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 604427326 - Natalia
388828835 - Maria |
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Frequently asked questions (FAQ) |
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On this page you will find answers to frequently asked questions
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Q. Is it possible to connect a force sensor to the ZET 210 without additional amplification? A force sensor has five output conductors (bridge circuit). How best to solve this problem (I need to monitor the step-loading of a structure from 0 to 50t on a PC)? Do I have to use an external power source (10V)? Which of the virtual instruments should I use, a load cell or voltmeter? The measurement must be in ton-force. How do I convert the electrical measurement into physical quantities? Can I connect this sensor on a 4-wire circuit (cable length 10m)?
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A. The sensitivity of the sensor is usually 1 or 2 mV/V. This means that when the supply voltage is 1 V and the sensor is at full load, the sensor output differential signal is 1 or 2 mV. At 10 V, the power output is 10 or 20 mV. To measure to within 0.1%, the accuracy of the ADC must be 10-20 µV. The weight of the LSB in the ZET 210 is about 300 Ð ’ВµV. Therefore you can only use the ZET 210 directly only for rough estimates of measurements. For maximum precision, use the ZET 410 amplifier or ZET 220 ADC. The virtual instrument, strain gauge and voltmeter will work correctly from DC. If you use AC from an internal or external oscillator, only a load cell will give you the correct readings. You can connect it according to a 4-wire circuit.
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Q. What is the interchannel delay of the ZET 210 and does it have an antialiasing filter?
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A. The interchannel delay depends on the number of channels being used. The delay is uniformly distributed over the period of digitization. For example, when using 3 channels at a frequency of 100 kHz, the interchannel delay will be 1/100,000/3 = 3.33 microseconds. There is no filter.
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Q. I would like more detailed information on the A19 and A19-U2 spectrum analyzers. What is the upper frequency of the measured signals and the accuracy of amplitude measurements?
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A. The A19-U2 has a conversion frequency of 100 kHz according to the state register, but its real frequency is 200 kHz. Its margin of error in 1st class measurements is 0.5 dB, while that of the voltmeter is 0.5%.
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Q. Does the oscilloscope unit have its own memory? If so, how big is it? Or are the data transferred to the PC via USB 2.0 (Hi Speed)? Is there an FFT (spectrum analyzer) function? Is there a sync start function? What are the limits of the input voltage?
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A. There is no internal memory. Data is transferred in real time via USB. There is an FFT function. Synchronization is by level and front. Limits of the measurable voltages: 10*measuring sensitivity along the vertical.
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Q. My question is about the calculator program. I need to calculate moments from the force measuring platform by 4 components. The components of forces are added up according to a certain formula, with some coefficients. It would be more logical to implement the calculator in one window, which would allow setting a formula, as in Excel, in which the names of the physical channels would appear, and I could record the name of the virtual channel myself and thus set the dimension of the parameter file. As it is, it is rather difficult to create a formula and keep their names straight in my head.
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A. These functions are already implemented in the "Formula Zet" program.
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Q. Does the ZET 017-U2 analyzer connect directly to the input of the differential line?
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A. Yes.
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Q. How can I buy a device from you?
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A. Send us a request by email with the model and the number of the device you need. We'll send you the bill, and you'll receive the product after the payment is received.
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Q. How and where can I obtain products that I've purchased from you?
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A. There are several ways:
1. You can come to our office in person and pick up the product. In addition, at your request, we will hold an introductory course on working with the product.
2. At your request, we will send the product by express post.
3. We can come to you, set everything up and train your personnel.
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Q. Is it possible to download a demo version of your ZETLab and ZETLab Studio software?
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A. No. We do not offer demo versions of our ZETLab and ZETLab Studio development tools software. All of our software products work only with our ADC-DAC boards and spectrum analyzers connected to a personal computer on which ZETLab and/or ZETLab Studio software has been installed. For more information on programs from ZETLab and the capabilities of ZETLab Studio developer tools, visit our website. We have also made it possible to work remotely with our equipment and software. For more information about this, see the Working Remotely page.
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Q. What is the warranty period on your equipment?
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A. The warranty period, during which you can get service along with free technical and software support of our equipment, is 1-3 years from the date of sale.
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Q. Do you also sell sensors?
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A. Yes. We can include various sensors and primary converters in the order -Р’В vibration sensors; strain gauges; microphones; temperature, pressure, humidity, movement sensors, etc.
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Q. Do I have to buy a new computer to work with your devices, or can I use the one I already have?
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A. The main thing is to make sure that your computer meets the following requirements:
1. Processor type: Intel Pentium 4, Pentium D, Core Duo or Celeron D;
2. 512 Mb RAM;
3. Operating system: Microsoft Windows XP ServicePack 1;
4. HighSpeed USB 2.0.
If you do not have a PC, you can buy it yourself, taking into account these requirements, or we can do it for you. In this case, the product you purchase will be tested with this particular computer.
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Q. I could not find a price list on your site. Can you email it to me?
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A. There is a link to the price list near the top of every page of our website.
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Q. I need to make strain measurements. Which of your instruments do you recommend for this?
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A. You can use the 16-channel ZET 210 ADC-DAC Module with a ZET 410 or ZET 411 differential amplifier or a ZET 017-T8 Strain Gauge Station. The final selection from these devices depends on your measurement requirements.
ZET 210 module is a 16-channel device to which strain gauges on half-bridge or bridge circuits can be connected. The strain gauges are powered from a built-in generator. You can connect up to 8 strain gauges on half-bridge circuits to the ZET 210. To increase measurement sensitivity and accuracy, use the ZET 410 or ZET 411 2-channel amplifier. The ZET 210 module is not included in the State Register of Measuring Instruments.
ZET 017-T8 Strain-Gauge Station is an 8-channel device. It is also possible to connect strain gauges in bridge or half-bridge circuits. The load cells are powered from a built-in generator with a constant voltage of 30 V. Up to 8 strain gauges on a full bridge circuit can be connected to the ZET 017-T8. You do not have to use a preamp. The ZET 017-T8 Strain-Gauge Station has been included in the State Register of Measuring Instruments.
For more information about strain measurement, see the "Strain Measurement section".
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Q. Can you write a program to our specs?
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A.Yes.
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