Ultrasonic Sensor (HART)

Transcription

1 Characteristics LEVEL - DISTANCE - MODULAR - ECONOMIC - Input: - Ranges - Output: - Voltage supply: - Accuracy: - Process connection: - Electrical connection: - Temperature range: - Limit value contacts: - Adjustment: - Material: Ultrasonic echo up to ma (HART), -wire system VDC ±0% see technical details M0x,5 / M8x M male, 8-pole C (operating temperature) electronically (NPN / PNP) keys / software Standard: stainless steel / Option: synthetic Technical Data Input Signal: Ranges: Ultrasonic echo Type 9-0: (minimum range: 0 ) Type 9-60: (minimum range: 800 ) Type 9-50: (minimum range: 00 ) Attention: Plastic as material option can cause deviations from the listed ranges. Emitting angle: 8 Output Current signal: Current range: Signal on error: Performance Ultrasonic sensor:...0 ma with superimposed counication signal HART, -wire system,8...0,5 ma,6 ma (sensor short circuit, underflow) ma (sensor break, sensor open circuit, overflow) Linearity deviation: Repeatability: Temperature compensation: Response time t90: Reference temperature: Type 9-0: <0,% Type 9-60: <0,5% Type 9-50: <0,5% Type 9-0: ±, ±0,% Type 9-60: ±, ±0,% Type 9-50: ±, ±0,% available Typ 9-0: 00 ms Typ 9-60: 0 ms Typ 9-50: 700 ms 5 C Applications The is suitable for distance and level measurement, belt tension control or presence recognition. With it s two configurable limit value contacts and the integrated display, the ultrasonic sensor is also suitable for applications with higher requirements. Page-

2 Technical Data (Continued) Performance (Continued) Measuring amplifier: Accuracy: 0,% of range Resolution: 6 Bit Filter setting: s Transmission behaviour: linear with distance Measuring rate: 0 measurements / s Adjustment: keys on display / via software (HART counication) Turn-on delay time: <5 s Response time: 0 ms Indicator / limit values: Indication Display: Head of display: Memory: Indication: Decimal point: Limit Contacts Electronically: Indication: Voltage across: Settings: Setting range: Switching delay: Failsafe function: Galvanical insulation: Supply Voltage: Current consumption: Reverse battery protection: Ambient Conditions Temperature: Water, water vapour: Mechanics Dimensions: Process connection: Electrical connection: Material: Weight: Fitting position: System pressure: Protection of device: Resolution: Error of measurement: Temperature drift: digit ±0,% of range, ± digit 00 ppm/k 7 segment, 8,5, red, digits, representation mirror-inverted 80 possible rotatable approx. 0 minimum / maximum values - measuring value - unit of measurement - control menu automatically or manually, dependent on measuring range / unit x PNP or NPN (0 VDC, 00 ma) Option: x PNP or NPN (0 VDC, 000 ma) LED red for each limit value < V with keys (TouchM-Technology) switch point and hysteresis: any value within measuring range 0, ,9 s adjustable switching outputs are separated from measuring amplifier VDC ±0% <70 ma (without limit value contacts) available (no function, no damage) Operating range: C Sensing head: C Storing: C 50 C maximum at Sensing head see page Type 9-0, Typ 9-60: Type 9-50: M male, 8-pole Process connection: M8x M0x,5 Standard: stainless steel.57 Option: PA6 / PVC / POM Body: PBT Gf0 Head of display: Polycarbonate (makrolon) Type 9-50: stainless steel: ca. 0 g / synthetic: ca. 80 g Type 9-00: stainless steel: ca. n/a g / synthetic: ca. n/a g Type 9-0: stainless steel: ca. n/a g / synthetic: ca. n/a g any (avoid deposition on sound exit area) 0 bar maximum Ingress protection: Electronics at least IP 65 Process connection IP 67 PCB: potted by parts Prograable Features Measuring amplifier: Measuring range start (LRV) / Measuring range end (URV) / Adjustment, simulation of output current / Filter function / Linear output signal / HART address / -point calibration Display: range of indication / time of indication / decimal point / units / stabilisation of zero point / locking of prograing / calibration points / TAG number Page-

3 Electrical Connection Assignment plug Mx, 8-pole...0 ma HART Electronical limit value contacts Supply Electrical Connection (Example) SP SP ma A Supply VDC = Page- ~

4 Dimensions (in ) ca. 7,7 7,,,8 ca. 7 ca. 0 M8x M0x,5 Page-

5 Diagrams of Ultrasonic Sensors Type 9-50: Sensor range ma Safe detection of an object 00 x 00 ² Possible detection of a big object Type 9-60: Sensor range ma Safe detection of an object 00 x 00 ² Possible detection of a big object Type 9-0: Sensor range ma Safe detection of an object 00 x 00 ² Possible detection of a big object Page-5

6 Ultrasonic Measuring Principle (Example Level Measuring) ma 00 % M A D A: Distance from sensor membrane to product surface F: Level B: Measuring range (full distance) M: Minimum distance from sensor membrane to maximum level D: Empty distance B F 0 ma 0% Principle of the signal transit time: The sensor of the transmits ultrasonic pulses in the direction of the product surface. There the ultrasonic pulses are reflected back and received by the sensor. The measures the time (t) between pulse transmission and reception. By means of the velocity of sound the distance between the sensor membrane and the product surface is calculated. A = c (velocity of sound) x t/ The empty distance (D) is known, so that the level can be calculated. F=D-A A possible change in the velocity of sound, which is caused by a temperature change, is compensated by an integrated temperature sensor. Minimum distance M: in this range the sensor cannot carry out distance measurements, because the level echos cannot be evaluated due to the transient characteristics of the sensor. Page-6

7 Tips for Mounting Example: Conditions for Level Measurements XX /6D D L 5 α D = Tank diameter L = max. coverage α = Emitting angle of the sensor Do not mount the sensor in the middle of the tank (). Advantageous is a distance between sensor and the tank wall of /6 of the tank diameter (). Avoid measurements through the filling curtain (). Things built in such as temperature sensors should not be within the emitting angle of the ultrasonic sensor (). In particular syetrical equipment such as heating coils or baffles (5) can influence measurement. It is only allowed to use always one sensor in one tank as otherwise two signals may affect each other. Example: Mounting Variants Mounting with counter nut Mounting with sleeve Mounting with connecting piece Mounting with mounting bracket Page-7 Mounting with adaptor flange

8 Order Code O X X X X X X X X Input: Ultrasonic echo 0 Measuring range: (M8x) (M8x) (M0x,5) 0 Material process connection: Stainless steel.57 (Standard) Synthetic material PA6 Synthetic material PVC Synthetic material POM Limit value contacts: x PNP, 0 VDC, 00 ma (Standard) x PNP, 0 VDC, 00 ma Without x NPN, 0 VDC, 00 ma x NPN, 0 VDC, 00 ma x PNP, 0 VDC, 000 ma x PNP, 0 VDC, 000 ma x NPN, 0 VDC, 000 ma x NPN, 0 VDC, 000 ma Electrical connection: M, 8-pole Configuration: Factory setting) Customized (to specify)) Special model: No Yes (to specify) ) Maximum measuring range (LRL...URL) / Customized measuring range (LRV...URV) = maximum measuring range / Filter (damping) 0, s / Limit value : switch point 0%, reset point 0% Limit value : switch point 80%, reset point 60% ) Details according to the technical data. Not given values get the factory configuration. Accessories: DEV-HM: Interface HART, USB, software Order No.: HART Counication The HART-Tool is a graphical menu-driven program. It can be used for putting into operation, configuration, analysis of signals, data backup and documentation of the device. Operating systems: Windows 000, XP, Windows 7, 8. and 0. Connection via HART interface (modem) with USB interface of a PC or hand-held HART counicator Possible settings are: - Adjustment of output current - Simulation of output current - Filter function - Limits of nominal measuring range (URL, LRL) - Linear output signal - HART address - Limits of measuring range (LRV, URV) - -point calibration - 0-point calibration (linearization) Please note: When using counication via a HART modem, a comunication resistance of 50 Ω has to be taken into account. Subject to change, version -85 Page-8