Tokyo Keiki MRF-10 Installation & Operation Manual

Flat radar level sensor

Hide thumbs

Table of Contents

Quick Links

Download this manual

Doc No. ＫＦ０９－００３B

Flat Radar Level Sensor

MRF-10

Installation & Operation Manual

Table of Contents

Need help?

Do you have a question about the MRF-10 and is the answer not in the manual?

Questions and answers

Summary of Contents for Tokyo Keiki MRF-10

Page 1 Doc No. ＫＦ０９－００３B Flat Radar Level Sensor MRF-10 Installation & Operation Manual...
Page 2: Safety Cautions
Follow directions given herein at all times when operation. TOKYO KEIKI INC. is not at all liable for an injury and/or a damage resulting from misuse of this equipment by the user that is contrary to these cautionary notes.
Page 3: Usage Precautions
Usage Precautions This instrument is used to measure level height by means of microwave. For safe usage and optimum performance of the radar level sensor, always operate the instrument according to the usage precautions below. CAUTION 1. Failure to comply with one or more of the following conditions may result in poor measurement performance or incorrect measurement values.
Page 4 Introduction Thank you for your selecting our radar level sensor. This Manual includes detailed explanations regarding safety cautions, structure, set up, operation, troubleshooting, and maintenance of the radar level sensor. Read this manual carefully before operation to ensure an adequate understanding of the equipment.
Page 5 Restrictions and precautions necessary to maintain the equipment ………………... (3) INDEX 1. Product Description 1.1 Features 1.2 Measuring principle 1.3 MRF-10 measuring system 2. Mechanical Installation 2.1 Requirements 2.2 Beam area in the measuring range 2.3 Recommended installation example (1) Installation for water channel (2) Installation for storage tank 3.
Page 6 (1) Monitoring of measuring value (2) Logging the measured data Tank Spectrum (1) Plotting Tank Spectrum (2) Zoom-in a part of spectrum 4-10 (3) Save spectrum data 4-11 Noise Table 4-12 (1) Plotting points 4-12 (2) Deleting data from noise table 4-14 Parameter instructions 4-15...
Page 7 (blank)
Page 8: Product Description
1. Product Description 1.1 Features The MRF-10 is a loop-powered radar level gauge, which can be installed easily in a variety of applications. The MRF-10 employs a non-contact radar level gauging principle based on pulsed microwave signals and is suitable for level measurement in applications such as liquids, pastes and slurries.
Page 9 (blank)
Page 10: Mechanical Installation
2.1 Requirements Please regard to following points to install MRF-10 transmitter head. （1）Directivity angle of microwave MRF-10 has elliptical (oval) directivity of microwave as below Fig. 2.1-1. Please refer to chapter 2.3 example of recommended installation to install transmitter head properly.
Page 11 2.2 Beam area in the measuring range ＊ List 2.2-1：Beam angle & Beam area ( -3dB Half-power beam angle) Beam area (m) Lengthwise direction Crosswise direction Distance (m) ＊ (cable direction） Beam angle =23° ＊ Beam angle =50° Long side Short side Distance Beam area...
Page 12 2.3 Recommended installation example Following installation examples are recommended installations. (1) Installation for water channel Install MRF-10 lengthwise direction of transmitter head to be same direction of flow direction as below. Also please keep the required free space from the wall.
Page 13 Fig. 2.3-3 example of wall side mounting installation for Inlet water level measurement (2) Installation for storage Tank Please avoid installing MRF-10 at the very center of tank, because the reflection of side beam will affect stable measurement. Besides, please set the lengthwise direction of MRF-10 install to be parallel against the nearest tank wall.
Page 14: Electrical Installation
Shield Connect to power line shield at cabinet side. Fig. 3.1.1-1 wiring connection ・ FG (frame ground) must be connected to ground line with cable shield as below. MRF-10 standard cable Power MRF-10 scource Shield...
Page 15: Power Supply
Any analog recorder can be connected instead of Hart modem. HART modem Power Supply Unit 250Ω MRF-10 Fig. 3.1.2-1 Connection to commissioning software Cables Requirement Use shielded twisted cable 2-core or 3 core. Cross-sectional area of conductor is 0.2 …2.5mm (AWG24 …14)
Page 16 Please connect only FG line to arrester grounding line. The shield of extension line should be taken at ground line of power source side as below. The lightening arrester should be installed near-by MRF-10 transmitter head. Extention cable Power MRF-10...
Page 17 Please connect the grounding terminal near by cable entry to the ground. Grounding Terminal Do not use FG line, only with cable shield connects to grounding line as below. Power MRF-10 source Shield Extention cable Power MRF-10...
Page 18: Working Conditions
4. Commissioning 4.1 Working Conditions Microsoft Windows 2000 / XP Personal Computer which can activate HART modem HART Modem (* We have checked following products in the market.) Maker : MAC Tek Modem : VIATOR RS232 HART Interface (Model 010001) VIATOR USB HART Interface (Model 010031) 4.2 Produced file MRFConfig.exe : Main program of configuration software...
Page 19: Initial Setup
This sensor can setup by dedicated software on Notebook PC that connects with HART modem. As Fig1.1, HART modem connects with both end of load resister. >250Ω Power 4...20mA Supply Load MRF-10 HART Modem HART Handheld Communicator Fig. 1.1 Wiring 4.4 Initial Setup (1) Startup Screen Fig.
Page 20 Secondly, click [SET] button and download HART ID from the sensor. After download of HART ID, individual ID and software version No. will be filled in each column. All communication with MRF-10 will use this ID. HART ID No. Fig. 4.4-4 After getting HART ID [SET] button: Retrieve HART ID from the sensor.
Page 21 (3) Message after data communication After completion of data communication between the sensor and PC, a message window will appear as Fig. 4.4-5. Fig. 4.4-5 The message of Successful Communication In case of communication failure or time-out error, the status will indicate FAIL or TIME OUT as Fig.
Page 22: Basic Operation
4.5. Basic Operation (1) Read Parameter It shows how to read configuration parameters on the screen of “1.Configuration” for example. Input Column Parameter Name READ Button Fig. 4.5-1 Screen of “1.Configuration” before “READ” Configuration Screen will be shown by click a tab of “1.Configuration” as Fig. 3.1. Watery blue column means the parameter was not read yet.
Page 23 (2) Rewrite of Parameters It shows how to change configuration parameters on the screen of “1.Configuration” for example. [Note] When changing parameter, it is necessary to retrieve parameters by clicking [READ] button prior to parameters change. There is a possibility of malfunction if any parameter was changed without retrieving parameter.
Page 24 After changing parameters, click [WRITE] button in order to upload latest parameters to MRF-10. After completion of data transferring, all columns’ color will be changed to white as Fig. 4.5-5. Fig. 4.5-5 After uploading changed parameters That is all how to change parameters. When the other parameters in other screen are changed, repeat same operations after select other tabs.
Page 25 [START] button : Monitoring starts. All value will be refreshed at every 1s. [STOP] button : Monitoring stops. (2) Logging the measured data Real time logging is available. In order to use logging function, check the box of “Save Data Log” and input logging interval as Fig. 4.6-2. Check Box for Logging Open the dialogue to browse file folders.
Page 26 4.7 Tank Spectrum This function can monitor signal strength and conditions in measuring range. (1) Plotting Tank Spectrum Start Plotting Signal Amplitude Range = Y-axis Observation Range = X-axis Fig. 4.7-1 Tank Spectrum Screen The screen of Tank Spectrum will be active by clicking “Tank Spectrum” tab as Fig. 4.7-1.
Page 27 (2) Zoom-in a part of spectrum As Fig. 5.3, hold down the left button of mouse and drag the mouse pointer from upper-left-end to lower-right-end of the area that is zoomed in. Hold down the left button of mouse and drag the mouse pointer from upper-left-end to lower-right-end of the area that is zoomed in.
Page 28 (3) Save spectrum data Tank spectrum can save as image data and text data individually. Text Data Save Image Data Save Fig. 4.7-5 Data Save As Fig. 4.7-5, this menu provides two data format to save by CSV (Clicking [Data Save]) or Bitmap (Clicking [Image Save]).
Page 29 4.8 Noise Table Noise Table can plot on the chart of tank spectrum. [Note] When plotting Noise Table, it is necessary to retrieve the data by clicking [READ] button in the menu of “6. Noise” prior to plotting the table. (1) Plotting points After retrieving data of Noise Table, the table will be shown by blue line as Fig.
Page 30 Repeat the above procedure to complete Noise Table. Fig. 4.8-3 is an example of completed Noise Table. Fig. 4.8-3 Sample of Noise Table After all plotting, click [Noise Write] button to upload the data to MRF-10. Upload Noise Table data Fig. 4.8-4 Uploading of Noise Table data After uploading, all data can be shown in the menu of “6.
Page 31 Select “DELETE” Fig. 4.8-6 Delete a point After deleting, click [Noise Write] button to upload the data to MRF-10. After uploading, all data can be shown in the menu of “6. Noise”. The deleted data was eliminated from this list as Fig. 4.8-7.
Page 32 4.9 Parameter instructions - shaded areas indicate default settings. [1--] CONFIGURATION Settings [1-1] Measuring Unit Value Description Sets display in Metric units Sets display in Feet units Note: When ‘Measuring Unit’ is changed, units of other parameters also change. [1-2] G parameter （distance between flange reference point and measuring reference point） Parameter Default Value Description...
Page 33 [2--] ANALOG Settings [2-1] Analog output parameter Parameter Description Level Level value to 4-20 mA converted Ullage Ullage value to 4-20 mA converted Volume Volume value to 4-20 mA converted Signal strength amplitude value converted to 4-20 mA Amplitude [2-2] Minimum output (4 mA) Parameter Output Default...
Page 34 [3--] Volume Setting [3-1] Linearization Selection Parameter Description Not Calculated Linear Vertical Cylinder Spherical Cylindrical Horizontal Cylinder User Tank Table Tank Configurations Cylindrical Linear Spherical [3-2] Linearization Point Number Parameter Default Description Value 0-20 Input required no. of points for table [3-3] Level point （...
Page 35 [3-5] Delete all tables Parameter Value Description Do not delete Delete all Setting “1” clears table [3-6] Diameter of the tank Parameter Default Value Description 0.000-10.000 1.000 Parameter range in metric [m] units If measurement unit is [ft], display will be converted to show ‘feet’ units. [3-7] Length of the tank Parameter Default Value...
Page 36 [4--] Calibration [4-1] 4mA Calibration Parameter Default Value Description 3.50-4.50 4.00 In fixed current output mode with current set at 4mA, input ammeter reading. [4-2] 20mA Calibration Parameter Default Value Description 15.00-25.00 20.00 In fixed current output mode with current set at 20mA, input ammeter reading.
Page 37 [5-3] Search Delay Parameter Default Value Description 1-120 Time delay after loss of echo until restart in accordance with [sec] setting. [5-4] Alarm Delay Parameter Default Value Description 1-120 Time delay after loss of echo until alarm sounds in accordance with [sec] setting. [5-5] Bottom Window Parameter Default Value...
Page 38 [6--] Noise [6-1] Noise table number Parameter Default Value Description 0-10 Input required no. of points for table [6-2] Noise table （ [600] ~ [609] ） Parameter Default Value Description 0.000-10.000 0.000 Noise position by distance Parameter range in metric [m] units If measurement unit is [ft], display will be converted to show ‘feet’...
Page 39 [7--] Other [7-1] Re-search Parameter Value Description Research Mandatory surface echo re-search [7-2] Parameters Reset Parameter Value Description Initialization Initialized by “1” setting [7-3] Hardware Reset Parameter Value Description Reset Setting “1” executes hardware reset [7-4] Self-check Parameter Value Description Self-check Execute self-check.
Page 40: Basic Parameters
5 Setup 5.1 Basic Parameters Following parameters must be inputted to measure properly. (Offset Distance from Hand-dipping point to Reference Point [MRF-10’s face].） Tank Dimensions R (Distance from Hand-dipping point to level zero.) C (Measuring range that is lower than level zero.)
Page 41 5.3 Avoiding disturbance echoes There are two ways to avoid the disturbance echo problem. (1) Dead Band (=”H”) When there are disturbance echoes in the near zone such as stairs at the top of the tank, the gauge may capture and interpret these echoes as coming from the liquid surface.
Page 42 [ How to create a noise table ] 1) Open Menu tab [6-1] and then set the noise table number (maximum10 points). 2) Open Menu tab [6-2], and set distance parameters into the data field in accordance with selected numbers. (For example, if “10” is set at [6-1], you will need to set data [600]~[609] for distance values.) 3) Set distance data for [600], and push “ENTER key”...
Page 43 [ One point advice regarding noise table input procedure ] It is necessary to provide some allowance around the echo peak and a margin of threshold for noise amplitude. These are +-0.3m and +5dB respectively. Noise Table point “n” must also be nearer than next Noise Table point “n+1”. If this rule is not maintained, noise table errors will occur and this function will become invalid.
Page 44 5.4 Volume calculation There are 4 types of volume calculations which are set up by the Linearization Selection parameter. (1) Defined tanks - Linear Tank (Vertical Cylinder Tank) Volume is calculated from diameter, offset level and measured level. Diameter is the diameter of the tank and offset level is the measurement level compensation factor.
Page 45 (2) User defined tank - Tank Table It is possible to set up 20 points each for level and volume respectively in the Tank Table which are linearly interpolated between points. More than two points must be input to set up the Tank Table. (Tank Table Error) Four volume units can be selected - cubic meter, gallons, barrels and cubic feet.
Page 46 5.5 Analog value compensation (1) Analog check Input designated value at [2-5] “Fixed Current Output”, then monitored on multi-meter like analog current meter. Input any values of current. (2) Analog calibration When analog output current is not correct, revise the value in the following manner. Input “4.000mA”...
Page 47 Offset level from reference point and scale factor are adjusted under [4-3] “Offset Calibration” and [4-4] “Span Calibration”. If there is a difference between the Tank ref. point and the MRF-10 ref. point, you can input “G” for calibration [1-4]. 5.7 Bottom recognition Tank bottom recognition is necessary for measurement of low reflection targets such as oil surfaces.
Page 48: Technical Information
6 Technical Information 6.1 Main unit specification (1) Overview Measuring principle Microwave Pulse Echo Operating frequency 5.8 GHz Half-power beam width Lengthwise : 50 deg Crosswise : 23deg Transmitting power less than 35 µV/m at 3m Measuring range Max. 10 m (33’) (2) Power Supply voltage 16..36 VDC...
Page 49 Load Minimum load is 250Ω for HART communication R0≦(Vin-16)/0.022 21.5 available Load[Ohm] (4) Accuracy Measured error * ) ±5 mm (0.2”) (0.1m up to 5m) ±10 mm (0.4”) (5m up to 10m) Linearity * ) less than ±10 mm (0.4”) Repeatability * ) ±1 mm (0.04”) Ambient temperature effect...
Page 50 6.3 Construction (1) Cable Connection Cable type Shielded twisted 3-cores Cross-section area of cable: 0.2..2.5 mm 2 , (AWG24..14) Cable Length (2) Material and Mass Transmitter Case Stainless steel Di-cast SCS-14 Antenna face panel For sewer: PVC For open ditch: PC Mass 2.7kg (except attached cable)
Page 51: Dimension (Mm)
6.4 Dimension (mm) 4-M6 (depth: 5.5) Grounding Terminal Radiation face...
Page 52 (blank) 6- 5...
Page 53 2009 April 1 Edition 2015 August 3 Edition TOKYO KEIKI INC. Measurement Systems Company 2-16-46, Minami-Kamata, Ohta-ku, Tokyo 144-8551, Japan TEL: +81-3-3737-8621 FAX: +81-3-3737-8665 Web: http://www.tokyo-keiki.co.jp/ Copyright 2009 by TOKYO KEIKI INC. All rights reserved. (Specifications are subject to change without notice.)