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Instruction Manual

OCM F

OCM F - Rev. 04 as of 18.02.2014

Page 31

Fig. 7-16

Overvoltage protection compact Doppler active sensor

Fig. 7-17

Overvoltage protection compact Doppler active sensor (Ex)

When using the sensors in Ex areas the electrical values of overvoltage pro-
tection elements as well as capacities and inductance of the KDA sensor ca-
ble shall be considered additionally!

The NIVUS cable lengths below are allowed for use in Ex areas:

- unilateral overvoltage protection: 135 m

- double-sided overvoltage protection: 120 m

Please observe the non-reversed connection (p-side to transmitter) as well as
a correct, straight wiring supply.
Ground (earth) must lead to the unprotected side. Incorrect wiring will deacti-
vate the overvoltage protection function!

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Summary of Contents for osm-f

Page 1: ...1 Instruction Manual for OCM F Measurement Device Original Instruction Manual German ab Software Revisionsnummer 3 13 NIVUS GmbH Im Taele 2 75031 Eppingen Germany Phone 49 0 72 62 91 91 0 Fax 49 0 72...

Page 2: ...ire Tel 44 0 1926 632470 E mail info nivus com Internet www nivus com NIVUS U K 1 Arisaig Close Eaglescliffe Stockton on Tees Cleveland TS16 9EY Phone 44 0 1642 659294 E mail info nivus com Internet w...

Page 3: ...struction handbook German must be consulted or the manufacturer contacted for clarifica tion Copyright No part of this publication may be reproduced transmitted sold or dis closed without prior permis...

Page 4: ...15 5 4 Unit Versions 16 6 Storing Delivery and Transport 17 6 1 Receipt 17 6 2 Delivery 17 6 3 Storing 17 6 4 Transport 18 6 5 Return 18 7 Installation 19 7 1 General 19 7 2 Enclosure Dimensions 19 7...

Page 5: ...5 7 I O Menu External Level 70 9 5 8 I O Menu Control Unit 71 9 5 9 I O Menu Test control unit manual mode 71 9 6 Calibration and Calculation Menu CAL 72 9 6 1 CAL Menu Level 72 9 6 2 CAL Menu Flow V...

Page 6: ...is part of the OCM F delivery and shall be available to users at any time The safety instructions contained therein must be followed In case of selling the OCM F this technical description must be pro...

Page 7: ...OCM F the following infor mation and higher legal regulations e g in Germany VDE such as Ex regulations as well as safety requirements and regulations in order to avoid ac cidents must be kept All ope...

Page 8: ...part orders to specify article num ber as well as serial number of the respective transmitter or sensor This en sures correct and quick processing Fig 3 1 Transmitter nameplate This instruction manua...

Page 9: ...ten consent of the manufacturer will not be considered as use in accordance with the re quirements Damages resulting from this are left at user s risk The device is designed for a lifetime of approx 1...

Page 10: ...1 Transmitter Approval II 2 G Ex ib IIB WARNING The approval is only valid in connection with the respective indication on the transmitter or the sensor nameplate The OCM F Ex version is adjusted to t...

Page 11: ...ion for external level measurement and external set points 4 x digital input 1 compact Doppler active sensor type KDA connectable Outputs 3 x 0 4 20 mA load 500 Ohm 12 bit resolution accuracy better t...

Page 12: ...egulations safety of work materials and tools safety equipment and maintenance disposal of products laws on wastes disposal of materials laws on wastes cleaning cleansing agents and disposal environme...

Page 13: ...ork that the water contains particles which are able to reflect the ultrasonic signal sent by the sensor dirt particles gas bubbles or similar The OCM F utilises an active compact Doppler sensor Type...

Page 14: ...using Pressure The combi sensor type KDA additionally contains a hydrostatic level measure ment via integrated pressure measurement cell The piezo resistive pressure sensor operates according to the...

Page 15: ...flecting particles in relation to the acoustic source the frequency of the ultrasonic signal is shifted The resulting frequency shift is directly proportional to the particles movement within the medi...

Page 16: ...can be found on a weatherproof label on the bottom of the enclosure From this article key the type of device can be specified Fig 5 3 Type key for OCM F measurement transmitter OCF Type 00 Enclosure W...

Page 17: ...ormity All required steps to correctly install and to operate the measurement system are listed herein a OCM F transmitter a screwdriver with a 2 5 mm 0 098 in blade for connecting the sensor inside t...

Page 18: ...conceived for harsh industrial conditions Despite this do not expose them to heavy shocks or vibrations Transportation must be carried out in the original packaging 6 5 Return The units must be return...

Page 19: ...d personnel only Further statutory standards regulations and technical rulings have to be taken into account All outer circuits wires and lines connected to the device must have a minimum isolation re...

Page 20: ...ansmitter is provided with a protection foil for protection during transport and from scratches during assembly This pro tection foil has to be removed immediately after the assembly Clear view door T...

Page 21: ...m your body before touching the electronic modules of the unit such as circuit boards as well as their components To do so touch a grounded metallic surface such as the en closure frame or a metal pip...

Page 22: ...for this This screw must be screwed into the mounting plate protruding 4 mm 0 16 in Then hang the enclosure on the screw and additionally fix it with 2 more screws from the terminal clamp housing Ple...

Page 23: ...mping connection to ensure safe opening and a correct con nection All further clamps are tension spring clamps with screw clamps On power supply and relay clamps one copper wire with a maximum cross s...

Page 24: ...Instruction Manual OCM F Page 24 OCM F Rev 04 as of 18 02 2014 Fig 7 3 Clamp wiring OCM F...

Page 25: ...nsor cable has to be connected to the transmitter at the termination block using tension spring clamps or connectors with screw clamps depending on ver sion Lead the sensor cable from outside through...

Page 26: ...nnection socket for cable extension at the same time Please observe not to exceed the maximum cable length of 250 m 820 ft between KDA sensor and transmitter by taking the maximum permissible re sista...

Page 27: ...nected to the intrinsically safe terminal clamps Ex ia of the transmitter This would cancel the protection rating of the intrinsically safe terminal clamps 47 46 of the transmitter and thus invalidate...

Page 28: ...nsmitter with 24 V DC cannot be operated with alternating current just as it is impossible to operate a 230 V AC transmitter with direct current When operated with alternating current the direct curre...

Page 29: ...manual For effective protection of the OCM F transmitter it is necessary to protect power supply and mA inputs and outputs NIVUS recommends surge arrestors type EnerPro 220 Tr at 230 V AC or EnerPro 2...

Page 30: ...Instruction Manual OCM F Page 30 OCM F Rev 04 as of 18 02 2014 Fig 7 15 Connecting the overvoltage protection for power supply and analog inputs and outputs...

Page 31: ...elements as well as capacities and inductance of the KDA sensor ca ble shall be considered additionally The NIVUS cable lengths below are allowed for use in Ex areas unilateral overvoltage protection...

Page 32: ...tory requirement These signals have to be connected to the digital inputs 1 3 of the measurement transmitter Please note to select gold plated contacts in order to ensure contact reliability Connect a...

Page 33: ...find a detailed description of measurement and control sections in the Installation Instruction for Correlation and Doppler Sensors manual 1 Hand slide valve 2 Ultrasonic sensor P Series 3 Regulation...

Page 34: ...Instruction Manual OCM F Page 34 OCM F Rev 04 as of 18 02 2014 7 7 3 Connection for Controller Operation Fig 7 19 Wiring diagram for controller operation...

Page 35: ...ia the digital inputs always use all the 3 messages Activating one message only may result in disturbed regulator operation The regulator can be operated with external or internal set point External s...

Page 36: ...t be read thoroughly It is vital to read and comply with the safety instructions The OCM F must be wired in accordance with the wiring diagram see Fig 7 3 If any problems regarding installation connec...

Page 37: ...ions in case of absence of expert staff or if a setup and error protocol is required the programming should be carried out by the manufacturer or an expert company which is authorised by the manufactu...

Page 38: ...AR This menu is the most extensive of the OCM F It is for the com plete parameter setting of dimensions of the measurement place sensors analog and digital inputs and outputs and regulator func tion d...

Page 39: ...et values e g units m cm l s m s etc decrease values set decimal point left press once toggle between indication mode and overview menu main menu jump across in main or submenu jump across between ide...

Page 40: ...start subsequently The OCM F is ready for operation after approx 20 30 sec onds It is possible to save modified parameters at the end of the parameter setting procedure Entered parameters may be saved...

Page 41: ...tains the total flow values of the past 7 days see Fig 9 4 Presumed the transmitter was operated without any interruption in the past seven days Otherwise it shows the total for the uninterrupted days...

Page 42: ...nd time Selecting the menu will always indicate the latest last error message Browse through error messages using the keys left and right Pressing the ENTER key will delete all error messages one by o...

Page 43: ...Date of error message 5 Type of error error message Fig 9 6 Error message Remaining errors are NOT going to be written into the error memory anew if once they have been deleted As soon as the error o...

Page 44: ...the black scroll bar on the right hand side of the display Scroll through the menu using the up and down keys Info This point provides comprehensive information on unit type transmitter serial no and...

Page 45: ...nding on the unit system selected there are various units available Fig 9 11 Selecting the units Format Choose display formats for velocity and totals here The position of the decimal point can be def...

Page 46: ...ystem time This menu point is for indicating purposes only Hence the system time can not be adjusted here Modifications can be carried out in the individual menus set date and set time Fig 9 13 Select...

Page 47: ...arameter Menu Measurement Place This menu is one of the most important basic menus for parameter setting as the measurement place is going to be defined here The menu cannot be indicated completely du...

Page 48: ...ain the same movements as well if you move the cursor to the rightmost or leftmost edge of the table by using left or right As soon as the cursor has reached the rightmost or leftmost edge of the tabl...

Page 49: ...the options to select from choose Custom shape in this case Confirm with Enter After having custom shape selected first choose channel dimensions Channel dimensions Type in the respective channel dime...

Page 50: ...serves to suppress lowest movements or apparent volumes arising Used mainly to measure overflow volumes in constructions which are permanently flooded by receiving water Qmin measurement values lower...

Page 51: ...2 Parameter Menu Level Fig 9 25 Menu level measurement This menu defines any parameter regarding level measurement The start screen depicted below as well as the parameters to be set may vary dependin...

Page 52: ...ers for constantly full filled pipes and chan nels Such applications normally do not require level measurements The constant filling level must be set under value and is used for flow calculation This...

Page 53: ...y The transmitter will access only the clamps which have been programmed in the menu Due to this reason please observe correct sensor connection see chapter 7 4 2 Mounting height Only visible if senso...

Page 54: ...move the zero point of the external sensor Only visible if sen sor type no 3 or 4 is selected This value is set to 0 m 0 0 in as standard Damping This value is to damp a fluctuating signal of an exte...

Page 55: ...8 mm into the channel bottom see Installation Instruction for Correlation and Doppler Sensors Never countersink flow velocity sensors with integrated pressure measure ment cell into the channel botto...

Page 56: ...urement using an external signal such as flood messages or limit val ues for measurement start or similar Indicated as 0 l s inputs and outputs set will de energise Logic Toggle between inverse and no...

Page 57: ...ional to mean flow velocity averaged from measured individual velocities Temperature output of measured water temperature as analog signal Constant current calculates from the ratio between valid read...

Page 58: ...ty signal quality or tempera ture toggle between measurement ranges of 0 20 mA or 4 20 mA here Value at 0 mA Enter the measurement value at 0 m Value at 4 mA Enter the measurement value at 4 mA Exampl...

Page 59: ...oon as the function has been con firmed Pressing ENTER once more will deactivate the function again Leave this point by pressing ESC see Fig 9 41 All errors will be saved in the error memory see Chap...

Page 60: ...if level falls below a second limit value to be set Limit velocity Relay will energise if a velocity limit value to be set has been exceeded and will de energise if velocity falls below a second limi...

Page 61: ...ON and OFF delays as well as modifications of the name which might come into effect on the screen see Fig 9 46 Fig 9 46 Limit value parameter Switching mode It is possible to select between normally...

Page 62: ...lse duration e g in case of using slow SPS PLC inputs or sluggish mechanic counters Volume impulse Defines the impulse value The measured volume will be added internally until the value set has been r...

Page 63: ...red here Fig 9 50 Control unit settings Int Set point This parameter is to determine the internal flow set point in l s Min variation This parameter defines the permissible setpoint deviation of the c...

Page 64: ...inimum regulating time of a regulating unit in or der to ensure that calculated very short control impulses mechanically affect the regulating unit at all Hence the minimum control impulse duration sh...

Page 65: ...ON to the position it has whilst being in normal regulator mode h or Q quick close are the conditions for t quick close to switch t of Pos CLOSED This period is for error cases e g interrupted sensor...

Page 66: ...l system setting options are going to be revealed as soon as a spe cial code has been entered This parameter is reserved for NIVUS service personnel as the settings require comprehensive expert knowle...

Page 67: ...primarily serves in order to assess the parameter settings and for error diagnosis Fig 9 54 I O Menu 9 5 1 I O Menu Digital Inputs Digital input values routed to the transmitter input clamps can be v...

Page 68: ...l output condition of the relay contacts on the output clamps will not be displayed The only signal visible is the one the relay is receiving for output purposes External faulty wiring neither can be...

Page 69: ...am indicates the spreading of the investigated Doppler frequency Each bar peak represents a frequency group This is particularly important to assess and to choose measurement places as well as to find...

Page 70: ...ors Quality very good Frequency distribution very good Quality good Frequency distribution good Quality satisfactory Frequency distribution satisfactory Quality none Frequency distribution none Qualit...

Page 71: ...both relays Fig 9 63 Control unit selection 9 5 9 I O Menu Test control unit manual mode DANGER Caution Danger of injury The manual controller operation directly will access any following facility are...

Page 72: ...the pressure sensor to the zero point regularly recommended interval 6 months Required values have to be investigated with the sensor being removed if possible or if the water level is as low as possi...

Page 73: ...ity The value is set to 1 per default h crit Measuring the flow velocity is no longer possible as soon as the level falls be low a certain level called h_crit The level h_crit is pre determined by the...

Page 74: ...ctive Another option is to permanently operate using the values entered in Manning Strickler manual or Assistant automatic inactive Fig 9 69 Defining v crit Note Please avoid backwater up to levels of...

Page 75: ...y monitoring area see Fig 9 68 No 4 will be veri fied using this method Fig 9 71 Manning Strickler v crit determination Slope Enter the slope at measurement point in Strickler coefficient Enter the Ma...

Page 76: ...ensure free discharge then start level measurement with ENTER Fig 9 73 Assistant start measuring v crit determination The OCM executes the first level measurement in free discharge Measuring will take...

Page 77: ...High risk potential during simulation Due to the extremely high risk potential direct access to following plant sec tions as well as incalculable effects due to poor or faulty simulation NIVUS herewi...

Page 78: ...em of the facility This requires detailed preparation It is absolutely necessary to have a safety person available The following system must be set to manual operation mode Actuators or similar have t...

Page 79: ...m temperature by using the up and down arrow keys Pressing right or left will increase or decrease the simulated flow velocity or temperature value in steps of 1 cm or 0 1 C Using ENTER enables to ent...

Page 80: ...esent can be operated under Windows XP Vista and Win dows 7 32 Bit version If a warning should be displayed during installation click the Continue Any way button PC or Laptop are not capable of detect...

Page 81: ...ich have been modified in the unit varying from de fault using a file named CHGPARAM TXT Send parameters to device Sends previously saved parameters PARAM TXT to OCM F in case of acci dental system re...

Page 82: ...ase counter error messages PAR default measurement place name NIVUS profil round pipe x radius 0 45 3er egg radius 0 225 rectangular channel height 1 channel width 1 U profil channel height 1 radius 0...

Page 83: ...ng offset 0 005 constant level value 0 1 external sensor range 4 20 mA value at 0 4 mA 0 value at 20 mA 4 offset 0 damping 3 external sensor Ex value at 4 mA 0 value at 20 mA 4 offset 0 damping 3 velo...

Page 84: ...lue at 20 mA 0 8 m s errror mode inactive x active error input mask value in error case hold old value constant 0 mA x constant 3 6 mA constant 4 0 mA constant 20 475 mA digital outputs relay function...

Page 85: ...ot active internal set point active external set point active external set point range at 0 4 mA external set point range at 20 mA max flow rate 200 int set point flow 40 control deviation 5 cycle tim...

Page 86: ...control unit control unit test mode Parameter Menu CAL CAL default level calibration velocity min velocity 4 0000 max velocity 4 0000 calibration factor 1 0000 h crit 0 065 h crit min 0 auto dischar...

Page 87: ...default info 1 4 page 1 page 2 page 3 page 4 unit system metric x UK english US english units flow rate velocity level total display format velocity level total language Deutsch x english Fran ais Po...

Page 88: ...f measurement with pressure cell check compensation channel at sensor body for obstruc tions Remove yellow cap from filter element Check level measurement parameter Fixed value in case measuring in fu...

Page 89: ...rnal level signals Check for correct connection Check if cables are crushed for short circuits and improper resistive loads or current consumers without galvanic isolation Check measurement range and...

Page 90: ...d enabled as setpoint Relay outputs enabled Observe control ler status in I O menu Faulty mA output Connection Check connection clamps for correct wiring and polarity In case of using one or several o...

Page 91: ...s Chap 12 2 and 12 3 For initial assessment mainly the I O menu as well as the I key on the trans mitter are helpful Refer to chapter 11 to locate the most prominent errors 12 2 Verification of Combi...

Page 92: ...the channel This may lead to misadjustment of the 0 point or may even destroy the built in pressure sensor Furthermore never remove the ground plate risk of leakage or sensor destruc tion 12 3 Verific...

Page 93: ...or is obstructed due to build up or soiling to be removed as soon as the histogram indicates visible disturbances Another reason is that the sensor may have been installed at a hydraulically un favour...

Page 94: ...l as the according cycles depend on the following factors measurement principle of the level sensor material wear measurement medium and channel hydraulics general regulations for the operator of this...

Page 95: ...uminium plastic degree of protection IP54 Replacement filter ZUB0 FILTER02 with plug and connection hose for sensors with pressure measurement cell for connection PCM series transmitters as well as th...

Page 96: ...finish planed wood well joint 85 90 0 4 0 6 concrete good formwork high cement contents 80 0 8 rough non planed wood concrete pipes 75 1 5 hard burned bricks carefully joint well manufactured ashlar f...

Page 97: ...6 Fig 7 9 Connecting a NIVUS i Serial sensor for level measurement in Ex Zone 1 27 Fig 7 10 Connecting an ext 2 wire sensor Ex for flow level measurement 27 Fig 7 11 Connecting an external flow level...

Page 98: ...9 44 Relay outputs submenu 60 Fig 9 45 Error input mask 61 Fig 9 46 Limit value parameter 61 Fig 9 47 Impulse parameters impulse duration 62 Fig 9 48 Control unit basic settings 62 Fig 9 49 Setting th...

Page 99: ...78 Adjustment of analog outputs 77 Fig 9 79 Simulation of analog outputs 78 Fig 9 80 Relay simulation 79 Fig 9 81 Simulation mode 79 Fig 9 82 PaDa Installation Warning 80 Fig 9 83 PaDa English 80 Fig...

Page 100: ...eypad 37 L Language 45 Level Parameter 51 M Maintenance 94 Manning Strickler coefficients 96 Measurement Section 33 Mounting height 53 N Name of measurement place 47 Names 3 O Operating permits 12 Ope...

Page 101: ...nd Approvals The approvals are only valid in connection with the respective indication on the transmitter s nameplate The complete EC type examination certificates incl supplements can be downloaded f...

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