delta-mobrey DMSP400 Series User Manual
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delta-mobrey DMSP400 Series User Manual

Ultrasonic level transmitter
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IOM-DMSP400: NOVEMBER 2020
USER'S MANUAL
ULTRASONIC LEVEL TRANSMITTER: DMSP400 and DMSP500 series
DELTA MOBREY LTD.
Hudson House, Albany Park Camberley Surrey, GU16 7PL, UK.
+44 (0) 1252 729140, fax +44 (0) 1252 729168
www.delta-mobrey.com, e-mail: sales@delta-mobrey.com
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  • Page 1 IOM-DMSP400: NOVEMBER 2020 USER’S MANUAL ULTRASONIC LEVEL TRANSMITTER: DMSP400 and DMSP500 series DELTA MOBREY LTD. Hudson House, Albany Park Camberley Surrey, GU16 7PL, UK. +44 (0) 1252 729140, fax +44 (0) 1252 729168 www.delta-mobrey.com, e-mail: sales@delta-mobrey.com 1 / 53...
  • Page 2 The Delta Mobrey Sonar Pulse (DMSP) range represents the next evolution in Delta Mobrey’s range of ultrasonic level measurement instrumentation APPROVALS: BKI ATEX, Certificate No.: BKI20ATEX0019 X 2 / 53...
  • Page 3 BASIC CONCEPTS AND ELEMENTS OF THE ULTRASONIC MEASUREMENT 3 / 53...

  • Page 4: Table Of Contents

    CONTENTS 1. INTRODUCTION ..................5 5. PARAMETERS – DESCRIPTIONS AND PROGRAMMING ....25 5.1 M ............25 EASUREMENT ONFIGURATION 2. TECHNICAL DATA ................. 6 5.2 C ................31 URRENT UTPUT 2.1 G ................... 6 5.3 R ................. 32 ENERAL ELAY UTPUT 2.2 A ........

  • Page 5: Introduction

    Thank you for choosing Delta Mobrey instrument. We are sure that you will be satisfied throughout its use. 1. INTRODUCTION Application A Total beam angle of 5 – 7 at -3 dB as is featured by most of DELTA MOBREY’s transducers ensuring a reliable measurement in narrow tanks with The DMSP400 and DMSP500 compact ultrasonic level transmitters from uneven side walls as well as in process tanks with various protruding objects.

  • Page 6: Technical Data

    2. TECHNICAL DATA 2.1 G ENERAL Transducer materials PVDF Housing material Plastic: Glass fibre plastic PBT; Metal: Paint coated aluminium, Stainless steel PP, PVDF and PTFE transducers: -30 °C … +90 °C (-20 °F … 190 °F) Process temperature Stainless Steel transducer: -30 °C … +100 °C (-20 °F … 210 °F), 120 °C [250 °F] for max. 2 hours Aluminium housing -30 °C …...

  • Page 7: Additional Data For Explosion - Proof Devices

    2.2 A DDITIONAL DATA FOR EXPLOSION PROOF DEVICES 3.2.1 ATEX APPROVAL No.: BKIxxxxxxxx (approval pending) TYPE DMSP500 series Ex marking (ATEX) II 1 G Ex ia IIB T6…T4 Ga  Intrinsically safe data Ci ≤ 15 nF, Li ≤ 200 H, Ui ≤...

  • Page 8: Pecial Data Of The Two Wire Dmsp400 And Dmsp500

    2.3 S DMSP400 DMSP500 PECIAL DATA OF THE TWO WIRE DMSP***P DMSP***A DMSP***B DMSP***D DMSP***F DMSP***L DMSP***C DMSP***N DMSP***E DMSP***G DMSP***M DMSP***Q Transducer material PVDF PVDF PVDF Maximum measuring 4 (13) 6 (20) 8 (26) 10 (33) 15 (49); 20 (66) 25 (82) distance * [m / (ft)] Min.

  • Page 9: Dimensions

    2.4 D IMENSIONS DMSP***A/C DMSP***B/N DMSP***D/E 2 x M20x1.5 2 x M20x1.5 2 x 1/2" NPT 2 x 1/2" NPT 2" BSP or NPT 1 1/2" BSP or NPT BSP length 15 BSP length 15 NPT length 22 NPT length 22 DMSP***F/G DMSP***J/K DMSP***L/M/P/Q...

  • Page 10: Special Conditions Of Safe Use

    2.5 S PECIAL CONDITIONS OF SAFE USE • Intrinsically safe units with Ex ia IIB marking can only be used in certified intrinsically safe loops with the previously given technical data. (see values in Additional data for Ex approved models under Point 3) •...

  • Page 11: Installation

    3. INSTALLATION 3.1 L IQUID EVEL EASUREMENT POSITION The optimal position of the DMSP400 and DMSP500 is on the radius r = (0.3 – 0.5) R of the (cylindrical) tank / silo. (Take also sonic cone on page 1 into consideration.) SENSOR ALIGNMENT TEMPERATURE The sensor face has to be parallel to...
  • Page 12 OBSTACLES STAND-OFF PIPE Make sure that no in-flow path or objects The structure of the stand off pipe should be rigid; the inner rim where the ultrasonic beam (e.g. cooling pipes, ladders, bracing leaves the pipe should be rounded. members, thermometers, etc.) or no tank wall of the ragged surface protrude into D min the sensing cone of the ultrasonic beam.

  • Page 13: Pen Hannel Low Easurement

    3.2 O HANNEL EASUREMENT • For ultimate accuracy, install the sensor as close as possible above the expected maximum water level (see minimum measuring range). • Install the device in a place defined by the characteristics of the metering channel along the longitudinal axis of the flume or weir. In case of Parshall flumes supplied by DELTA MOBREY the location of the sensor is marked.

  • Page 14: Loop Current Checking

    3.4 L URRENT HECKING After removing the cover (and the Display Module if there is any) the actual loop current can be measured with an accuracy of 0.5% by connecting an voltmeter (in the range of 200 mV) to the points indicated on the drawing above 4.

  • Page 15: Programming Without Display Module

    4.1 P ROGRAMMING WITHOUT ISPLAY ODULE Programming is only possible if the DMSP400 and DMSP500 is in Level Measuring Mode and receives valid echo i.e. “VALID” LED is lit! The following can be programmed without display module • Assignment of the 4 mA to a required e.g. min. level / max. distance •...
  • Page 16 Maximum level (100%, full tank) assignment to 20 mA Action Led state following the action 1) Check for a valid ECHO Valid ECHO, transmitter programmable 2) Press NEXT button steadily DMSP400/500 in programming mode 20 mA as signed to the distance 3) Press DOWN button steadily (see picture)
  • Page 17 Damping time setting (Check for a valid echo as above) Action Led state following the action 1) Press ENTER button steadily DMSP400/500 in programming mode 2) Press any of the NEXT – 10 sec – 30 sec DOWN – 60 sec buttons steadily 3) Release buttons Programming completed...

  • Page 18: Programming With The Display Module

    4.2 P ROGRAMMING WITH THE ISPLAY ODULE The DMSP400 and DMSP500 should be adjusted to the process by programming the parameters. The Display Module can be used to display the parameters during programming and measurement values during measurement. The Display Module supports two separately accessible programming modes representing 2-layers of programming complexity, depending on user choice. QUICKSET (5.2.4) Recommended as a simple and fast way to set up the DMSP400/500 by 6 basic parameters for the following basic settings, marked by abbreviations easy to remember...

  • Page 19: Display Module

    Display Module Symbols used on the LCD Symbols used on the frame • DIST – Distance (measuring) mode • M – Metric system • LEV – Level (measuring) mode • US – US calculation system • VOL – Volume (measuring) mode •...

  • Page 20: Indications Of The Display Module And Led Status

    Enter into or quit programming modes Basic steps while parameter address is blinking Basic steps while parameter value is blinking GET LEVEL function Special function used only in level and distance measurement modes + DOWN Notes: If after pressing ENTER blinking does not spring over from the parameter address to the parameter value this means that •...

  • Page 21: Quickset

    Display Module indications The following process values can be displayed Depending on the measurement one of the • Volume / Flow – if programmed so below symbols will lit and the process value • Level – if programmed so displayed (see P01 chapter 6.1). Engineering •...
  • Page 22 Keys Function + DOWN (press for min 3 secs!) Enter or exit QUICKSET programming mode ENTER , DOWN , NEXT Increase/decrease and move left the blinking digit + DOWN “GET LEVEL” – display actual level measured by the DMSP400/500 Save readout and step to the next screen ENTER NEXT + UP...

  • Page 23: Full Parameter Access

    Screens Actions 20 mA xxxx – level value assigned to 20 mA current output Manual: set level value (Use UP / DOWN / NEXT keys) and save it (by ENTER Automatic: use the “GET LEVEL” function (UP + DOWN ) to obtain actual measured value with level in tank or a fixed target, i.e.
  • Page 24 Measuring is going on during programming in accordance with the old parameter set. New parameter set will be valid after returning to the Measurement to the Programming Mode. Steps and indications of the Full Parameter Access programming mode pressing Keys while Parameter Address is blinking while Parameter Value is blinking Save the modification of the Parameter Value and return...

  • Page 25: Parameters - Descriptions And Programming

    5. PARAMETERS – DESCRIPTIONS AND PROGRAMMING 5.1 M EASUREMENT ONFIGURATION P00: - cba Application/Engineering Units Programming of this parameter will result in loading the factory default with the corresponding engineering units. Operating (measurement) mode Liquid level measurement Engineering units (according to “c”) Attention: mind the sequence! When programming this parameter the Metric...
  • Page 26 P01: - ba Measurement Mode – Bargraph Parameter value „a” will determine the basic measurement value that will be displayed and proportional with the current output. Depending on the value of “a” process values as listed in the 3d column can also be displayed by pressing NEXT .
  • Page 27 P03: - - - a Values displayed - Rounding It is important to keep in mind that the instrument is measuring distance as basic quantity. The resolution depending on the distance can be considered as a kind of Measured Distance Resolution rounding that will be contained in all further value (of level, volume or volume –...
  • Page 28 Maximum Distance to be Measured (H) The maximum distance to be measured is the greatest distance between the surface of the transducer and the level to be measured. This is the only parameter that has to be programmed for each application other than distance (however to avoid disturbing effect of possible multiple echos it is suggested to do this in distance measurement applications too).
  • Page 29 P05: Minimum measuring distance (Dead zone- Close-end blocking) The DMSP400 and DMSP500 will not accept any echo within the blocking distance set here. Automatic Close-end-blocking (Automatic Dead Band control) By using the factory default value, the unit will automatically set the smallest possible close-end-blocking distance i.e. the dead band. Manual close-end-blocking Manual close-end-blocking should be used for example to block out the echo originating from the bottom rim of a stand-off pipe or from any object protruding into the ultrasonic cone near to the transmitter.
  • Page 30 P06: Far end blocking Far end blocking is used to neglect incorrect level/volume readings and output actions below a pre-set level programmed in P06. A). Level measurement The far-end blocking can be used to avoid disturbing effect of stirrer or heaters at the bottom of the tanks. If the level of the medium sinks below the blocked out range: - ”Sub 0”...

  • Page 31: Current Output

    5.2 C URRENT UTPUT P10: Value (of distance, level, volume or flow) assigned to 4 mA current output P11: Value (of distance, level, volume or flow) assigned to 20 mA current output Values are interpreted according to P01(a). Please note that in case of programming for (LEV or VOL) % measurement the min and max value has to be entered in the relevant engineering units of LEV (m, ft) or VOL (m , ft Assignment can be made so that the proportion between the change of the (measured or calculated) process value and the change of the current...

  • Page 32: Relay Output

    5.3 R ELAY UTPUT P13: - - - a Relay function Relay function Also set DIFFERENTIAL LEVEL CONTROL P14, P15 (Hysteresis control) There is a need to set Relay is energised if the measured or calculated value (in level min 20 mm) hysteresis exceeds the value set in P14 Relay is de-energised if between P14 and P15 the measured or calculated value descends under the...

  • Page 33: Measurement Optimisation

    5.5 M EASUREMENT PTIMISATION P20: - - - a Damping This parameter can be used to reduce unwanted fluctuation of the display and output. Damping LIQUIDS time None/moderate Heavy/dense fume or (seconds) fume or waves turbulent waves no filter applicable not recommended recommended applicable...
  • Page 34 P25: - - - a Selection of Echo within the measuring window A so-called measuring window is formed around the echo signal. The position of this measuring window determines the flight time for calculation of the distance to the target. (the picture below can be seen on the test oscilloscope) Some applications involve multiple (target + disturbing) echoes even within the measuring window.
  • Page 35 P28: - - - a Echo loss indication Echo loss indication Remark During echo-loss, display and analogue output will hold last value. If the echo-loss prevails for 10 sec plus the time period set in P20 (damping time), the reading on the display will change to "no Echo"...
  • Page 36 P29: Blocking out of disturbing object One fixed object in the tank, disturbing the measurement, can be blocked out. Enter distance of the object from the transducer. Use the Echo Map (P70) to read out the precise distance of disturbing objects. FACTORY DEFAULT: 0 Sound velocity at 20 C (m/sec or ft/sec depending on P00(c)) P31:...

  • Page 37: Volume Measurement

    5.6 V OLUME EASUREMENT P40: - - ba Tank shape Tank shape Also to be set Standing cylindrical tank shape (value of “b” as below) P40 (b), P41 Attention! Standing cylindrical tank with conical bottom P41, P43, P44 The value „a” determining the Standing rectangular tank (with chute) P41, P42, (P43, P44, P45) shape of the tank should be...

  • Page 38: Volume Flow Measuring

    5.7 V OLUME EASURING P40: - - ba Devices, formula, data Devices, formula, data Also to be set General PARSHALL flume P46, P42 PALMER-BOWLUS (D/2) P46, P41 PALMER-BOWLUS (D/3) P46, P41 PALMER-BOWLUS (Rectangular) P46, P41, P42 Khafagi Venturi P46, P42 Bottom-step weir P46, P42 Suppressed rectangular or BAZIN weir...
  • Page 39 P40 = 09 General Parshall flume 0.305 < P42(width) <2.44 2.5 < P42 /s]= K*P42*h P42[m] 3.05 2.450 4.57 2.400 P= 2/3*A 6.10 2.370 7.62 2.350 9.14 2.340 15.24 2.320 P40 = 10 Palmer-Bowlus (D/2) flume /s] = f(h1/P41)*P41 where h1[m] = h+(P41/10) D/10 39 / 53...
  • Page 40 P40 = 11 Palmer-Bowlus (D/3) flume /s] = f(h1/P41)*P41 where h1[m] = h+(P41/10) D/10 P40 = 12 Palmer-Bowlus (Rectangular) flume /s] = C*P42*h where C= f(P41/P42) D/10 40 / 53...
  • Page 41 P40 = 13 1 5 c m Khafagi Venturi flume /s] = P42*1.744*h + 0.091*h E c h o T R E K E c h o T R E K P 4 6 P40 = 14 Bottom step weir 0.0005 <...
  • Page 42 P40 = 16 P 4 0 = 1 6 Trapezoidal weir 0.0032 < Q[m /s] < 82 20 < P41[°] < 100 P 4 6 0.5 < P42[m] < 15 0.1 < h[m] < 2 P 0 4 P 4 1 /s] = 1.772*P42*h1.5+1.320*tg(P41/2)*h 2.47 P 4 2...
  • Page 43 P40 = 19 THOMSON (90°-notch) weir 0.0002 < Q[m /s] < 1 0.05 < h[m] < 1 /s] = 1.320*h 2.47 Accuracy: 3% P40 = 20 Circular weir 0.0003 < Q[m /s] < 25 0.02 < h[m] < 2 /s] = m*b*D m= 0.555+0.418h/P41+(P41/(0.11*h)) Accuracy: ...

  • Page 44: 32-Point Linearisation

    5.8 32-P OINT INEARISATION P47: - - - a Linearisation Linearisation is the method of assigning requested (calibrated or calculated) level, volume or flow to values measured by the transmitter. It can be used for instance if the sound velocity is not known (LEVELLEVEL) or in the case of tank with other shape than under 6.4 or open channel other than under 6.5 (LEVEL ...

  • Page 45: Informational Parameters (Read Out Parameters )

    Conditions of correct programming of the data pairs Left column “L” Right column “r” L(1)= 0 r(1) L(i) r(i) L(j) r(j) The table must always start with: L(1)= 0 and r(1)= value (assigned to 0 level) The table must be ended either with the 32 data pair i.e.
  • Page 46 P70: Number of Echoes / Echo Map Number of echos DMSP400/500 is monitoring the echo yy : xxxx yy : xxxx 70 : _ _ XX conditions. (AMPLITUDE) (DISTANCE) Entering this parameter will save the actual echo map. yy Serial number of the echo Number, distance and amplitude of these echoes can be read-out one by one.

  • Page 47: Additional Parameters Of The Flow Metering

    5.10 A DDITIONAL ARAMETERS OF THE ETERING P76: Head of flow (LEV) The Headwater value can be checked here. This is the “h” value in the formula for flow calculation. P77: TOT1 volume flow totaliser (resetable) P78: TOT2 volume flow totaliser (non-resetable) Resetting TOT1 totaliser: 1).

  • Page 48: Test Parameters

    5.12 T ARAMETERS P80: Current output test (mA) Going to this parameter, the actual current output (corresponding to the measured process value) will be displayed. By pressing ENTER (now blinking) current value can be set for any value between 3.9 and 20.5 mA. The current output has to show the same value which can be checked by an ampere meter, according to the description under 4.4.

  • Page 49: Simulation

    5.13 S IMULATION This function enables the user to test the settings of the outputs. The DMSP400 and DMSP500 can simulate the static or continuous change of level according to the simulation cycle time, high level and low level set in P85, P86 and P87. (The simulation levels must be within the programmed measuring range set in P04 and P05.) After selecting simulation type in P85 and setting simulation values Measurement Mode has to be re-entered.

  • Page 50: Error Codes

    6. ERROR CODES Error Error description Causes and solutions Code Memory error Contact local agent No echo received (no reflection) No Echo Echo loss See Action 5 and 6 Hardware error Contact local agent Display overflow Check settings Sensor error or improper installation/mounting, level in Verify sensor for correct operation and check for correct mounting the dead band according to the User’s Manual...

  • Page 51: Parameter Table

    7. PARAMETER TABLE Par. Page Description Value Par. Page Description Value d c b a d c b a Application / Engineering Units Echo loss indication Measurement Mode Blocking out of disturbing object Calculation units N.A. Rounding Sound velocity in different gases Maximum Measuring Distance Specific gravity Minimum Measuring Distance...
  • Page 52 Par. Page Description Value Par. Page Description Value N.A. TOT2 volume flow totaliser N.A. N.A. N.A. Current generator test N.A. Relay test Overall operating hours of the unit N.A. Time elapsed after last switch-on N.A. Operating hours of the relay Simulation mode Number of switching cycles of the relay Simulation cycle time...

  • Page 53: Sound Velocities In Different Gases

    8. SOUND VELOCITIES IN DIFFERENT GASES The following table contains the sound velocity of various gases measured at 20 ºC. Gases Sound Velocity (m/s) Gases Sound Velocity (m/s) Acetaldehyde 252.8 Ethylene 329.4 Acetylene 340.8 Helium 994.5 Ammonia 429.9 Hydrogen sulphide 321.1 Argon 319.1...

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