomes the alarm setpoint,

referenced to The Probe's sensor face. The relay de-

energizes and the contacts close when the material is

within the alarm zone. There is a hysterisis equivalent to

5% of the empty calibration distance.

Page 8 The Probe – INSTRUCTION MANUAL 7ML19985GD61

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• To change the fail-safe default obtain the `FLS' display.

• Scroll forward through the options (1-2-3) by pressing the "20" key. Scroll backward through the

options (3-2-1) by pressing the "4" key.

• When the desired option is displayed, stop pressing the key. The display will automatically return

to the Run mode (6 sec).

Fail-Safe Timer

The fail-safe timer allows the user to vary the ‘waiting’ period from the time a loss of echo or

operating fault condition begins, until the fail-safe default is effected. The ‘waiting’ period is

adjustable from 1 to 15 minutes, in 1 minute increments.

The fail-safe timer value will default to settings determined by the speed of response (see page 11).

If a different value is desired, the fail-safe timer should be adjusted

after

the speed of response is

set.

• To change the fail-safe timer, obtain the ‘FSt’ display.

• Increase the ‘waiting’ period by pressing the “20” key, and decrease it by pressing the “4” key,

stopping when the desired value is displayed.

• The display automatically reverts to the Run mode (6 sec).

Units

The units of the measurement reading can be selected as follows:

1 = metres, m (factory setting)

2 = feet, ft

The selected units are also applicable to the `Blanking' and `Alarm' adjustments.

• To change the units obtain the `Un' display.

• Scroll forward through the options ( 1 - 2 ) by pressing the "20" key. Scroll backward through the

options ( 2 - 1 ) by pressing the "4" key.

• When the desired option is displayed, stop pressing the key. The display will automatically return

to the Run mode (6 sec).

3 sec fail-safe

current option i.e. full

Press “20” for option 2 i.e. empty

6 sec option 2 selected

3 sec units

current option i.e. m

Press “20” for option 2 i.e. ft

6 sec option 2 selected

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