Technische Spezifikation (Technical Specification)

Transcription

1 Technical Specification ECHOGRAPH 9/9 Data for: Standard Version and [ m Version] valid for Option N = LF Version / Option SN = Super LF Version according to EN 2668-:2 valid from: 8 June 22 updated: 2 January 25 from S/N: TRV2 provided by Gd DISPLAY Type of display Size of display Resolution Size of A-scan Scaling Scale division Image repetition frequency A-SCREEN REPRESENTATION AND DIGITIZING Image refresh frequency A-scan representation RF representation Rectification Suppression Zoom A/D converter Digitizing method Sampling rate Digitization sampling error Response time Colour LC display, transmissive / transreflective daylight suitable, with background illumination 43.4 x 79.3 mm 4 x 24 pix, 256 out of colours 42 x 73.5 mm Electronically generated, selectable on/off Coarse: -fold horizontal, 5-fold vertical Fine subdivision: 5-fold horizontal, 25-vertical 5 Hz 5 Hz Normal image (envelope or filled) Frozen Zoom across gate Across the entire time-base range Full wave, positive, negative, without rectification (RF) Merely adjustable: - 99% screen height in % steps (linear) Gate range (gate ) to full screen (grid) width 9 bits Direct with A/D converter 8 MHz [4 MHz] < ±.5% screen height at 4 MHz < 2 ms MEASURING RANGES Time-base range mm steel [5-97 mm steel] Sound velocity - 5 m/s in m/s steps Pulse shift - 3 [ - 6] mm in. mm [.2] steps Linearity of time-base ±.5 % of screen width Pulse repetition frequency Hz - 43 Hz (decreasing with increasing measuring length, +5% / 5%, adjustable in % steps, max/min frequency 5 Hz - 8 Hz) Trigger Internal, st echo, external, external st echo TRANSMITTER Number of transmitters 2 (one each for resolution and power) Shape of transmitter pulse Uni-directional (negative) needle pulse Transmitter properties Transmitter type power: Vpo = 34 V ± %, tr < ns, td = 2 ± ns Transmitter pulse voltage V5 Transmitter type resolution: Vpo = 85 V ± %, tr < 3.5 ns, td = 63 ± 6 ns Pulse rise time tr (Definitions see below: additional data according to EN 2668-:2) Pulse length td Frequency spectrum See below: additional data according to EN 2668-:2 Effective output impedance < 25 Ω (power) / < 45 Ω (resolution) Transmitter damping, 5, 22, w/o Ω AMPLIFIER and ATTENUATOR Number of frequency ranges Nominal frequency ranges (db) 3 (LF and RF range, broadband BB) LF:.5 6 MHz, option N:. -.7 MHz, option SN: MHz RF:.5 7 MHz BB: MHz Response LF: fo =.6 MHz ± 5%, f = 5 MHz ±% RF: fo = 5. MHz ± 5%, f = 5.5 MHz ±% BB: fo = 4. MHz ± 5%, f = 3 MHz ±% Temporal resolution ta = <5 ns +/-% at 6 MHz ta2 = <5 ns +/-% at 6 MHz Maximum input sensitivity 5 µvpp +/ µvpp for % screen height Minimum input voltage for % screen height LF range: 2 µvpp RF range: 2 µvpp BB range: 2 µvpp Receiver dynamics LF - 2 db, RF - db, BB - 6 db Equivalent input impedance c.f. appendix Equivalent input noise LF range: 5 nv/ Hz RF range: 4 nv/ Hz BB range: 39 nv/ Hz 9_9_TechDat_25_ho...Gd/Ho gültig ab 2 Jan 25 Seite von 5

2 Linearity of vertical display Nominal value: +/- 2% screen height Dead time after transmitter pulse LF range: µs RF range: µs BB range: µs Adjustable attenuation 99.9 db in db steps Cross-talk damping > 9 db ECHO EVALUATION, DETERMINATION of FLAW SIZE Output of echo height is stated in (valid for both gates) Output of echo transit time is stated in (valid for echoes in gate only) Output of wall thickness % screen height DAC/DGS: dbrel (relative referred to a reference echo line in db) dbabs in dbµv DAC: dbaws (according to AWS D./.M) DGS: mmfbh as size of a flat bottom hole mm sound path (with straight probes) mm depth and projection distance or reduced projection distance (with angle incidence) Resolution:. steel m Version:.2 mm steel Distance between trigger points in gate and 2 (the trigger point can be selected from either edge or peak, with RF representation also zero crossing after first edge can be selected. Maximum wall thickness: 65 mm steel). Resolution. mm steel, reference for averaging with RF representation can be selected either from, 2, 4, 8 or 6 measurements. MONITOR GATES (see section INPUTS and OUTPUTS for additional information) Number of monitor gates 2 Response time Gate and 2: by pulse repetition frequency Operation modes a) Monitoring an amplitude threshold b) Monitoring a wall thickness in zero crossing mode Adjustable range Gate start: - 3 [ - 6] mm in. mm steps Gate width: - [ - 2] mm in. mm steps Statistical clearing (both monitor gates) - 25 events Optical display (both monitor gates) 2 LEDs on the front panel Acoustical flaw alarm Duration is 5 ms approx. (re-fresh with PRF) INPUTS and OUTPUTS Serial interface (service only) Bi-directional RS232C-Interface, baud rates 52-2 Baud USB interface USB interface for PC connection Synchronizing input / output TTL level (5 V), low: active, trigger level: 2 V approx. Data output To PC USB interface: data sets, parameter sets, measured data, A-scans Remote control Via USB interface External monitor Via standard VGA connector (D-sub-HD 5 pin) Switching outputs Level: TTL (5V), low active, ZA = Ohm (both monitor gates) Response accuracy: ±.5 % screen height Switching hysteresis:<.5 screen height Holding time of the switching output: / PRF Proportional output 2.5 Vpo for % signal in gate and 2 Impedance:.5 Ohm Linearity: Error < 4% fg (fgu-fgl) = 2 MHz, fgo = (fgu x fgl) = 23.2 MHz db to 92 db ==> noise level < V Monitor position: no influence on the output signal Influence of pulse shape: Error < 4% (at 8% SH) Holding time: 2 ms MISCELLANEOUS Linear measuring system Date and time Language STORAGE POSSIBILITIES A-scan Data sets POWER SUPPLY Mains operation Rechargeable batteries operation operational time (at full load) Indication of battery capacity Automatic cut-off Selectable mm or inch Built-in real time clock 3, the languages can be transferred from a PC to the instrument (the text may be edited freely in the PC) Current A-scan on screen by FREEZE function 224 data sets incl. A-scans, parameter, time in the internal memory Via mains unit Built-in Li-Ion batteries 7 hrs. approx. if illumination is switched on 3 hrs. approx. without illumination (daylight operation) 4-stage symbol indication; about 5 3 minutes before low voltage condition occurs the alarm note "battery nearly empty is shown on the screen If there is a low voltage condition with mains or battery operation 9_9_TechDat_25_ho...Gd/Ho gültig ab 2 Jan 25 Seite 2 von 5

3 Stability in case of voltage fluctuation PERMISSIBLE AMBIENT CONDITIONS Temperature / storage Dust and humidity < ± % screen height and < ±.5 % screen width (with voltage fluctuations within the permissible range) - to +5 C / to +85 C at max. 95% air humidity Protection class IP 54 (splash-proof) MECHANICS Size (h x w x d) Front panel (h x w) Weight 66 mm x 2 mm x 5 mm w/o rubber holster 99 mm x 27 mm x 64 mm with rubber holster ECHOGRAPH 9: 32 x 278 x 255 mm 47 mm x 78 mm ECHOGRAPH 9: 2 x 265 mm 2. kg (with Li-Ion battery and protective holster).6 kg (with Li-Ion battery and w/o protective holster) ECHOGRAPH 9: 4. kg with batteries Probe connector 2 x Lemo Output connectors Flaw, trigger: D-sub HD connector (5 pin) PC: USB mini B connector VGA: D-sub HD connector (5 pin) ECHOGRAPH 9: IEC power socket with power switch ADDITIONAL DATA according to EN 2668-:2 Transmitter (definitions) Pulse shape and frequency spectrum of the power transmitter ( db frequencies +/- 2%) Pulse shape and frequency spectrum of the resolution transmitter ( db frequencies +/- 2%) Receiver input impedance (real component) Pulse echo mode Rmin = Rmax = 27 Ohm 9_9_TechDat_25_ho...Gd/Ho gültig ab 2 Jan 25 Seite 3 von 5

4 Receiver input impedance (imaginary component) Pulse echo mode Cmin = Cmax = 24 pf Receiver input impedance (real component) T/R mode Rmin = Rmax = 485 Ohm Receiver input impedance (imaginary component) T/R mode Cmin = Cmax = 32 pf Linearity of vertical display Attenuator nominal value echo height permissible echo height +2 % 98 - % Stability (after warm-up time) at temperature changes Echo height < ± 2% Echo position < ±.5% screen width per C temperature change Display instability (jitter of screen indication) Echo height max. % screen height, echo position max. ±.2% of screen width Accuracy of calibrated attenuator a) Deviation of fine adjustment: cumulative error max. ±.5 db within a 2 db interval b) Deviation of coarse adjustment: cumulative error max. ± db within a 6 db interval 9_9_TechDat_25_ho...Gd/Ho gültig ab 2 Jan 25 Seite 4 von 5

5 Frequency Response ECHOGRAPH 9/9 LF , Frequency (MHz) Frequency Response ECHOGRAPH 9/9 RF , Frequency (MHz) Frequency Response ECHOGRAPH 9/9 BB , Frequency (MHz) 9_9_TechDat_25_ho...Gd/Ho gültig ab 2 Jan 25 Seite 5 von 5