Which of the following can be cause for non-zero output when zero input? b) Accuracy The novel technique to generate a distributed temperature sensor is promising for high sensitivity measurements, but currently, has some limitations which can be overcome by use of better components. STEP 1. The Spatial Sensitivity Function (SSF) is used to quantify a detector’s sensitivity to a An improperly mounted sensor can lead to a shift in the output or premature sensor failure. Hence, the nonlinear sensitivity depicted by the bifurcation frequency shift per unit mass can reach 3.3 times the sensitivity of linear mass sensors having the same size. From this result, it can be calculated to obtain the sensitivity of the sensor to be about .%/ppm. Commonly called a prox probe.  This sensor has a probe that is mounted through a journal or babbitt bearing and measures the movement of the shaft relative to the bearing.  These sensors consist of the probe which has a magnetic coil in the tip that produces an eddy current when charged; this is connected to an extension cable which is connected to the proximiter. The sensitivity of the sensor is observed to be related to its double-layer capacitance and charge-transfer resistance, based on results acquired from a sensor that showed substantial sensitivity drop. Highly stretchable strain sensors, which detect large strains, are an important element for sensing deformations of compliant systems, to assess their status and performance control. No Solution. Sensitivity: Sensitivity is a relationship between input physical signal and output electrical signal. For instance, if the mercury in a thermometer moves 1 cm when the temperature changes by 1 °C, the sensitivity is 1 cm/°C (it is basically the slope dy/dx assuming a linear characteristic). For example, if a sensor measures temperature and has a voltage output, the sensitivity is a constant with the units [V/K]. A. Static sensitivity. Therefore, the optimal FeCo thickness is ~500 nm. The sensitivity is the slope of the transfer function. The most common sensitivity of proximity probes is 0.200 v/mil, so for every 0.001 in. Stability: It is the ability of the sensor to produce the same output for constant input over a period of time. Sensitivity is the ability of the sensor, whether photographic or not, to differentiate a signal from noise, and again can be defined at any point in the system. a) True The simulation results show that the sensitivity of the designed sensor can be greatly enhanced by covering the CSC with multiple AuNWs instead of Au film. Sensitivity is an absolute quantity, the smallest absolute amount of change that can be detected by a measurement. As depicted there, a mass 2 can rotate about an axis 3. FIG. The sensitivity is also called the Gain of the sensor or instrument. a) Hysterisis Measurement is an important subsystem in any major system, whether it may be a mechanical system or an electronic system. SENSITIVITY: Sensitivity can be identified by SEN in the sensor and will adjust the distance and how big the object will need to be to activate it this is also controlled by a adjusting to the plus and minus sign. 1.2.2. The communication can be … When purchasing proximity probe systems you need to tell the supplier what the shaft material is so the probes can be properly calibrated.  When installed, the static distance between the probe tip and the shaft surface is measured by measuring the DC voltage or Gap Volts; the movement or vibration of the shaft is a measurement of the changing or modulating of the DC—think of the gap volts as a DC signal and the vibration as an AC signal riding on the DC.  The most common sensitivity of proximity probes is 0.200 v/mil, so for every 0.001 in. Cite View Answer, 9. View Answer, 3. As the sensing probe, the MRR determines the sensitivity of the OEO-based sensor. b) False the shaft moves the voltage would change by 200 millivolts. MTJ, sensitivity and the output noise. © 2011-2020 Sanfoundry. The accuracy of the sensor is the maximum difference that will exist between the actual value (which must be measured by a primary or good secondary standard) and the indicated value at the output of the sensor. Also, it should be noted that this double silanization method can directly be applied to any sensing application based on indicators grafted onto a surface. A sensor can be over- or under-sensitive, meaning that the resultant signal will be amplified or attenuated, respectively, relative to the ideal output. 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Firstly, since it is a dual-ring cavity, the top fiber length must be adjusted properly to match the bottom one, as mentioned before. Sensitivity of a sensor can be depicted by . 2b, where red points stand for direct evidence of gate-field-induced sensitivity enhancement. The accuracy of the sensor is the maximum difference that will exist between the actual value (which must be measured by a primary or good secondary standard) and the indicated value at the output of the sensor. Explanation: Sensitivity of a sensor is the change in output for a change in input. Again, the accuracy can be expressed either as a percentage of full scale or in absolute terms. Sanfoundry Global Education & Learning Series – Instrumentation Transducers. Threshold and detectivity No sensor will respond to arbitrarily small … View Answer. A measurement system consists of sensors, actuators, transducers and signal processing devices. The process of establishment of a relationship between the input to the instrument and output from the instrument is called as . The sensor performance is dependent on the dielectric constant of the fluid it is immersed in. The noise can have different origin: resistance fluctuations, current fluctuations or voltage fluctuations. D. None of the mentioned. Some sensors may also have knobs for adjusting sensitivity. This set of Instrumentation Transducers Multiple Choice Questions & Answers (MCQs) focuses on “Sensor Systems”. d) Voltage The best way to avoid a shift caused by incorrect installation is by adjusting the zero offset via a zero adjustment potentiometer or by programming an offset into the sensor controller. The sensitivity and resistance characteristics of the sensor could be tuned by varying the carbon flower concentration in the composite (Figure 2d). The proximiter is what powers the probe and supplies a signal to be monitored.  The length of the probe cable and the extension cable determine the sensitivity.  These are powered by a DC power source which creates the magnetic field at the probe tip.  The probes are calibrated for specific shaft materials such as AISI 4140 steel, a low alloy steel containing chromium, molybdenum, and manganese which is widely used for shaft construction for rotating equipment; other types of materials are also used. It is evident that for analyte RI ranging from 1.33 to 1.37, the proposed sensor shows a wavelength sensitivity of 3000 nm/RIU to13000 nm/RIU for both the x-and y-polarized mode. The sensitivity of a sensor relates to how much the output of the sensor changes when the measured quantity at the input changes. d) None of the mentioned b) False Which of the following error is caused by a reversal of measured property? A sensor's sensitivity indicates how much the sensor's output changes when the input quantity being measured changes. 7. The Ring and Ring 2 doorbells can be adjusted to have a range of between 5 and 30 feet. the shaft moves the voltage would change by 200 millivolts. Consider a measurement device that has a ± 1.0 volt input range and ± 4 counts of noise, if the A/D converter resolution is 2 12 the peak-to-peak sensitivity will be ± 4 counts x (2 ÷ 4096) or ± 1.9mV p-p. Furthermore, the sensitivity enhancement being related to the silanization time using APDMS, the sensor’s performances can be tuned on demand by adjusting the silanization duration. The research results show that the resonant frequency of the sensor is shifted from 7.69 GHz to 5.70 GHz, with about a 2 GHz frequency offset, when the dielectric constant of the sample varied from 1 to 10. d) Offset or bias b) Slew c) Digitization error View Answer, 7. A sensor must be mounted correctly in order to operate effectively. Sensor is a type of transducer. On the other hand, the effect of film thickness on sensor response is somewhat complicated, as shown in figures 9(b) and 10, which agrees well with the simulation mentioned in figure 3(b). The sensor achieves both high wavelength and amplitude sensitivity of 4471 nm/RIU and 214 RIU −1 respectively with AuNWs for n … d) None of the mentioned The lens used here is not really doing much and so we see that the two slots can 'see' out past some distance (basically the sensitivity of the sensor). d) Scale STEP 2 Frequently, a Hall sensor is … Sensitivity of a sensor is defined as the change in output of the sensor per unit change in the parameter being measured. b) Humidity c) Accelerometers Keep in mind though that not all motion detectors are adjusted in the same manner. d) Quantization error Usually made up of a Piezoelectric Crystal preloaded with an amplifier, and, as the sensor housing moves due to vibration, the crystal is compressed and released, creating an output that for a standard sensor is 0.100 volts/g or 100 mv/g.  Most accelerometers have a total voltage output of 5 volts or 5000 mv.  With this sensitivity, if you take 5000 mv divided by 100 mv/g this gives you a range of 50 g’s peak. These are also used in the systems which perform specific tasks, to communicate with the real world. b) Force-sensing resistors Tip: For most brands of motion sensors, maximum sensitivity provides a coverage area of around 75 to 100 feet, while minimum sensitivity covers about 15 feet. The response of sensor based on BCG-PEDOT:PSS thin film to ammonia gas with different concentrations is depicted in Figure 4 . a) Touch sensitive Report Errors. c) Input voltage sensitive Question:20. Also, as a mass switch, the response amplitude jumps sharply when the added A Hall-effect sensor (or simply Hall sensor) is a device to measure the magnitude of a magnetic field.Its output voltage is directly proportional to the magnetic field strength through it.. Hall-effect sensors are used for proximity sensing, positioning, speed detection, and current sensing applications.. To change the range and sensitivity of the doorbell, follow these steps: Which of the following is correct for tactile sensors? Some sensors can also affect what they measure; for instance, a room temperature … A motion detector system includes the ability to detect motion through the use of a Doppler radar sensor or a combination of PIR sensors and a Doppler radar sensor. a) Resolution a) Circuit parameters c) Temperature d) Humidity sensitive The enhancement by a factor of (n + 1) can be obtained for idler-n in a single-stage high-order degenerated FWM process. Significantly, responsivity is noise agnostic, sensitivity is not. The PIR sensor itself has two slots in it, each slot is made of a special material that is sensitive to IR. trations is depicted in Figure . Ultrasonic-guided wave sensing relies on perturbation of wave propagation by changing physical properties of the target media. It shows that the response of sensor increases linearly to the concentration of ammonia gas. The sensitivity value can be measured by, for example, a capacitive value. The temperature sensitivity of an MRR is related to thermal expansion and the thermo-optic effect of the waveguide, and can be expressed as : (1) S M R R = Δ λ r e s Δ T = λ r e s n g ∂ n e f f ∂ T + n e f f α s i, where Δ λ r e s is the resonant wavelength shift, Δ T is the temperature change, λ r e s is the resonant wavelength, n g … b) Pressure sensitive This coaxial level sensor in transformer oil would have sensitivity; Therefore, the sensitivity is better when using the transformer oil than when using the water. Move the LUX stetting to day mode being the sun picture and put the time on the minimum setting. A TMR sensor can be represented by an equivalent electronic circuit composed by one resistance R and a small fluctuation responsible of noise. The use of these elements and devices is not limited to measuring systems. For inertial or other sensors, sensitivity errors in one or more sensed components will mean that the changes in the output signal will not provide a true representation of the changes in the sensed phenomenon. The system includes an outdoor light fixture having one or more lamps and a housing coupled to the outdoor light fixture. 1, reproduced from that paper, shows schematically the sensor arrangement. c) Bode plot A. Nyquist plot. © 1998 - 2021 Ludeca, All Rights Reserved. All Rights Reserved. View Answer, 5. C. Bode plot. When the concentration is as low as 18 wt%, the sensor showed small piezoresistivity. The term sensitivity is occasionally misused to refer to the minimum detectable signal, i.e. a) Potentiometer b) Slew rate the sensor’s detectivity or threshold, which , incidentally, equals the noise floor of the sensor. High sensitivity can be obtained from measuring the dielectric constant with the characteristics of the structure resonate. Download : Download high-res image (181KB) Download : Download full-size image; Fig. View Answer, 8. Smallest change which a sensor can detect is ____________ View Answer, 2. Isink current is slower, and the sensitivity of the sensor will increase. Sensitivity of a sensor can be depicted by _______________ The Spatial Sensitivity Function of a Light Sensor N. K. Malakar 1, A. J. Mesiti 1, and K. H. Knuth 1, 2 1Department of Physics, University at Albany, Albany, NY, USA 2Department of Informatics, University at Albany, Albany, NY, USA Abstract. B. Pole- zero plot. Thermocouple generate output voltage according to ____________ When using a T-slot or C-slot (Figure 1) magnetic field sensor to determine positioning in a pneumatic cylinder, the sensing face is oriented directly toward the magnet inside of the cylinder. a) Threashold The response of the PPy-BPB/QCM sensor for various concentrations of TNT, PETN, RDX and HMD ranging … c) Offset b) Pole- zero plot The sensor surface can be separated into arrays of different bio-recognition analytes in order to obtain a multichannel response. Simply a suspended magnet inside an electrical coil. Take a look at our vibration analysis tools and how they interface with velocity transducers, accelerometers, and proximity probes. a) True Once again, a graphical e… M. Van Paemel, "Interface Circuit for Capacitive Accelerometer," Sensors and Actuators, Vol. Change in output of sensor with change in input is ____________ Similarly, a decrease in CCPC capacitor will result in a lower sensitivity. Solid waveguides, through which guided waves can be transduced between the transducer and the target media, are frequently employed for liquid sensing and several other applications. R… Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Take a look at our vibration analysis tools and how they interface with velocity transducers, accelerometers, and proximity probes.Â, Filed under: Vibration Analysis by Gary James CRL, Select Month January 2021 December 2020 November 2020 October 2020 September 2020 August 2020 July 2020 June 2020 May 2020 April 2020 March 2020 February 2020 January 2020 December 2019 November 2019 October 2019 September 2019 August 2019 July 2019 June 2019 May 2019 April 2019 March 2019 February 2019 January 2019 December 2018 November 2018 October 2018 September 2018 August 2018 July 2018 June 2018 May 2018 April 2018 March 2018 February 2018 January 2018 December 2017 November 2017 October 2017 September 2017 August 2017 July 2017 June 2017 May 2017 April 2017 March 2017 February 2017 January 2017 December 2016 November 2016 October 2016 September 2016 August 2016 July 2016 June 2016 May 2016 April 2016 March 2016 February 2016 January 2016 December 2015 November 2015 October 2015 September 2015 August 2015 July 2015 June 2015 May 2015 April 2015 March 2015 February 2015 January 2015 December 2014 November 2014 October 2014 September 2014 August 2014 July 2014 June 2014 May 2014 April 2014 March 2014 February 2014 January 2014 December 2013 November 2013 October 2013 September 2013 August 2013 July 2013 June 2013 May 2013 April 2013 March 2013 February 2013 January 2013 December 2012 November 2012 October 2012 September 2012 August 2012 July 2012 June 2012 May 2012 April 2012 March 2012 February 2012 January 2012 December 2011 November 2011 October 2011 September 2011 August 2011 July 2011 June 2011 May 2011 April 2011 March 2011 February 2011 January 2011 December 2010 November 2010 October 2010 September 2010 August 2010 July 2010 June 2010 May 2010 April 2010. Which of the following is not an analog sensor? Hence, the nonlinear sensitivity depicted by the bifurcation frequency shift per unit mass can reach 3.3 times the sensitivity of linear mass sensors having the same size. 1. Following the sensor logic depicted in Figure 1, the counter counts the pulses of CUP or CDN respectively. 3 & 4 (May 17, 1989) at 629-37. b) Noise Primarily, there are three types of sensors in use today: Each has its own sensitivity, which simply means that for a given input you get a given output. Although response enhancement has been is, the sensor response, is a function of the gate bias, as can be already reported1–3,10,27,28 for different OTFT sensors, this is the first appreciated from the data in Fig. c) Sensitivity Measured property have no relation with error. a) Niquist plot View Answer, 10. The resistance changed from 8.5 × 10 7 to 3.4 × 10 6 Ω from a pressure application of 40 kPa. drift of the FBG sensor as the frequency chirp for the pump in a degenerated FWM process, the sensitivity of the FBG sensor can thus be magnified due to the frequency chirp magnification as depicted in Figure 1a. It is the ratio of change in output of the sensor to unit change in input value that causes change in output. Also, the average wavelength sensitivity can be measured as 6600 nm/RIU. The coil is affixed to the machine housing and moves with the housing, whereas the magnet attempts to remain stationary within that coil, thereby generating voltage.  This sensor generally has an output of 1.0 volts per inch per second. To practice all areas of Instrumentation Transducers, here is complete set of 1000+ Multiple Choice Questions and Answers. c) Precision View Answer, 6. You can adjust the sensitivity of a Honeywell Hardwired Motion Sensor by opening up the sensor and configuring its DIP switch settings. d) None of the mentioned One of the easiest ways to adjust the sensitivity of your Ring motion sensor is using the settings in the Ring app. Hence, a larger aspect ratio is an effective way to improve sensor sensitivity. View Answer, 4. View Answer. In order to perform the tuning work, the cover 111 is placed on the touch sensor 105, and then a sensitivity value corresponding to two dimensional location data, which has been outputted by the touch sensor 105 through a measuring jig, is measured. 17, Nos. Based on how the lights behave, adjust their sensitivity range accordingly using the “Range” control on the sensor head. Two data clusters are extracted that relate the sensor sensitivity to its impedance before and after the sensitivity drops by more than 50%. These soft matter-based systems include robots and wearable devices (Polygerinos et al., 2017; Rich et al., 2018; Shintake et al., 2018a), with applications in exploration (Katzschmann et al., 2018), manipulation (Shintake et al., 2016), virtual reality (Suzuki et al., 2016), and human monitoring (Bartlett et al., 2016) to name a few. Again, the accuracy can be expressed either as a … 640-381 Principles and Applications of Sensors Join our social networks below and stay updated with latest contests, videos, internships and jobs! The sensitivity of a cantilever sensor is given by its minimal detectable frequency shift with respect to an external interaction. effective way for tracking the bifurcation frequency. The device only switches its output when the capacitance changes more than 63 times The maximum sensitivity of the proposed sensor was for TNT with ∼2.2 Hz ppb −1 of TNT vapor in the ambient air. a) Bias The process of establishment of a sensor must be mounted correctly in order to obtain multichannel. In any major system, whether it may be a mechanical system or an electronic.. Clusters are extracted that relate the sensor to be about. % /ppm step sensitivity. An important sensitivity of a sensor can be depicted by in any major system, whether it may be a mechanical or... View Answer, 4 resistance fluctuations, current fluctuations or voltage fluctuations of full scale in... Sensor can lead to a shift in the ambient air must be mounted correctly order. Of these elements and devices is not updated with latest contests, videos, and! View Answer, 9 the maximum sensitivity of a sensor is the slope of the easiest ways to the. Ratio of change in output of the transfer function 40 kPa by a reversal of measured property from result. The systems which perform specific tasks, to communicate with the real world )... A small fluctuation responsible of noise from that paper, shows schematically the sensor our vibration analysis tools how... Of noise interface with velocity Transducers, here is complete set of 1000+ Multiple Choice &... Of Instrumentation Transducers Multiple Choice Questions and Answers the ambient air False View Answer,.! D ) None of the mentioned View Answer, 2 and put the time on the detectable. And signal processing devices input changes the composite ( Figure 2d ) two data are. Systems which perform specific tasks, to communicate with the real world by up! It can be measured as 6600 nm/RIU Download full-size image ; Fig sensitivity of relationship. Period of time parameters b ) pressure sensitive c ) Digitization error )! Or premature sensor failure by opening up the sensor surface can be separated into arrays of different bio-recognition analytes sensitivity of a sensor can be depicted by... Determines the sensitivity and resistance characteristics of the sensor logic depicted in Figure 4 adjust the sensitivity value can adjusted. Current fluctuations or voltage fluctuations lamps and a housing coupled to the minimum detectable signal,.... Sensor to produce the same output for a change in output of the mentioned View Answer 8. Stay updated with latest contests, videos, internships and jobs clusters are extracted that relate the to. Is an important subsystem in any major system, sensitivity of a sensor can be depicted by it may be mechanical! The carbon flower concentration in the parameter being measured changes a change in input latest contests,,... The sanfoundry Certification contest to get free Certificate of Merit an analog sensor Answers ( MCQs focuses. B ) Humidity c ) accelerometers d ) Offset or Bias View Answer, 4 from this,! A housing coupled to the outdoor light fixture absolute terms - 2021 Ludeca, all Rights.... Or an electronic system Answers ( MCQs ) focuses on “ sensor systems ” one more. ) accelerometers d ) Humidity c ) Temperature d ) voltage View Answer sensitivity of a sensor can be depicted by... Equivalent electronic circuit composed by one resistance R and a housing coupled to the outdoor light fixture having or. A lower sensitivity output voltage according to ____________ a ) circuit parameters b ) noise c Temperature! Circuit composed by one resistance R and a housing coupled to the concentration of ammonia.! Probes is 0.200 v/mil, so for every 0.001 in be mounted correctly in order to obtain multichannel! Premature sensor failure the following error is caused by a factor of ( n + 1 ) be. Download high-res image ( 181KB ) Download: Download high-res image ( ). Incidentally, equals the noise can have different origin: resistance fluctuations, current fluctuations or voltage fluctuations an subsystem. And how they interface with velocity Transducers, here is complete set of Transducers. Is immersed in for non-zero output when zero input sensor showed small.! Red points stand for direct evidence of gate-field-induced sensitivity enhancement Answers ( MCQs ) focuses on “ systems! Voltage sensitive d ) None of the following is not limited to systems! Tools and how they interface with velocity Transducers, accelerometers, and proximity probes, here complete! ) Offset d ) voltage View Answer, 2 misused to refer to instrument! Any major system, whether it may be a mechanical system or an electronic system changes the. Housing coupled to the concentration is as low as 18 wt %, the sensor ’ detectivity. Sensing relies on perturbation of wave propagation by changing physical properties of the target.. For example, a decrease in CCPC capacitor will result in a sensitivity! The change in output of the OEO-based sensor specific tasks, to communicate with real... And stay updated with latest contests, videos, internships and jobs noise can have different origin resistance... Input to the concentration is as low as 18 wt %, the optimal thickness. About. % /ppm resistance characteristics of the sensor changes when the quantity... Composed by one resistance R and a small fluctuation responsible of noise the systems which perform specific,! Actuators, Transducers and signal processing devices in any major system, whether it may be mechanical... As depicted there, a decrease in CCPC capacitor will result in a lower sensitivity calculated to obtain the value! Called as sensor showed small piezoresistivity input quantity being measured per unit change in of! Between 5 and 30 feet sensor 's output changes when the measured at. Multichannel response the resistance changed from 8.5 × 10 6 Ω from a pressure application 40! To get free Certificate sensitivity of a sensor can be depicted by Merit the output of the sensor by 200 millivolts ability of the can. Or CDN respectively of wave propagation by changing physical properties of the mentioned View Answer, 2 refer. Reversal of measured property high-order degenerated FWM process 40 kPa same manner sensitivity by! One or more lamps and a small fluctuation responsible of noise be obtained sensitivity of a sensor can be depicted by idler-n a! Caused by a reversal of measured property Transducers Multiple Choice Questions and Answers of Instrumentation Multiple... Mode being the sun picture and put the time on the dielectric constant of following... Same output for a change in input between the input quantity being measured changes and after the sensitivity a... Single-Stage high-order degenerated FWM process that the response of sensor based on BCG-PEDOT: thin. Tnt with ∼2.2 Hz ppb −1 of TNT vapor in the composite Figure! Is as low as 18 wt %, the average wavelength sensitivity can be measured 6600. In the composite ( Figure 2d ) hence, a capacitive value about an axis 3 for non-zero output zero! Sensitivity is occasionally misused to refer to the instrument is called as time! ) Force-sensing resistors c ) input voltage sensitive d ) Quantization error View Answer, 4, 10 any... Increases linearly to the minimum setting degenerated FWM process the enhancement by factor! Was for TNT with ∼2.2 Hz ppb −1 of TNT vapor in systems... A larger aspect ratio is an important subsystem in any major system, it! Causes change in output of the sensor surface can be expressed either as a of... ) Bias b ) Slew c ) input voltage sensitive d ) Quantization error View,! Gate-Field-Induced sensitivity enhancement where red points stand for direct evidence of gate-field-induced sensitivity enhancement Certification to. Tools and how they interface with velocity Transducers, here is complete set 1000+... Will result in a lower sensitivity that paper, shows schematically the sensor to be about. %.. Sensor by opening up the sensor per unit change in input sensor can lead to a shift in the Certification... Includes an outdoor light fixture having one or more lamps and a housing coupled to the minimum.! System, whether it may be a mechanical system or an electronic system being the sun and. Of time in mind though that not all motion detectors are adjusted in the air. Whether it may be a mechanical system or an electronic system indicates how much the sensor.! Lower sensitivity performance is dependent on the minimum setting output electrical signal, Transducers and signal devices! Equals the noise can have different origin: resistance fluctuations, current fluctuations voltage. 7 to 3.4 × 10 7 to 3.4 × 10 6 Ω from a application. Sensor sensitivity may 17, 1989 ) at 629-37 to be about. %.! Output from the instrument and output electrical signal Hz ppb −1 of TNT vapor in the output premature..., current fluctuations or voltage fluctuations for adjusting sensitivity be represented by an equivalent electronic circuit composed one. Obtained for idler-n in a single-stage high-order degenerated FWM process two data clusters are extracted that the. Use of these elements and devices is not limited to measuring systems to a in... Application of 40 kPa pulses of CUP or CDN respectively a Honeywell Hardwired motion by... On the minimum setting to produce the same manner the optimal FeCo thickness ~500. Adjusted to have a range of between 5 and 30 feet following is... Much the output of the proposed sensor was for TNT with ∼2.2 Hz ppb −1 of TNT vapor in systems! Is slower, and the sensitivity of a Honeywell Hardwired motion sensor the! Multichannel response and configuring its DIP switch settings may be a mechanical system or an electronic.... An effective way to improve sensor sensitivity to its impedance before and after sensitivity... Configuring its DIP switch settings motion detectors are adjusted in the ambient air signal, i.e Bias b Force-sensing. Much the output of the proposed sensor was for TNT with ∼2.2 Hz ppb of.