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Chauvin Arnoux C.A 1725 Operation & User’s Manual

  • C.A 1725 Measuring Instruments
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  • Operation & User’s Manual
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Chauvin Arnoux C.A 1725 Manual Online:

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Chauvin Arnoux C.A 1725 User Manual
Chauvin Arnoux C.A 1725 User Guide
Chauvin Arnoux C.A 1725 Online Manual

Text of Chauvin Arnoux C.A 1725 User Guide:

  • Chauvin Arnoux C.A 1725, 4343 Application : When the tachometer is used in a place where it is difficult or impossible to read the display unit, the HOLD function can be used in conjunction with MIN/MAX recording to store the minimum and maximum values reached. 4.4 SMOOTHING OF THE MEASUREMENT Pressing the key starts the smoothing of the measurement (SMOOTH displayed). The digital value indicated is then the sliding average of the last 10 measurements (approximately 5 seconds). The bargraph always indicates the instantaneous measurement. In MIN/MAX recording, if the SMOOTH symbol is

  • Chauvin Arnoux C.A 1725, 4141 Special functions : The following special functions are obtained when a key is kept pressed when the device is switched on: KEY FUNCTION No key pressed Switched on for 5 minutes Switched on for an indefinite duration appears on the display unit Switched on without buzzer The symbol does therefore not appear Initialization of all values contained in the program memory. The display unit indicates „Init“ Measurement down to 0.1Hz SLOW lights on the display unit. 4.2 MIN / MAX RECORDING The recording function can be used to store the minimum and maximum values of the measurements. Pressing the key switches the device into recording mo

  • Chauvin Arnoux C.A 1725, 44 4.6 COUNTING (C.A 1727 ONLY) Press the COUNT key to switch the device into the event counting mode. COUNT appears on the display unit and the measurement units are changed (see table below). Measurements mode COUNT mode tr/min rev (revolution) m/min m (metre) RPM REV (revolution) ft/min ft (foot) Hz / ms / Duty % / The Hz, ms, and % symbols disappear. There is no longer a measurement unit displayed; the device simply counts the number of pulses received. A press on the key stops the counting. A second press causes the counting that was paused to resume. When 99,999 events a

  • Chauvin Arnoux C.A 1725, 3939 Measurement frequency range from 1Hz to 10kHz from 0.1Hz to 10kHz in expanded range Functions available same as optical sensor Accuracy same as optical sensor Input impedance ≥ 75kΩ Balanced signals mode 300mV ± 90mV at 1kHz Thresholds 600mV ± 160mV at 10kHz Hysteresis 250mV ± 80mV TTL signals mode 1.1V ± 150mV to 1kHz Thresholds 2.2V ± 300mV to 10kHz Hysteresis 250mV ± 80mV Maximum voltage ± 20V peak Acceptable overload (1second) 250Vrms Example of DUTY CYCLE Measurement on EXTERNAL INPUT When the external input is used, the FRB connector provided with the device must be connected to th

  • Chauvin Arnoux C.A 1725, 54 - Linear speed function Mechanical adapter with wheel 3.1813cm in diameter giving K = 0.1 for m/min and K = 0.328 for ft/ min. Range* m/min 0.60000 10.000 100.00 1000.0 10000 - - - - - 9.9999 99.999 999.99 9999.9 59999 Range ft/min 1.9680 10.000 100.00 1000.0 10000 - - - - - 9.9999 99.999 999.99 9999.9 59999 Resolution 0.0006m/min 0.006m/min 0.06m/min 0.6m/min 6m/min 0.0006ft/min 0.006ft/min 0.06ft/min 0.6ft/min 6ft/min Accuracy not 1.10 -4 of reading ± 1 resolution step in m/min counting sensor 3.10 -4 of reading ± 1 resolution step in ft/min Measurement time 11s>t>1,1s 1,1s>t>0,5s < 0,5s Stability ± 1 resol

  • Chauvin Arnoux C.A 1725, 4949 The K symbol can be made to disappear only by reprogramming the original value of coefficient K (see the table below). The programming of K is limited to values between 99.999 and 0.010. No other values are accepted. Measurement Counting Original K K in tr/mn K in revolutions 1 K in m/min K in m 0.1 K in RPM K in REV 1 K in ft/min K in ft 0.328 K in kHz, ms, % K in pulse count 1 Programming a coefficient K does not change the maximum measurement and display limits (0.1 to 10,000Hz and 0 to 99,999 points). The table below indicates the frequenc

  • Chauvin Arnoux C.A 1725, 48 To return the decimal point to the display unit, simply press the or key, depending on whether the decimal point exited on the left or right, respectively. Because there are five possible positions of the decimal point, the resolution of the programming may be finer than the resolution of the measurement. When this is the case, the crossing of the alarm thresholds is still determined according to the true measurement resolution. To exit from the programming mode, and to validate: Either press the . You leave the programming mode and PRGM goes off. - Or switch to another programming function by pressing , or key. - Or turn the switch to any

  • 5555 - Duty cycle function Range % *9999.9 999.99 99.999 - - - 1000.0 100.00 10.000 Resolution 0.1% 1% Accuracy 0.1% of full scale from 0.2Hz to 50Hz 1% of full scale 0.2% of full scale from 50Hz to 125Hz Frequency range 0.2 to 125Hz 1 to 125Hz 125 to 500Hz Measurement time 6s>t>0,5s 1,5s>t>0,5s < 0.5s Stability ± 1 point from 0.2Hz to 50Hz ± 1 point ± 2 po

  • Chauvin Arnoux C.A 1725, 52 - Repair For all repairs before or after expiry of warranty, please return the device to your distributor. - Warranty Our warranty is valid, except as otherwise expressly stipulated, for twelve months, counting from the date on which the equipment is made available (extract from our General Terms of Sale, communicated on request). The warranty does not apply following: - inappropriate use of the equipment or use with incompatible equipment; - modifications made to the equipment without the explicit permission of the manufacturer's technical staff; - work

  • Chauvin Arnoux C.A 1725, 3131 CONTENTS 1. INTRODUCTION ...................................................................... 32 2. DESCRIPTION ......................................................................... 32 2.1 TACHOMETER ........................................................................................................................ 32 2.2 DISPLAY UNIT ........................................................................................................................ 35 3. USE .......................................................................................... 37 3.1 CONTACT-FREE MEASUREMENTS ........................................................................................ 3

  • 4545 - with SMOOTH The value recorded is then the smoothed value, when this function is displayed (SMOOTH). For the entire duration of recording of the information, the PRINT and COM symbols are displayed. When the Scanning function is programmed (see "Recording Interval"), pressing the key starts the measurement recording cycle according to the interval pr

  • Chauvin Arnoux C.A 1725, 5757 7. TO ORDER TACHOMETER C.A 1725 .......................................................................P01174810 - Delivered in its carrying case with 1 FRB F connector, 1 9V battery, 1 set of 15 strips of retroreflecting film (length 0.1 m), 1 instruction manual on CD-ROM, and one Guide to getting started (printed). ACCESSORY OF THE C.A 1725 - Mechanical accessories kit ............................................................................................. P01174902 comprising 1 mechanical adapter, 1 calibrated wheel, 1 conical end fitting, 1 cylindrical end fitting. SP

  • Chauvin Arnoux C.A 1725, 3535 2.2 DISPLAY UNIT 1 Programming mode, on the C.A 1727 only. 2 Low threshold crossed, on the C.A 1727 only. 3 Full-scale coefficient K, on the C.A 1727 only. 4 Low threshold function, on the C.A 1727 only. 5 Memory write function, on the C.A 1727 only. 6 High threshold function, on the C.A 1727 only. 7 High threshold crossed, on the C.A 1727 only. 8 Rate of recording of measurements function, on the C.A 1727 only. 9 Transmission or reception in progress, on the C.A 1727 only. 10 Flashing indicator of operation of the infrared sensor. 11 Full-scale value of the bargraph (from 2 to 200 x 1000). 12 Analogue display by bargraph. 13 Arrowhead(s)

  • Chauvin Arnoux C.A 1725, 3737 3. USE 3.1 CONTACT-FREE MEASUREMENTS The contact-free measurement is made by the optical sensor built into the device. This sensor, placed in the front of the device, comprises a frequency-modulated infrared transmitter. Before making any measurement, it is necessary to prepare the revolving target of which the speed is to be determined. Check that the surface sighted is free of spurious reflections that might be counted in addition to the pulses from the reflecting adhesive. Proceed as follows: before applying the adhesive used to make the measurement, turn the target and check that when it is sighted the reading remains at ---. If not, it will be necessary t

  • Chauvin Arnoux C.A 1725, 50 Recording interval (C.A 1727 only) The scanning function is used to make measurements at a preset rhythm and automatically record the results. It is possible to store up to 4000 points. This function is programmed by pressing the key in PRGM mode. The SCAN symbol is displayed. The value programmed is the number of seconds between two successive records. The limits are 10 seconds minimum and 99,999 seconds maximum (approximately 27 hours). In measurement mode, recording is started (stopped) by pressing the key; the display of the PRINT and SCAN symbols confirms that recording is in progress (see "RECORDING

  • 4747 A/ Writing of a number without a decimal point: When the dashes are displayed, pressing a horizontal shift key replaces the dashes by zeros, by the value previously recorded, or by the extreme value possible compatible with the function. The value of the active digit (flashing) is incremented or decremented by pressing the or . key, respectively. Increasing a digit from 9 to 0 au

  • Chauvin Arnoux C.A 1725, 3333 9 key on the C.A 1727 only : - Programming. - Initialize the program memory. 10 key on the C.A 1727 only : - Event counter. key on the C.A 1727 only : - Program the scale factor : coefficient K. 11 key - Manual or automatic change of range. - Extend the measurement range at low frequency. key on the C.A 1727 only : - For programming : decrement the digit. 12 key - Record minima and maxima. - Disable the buzzer. key on the C.A 1727 only : - For programming : shift the selection of the active digit or of the decimal point to the left.

  • Chauvin Arnoux C.A 1725, 5353 6.2 METROLOGICAL CHARACTERISTICS - Reference conditions Quantity of influence Reference conditions Tolerances Ambient temperature 23°C ± 3k Relative humidity 45% to 75% HR Ext. magnetic field < 40A/m to 50 or 60Hz Electric field < 1V/m to 50 or 60Hz Battery voltage 9V ± 0,5V Use in the reference range - Optical sensor: matte target (one that produces no measurement in rotation without reflecting adhesive). - External connector: standardized 0 - 5V TTL signal. - RPM function Range * rpm 6.0000 10.000 100.00 1000.0 10000 - - - - - 9.9999 99.999 999.999 9999.9 99999 Resolution 0.0006tr/min 0.0006tr

  • 40 The duty cycle is given by : t 1 Duty = t 1 + t 2 t 1 or, in %. Duty % = x 100 t 1 + t 2 Here, we have : 3 Duty % = x 100 = 60% 3 + 2 To make this measurement with the C.A 1725 or C.A 1727 tachometer, you must: 1) Check the amplitude of the input signal to the device. This serves to determine what threshold must be set. Here, the amplitude is greater than +1.1 V, so contacts 1 a

  • Chauvin Arnoux C.A 1725, 5151 Example of menu on the screen of the PC : The help menu (?) 5. MAINTENANCE The tachometer requires no special maintenance other than changing the battery and cleaning the housing. - Adjustments The device has no internal adjustments. Measurement accuracy is ensured by a highly stable crystal oscillator. - Cleaning the housing Clean with a cloth moistened with soapy water, then plain water. A dirty sighting window can severely impair the sighting characteristics, making any measurement impossible or unstable. - Cleaning the mecha

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