Operating Instructions TDR sensor for continuous level and interface measurement of liquids VEGAFLEX 81 4 … 20 mA/HART - four-wire Document ID: 41825
Quick start Quick start Mounting The quick start procedure enables a quick setup with many applications. You can find further information in the respective chapters of the operating instructions manual. 1. Distance from the metallic vessel wall > 300 mm. Distance from non-metallic vessel wall > 500 mm. The probe must not touch any installations or the vessel wall. 2. Place a metal sheet beneath the process fitting with non-metal vessels. 1 2 Fig.
Quick start 1. In this menu item you can select the application. You can choose between level and interface measurement. 2. In the menu item "Medium - Dielectric constant" you can define the medium type (medium). 3. Carry out the adjustment in the menu items "Min. adjustment" and "Max. adjustment". 4. A "Linearization" is required for all vessels in which the vessel volume does not increase linearly with the level - e.g. in a horizontal cylindrical or spherical tank. Activate the appropriate curve. 5.
Quick start 2. Select the parameter of the current output and the output characteristics in the menu item "Current output". You can find additional information in chapter "Parameter adjustment".
Contents 41825-EN-130314 Contents 1 About this document 1.1 Function.............................................................................. 7 1.2 Target group........................................................................ 7 1.3 Symbolism used.................................................................. 7 2 For your safety 2.1 Authorised personnel.......................................................... 8 2.2 Appropriate use..........................................................
Contents 9.6 9.7 9.8 Exchanging the cable/rod.................................................. 66 Software update................................................................ 68 How to proceed in case of repair....................................... 68 10 Dismounting 10.1 Dismounting steps............................................................. 70 10.2 Disposal............................................................................ 70 11 Supplement 11.1 Technical data........................
1 About this document 1 About this document 1.1 Function 1.2 Target group 1.3 Symbolism used This operating instructions manual provides all the information you need for mounting, connection and setup as well as important instructions for maintenance and fault rectification. Please read this information before putting the instrument into operation and keep this manual accessible in the immediate vicinity of the device. This operating instructions manual is directed to trained specialist personnel.
2 For your safety 2 2.1 For your safety Authorised personnel All operations described in this operating instructions manual must be carried out only by trained specialist personnel authorised by the plant operator. During work on and with the device the required personal protective equipment must always be worn. 2.2 Appropriate use VEGAFLEX 81 is a sensor for continuous level measurement. You can find detailed information on the application range in chapter "Product description".
2 For your safety Electromagnetic compatibility Instruments with plastic housing as well as in four-wire or Ex-d-ia version are designed for use in an industrial environment. Nevertheless, electromagnetic interference from electrical conductors and radiated emissions must be taken into account, as is usual with a class A instrument according to EN 61326-1. If the instrument is used in a different environment, the electromagnetic compatibility to other instruments must be ensured by suitable measures. 2.
3 Product description 3 Type plate Product description 3.1 Configuration The nameplate contains the most important data for identification and use of the instrument: 1 16 15 2 3 14 4 5 6 7 8 9 13 12 11 10 Fig.
3 Product description Versions The instrument can be supplied in two different electronics versions. Each electronics version can be identified via the product code on the type label as well as on the electronics. • • Standard electronics with operating voltage 90 … 253 V AC; 50/60 Hz: Typ FX80B.Standard electronics with supply voltage 9.6 … 48 V DC; 20 … 42 V AC: Type FX80I.
3 Product description 1 d h Fig. 5: Level measurement 1 d h Sensor reference plane (seal surface of the process fitting) Distance to the interface (HART value 1) Height - Level Probe end tracking To increase sensitivity, the probe is equipped with probe end tracking. In products with a low dielectric constant, this function is very helpful. This is the case, for example, in plastic granules, packing chips or in fluidized vessels. Between a dielectric constant of 1.
3 Product description h2 h1 L3 d2 L2 TS 1 d1 L1 Fig.
3 Product description For the interface measurement, you can select the requested output signal with the setup. Packaging 3.3 Packaging, transport and storage Your instrument was protected by packaging during transport. Its capacity to handle normal loads during transport is assured by a test based on ISO 4180. The packaging of standard instruments consists of environmentfriendly, recyclable cardboard. For special versions, PE foam or PE foil is also used.
3 Product description External display and adjustment unit VEGADIS 61 is an external display and adjustment unit for sensors with single chamber housing and Ex-d double chamber housing. It is suitable for measured value indication and adjustment of plics® sensors and is connected to the sensor with a four-wire standard cable up to 50 m (164 ft) long. You can find further information in the operating instructions "VEGADIS 61" (Document-ID 27720).
3 Product description The extensions are available in the following lengths: Rod: ø 12 mm (0.472 in) • Basic segments: 20 … 5900 mm (0.79 … 232 in) • Rod segments: 20 … 5900 mm (0.79 … 232 in) • Curved segments: 100 x 100 mm (3.94 … 3.94 in) You can find further information in the operating instructions manual "Rod extension VEGAFLEX series 80". Bypass tube The combination of a bypass tube and a VEGAFLEX 81 enables continuous level measurement outside the vessel.
4 Mounting 4 Screwing in Mounting 4.1 General instructions With instruments with threaded process fitting, suitable tools must be applied for tightening the hexagon. Warning: The housing must not be used to screw the instrument in! Applying tightening force can damage internal parts of the housing. Moisture Use the recommended cables (see chapter "Connecting to power supply") and tighten the cable gland.
4 Mounting sible. The exact value of the min. distance (lower dead band) is stated in chapter "Technical data". Fig. 7: Vessel with conical bottom Type of vessel Plastic vessel/Glass vessel The guided microwave principle requires a metal surface on the process fitting. Therefore use in plastic vessels etc. an instrument version with flange (from DN 50) or place a metal sheet (ø > 200 mm/8 in) beneath the process fitting when screwing it in.
4 Mounting Higher sockets or sockets with a bigger diameter can generally be used. They simply increase the upper blocking distance. Check if this is relevant for your measurement. In such cases, always carry out a false signal suppression after installation. You can find further information under "Setup procedure". d d h _ 150 < _ 100 < h DN40 ... DN150 > DN150 ... DN200 Fig. 9: Mounting socket When welding the socket, make sure that the socket is flush to the vessel top. 1 2 Fig.
4 Mounting Fig. 11: Mounting of the sensor with inflowing medium Measuring range The reference plane for the measuring range of the sensors is the sealing surface of the thread or flange. Keep in mind that a min. distance must be maintained below the reference plane and possibly also at the end of the probe - measurement in these areas is not possible (dead band). The length of the cable can be used all the way to the end only when measuring conductive products.
4 Mounting Keep in mind that buildup can form on the spacers. Strong buildup can influence the measurement. 1 2 3 Fig. 12: Position of the spacer or centering weight 1 2 3 Rod probe with spacer (PEEK) Cable probe with centering weight Spacer (PEEK) on the gravity weight of a cable probe Note: Measurement in a standpipe is not recommended for extremely adhesive products.
4 Mounting Let the probe length determine automatically by the instrument to compensate the resulting running time changes. The determine probe length can deviate from the actual probe length when using bow-shaped segments. Make sure that the rod of the probe is at least 300 mm (11.811 in) away from the vessel wall You can find further information in the supplementary instructions of the rod extension.
5 Connecting to power supply 5 Safety instructions Voltage supply via mains voltage Connecting to power supply 5.1 Preparing the connection Always keep in mind the following safety instructions: • • Connect only in the complete absence of line voltage If overvoltage surges are expected, overvoltage arresters should be installed In this case, the instrument is designed in protection class II.
5 Connecting to power supply suppressed, but the protective effect against high frequency interference signals remains. Warning: Significant potential differences exist inside galvanization plants as well as on vessels with cathodic corrosion protection. Considerable equalisation currents can flow over the cable screen if the screen is grounded on both ends. To avoid this in such applications, the cable screen must be connected to ground potential only at one end (in the switching cabinet).
5 Connecting to power supply Fig. 13: Connection steps 5 and 6 6. Insert the wire ends into the terminals according to the wiring plan Information: Solid cores as well as flexible cores with wire end sleeves are inserted directly into the terminal openings. In case of flexible cores without end sleeves, press the terminal head with a small screwdriver; the terminal opening is freed. When the screwdriver is released, the terminal closes again. You can find further information on the max.
5 Connecting to power supply 5.3 Electronics compartment Wiring plan, double chamber housing The following illustrations apply to the non-Ex as well as to the Ex-d version. 2 4...20mA (+)1 2(-) 5 7 8 6 1 Fig. 14: Electronics compartment, double chamber housing 1 2 Information: The connection of an external display and adjustment unit is not possible with this double chamber housing. 2(-) 5 common (+)1 IS GND power supply active 4...
5 Connecting to power supply Terminal Function 8 Function ground with installation according to CSA Connection compartment with low voltage Polarity common 2(-) IS GND (+)1 active power supply passive 4...20mA 5 6 7 8 /L /N Fig.
6 Set up with the display and adjustment module 6 6.1 Set up with the display and adjustment module Insert display and adjustment module The display and adjustment module can be inserted into the sensor and removed any time. Four positions displaced by 90° can be selected. It is not necessary to interrupt the power supply. Proceed as follows: 1. Unscrew the housing cover 2. Place the display and adjustment module in the requested position onto the electronics and turn to the right until it snaps in 3.
6 Set up with the display and adjustment module 1 2 Fig. 18: Insertion of the display and adjustment module with double chamber housing 1 2 In the electronics compartment In the connection compartment (with Ex-d-ia version not possible) Note: If you intend to retrofit the instrument with a display and adjustment module for continuous measured value indication, a higher cover with an inspection glass is required. 6.2 Adjustment system 1 2 41825-EN-130314 Fig.
6 Set up with the display and adjustment module • • • –– Save value [->] key: –– Presentation change measured value –– Select list entry –– Select editing position [+] key: –– Change value of the parameter [ESC] key: –– interrupt input –– Jump to next higher menu Adjustment system The sensor is adjusted via the four keys of the display and adjustment module. The LC display indicates the individual menu items. The functions of the individual keys are shown in the above illustration. Approx.
6 Set up with the display and adjustment module You can find "Extended adjustment" in the next sub-chapter. General information Measurement loop name In the first menu item you can assign a suitable measurement loop name. You can enter a name with max. 19 characters. Product type In the next menu item you can see which product type the instrument is suitable for. If your instrument is only suitable for a certain medium, this menu item is not visible.
6 Set up with the display and adjustment module reference plane (seal surface of the process fitting). Keep in mind that the max. level must lie below the dead band. Min. adjustment In this menu item, you can enter the min. adjustment for the level. Enter the suitable distance value in m for the empty vessel (e.g. distance from the flange to the probe end) corresponding to the percentage value. The distance refers tot he sensor reference plane (seal surface of the process fitting). Max.
6 Set up with the display and adjustment module The instrument carries out an automatic false signal suppression as soon as the probe is uncovered. The false signal suppression is always updated. 6.4 Parameter adjustment - Extended adjustment For technically demanding measurement loops you can carry out extended settings in "Extended adjustment". Main menu The main menu is divided into five sections with the following functions: Setup: Settings, e.g.
6 Set up with the display and adjustment module Setup - Units In this menu item you select the distance unit and the temperature unit. With the distance units you can choose between m, mm and ft and with the temperature units betwenn °C, °F and K. Setup - Probe length In this menu item you can enter the probe length or have the length determined automatically by the sensor system. When choosing "Yes", then the probe length will be determined automatically.
6 Set up with the display and adjustment module Setup - Application - Medium, dielectric constant In this menu item, you can define the medium type (product). This menu item is only available if you have selected level measurement under the menu item "Application".
6 Set up with the display and adjustment module Enter the appropriate distance value in m (corresponding to the percentage value) for the full vessel. The distance refers to the sensor reference plane (seal surface of the process fitting). Keep in mind that the max. level must lie below the dead band. Setup - Min. adjustment Level In this menu item you can enter the min. adjustment for the level. With interface measurement this is the minimum total level.
6 Set up with the display and adjustment module For the full vessel, enter the distance value in m matching the percentage value. Setup - Min. adjustment Interface This menu item is only available if you have selected interface measurement under the menu item "Application". If you have selected "Yes" in the previous menu item (accept adjustment of the level measurement), the current setting will be displayed.
6 Set up with the display and adjustment module be displayed in percent but e.g. in l or kg, a scaling can be also set in the menu item "Display". Caution: Note the following, if the respective sensor is used as part of an overfill protection system according to WHG: If a linearization curve is selected, the measuring signal is no longer linearly proportional to the level. This must be taken into consideration by the user, particularly when setting the switching point on the limit signal indicator.
6 Set up with the display and adjustment module You can accept the scaling of the level measurement also for the interface measurement. If you select "Yes", the current setting is displayed. 41825-EN-130314 If you have selected "No", you can enter the scaling for the interface separately. Setup - Scaling Interface (2) In menu item "Interface (2)" you define the scaling format on the display and the scaling of the interface measured value for 0 % and 100 %.
6 Set up with the display and adjustment module The default setting is min. current 3.8 mA and max. current 20.5 mA. Setup - HART variables (1) Since the HART variables are very extensive, the indication was divided into two menu items. In the menu "HART variables 1" you can have the first HART value PV (primary value) and the second HART value SV (secondary value) of the sensor displayed. The values cannot be changed in the display and adjustment module.
6 Set up with the display and adjustment module Enter the actual distance from the sensor to the product surface. All interfering signals in this section are detected by the sensor and stored. Note: Check the distance to the product surface, because if an incorrect (too large) value is entered, the existing level will be saved as a false echo. The filling level would then no longer be detectable in this area.
6 Set up with the display and adjustment module Display - Menu language This menu item enables the setting of the requested national language. In the delivery status, the sensor is set to the ordered national language. Display - Displayed value 1 In this menu item, you define the indication of the measured value on the display. You can display two different measured values. In this menu item, you define measured value 1. The default setting for the displayed value 1 is "Filling height Level".
6 Set up with the display and adjustment module urement are displayed in addition to the peak values of the level measurement. In another window you can carry out a reset of the two peak values separately. Diagnostics - Peak values The respective min. and max. measured values are saved in the Measurement certainty sensor. The two values are displayed in the menu item "Peak values, measurement certainty". The measurement can be influenced by the process conditions.
6 Set up with the display and adjustment module Diagnostics - Echo curve The menu item "Echo curve" shows the signal strength of the echoes over the measuring range in V. The signal strength enables an evaluation of the quality of the measurement. With the following functions you can zoom part sections of the echo curve. • • • Diagnosis - Simulation "X-Zoom": Zoom function for the meas.
6 Set up with the display and adjustment module Parameter settings for recording the echo curve and the settings of the echo curve itself can be carried out in the adjustment software PACTware. With the adjustment software PACTware and the PC the high-resolution echo curve can be displayed and used later on to assess the quality of the measurement. With the menu item "Setup" the echo curve it is possible to save at the time of setup.
6 Set up with the display and adjustment module The following reset functions are available: Delivery status: Restoring the parameter settings at the time of shipment from the factory incl. the order-specific settings. A created false signal suppression, user-programmable linearization curve as well as the measured value memory will be deleted. Basic settings: Resetting the parameter settings incl. special and laboratory parameters to the default values of the respective instrument.
6 Set up with the display and adjustment module Menu Menu item Additional settings PIN Default value 0000 Probe type Like order HART mode Address 0 - Analogue current output with HART Additional adjustments - The instrument settings are copied with this function.
6 Set up with the display and adjustment module Additional adjustments HART mode The sensor offers the HART modes "Analogue current output" and "Fix current (4 mA)". In this menu item you determine the HART mode and enter the address with Multidrop mode. In the mode "Fixed current output" up to 63 sensors can be operated on one two-wire cable (Multidrop operation). An address between 0 and 63 must be assigned to each sensor.
6 Set up with the display and adjustment module Info - Sensor characteristics In this menu item, the features of the sensor such as approval, process fitting, seal, measuring range, electronics, housing and others are displayed. 6.5 Saving the parameter adjustment data We recommended noting the adjusted data, e.g. in this operating instructions manual, and archiving them afterwards. They are thus available for multiple use or service purposes.
7 Setup with PACTware 7 Via the interface adapter directly on the sensor Setup with PACTware 7.1 Connect the PC 2 1 3 Fig. 20: Connection of the PC directly to the sensor via the interface adapter 1 2 3 Connection via HART USB cable to the PC Interface adapter VEGACONNECT 4 Sensor Information: The interface adapter VEGACONNECT 3 is not suitable for connection to the sensor. 2 5 4 USB N OPE 3 TWIST LO CK 1 Fig.
7 Setup with PACTware Note: With power supply units with integrated HART resistance (internal resistance approx. 250 Ω), an additional external resistance is not necessary. This applies, e.g. to the VEGA instruments VEGATRENN 149A, VEGAMET 381 and VEGAMET 391). Commercially available Ex separators are also usually equipped with sufficient current limitation resistance. In such cases, VEGACONNECT 4 can be connected parallel to the 4 … 20 mA cable. Prerequisites 7.
7 Setup with PACTware all functions for complete setup are already included. An assistant for simple project configuration simplifies the adjustment considerably. Saving/printing the project as well as import/export functions are also part of the standard version. In the full version there is also an extended print function for complete project documentation as well as a save function for measured value and echo curves.
7 Setup with PACTware Extended adjustment With the extended adjustment, you carry out the parameter adjustment for the instrument via the clear menu structure in the DTM (Device Type Manager). This enables additional and special settings over and above those offered by quick setup. Maintenance Under the menu item "Maintenance" you get comprehensive and important support for servicing and maintenance. You can call up diagnostic functions and carry out an electronics exchange or a software update.
7 Setup with PACTware Information: In special cases you can change the medium type. This setting can be changed under "Extended adjustment". Application In this field you can select the application you want to use your instrument for.
7 Setup with PACTware Adjustment for the level and interface measurement If you have selected interface measurement in the previous menu, then you can enter the values for the min. and max. adjustment of level and interface or accept the values of the level measurement. The entered value refers to the distance from the sealing surface of the process fitting (sensor reference plane) to the total level or interface.
7 Setup with PACTware instrument parameter adjustment. The complete data set is downloaded from the device. This procedure can last several minutes. Create instrument documentation? This function is used to print or create a PDF file of the current parameter adjustment. To read the PDF file, you need a suitable program (for example Acrobat Reader). To print or create the PDF file, all data are downloaded from the device. For this function, the full version of the DTM Collection is required.
8 Set up with other systems 8 8.1 Set up with other systems DD adjustment programs Device descriptions as Enhanced Device Description (EDD) are available for DD adjustment programs such as, for example, AMS™ and PDM. The files can be downloaded at www.vega.com/downloads under "Software". 8.2 Communicator 375, 475 41825-EN-130314 Device descriptions for the instrument are available as DD or EDD for parameter adjustment with the Field Communicator 375 or 475.
9 Diagnostics and service 9 Diagnostics and service 9.1 Maintenance 9.2 Diagnosis memory If the device is used correctly, no maintenance is required in normal operation. The instrument has several memories which are available for diagnosis purposes. The data remain even with voltage interruption. Measured value memory Up to 100,000 measured values can be stored in the sensor in a ring memory. Each entry contains date/time as well as the respective measured value.
9 Diagnostics and service • Display and adjustment module • • • PC with PACTware/DTM Control system with EDD Display and adjustment module Further echo curves: Up to 10 echo curves can be stored in a ring buffer in this memory section. Further echo curves are stored via: 9.3 Status messages The instrument features self-monitoring and diagnostics according to NE 107 and VDI/VDE 2650.
9 Diagnostics and service This status message is inactive by default. It can be activated by the user via PACTware/DTM or EDD. Failure The following table shows the error codes in the status message "Failure" and gives information on the reason and rectification. Keep in mind that some information is only valid with four-wire instruments.
9 Diagnostics and service Code Cause Rectification F260 –– Error in the calibration carried out in the factory –– Error in the EEPROM –– Exchanging the electronics –– Send instrument for repair F261 Error in the instrument settings –– Error during setup –– Error when carrying out a reset –– False signal suppression faulty –– Carry out a reset –– Repeat setup F264 –– Error during setup –– Check or correct installation and/or parameter adjustment –– Check probe length F265 –– Sensor no longer ca
9 Diagnostics and service Code Cause Rectification S601 –– Level echo in the close range not available –– Reduce level –– 100 % adjustment: Increase value –– Check mounting socket –– Remove possible interfering signals in the close range –– Use coaxial probe S602 –– Compensation echo super- –– 100 % adjustment: Increase imposed by medium value S603 –– Operating voltage below specified range Text message Overfilling Level within the search range, compensation echo Impermissible operating voltage
9 Diagnostics and service Code Cause Rectification M505 –– Sensor does not detect an echo during operation –– Check and correct installation and/or parameter adjustment –– Process component or probe contaminated or defective –– Clean or exchange process component or probe M506 –– Error during setup –– Check and correct installation and/or parameter adjustment –– Check probe length M507 –– Error during setup –– Error when carrying out a reset –– False signal suppression faulty –– Carry out reset
9 Diagnostics and service Error Cause –– Check connection according to chapter "Connection steps" and if necessary, correct according to chapter "Wiring plan" –– Voltage supply missing –– Check cables for breaks; repair if necessary –– Operating voltage too low or load resistance too high –– Check, adapt if necessary –– Electronics module in the sensor defective –– Exchange the instrument or send it in for repair Current signal greater than 22 mA or less than 3.
9 Diagnostics and service 2. Measured value jumps towards 100 % Error pattern Level Fault description 0 time Cause Rectification –– Due to the process, the amplitude of the product echo sinks –– A false signal suppression was not carried out –– Carry out false signal suppression –– Amplitude or position of a false signal has changed (e.g. buildup); false signal suppression no longer matches –– Determine the reason for the changed false signals, carry out false signal suppression, e.g.
9 Diagnostics and service Reaction after fault rectification Depending on the reason for the fault and the measures taken, the steps described in chapter "Setup" must be carried out again or must be checked for plausibility and completeness. 24 hour service hotline Should these measures not be successful, please call in urgent cases the VEGA service hotline under the phone no. +49 1805 858550. The hotline is also available outside the normal working hours on seven days a week around the clock.
9 Diagnostics and service Fig. 34: Exchange cable or rod Information: Please keep the stated torque so that the max. tensile strength remains. Shorten cable/rod The rod or cable of the probe can be shortened individually. 1. Mark the requested length with mounted measuring rod. 2. Cable: Loosen the pins on the gravity weight (hexagon 3) 3. Cable: remove the pins 4. Cable: Pull the cable out of the gravity weight 5. Shorten the cable/rod with a cut-off wheel or metal saw at the marking.
50 mm (1.97") 25 mm (0.98") 1 100 mm (3.94") 45 mm (1.77") 9 Diagnostics and service A B 2 2 1 4 C 3 Fig. 35: Shortening the cable probe A B C 1 2 3 Gravity weight - cable ø 4 mm Gravity weight - cable ø 2 mm Centering weight - cable ø 2 mm Pins Thread M8 for eye-bolt Fixing screw - centering weight 9.
9 Diagnostics and service • • 41825-EN-130314 • Clean the instrument and pack it damage-proof Attach the completed form and, if need be, also a safety data sheet outside on the packaging Please contact for the return shipment the agency serving you. You can find the agency on our home page www.vega.com.
10 Dismounting 10 Dismounting 10.1 Dismounting steps Warning: Before dismounting, be aware of dangerous process conditions such as e.g. pressure in the vessel, high temperatures, corrosive or toxic products etc. Take note of chapters "Mounting" and "Connecting to power supply" and carry out the listed steps in reverse order. 10.2 Disposal The instrument consists of materials which can be recycled by specialised recycling companies.
11 Supplement 11 Supplement 11.1 Technical data General data 316L corresponds to 1.4404 or 1.4435 Materials, wetted parts ƲƲ Process fitting (version up to 6 bar) 316L and PPS GF 40 ƲƲ Process seal on the instrument side (cable/rod leadthrough) FKM (SHS FPM 70C3 GLT), FFKM (Kalrez 6375), EPDM (A+P 75.5/KW75F), silicone FEP coated (A+P FEP-O-SEAL) ƲƲ Process fitting (version up to 40 bar) ƲƲ Process seal 316L and Aluminium oxide-ceramic 99.7 % (Al2O3), Hastelloy C22 (2.
11 Supplement Weight ƲƲ Instrument weight (depending on process fitting) approx. 0.8 … 8 kg (0.176 … 17.64 lbs) ƲƲ Rod: ø 12 mm (0.472 in) approx. 900 g/m (9.68 oz/ft) ƲƲ Rod: ø 8 mm (0.315 in) approx. 400 g/m (4.3 oz/ft) ƲƲ Cable: ø 2 mm (0.079 in) approx. 16 g/m (0.17 oz/ft) ƲƲ Cable: ø 4 mm (0.157 in) ƲƲ Gravity weight for cable ø 2 mm (0.079 in) approx. 60 g/m (0.65 oz/ft) 100 g (3.22 oz) ƲƲ Gravity weight for cable ø 4 mm (0.157 in) 200 g (6.43 oz) ƲƲ Centering weight ø 45 mm (1.
11 Supplement ƲƲ Cable probes εr ≥ 1.6 ƲƲ Rod probes εr ≥ 1.6 1 1 4 4 2 2 3 3 5 5 Fig.
11 Supplement ƲƲ Third HART value (TV) ƲƲ Fourth HART value (QV) Measurement certainty, level Electronics temperature Indication value - DIsplay and adjustment module2) ƲƲ Displayed value 1 ƲƲ Displayed value 2 Resolution, digital Filling height - Level Electronics temperature < 1 mm (0.039 in) Accuracy (according to DIN EN 60770-1) Process reference conditions according to DIN EN 61298-1 ƲƲ Temperature +18 … +30 °C (+64 … +86 °F) ƲƲ Air pressure +860 … +1060 mbar/+86 … +106 kPa (+12.5 … +15.
11 Supplement L 15 mm (0.591") 2 mm (0.079") 0 -2 mm (-0.079") -10 mm (-0.394") 1 0,08 m (3.15") 0,3 m (11.811") 0,02 m (0.787") Fig. 37: Deviation VEGAFLEX 81 in rod version in water 1 L Dead band - no measurement possible in this area Probe length L 15 mm (0.591") 2 mm (0.079") 0 -2 mm (-0.079") -10 mm (-0.591") 1 1 0,15 m (5.906") 0,3 m (11.811") 0,07 m (2.756") 0,05 m (1.97") Fig.
11 Supplement L 15 mm (0.591") 2 mm (0.079") 0 -2 mm (-0.079") 10 mm (0.394") 1 0,08 m (3.15") 0,1 m (3.94") 0,3 m (11.811") Fig. 39: Deviation VEGAFLEX 81 in cable version in water 1 L Dead band - no measurement possible in this area Probe length L 15 mm (0.591") 2 mm (0.079") 0 -2 mm (-0.079") -15 mm (-0.591") 1 1 0,15 m (5.906") 0,3 m (11.811") 0,05 m (1.969") 0,08 m (3.15") Fig. 40: Deviation VEGAFLEX 81 in cable version ø 2 mm (0.
11 Supplement L 20 mm (0.787") 15 mm (0.591") 2 mm (0.079") 0 -2 mm (-0.079") -15 mm (-0.591") 1 1 0,15 m (5.906") 0,3 m (11.811") 0,05 m (1.969") 0,15 m (5.906") Fig. 41: Deviation VEGAFLEX 81 in cable version ø 4 mm (0.157 in), in oil 1 L Dead band - no measurement possible in this area Probe length Repeatability ≤ ±1 mm Variables influencing measurement accuracy Specifications for the digital measured value Temperature drift - Digital output ±3 mm/10 K relating to the max.
11 Supplement Gas phase Air Hydrogen Steam (saturated steam) Temperature Pressure 1 bar (14.5 psig) 10 bar (145 psig) 50 bar (725 psig) 20 °C/68 °F 0.00 % 0.22 % 1.2 % 200 °C/392 °F -0.01 % 0.13 % 0.74 % 400 °C/752 °F -0.02 % 0.08 % 0.52 % 20 °C/68 °F -0.01 % 0.10 % 0.61 % 200 °C/392 °F -0.02 % 0.05 % 0.37 % 400 °C/752 °F -0.02 % 0.03 % 0.25 % 100 °C/212 °F 0.26 % - - 180 °C/356 °F 0.17 % 2.1 % - 264 °C/507 °F 0.12 % 1.44 % 9.2 % 366 °C/691 °F 0.07 % 1.01 % 5.
11 Supplement ƲƲ FFKM (Kalrez 6375) - with temperature adapter -20 … +200 °C (-4 … +392 °F) 1 80°C (176°F) 3 4 65°C (149°F) 0°C (32°F) -40°C (-104°F) 2 80°C (176°F) 130°C (266°F) 150°C (302°F) -40°C (-104°F) Fig.
11 Supplement Electromechanical data - version IP 66/IP 67 Options of the cable entry ƲƲ Cable gland ƲƲ Cable diameter (options) ƲƲ Cable entry ƲƲ Blind plug Plug options M20 x 1.5 5 … 9 mm (0.20 … 0.35 in) 6 … 12 mm (0.24 … 0.47 in) 10 … 14 mm (0.39 … 0.55 in) ½ NPT M20 x 1.5; ½ NPT ƲƲ Supply and signal circuit (only with low M12 x 1 plug voltage) ƲƲ Indication circuit M12 x 1 plug ƲƲ Massive wire, cord 0.2 … 2.
11 Supplement Max. power consumption Electrical protective measures Protection rating Overvoltage category Protection class 4 VA; 2.1 W IP 66/IP 67 III I Approvals Instruments with approvals can have different technical data depending on the version. For that reason the associated approval documents of these instruments must be carefully noted. They are part of the delivery or can be downloaded under www.vega.com and "VEGA Tools" as well as under "Downloads" and "Approvals". 11.
11 Supplement G¾, ¾ NPT, G1, 1 NPT, G1½, 1½ NPT 22 mm (0.87") 22 mm (0.87") SW 36 (1.42") (G¾, ¾ NPT) SW 41 (1.61") (G1, 1 NPT) SW 46 (1.81") (G1½, 1½ NPT) 96 mm (3.78") 46 mm (1.81") VEGAFLEX 81, cable version with gravity weight L L ø 4 mm (0.16") ø 16 mm (0.63") ø 20 mm (0.79") 1 100 mm (3.94") 50 mm (1.97") ø 2 mm (0.08") 100 mm (3.94") ø 4 mm (0.16") ø 16 mm (0.63") ø 16 mm (0.63") ø 20 mm (0.79") ø 20 mm (0.79") 2 3 Fig.
11 Supplement 46 mm (1.81") VEGAFLEX 81, cable version with centering weight 22 mm (0.87") SW 36 (1.42") (G¾, ¾ NPT) SW 41 (1.61") (G1, 1 NPT) SW 46 (1.81") (G1½, 1½ NPT) G¾, ¾ NPT, G1, 1 NPT, G1½, 1½ NPT 30 mm (1.18") 30 mm (1.18") ø 2 mm (0.08") L ø 4 mm (0.16") X X 1 2 Fig. 46: VEGAFLEX 81, threaded version L x 41825-EN-130314 1 2 Sensor length, see chapter "Technical data" ø 40 mm (1.57 in) ø 45 mm (1.77 in) ø 75 mm (2.95 in) ø 95 mm (3.74 in) Cable version ø 2 mm (0.
11 Supplement G1½, 1½ NPT ø 8 mm (0.32") 1 L L G¾, ¾ NPT, G1, 1 NPT, G1½, 1½ NPT 51 mm (2.01") SW 55 mm (2.17") 22 mm (0.87") SW 36 (1.42") (G¾, ¾ NPT) SW 41 (1.61") (G1, 1 NPT) SW 46 (1.81") (G1½, 1½ NPT) 30 mm (1.18") 46 mm (1.81") VEGAFLEX 81, rod version ø 12¨mm (0.47") 2 Fig. 47: VEGAFLEX 81, threaded version L 1 2 Sensor length, see chapter "Technical data" Rod version ø 8 mm (0.315 in) Rod version ø 12 mm (0.
11 Supplement 11.3 Industrial property rights VEGA product lines are global protected by industrial property rights. Further information see www.vega.com. Only in U.S.A.: Further information see patent label at the sensor housing. VEGA Produktfamilien sind weltweit geschützt durch gewerbliche Schutzrechte. Nähere Informationen unter www.vega.com. Les lignes de produits VEGA sont globalement protégées par des droits de propriété intellectuelle. Pour plus d'informations, on pourra se référer au site www.
INDEX INDEX A Accessories ––Display and adjustment module 14 ––External display and adjustment unit 15 ––External radio unit 15 ––Flanges 15 ––Interface adapter 14 ––Protective cover 15 Adjustment ––Max. adjustment 35, 36 ––Min.
INDEX Q Quick setup 31 R Read out info 48 Repair 68 Replacement parts ––Bypass 16 ––Display and adjustment module with heating 15 ––Electronics module 15 ––Rod extension 15 ––Spacer 16 Reset 45 S Scaling measured value 38, 39 Sensor characteristics 49 Sensor status 42 Service hotline 66 Shielding 23 Simulation 44 Special parameters 47 Status messages 59 Storage 14 T Type plate 10 U Units 34 V 41825-EN-130314 Voltage supply 23, 80 VEGAFLEX 81 • 4 … 20 mA/HART - four-wire 87
All statements concerning scope of delivery, application, practical use and operating conditions of the sensors and processing systems correspond to the information available at the time of printing. Subject to change without prior notice © VEGA Grieshaber KG, Schiltach/Germany 2013 VEGA Grieshaber KG Am Hohenstein 113 77761 Schiltach Germany Phone +49 7836 50-0 Fax +49 7836 50-201 E-mail: info.de@vega.com www.vega.
