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Microlectra Dinel ULM-70 Instruction Manual

Ultrasonic level meters
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INSTRUCTION MANUAL
ulm – 70
ultrasonic level meters
Firmware: v.2.0
Read carefully the instructions published in this manual before the first use of the level meter. Keep the manual
at a safe place. The manufacturer reserves the right to implement changes without prior notice.

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  • Page 1 INSTRUCTION MANUAL ulm – 70 ultrasonic level meters Firmware: v.2.0 Read carefully the instructions published in this manual before the first use of the level meter. Keep the manual at a safe place. The manufacturer reserves the right to implement changes without prior notice.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS 1 . Measuring principle............................3 2  .  Range of applications ............................3 3  .  Variants of sensors ............................3 4  .  Dimensional drawings ............................4 5 .  Installation and putting into operation ....................... 4 6.   Installation instructions ..........................5 7. Electrical connection ............................9 8. Examples of ULM-70 connection ........................

  • Page 4: Measuring Principle

    SAFETY All operations described in this instruction manual have to be carried out only by trained personnel or an accredited person. Warranty and post warranty service must be exclusively carried out by the manufacturer. Improper use, installation or set-up of the level meter can result in crashes in the ap- plication (overfilling of the tank or damage of system components). The manufacturer is not responsible for improper use, losses of work caused by either direct or indirect damage, and for expenses incurred during installation or use of the level meter.

  • Page 5: Dimensional Drawings

    4 . DIMENSIONAL DRAWINGS ULM–70_–10 ULM–70_–06 ULM–70_–02 Pg11 cable gland Ground terminal ULM–70_–20 variant ULM-70 with protective conductor 5 . INSTALLATION AND PUTTING INTO OPERATION This procedure includes the following three steps. • INSTALLATION • ELECTRIC CONNECTION • SETTING ULM–70 © Dinel, s.r.o.

  • Page 6: Installation Instructions

    6 .     INSTALLATION INSTRUCTIONS Install the level meter in the vertical position into the upper lid of the tank or reservoir using • a welding flange, a fastening nut or a flange so that the level meter axis can be perpendicular to the surface level of the measured liquid (Fig. 1). •     T he min. dimensional parameters to install the level meter into a lid or a ceiling of a tank are given in Fig. 3. When installing in an open channel (reservoir, • drain etc.), install the level meter onto a bracket as close as possible to the expected max. level. •...
  • Page 7 • If the emitted acoustic signal of the level meter is affected by near objects (roughness on walls of the tank, various partitions, mixers etc.), it is necessary to map false reflections by activating the mode "TEACHING". In case of installed mixers, it is necessary to put the mixers to position under the level meter (direct the mixer paddle to the ultrasonic signal beam) (Fig. 5 and 6). Fig. 6: False echo from the mixer paddle Fig. 5: False echo from obstacles in the tank • Do not install the level meter in or above the filling point (Fig. 7). Fig. 7: Level meter installation outside the influence of filling •...
  • Page 8 During filling, mixing and other processes, foam • can arise on the surface level of the measured liquid. The foam considerably absorbs the ultrasonic sig- nal which might cause malfunction of the level meter (Fig. 9). For such cases, it is necessary to set up "SENSITIV- ITY" mode to "high" or contact the manufacturer if need. In case of a thin layer of foam, it is also possible to use the directional horn for improving receipt of the reflec- ted echo. •...
  • Page 9 • The level meter must not be installed in places with direct solar radiation and must be protected against weather effects. • If the installation in places with direct solar radiation is in- evitable, it is necessary to mount a shielding cover above the level meter(Fig. 13). • It is suitable to run the cable under a  cable bushing (obliquely down in slack) according to Fig. 14 to prevent penetration of humidity.

  • Page 10: Electrical Connection

    7 . ELECTRICAL CONNECTION The level meter is connected to consequential (evaluating) device with a suitable cable with the outer diameter of 6 to 8 mm using screw terminals located under the display module. The recommended cross section of cores for the current version 2 x 0,5 ÷ 0,75 mm and for the ver- sion with Modbus communication 2 x 2 x 0,25 mm (twisted pair, shielded). Plus pole (+U) is connected to the terminal ( + ), minus pole (0 V) to the terminal (-) and the shielding (only for shielded cables) to the terminal ( ). Communication wires A and B of the line RS-485 (for version "M" - Modbus) are connected to the terminals A and B. Procedure to connect the cable to the level meter: Fig.

  • Page 11: Examples Of Ulm-70 Connection

    User manual - METER SRP-N118 +24V Power supply optional ACTIVE current output (depending on version) It is also necessary to design and take measures to reduce the effects of static electric- 6 mm 5 mm ity to a safe level in the wiring. 10 11 12 13 14 15 Installation in explosive atmospheres needs to be carried out in compliance with CSN EN 60079-14 (Electrical installations for explosive gaseous atmospheres – Part n.c.

  • Page 12: In Versions For Explosive Areas

    Figure 4.3. Method of connecting cables to the clamping connectors 8  . 2  .  WIRING DIAGRAM OF THE LEVEL METER WITH CURRENT OUTPUT All connections must be made while power supply is disconnected ! AND PDU UNIT IN VERSIONS FOR EXPLOSIVE AREAS Figure 4.3. Method of connecting cables to the clamping connectors All connections must be made while power supply is disconnected ! 0/1 - 5V 0/2 - 10V (option)
  • Page 13 RS - 485 Power (optional) max = 100mA supply DATA DATA- (depending on version) 5 6 7 8 9 0/1 - 5V 0/2 - 10V 10 11 12 13 14 15 (option) (option) n.c. RS - 485 n.c. (optional) (optional) (optional) 0/4-20mA User manual - METER SRP-94...

  • Page 14: Wiring Diagram Of The Level Meter With Current Output And Mgu Unit

    8  . 3  .  WIRING DIAGRAM OF THE LEVEL METER WITH CURRENT OUTPUT AND MGU UNIT ULM-70N-_ _-_-I (+U) + MGU-800 (0 V) - (with module IUI4) 8  . 4  .  WIRING DIAGRAM OF THE LEVEL METER WITH MODBUS / RS485 AND MGU UNIT MGU-800 (without additional modules) ULM-70N-_ _-_-M (0V) WH (+U) BN Cab.Sh. (B) GN (A) YE 8  . 5  .  WIRING DIAGRAM OF THE LEVEL METER WITH MODBUS / RS485 AND PDU UNIT +24V DC RS 485 - Master Imax=120 mA 12 13 14 18 19...

  • Page 15: Set-Up Elements

    9 .  Set-up elements Cable gland Upper lid nut Control buttons OLED display Label Ultrasonic transmitter Fig. 20: Full view of the level meter Button Display of measured values • Set-up mode access Ultrasonic Level Meter ULM-70 • Confirmation of selected item in the menu 1745 • Move the cursor in the line • Saving of set-up data Ultrasonic Level Meter ULM-70 Button www.dinel.cz •...

  • Page 16: Operation And Setting

    11 .  OPERATION AND SETTING Set the level meter using 3 buttons placed on the display module U N I T S (see Chapter Set-up elements). After 5 min. of inactivity, the level meter automatically returns back to the measurement mode. If the L E V E L : password is active, the level meter will be also locked.
  • Page 17 To enter to the menu press the same button to select "BASIC SETTINGS". Then, using select "MIN LEVEL" or "MAX LEVEL". set the out- Now it is shown the item "MIN LEVEL" ("MAX LEVEL"). By pressing put current "OUTPUT", the distance for the defined current "LEVEL" the value o n the dis- play "DISPLAY". By pressing button save the data. By next presses of the button leave the menu. The level meter returns to measurement mode. UNITS Level meter can process and convert a large number of different physical values. The setting is done in the item "UNITS".
  • Page 18 SENSITIVITY The setting is defined in three steps of the level meter sensitivity. "LOW" – Low sensitivity in case of surrounding interferences affecting the measurement. "MEDIUM" – Medium sensitivity (suitable for most applications). "HIGH" – Enhanced sensitivity for measured media partly absorbing the ultrasonic signal S E N S I T I V I T Y M I N L E V E L You can set the sensitivity in three M A X L E V E L U N I T S degrees: M E D I U M D A M P I N G...

  • Page 19: Service Settings

    In case of installed mixers, it is necessary to position the mixers under the level meter (di- rect the mixer blade to the ultrasonic signal Obstacles beam). Note: If there are significant obstacles in the upper half of the tank, multiple false reflec- 1/2 of Tank tions can occur especially in closed tanks. In such cases it is necessary to reduce the level in...
  • Page 20 HART HART mode (point to point, multidrop) and multidrop mode address setting. Up to 15 units ® can be connected to one two-wired cable in the multidrop mode. In case of the address "00", the point to H A R T M E D I U M T E M P E R A T U R E F A I L U R E M O D E P O L L I N G A D D R E S S point mode is enabled. The range from H A R T...

  • Page 21: Additional Functions

    11  . 3  .  A dditionAl functions Additional functions include modes to display temperature in the tank or to find out the actual flowing current in the loop. Besides, to lock modifications using a password and information about the level meter version. All of the functions are accessible from the main menu. DIAGNOSTICS It contains information about the actual temperature inside the B A S I C S E T T I N G S S E R V I C E tank (or about the compensated temperature) "TEMPERATURE" D I A G N O S T I C C L O N E S E T T I N G S and current flowing through the loop "CURRENT". If the tem- P A S S W O R D...
  • Page 22 C L O N E S E T T I N G S Incompatible type of level meter. Transfer of the settings can be W A R N I N G – C L O N I N G I S N O T realized only with the same type of level meter (e.g. ULM–70–02 P O S S I B L E - ULM–70-02, ULM–70–10 - ULM–70–10) and with the firmware W R O N G S E N S O R T Y P E version 2.0 and later.

  • Page 23: Hart

    LANGUAGE Setting the language of display menu. L A N G U A G E B A S I C S E T T I N G S You can set three kinds of language: S E R V I C E D I A G N O S T I C ČESKY – ENGLISH – по русски...

  • Page 24: Modbus ® Communication Protocol

    13 . PROTOCOL MODBUS ® Data communication takes place along a series line of a standard RS-485 with protocol Modbus RTU. A list of relevant variables is provided in a separate annex. To set up the level meter and collect measured data, you can use the software application "Basic SCADA level", which is freely available at the Website www.dinel.cz. Connecting the level meter to a peripheral device can be performed using a converter URC-485, see image 23. ULM–70_-_ _-_-M Power supply unit convertor RS485 / USB URC-485 Obr. 23: Typical hardware configuration with Modbus ® 14 . o rder code ULM – 70 – – – – – Set-up elements: D – basic version with display L – without display, metal lid Electrical connection: B – short cable outlet H – outlet for protective conductor Output type: I – current output M – RS-485 (Modbus RTU) Process connection: G – thread F – flange Maximum reach:...

  • Page 25: Safety, Protection, Compatibility And Explosion Proof

    16 . SAFETY, PROTECTION, COMPATIBILITY AND EXPLOSION PROOF The level meter ULM–70 is equipped with protection against reverse polarity and output cur- rent overload. Protection against dangerous contact is secured by low safety voltage that complies with EN 33 2000-4-41. Electromagnetic compatibility according to EN 55022/B, EN 61326/Z1 and EN 61000-4-2 to 6. Explosion proof of ULM–70Xi type complies with the following standards: EN 60079-0 : 2007; EN 60079-11 : 2007 ; EN 60079-26 : 2007 and examined by FTZÚ-AO 210 Ostrava - Radvanice certificate No.: FTZÚ 09 ATEX 0277X. Special conditions for safe use ULM–70Xi: The device is designed for connection to the isolating repeater IRU-420. When the other ap- proved supply unit is used, whose output parameters satisfy above mentioned output param- eters, it is necessary to have a galvanic separation or, if supply unit without galvanic separation is used (Zener barriers), it is necessary provide potential equalization between sensor and point of barrier earthing. For application in zone 0 the present explosive atmospheres - mixture of air with flammable gases, vapour or mists must comply: 0,8 bar < p < 1,1 bar. The device must be installed in such a way, to prevent mechanical damage of sensor face. It is necessary carried out earthing by...

  • Page 26: Marking Of Labels

    18 . M Arking of LAbeLs délka 70 mm - výška 20 mm Labels for type of ULM-70N-_ _-_-I-_-_: Temperature range ULM-70N-02-G-I-B-D Dinel according to type: Ser. No.: ______ ta = -30 ... +70°C www.dinel.cz U = 18 36 V Made in Czech Republic ta = -30 ... +70°C I = 4 20 mA IP67...
  • Page 27 Dinel www.dinel.cz U = 18 36 V Made in Czech Republic RS-485 (Modbus RTU) IP67 t = -30 ... +70 °C Labels for type of ULM-70N-_ _-_-M-_-_: Štítek pro varianty ULM-70N-06-G-M-B-D Temperature range Dinel ULM-70N-10-G-M-B-D according to type: Ser. No.: ______ ta = -30 ... +70°C www.dinel.cz U = 18 36 V...

  • Page 28: Menu Structure

    © Dinel, s.r.o. ULM–70...

  • Page 29: Specifications

    20 .  Specifications – L ecHnicAL sPecificAtions eveL Meter ULM–70_–02 0.15 ... 2 m ULM–70_–06 0.25 ... 6 m Measuring range ULM–70_–10 0.4 ... 10 m ULM–70_–20 0.5 ... 20 m Adjustable measuring range (SPAN) Min. 200 mm ULM–70N–_ _ 18 ... 36 V DC Supply voltage ULM–70Xi–_ _ 18 ... 30 V DC ULM–70_–_ _-_-I 4 ... 20 mA (Limit values 3.9 ... 20.5 mA), HART ® Output ULM–70_–_ _-_-M RS-485 with protocol Modbus RTU ULM–70_–_ _-_-I 4 ... 20 mA / Max. 22 mA Current consumption ULM–70_–_ _-_-M Max. 20 mA ULM–70_–02 ; 10 <  1 mm Resolution ULM–70_–06 <  2 mm ULM–70_–20 <  2.5 mm Accuracy (within the total range)
  • Page 30 – L ecHnicAL sPecificAtions eveL Meter Protection class IP67 ULM–70_–02 0.3 kg ULM–70_–06 0.4 kg Weight ULM–70_–10 0.6 kg ULM–70_–20 3.1 kg – d ecHnicAL sPecificAtions isPLAy ModULe Display type Matrix OLED Resolution 128 x 64 pixel Character height / Number of digits measured value 9 mm / 5 Digits Display colour Yellow Buttons Membrane switch panel Ambient temperature range -30 ... +70 °C Weight 46 g sed MAteriALs Sensor part...

  • Page 31: Packing, Shipping And Storage

    reA cLAssificAtion (according to EN 60079-10 and EN 60079-14) ULM–70N–_ _ Performance for non-explosive areas Explosive proof – suitable for explosive areas (combustible gases or vapours) ULM–70Xi–02 II 1/2G Ex ia IIB T5 Ga/Gb with Isolating repeater (IRU–420), the whole level meter ULM–70Xi–06 – zone 1, front head part – zone 0 Explosive proof – suitable for explosive areas (combustible gases or vapours) ULM–70Xi–10 II 1/2G Ex ia IIA T5 Ga/Gb with Isolating repeater (IRU–420), the whole level meter – zone 1, front head part – zone 0 Explosive proof – suitable for explosive areas (combustible gases or vapours) ULM–70Xi–20 II 2G Ex ia IIA T5 Gb with Isolating repeater (IRU–420), the whole level meter – zone 1 21 .  Packaging, shipping and storage The device DLM–35 is packaged in a polyethylene bag, and the entire consignment is placed into a cardboard box. A suitable filler material is used in the cardboard box to prevent mechanical damage during transport.
  • Page 32 Dinel, s.  r .  o . U Tescomy 249 760 01 Zlín Česká republika tel.: +420 577 002 003 e-mail: sale@dinel.cz www.dinel.cz This project was realised under financial support from the funds of the state budget through the "Department of Trade and Industry". The lastest version of this instruction manual can be found at www.dinel.cz Version: 06/2019...

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