Sts 2 seismometer manual calibration coil resistance Kimberley

sts 2 seismometer manual calibration coil resistance

Parametric Analysis and Calibration of the STS-1 117 (0.0,0.0)!TV POLMARK2.FLF! velocity MARK 0.5s at Polish recorder (nm/s)! source: S.Hock and M.Zuchniak (To=0.5s, d=0.7)!! gain manually adjusted

www.software-for-seismometry.de

Xfer Function of Seismographs HowTo. 26/07/2017 · Last month in my region we had many earthquakes of which the largest with M5.1 and more than 50 with magnitude M3 + Richter and 7 with M4 + Richter. I live …, (Alternatively, the output from three sensors can be combined to yield the same result, by placing them in a homogeneous triaxial arrangement, as in the Streckeisen STS-2.) 1.1 Simple pendulum One of the earliest forms of seismometer was simply a mass suspended by an `inextensible' string. In the absence of acceleration, the string orients.

Parametric Analysis and Calibration of the STS-1 Seismometer of the IR1S/1DA Seismographic Network 1583 Table 2 Characteristic Parameters of Nominal Model with Respect to Physical 2.2 capacitor module - resistor - capacitor time delay 2.2.1 coil 2.2.2 capacitor module adjustment procedures - general 3.1 armature and pole piece assembly 3.2, contact adjustment 3.3 releasing springs calibration 4.1 general 4. 2 drop-away 4.3 pick-up 4. 4 full stroke timing test contact resistance

The seismometer STS_2 ( Wielandt - Streckeisen ) is a force-balance broadband seismometer, and its parameters are taken from the manual of the instrument and from Seismic Sensors and their Calibration von E. Wieland, in New Manual of Observatory Practice. RESP TO selects the type of ground motion, Build your own Seismograph Station. Last Updated: 04/08/2018. A White Paper on A/D system dynamic range needed for seismic recording. Article by Bob Barns on a method you can use to calibrate your sensor. Guidelines for Installing Broadband Seismic Instrumentation. Interesting information from the Berkeley Seismograph Station Web site.

Parametric Analysis and Calibration of the STS-1 Seismometer of the IR1S/1DA Seismographic Network 1583 Table 2 Characteristic Parameters of Nominal Model with Respect to Physical coil temperature is also displayed, if not, the display shows T ---. If the display does not show 20°C even with cooled down atomizer, it is recommeded to re-perform a manual calibration. Coil Resistance and Coil Temperature This Menu item is (see Heater Control menu item below). For the use of temperature controlled vaping, the

In this test, small ground motions were observed using our seismometer with/without the feedback circuit in parallel with STS-2, a typical broadband seismometer used in terrestrial seismology, as shown in Fig. 13. Then, the ground motions were observed by one horizontal component of our seismometer and three orthogonal components of the STS-2. The calibration of the AS-1 (Figure 1) proceeded in two independent parts. The first part was the calibration of the mechanical response of AS-1 seismometer, including the sensitivity of the magnet and sensor coil. The second part was the calibration of the digitizing unit. The total response is the combination of the two parts (Figure 2).

Figure 3.36: Calibration of HOPS STS-1 Z-component seismometer high-frequency response by phase domain analysis of response of seismometer to a stepped sine function calibration stimulus. Shown are the observed (solid line) and calculated (dashed line) responses to a 0.5-40 Hz stepped sine current (equivalent to a stepped acceleration) input to the seismometer calibration coil. Note: Whereas the mechanical part of the STS-2 seismometer has not changed since 1990, the electronics part has been redesigned twice.There exist three different "electronic" generations of STS-2 which differ in the transfer function at frequencies above about 10 Hz. The sensitivity remains contant at 1500 volts/meter/sec from ~ 0.01 - 10 Hz. Please consult PASSCAL's poles and zeros tables for

Figure 3.36: Calibration of HOPS STS-1 Z-component seismometer high-frequency response by phase domain analysis of response of seismometer to a stepped sine function calibration stimulus. Shown are the observed (solid line) and calculated (dashed line) responses to a 0.5-40 Hz stepped sine current (equivalent to a stepped acceleration) input to the seismometer calibration coil. Abstract The sensitivity of a STS-2 broadband seismometer can be determined remotely by two basic methods: 1) via comparison of the inferred ground motions with a reference seismometer, and: 2) via excitation of the calibration coil with a simultaneously recorded stimulus signal.

(Alternatively, the output from three sensors can be combined to yield the same result, by placing them in a homogeneous triaxial arrangement, as in the Streckeisen STS-2.) 1.1 Simple pendulum One of the earliest forms of seismometer was simply a mass suspended by an `inextensible' string. In the absence of acceleration, the string orients 2 meters between Feedback Electronics and sensor Electro-mechanical Specifications Response Long-period corner Short-period corner Accuracy of phase calibration Resolution Clip level Dynamic range Calibration coil Temperature range Flat to ground velocity at a responsivity of 2 x 1200 V sec/m ± 10% (the exact value is specified by the

SM-6 Geophone The SM-6 geophone is a long coil travel version of the time-proven SM-4 geophone. The extra coil travel offers an advantage for higher tilt requirements … This quality, plus 30 years of outstanding performance in the field, qualify the S-13 to be the short-period seismometer standard by which others are compared. For a …

This quality, plus 30 years of outstanding performance in the field, qualify the S-13 to be the short-period seismometer standard by which others are compared. For a … Obtaining Changes in Calibration-Coil to Seismometer Output Constants Using Sine Waves. A parametric analysis of the STS-1 seismometer is developed that …

Parametric Analysis and Calibration of the STS-1 Seismometer of the IR1S/1DA Seismographic Network 1583 Table 2 Characteristic Parameters of Nominal Model with Respect to Physical (R +D) is simply the total resistance, seen from the seismometer's side of the circuit. Scenario II: Determine S and T, given seismometer constants, input impedance, and desired outputs. From Healy and O'Neil (1977) one can obtain an expression for the external resistance D, in terms of the physical constants for the seismometer, , 2 ( ) 1 0 2

SIGNAL COIL CALIBRATION OF ELECTRO-MAGNETIC. Physics of the Earth and Planetary Interiors 84 (1994) 299 304 PHYSICS OFTHE EARTH AND P LAN ETA RY I r\TERIORS Abstract Calibration of the STS-1 seismometer; preliminary results J.-F. Fels Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093 0225, USA (Received 1 January 1993; revision accepted 8 December, 29/03/2012 · How to change the spark plugs on a 2006 Cadillac STS 3.6 L.

Calibration Formulae and Values for Velocity Seismometers

sts 2 seismometer manual calibration coil resistance

Sensor Geophones ION Geophysical. external calibration signals to be injected into the electronics. As discussed below, these can be conditioned to generate velocity or acceleration-equivalent calibration signals, or they can be directly connected into the sensors’ calibration coils. The calibration drive signal can be connected to the CAL_OUT+/- connections to allow external, 2 meters between Feedback Electronics and sensor Electro-mechanical Specifications Response Long-period corner Short-period corner Accuracy of phase calibration Resolution Clip level Dynamic range Calibration coil Temperature range Flat to ground velocity at a responsivity of 2 x 1200 V sec/m ± 10% (the exact value is specified by the.

Streckeisen STS-2 Broadband Sensor PASSCAL Instrument Center

sts 2 seismometer manual calibration coil resistance

Manual Dani 25 page13 dicodes-mods.com. The Streckeisen STS family have set the world standard for broad-band seismometers for over 40 years. The legendary STS-1 and STS-2 surface sensors were followed in 2010 by the STS-2.5, and in 2014, the STS-5A expanded this family with a Borehole sensor system of equal performance and reliability. https://en.wikipedia.org/wiki/Seismographic_instrumentation SEP Seismometer System. ACKNOWLEDGEMENTS The SEP Seismometer System was designed and developed by Paul Denton, Stuart Bullen, Chris Chapman, John Cave and Joseph Birks, as part of SEP’s ‘Innovations in practical work’ project managed by Richard Boohan. The instruction manual was written by Paul Denton, the Seismology.

sts 2 seismometer manual calibration coil resistance

  • Company Profile..STS..... Calibration Laboratory
  • STS1-E300 Manual V1 20 June 4 2008 METROZET
  • Calibration of the AS-1 Seismometer TitlePage

  • The World standard broadband seismometer other seismometers are compared to, with very low noise, high clipping level, low power, and wide operational temperature range without adjustment. FEATURES High-Performance Portable Very Broadband Triaxial Seismometer STS-2.5 The remote calibration test was done successfully on June 17, 2013 and we report here on the procedure and results of the calibration. The calibration of the STS-2HG (s/n 30235) was accomplished using two Random Telegraph (RT) stimuli which were applied to the triaxial U,V,W component calibration coils through an appropriate series resistance

    The calibration coil method requires the manufacturer-supplied calibration coil motor constant, Gcal, , which may be inaccurate. Another significant advantage of the signal coil method is that it requires no knowledge of the signal and damping coil resistances, rc and rd. This fact is especially useful when the coil resistance is unknown and eisen STS-2, co-located with the seismometer , in order to calibrate and obtain the sensiti vity of the instrument. ¥ determining the system response to a kno wn input, through the calibration coil, in

    SM-6 Geophone The SM-6 geophone is a long coil travel version of the time-proven SM-4 geophone. The extra coil travel offers an advantage for higher tilt requirements … eisen STS-2, co-located with the seismometer , in order to calibrate and obtain the sensiti vity of the instrument. ¥ determining the system response to a kno wn input, through the calibration coil, in

    Seismometer : The applet refers to a Geotech Model S-13, configured for vertical operation, equipped with a velocity transducer with four separate coils ( about 380 [Ohm] / 100 [Vs/m] each ) and one calibration coil ( about 23 [Ohm] / 0.2 [N/m] ). Two windings connected in series are used as a signal coil, Obtaining Changes in Calibration-Coil to Seismometer Output Constants Using Sine Waves. A parametric analysis of the STS-1 seismometer is developed that …

    calibration coil. Another pole on the relay grounds the other end of the calibration coil when active. The as-shipped sheet specifies actual calibrator parameters. When determining sensor sensitivity, allowance must be made for the wire loop resistance and the calibration coil resistance. Output Ports seismometer; and 2) the trigger data from the MMLI station where in 2007-2008 there was a parallel installation of the BB STS-2 seismometer and the S13 seismometer. First we shall consider the experimental data. We are using coefficients k, S and poles and zeros specification for the Trillium 40 BB seismometer (Table 1):

    external calibration signals to be injected into the electronics. As discussed below, these can be conditioned to generate velocity or acceleration-equivalent calibration signals, or they can be directly connected into the sensors’ calibration coils. The calibration drive signal can be connected to the CAL_OUT+/- connections to allow external The calibration coil method requires the manufacturer-supplied calibration coil motor constant, Gcal, , which may be inaccurate. Another significant advantage of the signal coil method is that it requires no knowledge of the signal and damping coil resistances, rc and rd. This fact is especially useful when the coil resistance is unknown and

    Parametric Analysis and Calibration of the STS-1 Seismometer of the IR1S/1DA Seismographic Network 1583 Table 2 Characteristic Parameters of Nominal Model with Respect to Physical The method is confirmed by comparing this signal-coil method with weight-lift and calibration-coil calibrations. For a GS-13 V seismometer, these results were within 1.3% of each other. The

    The calibration of the AS-1 (Figure 1) proceeded in two independent parts. The first part was the calibration of the mechanical response of AS-1 seismometer, including the sensitivity of the magnet and sensor coil. The second part was the calibration of the digitizing unit. The total response is the combination of the two parts (Figure 2). MASTER CROSS REFERENCE CHART OF COILS FOR COIN OPERATED GAMES: Last edited November 21, 2019 Please email me with any updates! jrr/@/flippers/./com. Updated resistance/size/coil chart...Thanks to Jim P. for taking the time to fix the layout!

    The calibration of the AS-1 (Figure 1) proceeded in two independent parts. The first part was the calibration of the mechanical response of AS-1 seismometer, including the sensitivity of the magnet and sensor coil. The second part was the calibration of the digitizing unit. The total response is the combination of the two parts (Figure 2). = Calibration voltage input (Peak-to-Peak) / Resistance of the calibration coil NOTE: Calibration coil resistance is nominally 750 Ω NOTE: The sensitivities provided on the Datasheet are on a per channel basis, so the expected seismometer output signal can be calculated for each channel. Trimble Inc.

    calibrator method is the most common, alternative way of determining the response of a seismometer. Previously it was fulfilled using calibration coils. Now signal coils are mostly used (Rodgers et al, 1995) providing almost the same effect. However, the motor constant of the electromagnetic calibrator The seismometer STS_2 ( Wielandt - Streckeisen ) is a force-balance broadband seismometer, and its parameters are taken from the manual of the instrument and from Seismic Sensors and their Calibration von E. Wieland, in New Manual of Observatory Practice. RESP TO selects the type of ground motion,

    2 meters between Feedback Electronics and sensor Electro-mechanical Specifications Response Long-period corner Short-period corner Accuracy of phase calibration Resolution Clip level Dynamic range Calibration coil Temperature range Flat to ground velocity at a responsivity of 2 x 1200 V sec/m ± 10% (the exact value is specified by the signal sent to the sensor calibration coil. The block includes the following Nanometrics software and hardware components: - NaqsView graphical user interface (GUI) and calibration software - Naqs.stn system file with the calibration coil motor constant and the coil resistance parameters - NaqsServer data acquisition software

    Modernized conventional Pendulum Seismometer

    sts 2 seismometer manual calibration coil resistance

    Frequency band enlargement of the penetrator seismometer. eisen STS-2, co-located with the seismometer , in order to calibrate and obtain the sensiti vity of the instrument. ¥ determining the system response to a kno wn input, through the calibration coil, in, Distortion coil to case velocity with 17.78 mm/s (0.7 in/s) p.p. <0.2% <0.2% <0.2% Distortion measurement frequency 12 Hz 12 Hz 14 Hz Maximum tilt angle for distortion spec 15° 20° 20° DAMPING. Open circuit damping 0.315 0.25 0.18 Damping calibration-shunt resistance 2,257 Ω 1,339 Ω 645 Ω Damping with shunt 0.6 0.6 0.6.

    Calibration of the AS-1 Seismometer TitlePage

    Coil Resistance Chart Flippers.com. In this test, small ground motions were observed using our seismometer with/without the feedback circuit in parallel with STS-2, a typical broadband seismometer used in terrestrial seismology, as shown in Fig. 13. Then, the ground motions were observed by one horizontal component of our seismometer and three orthogonal components of the STS-2., The Streckeisen STS family have set the world standard for broad-band seismometers for over 40 years. The legendary STS-1 and STS-2 surface sensors were followed in 2010 by the STS-2.5, and in 2014, the STS-5A expanded this family with a Borehole sensor system of equal performance and reliability..

    SM-6 Geophone The SM-6 geophone is a long coil travel version of the time-proven SM-4 geophone. The extra coil travel offers an advantage for higher tilt requirements … = Calibration voltage input (Peak-to-Peak) / Resistance of the calibration coil NOTE: Calibration coil resistance is nominally 750 Ω NOTE: The sensitivities provided on the Datasheet are on a per channel basis, so the expected seismometer output signal can be calculated for each channel. Trimble Inc.

    2 meters between Feedback Electronics and sensor Electro-mechanical Specifications Response Long-period corner Short-period corner Accuracy of phase calibration Resolution Clip level Dynamic range Calibration coil Temperature range Flat to ground velocity at a responsivity of 2 x 1200 V sec/m ± 10% (the exact value is specified by the The calibration coil method requires the manufacturer-supplied calibration coil motor constant, Gcal, , which may be inaccurate. Another significant advantage of the signal coil method is that it requires no knowledge of the signal and damping coil resistances, rc and rd. This fact is especially useful when the coil resistance is unknown and

    2 meters between Feedback Electronics and sensor Electro-mechanical Specifications Response Long-period corner Short-period corner Accuracy of phase calibration Resolution Clip level Dynamic range Calibration coil Temperature range Flat to ground velocity at a responsivity of 2 x 1200 V sec/m ± 10% (the exact value is specified by the The Streckeisen STS family have set the world standard for broad-band seismometers for over 40 years. The legendary STS-1 and STS-2 surface sensors were followed in 2010 by the STS-2.5, and in 2014, the STS-5A expanded this family with a Borehole sensor system of equal performance and reliability.

    = Calibration voltage input (Peak-to-Peak) / Resistance of the calibration coil NOTE: Calibration coil resistance is nominally 750 Ω NOTE: The sensitivities provided on the Datasheet are on a per channel basis, so the expected seismometer output signal can be calculated for each channel. Trimble Inc. The coil and damping resistances are not required. The method is confirmed by comparing this signal-coil method with weight-lift and calibration-coil calibrations. For a GS-13 V seismometer, these results were within 1.3% of each other. The undamped generator constant computed from the damped generator constant obtained by the signal-coil

    Figure 3.36: Calibration of HOPS STS-1 Z-component seismometer high-frequency response by phase domain analysis of response of seismometer to a stepped sine function calibration stimulus. Shown are the observed (solid line) and calculated (dashed line) responses to a 0.5-40 Hz stepped sine current (equivalent to a stepped acceleration) input to the seismometer calibration coil. Abstract: The sensitivity of a STS-2 broadband seismometer can be determined remotely by two basic methods: 1) via comparison of the inferred ground motions with a reference seismometer, and: 2) via excitation of the calibration coil with a simultaneously recorded stimulus signal.

    Figure 1. Coil Connection_ Diagram for PN-150BL Relay Mounting Base APP OX. 30 v.o.c. SINGLE WINDING COIL OR LOW RESISTANCE WINDING CN OOJBLE WHOING COILS CIRCUIT FOR A.C. CALIBRATICN APPROX. 90 0-tMS CIRCUIT FOR O.C. CALIBRATION HIGH RESISTANCE WINDING ON OCAJBLE WINJING COILS Figure 2. Circuits for Calibration 4551-J, p. 3 (R +D) is simply the total resistance, seen from the seismometer's side of the circuit. Scenario II: Determine S and T, given seismometer constants, input impedance, and desired outputs. From Healy and O'Neil (1977) one can obtain an expression for the external resistance D, in terms of the physical constants for the seismometer, , 2 ( ) 1 0 2

    Figure 3.36: Calibration of HOPS STS-1 Z-component seismometer high-frequency response by phase domain analysis of response of seismometer to a stepped sine function calibration stimulus. Shown are the observed (solid line) and calculated (dashed line) responses to a 0.5-40 Hz stepped sine current (equivalent to a stepped acceleration) input to the seismometer calibration coil. In this test, small ground motions were observed using our seismometer with/without the feedback circuit in parallel with STS-2, a typical broadband seismometer used in terrestrial seismology, as shown in Fig. 13. Then, the ground motions were observed by one horizontal component of our seismometer and three orthogonal components of the STS-2.

    Distortion coil to case velocity with 17.78 mm/s (0.7 in/s) p.p. <0.2% <0.2% <0.2% Distortion measurement frequency 12 Hz 12 Hz 14 Hz Maximum tilt angle for distortion spec 15° 20° 20° DAMPING. Open circuit damping 0.315 0.25 0.18 Damping calibration-shunt resistance 2,257 Ω 1,339 Ω 645 Ω Damping with shunt 0.6 0.6 0.6 PASSCAL STS-2 Seismometers. 16 Nov 1994 RW Busby The installation and operation of PASSCAL STS-2 seismometers is summarized here to emphasize the important points. Full details of the sensor are provided in the manufacturers operations manual. The PASSCAL techniques for recentering the sensor from time to time using the REF TEK DAS scheduled

    The coil and damping resistances are not required. The method is confirmed by comparing this signal-coil method with weight-lift and calibration-coil calibrations. For a GS-13 V seismometer, these results were within 1.3% of each other. The undamped generator constant computed from the damped generator constant obtained by the signal-coil Figure 3.30: Plot of the HOPS STS-1 vertical seismometer observed phase response (solid line) and the corresponding theoretical phase response (dashed line). The best fitting theoretical response was determined via an adaptive migrating grid search to find the and which maximizes the variance reduction. The best fit was obtained for = 14.998 Hz and = 0.371 critical.

    The method is confirmed by comparing this signal-coil method with weight-lift and calibration-coil calibrations. For a GS-13 V seismometer, these results were within 1.3% of each other. The Obtaining Changes in Calibration-Coil to Seismometer Output Constants Using Sine Waves. A parametric analysis of the STS-1 seismometer is developed that …

    2006 Cadillac STS 3.6 Spark Plug Removal - YouTube

    sts 2 seismometer manual calibration coil resistance

    Seismometer Calibrator DesignSale.dk. seismometer; and 2) the trigger data from the MMLI station where in 2007-2008 there was a parallel installation of the BB STS-2 seismometer and the S13 seismometer. First we shall consider the experimental data. We are using coefficients k, S and poles and zeros specification for the Trillium 40 BB seismometer (Table 1):, 117 (0.0,0.0)!TV POLMARK2.FLF! velocity MARK 0.5s at Polish recorder (nm/s)! source: S.Hock and M.Zuchniak (To=0.5s, d=0.7)!! gain manually adjusted.

    Frequency band enlargement of the penetrator seismometer. SEP Seismometer System. ACKNOWLEDGEMENTS The SEP Seismometer System was designed and developed by Paul Denton, Stuart Bullen, Chris Chapman, John Cave and Joseph Birks, as part of SEP’s ‘Innovations in practical work’ project managed by Richard Boohan. The instruction manual was written by Paul Denton, the Seismology, MASTER CROSS REFERENCE CHART OF COILS FOR COIN OPERATED GAMES: Last edited November 21, 2019 Please email me with any updates! jrr/@/flippers/./com. Updated resistance/size/coil chart...Thanks to Jim P. for taking the time to fix the layout!.

    Chapter 3 Examination of a Str ong Motion V elocity Instrument

    sts 2 seismometer manual calibration coil resistance

    Calibration Formulae and Values for Velocity Seismometers. Physics of the Earth and Planetary Interiors 84 (1994) 299 304 PHYSICS OFTHE EARTH AND P LAN ETA RY I r\TERIORS Abstract Calibration of the STS-1 seismometer; preliminary results J.-F. Fels Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093 0225, USA (Received 1 January 1993; revision accepted 8 December https://en.wikipedia.org/wiki/pt10 This page documents my experience building and operating a very sensitive amateur seismometer, called Yuma-2. This instrument was designed by Dave Nelson and Brett Nordgren, and is ….

    sts 2 seismometer manual calibration coil resistance


    Figure 3.30: Plot of the HOPS STS-1 vertical seismometer observed phase response (solid line) and the corresponding theoretical phase response (dashed line). The best fitting theoretical response was determined via an adaptive migrating grid search to find the and which maximizes the variance reduction. The best fit was obtained for = 14.998 Hz and = 0.371 critical. Note: Whereas the mechanical part of the STS-2 seismometer has not changed since 1990, the electronics part has been redesigned twice.There exist three different "electronic" generations of STS-2 which differ in the transfer function at frequencies above about 10 Hz. The sensitivity remains contant at 1500 volts/meter/sec from ~ 0.01 - 10 Hz. Please consult PASSCAL's poles and zeros tables for

    Physics of the Earth and Planetary Interiors 84 (1994) 299 304 PHYSICS OFTHE EARTH AND P LAN ETA RY I r\TERIORS Abstract Calibration of the STS-1 seismometer; preliminary results J.-F. Fels Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093 0225, USA (Received 1 January 1993; revision accepted 8 December The method is confirmed by comparing this signal-coil method with weight-lift and calibration-coil calibrations. For a GS-13 V seismometer, these results were within 1.3% of each other. The

    COIL RESISTANCE, OHMS 500 2000 5500 Transduction, Volts/in/sec 2.12 4.23 7.02 Coil inductance, henries 0.55 2.20 6.05 Analog capacitance, microfarads 147 36.8 13.4 Analog inductance, henries 173 690 1900 Shunt for 0.70 damping, ohm 810 3238 8905 L-4C 1.0 Hz SEISMOMETER L-4A 2.0 Hz SEISMOMETER • Magnetic Flowmeter Transmitter Manual, P/N 00809-0100-4661 (optional) calibration deviation, the coil circuit health, and the electrode circuit health. In addition, the measurements taken by this test can provide additional information when troubleshooting the meter. Coil Circuit Resistance The Coil Circuit Resistance is a measurement of the coil circuit health. This value is compared

    Parametric Analysis and Calibration of the STS-1 Seismometer of the IR1S/1DA Seismographic Network 1583 Table 2 Characteristic Parameters of Nominal Model with Respect to Physical Physics of the Earth and Planetary Interiors 84 (1994) 299 304 PHYSICS OFTHE EARTH AND P LAN ETA RY I r\TERIORS Abstract Calibration of the STS-1 seismometer; preliminary results J.-F. Fels Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093 0225, USA (Received 1 January 1993; revision accepted 8 December

    external calibration signals to be injected into the electronics. As discussed below, these can be conditioned to generate velocity or acceleration-equivalent calibration signals, or they can be directly connected into the sensors’ calibration coils. The calibration drive signal can be connected to the CAL_OUT+/- connections to allow external (R +D) is simply the total resistance, seen from the seismometer's side of the circuit. Scenario II: Determine S and T, given seismometer constants, input impedance, and desired outputs. From Healy and O'Neil (1977) one can obtain an expression for the external resistance D, in terms of the physical constants for the seismometer, , 2 ( ) 1 0 2

    Service and Calibration. We would like to introduce ourselves as one of the leading marketing organization engaged in the field of calibration of Precision Measuring Instruments. Calibration can be provided on-site or on a return-to-Lab basis. When a unit is calibrated it is also serviced. The engineer makes a visual inspection of the tester In this test, small ground motions were observed using our seismometer with/without the feedback circuit in parallel with STS-2, a typical broadband seismometer used in terrestrial seismology, as shown in Fig. 13. Then, the ground motions were observed by one horizontal component of our seismometer and three orthogonal components of the STS-2.

    The method is confirmed by comparing this signal-coil method with weight-lift and calibration-coil calibrations. For a GS-13 V seismometer, these results were within 1.3% of each other. The The calibration coil method requires the manufacturer-supplied calibration coil motor constant, Gcal, , which may be inaccurate. Another significant advantage of the signal coil method is that it requires no knowledge of the signal and damping coil resistances, rc and rd. This fact is especially useful when the coil resistance is unknown and

    PASSCAL STS-2 Seismometers. 16 Nov 1994 RW Busby The installation and operation of PASSCAL STS-2 seismometers is summarized here to emphasize the important points. Full details of the sensor are provided in the manufacturers operations manual. The PASSCAL techniques for recentering the sensor from time to time using the REF TEK DAS scheduled • Magnetic Flowmeter Transmitter Manual, P/N 00809-0100-4661 (optional) calibration deviation, the coil circuit health, and the electrode circuit health. In addition, the measurements taken by this test can provide additional information when troubleshooting the meter. Coil Circuit Resistance The Coil Circuit Resistance is a measurement of the coil circuit health. This value is compared

    Distortion coil to case velocity with 17.78 mm/s (0.7 in/s) p.p. <0.2% <0.2% <0.2% Distortion measurement frequency 12 Hz 12 Hz 14 Hz Maximum tilt angle for distortion spec 15° 20° 20° DAMPING. Open circuit damping 0.315 0.25 0.18 Damping calibration-shunt resistance 2,257 Ω 1,339 Ω 645 Ω Damping with shunt 0.6 0.6 0.6 SM-6 Geophone The SM-6 geophone is a long coil travel version of the time-proven SM-4 geophone. The extra coil travel offers an advantage for higher tilt requirements …

    SM-6 Geophone The SM-6 geophone is a long coil travel version of the time-proven SM-4 geophone. The extra coil travel offers an advantage for higher tilt requirements … The calibration coil method requires the manufacturer-supplied calibration coil motor constant, Gcal, , which may be inaccurate. Another significant advantage of the signal coil method is that it requires no knowledge of the signal and damping coil resistances, rc and rd. This fact is especially useful when the coil resistance is unknown and

    SEP Seismometer System. ACKNOWLEDGEMENTS The SEP Seismometer System was designed and developed by Paul Denton, Stuart Bullen, Chris Chapman, John Cave and Joseph Birks, as part of SEP’s ‘Innovations in practical work’ project managed by Richard Boohan. The instruction manual was written by Paul Denton, the Seismology 29/03/2012 · How to change the spark plugs on a 2006 Cadillac STS 3.6 L