Elsner elektronik SO250-UI Manual de usuario

SO250-UI

Tank Sensor

Item number 70152

Technical specifications

and installation instructions

Elsner Elektronik GmbH Control and Automation Technology

Sohlengrund 16 | 75395 Ostelsheim | Germany

Tel.: +49 (0) 70 33 / 30 945-0 | Fax: +49 (0) 70 33 / 30 945-20

[email protected] | www.elsner-elektronik.de

Technischer Service: +49 (0) 70 33 / 30 945-250

SO250-UI Tank Sensor | Version 18.08.2015 | Data subject to alteration. Errors subject to correction.

The SO250-UI ultrasound sensor is used to detect the liquid content of tanks and for

distance measurements. Besides applications in areas such as rainwater storage tanks

or heating oil tanks, the sensor can also be used in fish tanks or fountains, as well as for

monitoring the parking distances between heavy goods vehicles. Please follow the

“Instructions for assembly and operation” on page 4.

The distance/content level can be directly read off the display of the output device. The

integrated keyboard allows the tank geometry and data output to be input (Modbus

interface, current output, voltage output and two relay switch outputs). Switching a

relay can additionally trigger an acoustic alarm signal.

Functions:

•Distance measurement

•Content measurement in spherical, rectangular and cylindrical shaped tanks.

Several tanks of the same type set up as a battery

•Current output

•Voltage output

•2 relay switch outputs for automatic filling/drainage and/or overfill/empty

warnings, or for triggering fault warnings

•Modbus interface with configurable address, data transfer rate, parity checking

Technical specifications

Evaluation device

Housing: Plastic

Colour: White

Installation: Series installation on DIN rail

Protection rating: IP 20

Dimensions: approx. 123 x 89 x 61 (W x H x D, mm), 7 width units

Weight: approx. 360 g

Ambient temperature: Operating -5…+45 °C, Storage -25…+70°C

Ambient air humidity: max. 95% rH, avoid condensation

Operating voltage: 230 V AC / 50 Hz

Power consumption: max. 4 W

The product conforms with the provisions of EC guidelines

EMC Directive 2004/108/EC

Low Voltage Directive 2006/95/EC

The following standards and/or technical specifications have been applied:

EN 50491-5-1: 2010

EN 50491-5-2: 2011Air-ultrasound sensor

SO250-UI Tank Sensor | Version 18.08.2015 | Data subject to alteration. Errors subject to correction. 3

Housing: Plastic

Colour: Black

Protection category: IP 52

Chemical resistance: Water, heating oil

Dimensions: Overall diameter approx. 60 mm,

overall sensor head height approx. 45 mm,

thread 1½ inches

Connector cable: RG 58 coaxial cable with BNC plug

10 m length, can be extended to max. 40 m

Total weight: approx. 400 g

Ambient temperature: +0…+40 °C

Measurement range: 12…250 cm

Installation and commissioning

Installation, testing, operational start-up and troubleshooting

should only be performed by an electrician.

DANGER!

Risk to life from live voltage (mains voltage)!

There are unprotected live components within the device.

• National legal regulations are to be followed.

• Ensure that all lines to be assembled are free of voltage and take precautions against

accidental switching on.

• Do not use the device if it is damaged.

• Take the device or system out of service and secure it against unintentional use, if it

can be assumed, that risk-free operation is no longer guaranteed.

The device is only to be used for its intended purpose. Any improper modification or

failure to follow the operating instructions voids any and all warranty and guarantee

claims.

After unpacking the device, check it immediately for possible mechanical damage. If it

has been damaged in transport, inform the supplier immediately.

The device may only be used as a fixed-site installation; that means only when

assembled and after conclusion of all installation and operational start-up tasks and

only in the surroundings designated for it.

Elsner Elektronik is not liable for any changes in norms and standards which may occur

after publication of these operating instructions.

SO250-UI Tank Sensor | Version 18.08.2015 | Data subject to alteration. Errors subject to correction.

Instructions for assembly and operation

Evaluation device:

Must only be installed and operated in dry, indoor spaces.

Avoid condensation.

Ultrasonic probe:

Do not cause any mechanical stress on the front part (rubber)!

The measuring head must be dry:

It must not be washed by liquids!

No condensation, no droplet formation!

The measuring track must be free:

No steam, fog, etc. between the sensor and the measuring surface.

Steam is formed e.g. when a warm fluid is poured into a tank.

The measured surface must be still:

No waves, no vibrations!

SO250-UI Tank Sensor | Version 18.08.2015 | Data subject to alteration. Errors subject to correction. 5

The measuring track is aligned vertical to the sensor surface. The measuring track has

to meet the measuring surface vertically, too.

To avoid wave formation in fluids, the measured area can be separated using a

measuring tube (Ø at least 50 mm). Please note: the measuring area is only calm as

long as the end of the tube is below the surface of the liquid.

Area must not be hermetically

sealed so that the fluid level in

the tube may change.

Loud surrounding noise (e.g. when filling metal tanks) may disrupt the measurement.

Please contact us with any questions regarding the area of application or installation.

90°

Sensor

Measuring

track

Measuring surface

SO250-UI Tank Sensor | Version 18.08.2015 | Data subject to alteration. Errors subject to correction.

Connection

Ensure that the unit is correctly connected. Incorrect connection may lead to the

destruction of the tank sensor or electronic equipment connected to it.

Casing

1 measurement sensor connection, + / shield

2 Current output, Iout /

3 Voltage output, Uout /

4 Modbus interface, A / B /

5 Operating voltage input 230 V AC, L / N

6 Relay output 1 (NO contact), 13 / 14

7 Relay output 2 (NO contact), 23 / 24

All connections are suitable for solid conductors up to 1.5 mm² or fine wire conductors

SO250-UI Tank Sensor | Version 18.08.2015 | Data subject to alteration. Errors subject to correction. 7

Modbus transmission protocol

Applicable protocol: Modbus RTU

SO 250-UI Modbus inquiry string from master

Byte

no.

Variable Explanation

0 Slave address xx

1 Command 04H Read Input Registers

2 Start Address High Byte xx

3 Start Address Low Byte xx

4 Word Count High Byte xx

5 Word Count Low Byte xx

6 CRC High Byte xx

7 CRC Low Byte xx

SO250-UI Modbus output string to master

Byte

no.

Start

Address

Variable Explanation

0 Slave address xx

1 Command 04H Read Input Registers

2 Byte Count xx Master requirement * 2

3 0 Measurement value H

4 1 Measurement value L 0 … 100%

5 2 Relay 1 H

6 3 Relay 1 L 1 = On, 2 = Off

7 4 Relay 2 H

8 5 Relay 2 L 1 = On, 2 = Off

9 6 Error H

10 7 Error L 0 = Measurement value ok, 1 = Error

11 CRC H

12 CRC L

SO250-UI Tank Sensor | Version 18.08.2015 | Data subject to alteration. Errors subject to correction.

Operation

Display main menu

Main menu:

The display indicates the currently measured distance and/or tank content (depending

on the setting). Where no measurement is possible, the message "No echo received!"

appears.

The following settings can be applied using the keypad:

•Distance measurement

•Content measurement

•Interfaces (Modbus, current output, voltage output, relay)

•Acoustic signal

The display will dim after 60 seconds if no key is pressed during this time.

Key functions in display menu

key: Confirms the selection, moves to the next step.

key: One step back.

and keys: Changes a setting (selects a setting or changes a value). The

cursor (the blinking rectangle) indicates the selected menu

item.

key: Confirms the settings and returns to the device main menu.

Distance measurement

The SO250-UI Tank Sensor can detect distances. The following settings can be applied

in the “Distance measurement” menu:

•Distance display unit

•Measurement time interval

SO250

nsor

Tank content:

4885 litres

Settings >

SO250

nsor

Distance: 59.4cm

Settings >

SO250-UI Tank Sensor | Version 18.08.2015 | Data subject to alteration. Errors subject to correction. 9

Main menu:

Press the key once to access the “Settings” area.

Move the cursor (the blinking rectangle on the right)

to the ”Distance measurement” menu item using the

and keys, and press the key.

Move the cursor to the desired setting using the or

keys. You can display distances in millimetres

(mm), centimetres (cm) or metres (m). Confirm your

selection using the key.

Use the and keys to set the desired time interval

for your measurements.

Settings options: From 1 s to 9 s in one-second increments, from 10 s to 50 s in ten-

second increments, from 1 min to 120 min in 10-minute increments.

Confirm your selection using the key. You will automatically return to the basic

settings.

Content measurement

The SO250-UI Tank Sensor can measure a tank's liquid contents. Possible tank shapes

include rectangular, spherical and upright or horizontal cylindrical tanks. Where two or

more tanks of the same type are laid out in a battery, only one tank need be described

to allow the SO250-UI to calculate the content based on the input number of tanks. The

following settings can be applied in the “Content measurement” menu:

•Tank form

•Tank volume / capacity / filling height

•Sensor distance from liquid when tank is full

•Number of tanks in battery

•Content display unit

•Measurement time interval

SO250

nsor

Tank content:

4885 litres

Settings >

SO250

nsor

Distance: 59.4cm

Settings >

ance measurem

>™

Content measurem >

Interfaces >

Acoustic signal >

n mm

>™

Display in cm >

Display in m >

easuremen

frequency?

Once every 8 secs.™

SO250-UI Tank Sensor | Version 18.08.2015 | Data subject to alteration. Errors subject to correction.

Main menu:

Press the key once to access the “Settings” area.

Move the cursor (the blinking rectangle on the right) to

the "Content measurement" menu item using the

and keys, and press the key.

Move the cursor to the desired setting using the or

keys. The SO250-UI can calculate the content of

rectangular, spherical, and upright or horizontal

cylindrical tanks.

Confirm your selection using the key and proceed as described for the respective tank

form.

Rectangular tank

Move the cursor to the desired setting using the or

keys. You can input the capacity of the tank in litres

(l) or cubic meters (m³). Confirm your selection using

the key.

Use the and keys to select the maximum capacity of the tank (the number of tanks

in use can be input at a later stage).

Settings options: Litres: 1 to 99 l in one-litre increments, 100 to 100,000 l in one

hundred-litre increments. Cubic meters: 1 to 99 m³ in one-litre increments, 100 to

100,000 m³ in one hundred-cubic metre increments.

Confirm your selection using the key.

Use the and keys to select the maximum filling

height of the tank (1 to 254 cm).

Confirm your selection using the key and proceed

as described in “Settings for all tank shapes”.

SO250

nsor

Tank content:

4885 litres

Settings >

SO250

nsor

Distance: 59.4cm

Settings >

mum capac

of tank:

5000 m3>™

mum capac

of tank:

5000 litres >™

ance measurem

Content measurem >™

Interfaces >

Acoustic signal >

angu

>™

Spherical tank >

Cylinder upright >

Cylinder horizont.>

ume

>™

Tank volume in m3>

Select a measurement

unit!

mum

filli

heightof tank:

230 cm ™

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