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This is the product user guide for the 117400-60 and 117400-120 Colt compact broadband 
seismometer. 

Reftek Systems Inc. 
75 MacDonald Avenue, Unit 1 
Dartmouth, Nova Scotia  
Canada 
Support: 1-902-444-0539 
Email: 

[email protected]

 

www.reftek.com 

 

REF TEK Colt™ Broadband 

Seismometer User Guide 

117400-XX-UG 

Rev D 

10/27/2021 

 

 

Содержание 117400-XX-UG

Страница 1: ...7400 120 Colt compact broadband seismometer Reftek Systems Inc 75 MacDonald Avenue Unit 1 Dartmouth Nova Scotia Canada Support 1 902 444 0539 Email support reftek com www reftek com REF TEK Colt Broadband Seismometer User Guide 117400 XX UG Rev D 10 27 2021 ...

Страница 2: ... calibration signal info B 2018 12 06 Fix typos 26 31 A 2018 11 30 Initial release All 0 1 2018 10 26 Engineering Review All Copyright 2021 Reftek Systems Inc All rights reserved No part of this manual may be reproduced copied or transmitted in any form outside the approved recipient s organization without written permission from Reftek Systems Inc Printed in CANADA ...

Страница 3: ...d ASCII control character i e SP represents a space character CR represents a carriage return character and LF represents a line feed character MSB Most Significant Byte of a multi byte value MSbit Most Significant Bit of a binary number LSB Least Significant Byte of a multi byte value LSbit Least Significant Bit bit 0 of a binary number YYYY Year as a 4 digit number DDD Day of year HH Hour of day...

Страница 4: ...Rev D REF TEK Colt Broadband Seismometer User Guide 10 27 2021 117400 XX UG Reftek Systems Inc iii https reftek com technical support support reftek com https manuals reftek com ...

Страница 5: ... Aux Channels 16 4 2 1 Check the Mass Position Voltages 16 4 2 2 User Initiated Centering Operation 17 4 2 3 Use the Monitor function 17 5 Checking Mass Position Voltage with RTCC 18 5 1 RTCC Status Control Screen 18 5 1 1 To update the DAS status on the current screen 18 5 1 2 Auxiliary Channels 19 5 2 RT_Display Example 20 6 Connector Pinout 21 7 General Description1 23 7 1 UVW XYZ Output Mode 2...

Страница 6: ...Rev D REF TEK Colt Broadband Seismometer User Guide 10 27 2021 117400 XX UG Reftek Systems Inc v 11 Packing and Transportation 32 11 1 Warranty Statement 32 11 2 Warranty Non Warranty Service 32 ...

Страница 7: ...o the base of the unit The REF TEK Colt s analog output signals are Z Y X orthogonal axis outputs The Z output is the vertical output The Y axis output of the REF TEK Colt seismometer is the North South output and the X axis is the East West output During normal operation the REF TEK Colt outputs are ZYX broadband sensor outputs During Mass Centering Mass Unlocking or Mass Locking the REF TEK Colt...

Страница 8: ...k the masses before powering off the unit when moving or transporting the Colt seismometer 1 2 1 Sensor Topology The geometry of REF TEK Colt s output coordinate system is shown below in Figure 1 1 The conversion formula used to convert from the seismometers symmetrical UVW orientation to its standard orthogonal ZYX output is show in Figure 1 2 Figure 1 1 REF TEK Colt sensor topology W V U Z Y X 2...

Страница 9: ...1 Mechanical Zero No need for adjustment in 20 C Power Fail Protection Yes Signal Overload Protection Yes Auto recovery time From Power Fail 10 Minutes From Signal Overload 10 Minutes Power Input 9 to 18 VDC Operating Temperature 25 C to 55 C Power Consumption 0 7 Watts Water Tight Integrity IP 67 Case Aluminum Powder Coated Dimensions Diameter 150 mm x Height 258 cm Weight 5 5 kg Connector PT07A1...

Страница 10: ...th and South direction In addition the handle on top of the unit is aligned North South and can be used to align the seismometer in the correct orientation Bubble Level The Bubble Level is used to level the seismometer as adjustments are made to the leveling feet Adjustable Feet Three Adjustable Feet are provided to level the seismometer Use the Locknut Ring to lock each adjustable foot after the ...

Страница 11: ...for shipping the seismometer 2 2 Checklist for working environment The mounting surface should be clean no loose material close to level and well connected to the bedrock The seismometer should be sheltered from wind and not exposed to direct sunlight The location for the seismometer should be thermally stable A thermal insulated cover outside of the seismometer can be used to attenuate temperatur...

Страница 12: ... during shipment 1 Unpack the REF TEK Colt from its shipping box by removing the packing foam from the top of the instrument See Figure 2 1 Set aside the clear plastic folder it contains the orientation pins that will be used during installation Figure 2 1 REF TEK Colt Top Packing Foam 2 Gently remove the REF TEK Colt seismometer from the shipping box Use the handle at the top of the unit Figure 2...

Страница 13: ... Unpacking continued 4 Set the REF TEK Colt on a flat stable surface If the foam is still on the seismometer gently pull the foam up and off of the seismometer Figure 2 4 REF TEK Colt Foam removal NOTE Keep the seismometer upright as much as possible Never turn the seismometer on its side or upside down while handling it ...

Страница 14: ...nto the surface where is to be installed and make sure that the seismometer is secure The three adjustable leveling feet should not shift relative to the installation surface The surface should be a flat solid surface 3 Connect the cable to the seismometer Connect the seismometer end of the cable first with the DAS end of the cable not connected to anything Figure 3 1 REF TEK Colt cable CAUTION Be...

Страница 15: ...the feet from moving Figure 3 3 Top ring is the locking nut bottom ring is the level foot NOTE Verify the leveling does not change when the locknut rings are tightened 3 2 Powering up the REF TEK Colt 6 Connect the DAS end of the REF TEK Colt seismometer cable Be sure your DAS has been configured for use with the REF TEK Colt seismometer That means that the 4 control lines Pin K L M and U on the s...

Страница 16: ...will take several seconds and the mass centering procedure will take several minutes NOTE The sensor will also wait up to two minutes before beginning the unlock procedure in order to allow its internal super capacitor to fully charge up 8 After the mass centering procedure is completed the seismometer will enter working mode and begin measuring ground motion 9 Upon removal of power the seismomete...

Страница 17: ...ection is established Refer to the iFSC Users Guide if this screen does not display 4 2 Aux Channels The Auxiliary channels can be used to measure mass position Three auxiliary channels are provided on each sensor connector These channels are read once per second 4 2 1 Check the Mass Position Voltages The Aux Channels display is an instantaneous display of the present state of each channel 1 Click...

Страница 18: ...ensor centering if the sensor is attached to channels 4 6 4 2 3 Use the Monitor function The monitor function can be used to check the REF TEK Colt operation with a handheld device 1 Click the Monitor button to check a particular stream and channel 2 Click an active stream 3 Click an active channel 4 Click the View button 5 Wait for the data image to display it will take about 10 seconds 6 To sele...

Страница 19: ...ol button on the DAS Discovery page to open the Status Control page and get details about the selected DAS 130 station 2 When the Status Control button is selected RTCC requests all status information from the 130 unit and uses it to fill in the Status Control screen with the most current information 5 1 1 To update the DAS status on the current screen 3 Request updated status from the DAS by sele...

Страница 20: ...h channel connector These channels are read once per second The Aux Channel part of the display presents the state of each channel If the mass position voltage values are greater than 4 0 volts then select the seismometer attached to a channel group and start the mass centering 1 Select Group 1 3 from the drop down menu 2 Select the CENTER button to start mass centering if the seismometer is conne...

Страница 21: ...osition outputs have a full scale range of 10 0 Volts 5 2 RT_Display Example The real time seismometer waveforms can be displayed by starting RT_Display Please see the RT_Display Users Guide along with the RTPD Installation and Users Guide for more information on viewing real time waveforms in RT_Display Re Center sensor Select Group 1 3 OR Group 4 6 ...

Страница 22: ...tems Inc 21 6 Connector Pinout The REF TEK Colt connector is the PT07A14 19S The recommended mate connector is an Amphenol PT08SE14 19P The REF TEK Colt connector pin locations are shown below Figure 6 1 Colt Connector The pin assignment of the REF TEK Colt output connector is as follows ...

Страница 23: ...ive output leg F E W negative signal output X Differential Output Signal East West Channel Negative output leg G Analog Signal Ground Analog Ground H Power Supply input 12V DC 10V to 18V DC J Power Ground Power Ground K Mass Lock input Active Low Pull to ground for 7 sec to Lock unit L Calibration Enable input Active Low Pull to ground while Cal Signal is active M Mass Re Center input Active Low i...

Страница 24: ...t V Broadband Output Pin P U Mass Pos Output U Short Period Mass Pos U Mass Pos Output Pin R W Mass Pos Output W Short Period Mass Pos W Mass Pos Output Pin S V Mass Pos Output V Short Period Mass Pos V Mass Pos Output 7 2 Mass Position Centering A microprocessor circuit inside the REF TEK Colt provides the function of auto adjusting the mass position An auto adjusting cycle is initiated by poweri...

Страница 25: ... Signal wide pulse signal Used to check the self resonant period of the seismometer Sine Signal Used to check amplitude characteristics The expected seismometer output for a sine wave calibration input signal can be calculated with the following formula Vpp_output Cal_Sensitivity Sensitivity frequency 2 pi A_input Where Cal_Sensitivity Calibration Sensitivity value from the supplied REF TEK Colt D...

Страница 26: ... be taken from the REF TEK Colt Seismometer Data Sheet Ohms is based on serial number The REF TEK 130S recorder can be used to generate a calibration signal for checking the seismometer See details of operation in the relevant digitizer s manual 8 2 Example Step pulse Calibration of the REF TEK Colt The following plots were generated using the following REF TEK 130S calibration parameters Duration...

Страница 27: ...of the specified amplitude hence the positive impulse response and the negative impulse response of the REF TEK Colt Figure 8 2 Zoom Positive Peak With these calibration parameters the REF TEK Colt impulse is approximately 6 Volts in amplitude From the start of the Impulse until the point where the signal crosses below the zero point is approximately 85 seconds ...

Страница 28: ...k to the coil magnet structure producing a force which is balanced with the mass inertial force The feedback network determines the closed loop transfer function of the REF TEK Colt seismometer and it consists of capacitive differentiator and integrator paths The differential output signal having been transformed from the UVW to ZYX coordinate system is proportional to the ground motion velocity T...

Страница 29: ...sfer function is as follows H𝑎 s K A0 𝑠2 𝑠2 0 07404𝑠 0 002742 𝑠2 768 0812𝑠 542817 𝑠 389 7902 𝑠 2 671646𝑒 013 Where K 2000 V m s Seismic voltage sensitivity Differential output A0 5 653370e 021 Transfer function normalization coefficient Zero point and Pole point list a Zero points 2 radians z1 0 0 z2 0 0 b Pole points 6 radians p1 3 701843e 002 3 702961e 002i p2 3 701843e 002 3 702961e 002i p3 3 8...

Страница 30: ...3 𝑠2 0 1418𝑠 0 01097 𝑠2 547 7382𝑠 199942 𝑠 350 4094 𝑠 3 207892𝑒 14 Where K 2000 V m s Seismic voltage sensitivity Differential output A0 1 092889e 017 Transfer function normalization coefficient Zero point and Pole point list a Zero points 4 radians z1 0 0 z2 0 0 z3 3 497007e 002 2 887431e 002i z4 3 497007e 002 2 887431e 002i b Pole points 6 radians p1 7 403687e 002 7 405923e 002i p2 7 403687e 002...

Страница 31: ...he horizontal axis units are Hz while the vertical ones are dB and degrees respectively The transfer Function in the low frequency is consistent with that of traditional velocity output seismometers which have 120 and 60 second natural periods and a 0 707 damping coefficient 10 3 1 Amplitude and Phase Characteristics for the 120s Colt Figure 10 1 Amplitude frequency characteristics of the 120s REF...

Страница 32: ...ide 10 27 2021 117400 XX UG Reftek Systems Inc 31 10 3 2 Amplitude and Phase Characteristics for the 60s Colt Figure 10 3 Amplitude frequency characteristics of the 60s REF TEK Colt Figure 10 4 Phase frequency characteristics of the 60s REF TEK Colt ...

Страница 33: ...Colt will remain upright during transportation 11 1 Warranty Statement REF TEK instruments are warranted free from defects of manufacture for one year from date of shipment For the full text covering the Product Limited Warranty Warranty Remedies How to Obtain Warranty Service Warranty Exclusions and Disclaimer Limitation of Liability Official Language Registration and any Product Extended Limited...

Страница 34: ...Rev D REF TEK Colt Broadband Seismometer User Guide 10 27 2021 117400 XX UG Reftek Systems Inc 33 China RoHS for 120s REF TEK Colt ...

Страница 35: ...Rev D REF TEK Colt Broadband Seismometer User Guide 10 27 2021 117400 XX UG Reftek Systems Inc 34 China RoHS for 60s REF TEK Colt ...

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