Changes for page ANU Seismic Data Loggers
Last modified by robert on 2025/08/08 16:09
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... ... @@ -14,9 +14,9 @@ 14 14 15 15 Both the LPR-200 (or "Low Power Recorder" 200) and TerraSAWR are designed to use as little power as possible, and more or less use the same amount of power. 16 16 17 -At 100 Hz and with a GPS cable connected these loggers draw about 220 mW of power once the screen is off (higher sample rates draw more power but only marginally, < 5 17 +At 100 Hz and with a GPS cable connected these loggers draw about 220 mW of power once the screen is off (higher sample rates draw more power but only marginally, < 5mW). Adding a sensor (e.g. a Trillium Compact 120) increases this to approximately 400 mW, or 0.4 volt-amps. So, in theory 7 Ah battery should last about 10 days without a solar panel, but in practice it seems to be a bit closer to 8 which may be due to variability in power drain while in getting GPS locks. 18 18 19 -For very sunny environments (latitudes < 30) a 20 olts10 Watt solar panel should have no issue keeping these loggers alive over the summer months, and assuming unobstructed skies should also be fine over winter. However there is no harm in using 20 or even a 40 Watt panel, especially for high latitudes, coastal regions, or areas without a full sky view. In theory up to a 60 Watt solar panel is fine, but we don't recommend anything over 40 Watts and that amount of power is already overkill.19 +For very sunny environments (latitudes < 30) a 20V 10 Watt solar panel should have no issue keeping these loggers alive over the summer months, and assuming unobstructed skies should also be fine over winter. However there is no harm in using 20 or even a 40 Watt panel, especially for high latitudes, coastal regions, or areas without a full sky view. In theory up to a 60 Watt solar panel is fine, but we don't recommend anything over 40 Watts and that amount of power is already overkill. 20 20 21 21 (% class="box infomessage" %) 22 22 ((( ... ... @@ -24,7 +24,7 @@ 24 24 ))) 25 25 26 26 (% class="wikigeneratedid" %) 27 -In the case of an LPR, there is a large compartment for housing an internal battery, able to accommodate anything from a 10-30Ah battery. To use a standard lead acid battery with a positive and negative terminal, a 6 pin adaptor must be used. This ensures the voltage from the external power port (pins A and C) connect to the battery and ensure the system actually recharges. (See [[Peripheral Equipment>>doc:Instrumentation.PeripheralEquipment.WebHome]]for a more comprehensive overview of this kind of setup)27 +In the case of an LPR, there is a large compartment for housing an internal battery, able to accommodate anything from a 10-30Ah battery. To use a standard lead acid battery with a positive and negative terminal, a 6 pin adaptor must be used. This ensures the voltage from the external power port (pins A and C) connect to the battery and ensure the system actually recharges. (See Peripheral Equipment for a more comprehensive overview of this kind of setup) 28 28 29 29 = Data Card Formatting and Information = 30 30 ... ... @@ -89,7 +89,7 @@ 89 89 90 90 * XX.ANUSR network and station name 91 91 * 100 Hz Sample Rate 92 -* 40 92 +* 40V pp (or +/- 20 V) gain / Trillium Compact seismometer version 93 93 * Record on Restart enabled 94 94 95 95 Note that if a user sets the gain incorrectly, this can be fixed later (assuming nothing clipped) by multiplying or dividing by factors of 2. The gain setting can be looked up from the logfile, else you may have to guess from a PSD or other method. ... ... @@ -137,7 +137,7 @@ 137 137 138 138 The seismometer model and serial number (up to 10 characters) can be set. Seismometer model options include: 139 139 140 -* Trillium Compact (same for 20 sand 120s models)140 +* Trillium Compact (same for 20 and 120) 141 141 * CMG - 3ESP 142 142 * Guralp 40T 143 143 * LE-3D Lite ... ... @@ -178,28 +178,19 @@ 178 178 179 179 Instrument response can be downloaded from IRIS [[Nominal Response Library>>https://ds.iris.edu/ds/nrl/]] if need be, or [[directly from us>>http://auspass.edu.au/data/logger_response]] , or by downloading the response of an equivalent sensor at AusPass (e.g. get_stations(level='response') ). 180 180 181 +[[Huddle test comparing a Trillium Compact 120 + TerraSAWR vs a Trillium Compact 120 + Nanometrics Centaur (M8.AUANU)>>image:TC120_ANU_vs_CENTAUR.png||data-xwiki-image-style-alignment="center"]] 181 181 182 - [[Amplitudeand phaseesponse forNUloggerat50Hz>>image:ANU_50hz_response.png]]183 += ANU TerraSAWR (Gen 3, FW 3.5a, 2017- current) = 183 183 184 - [[Amplitudeand phaseponseforANUloggerat100 Hz>>image:ANU_100hz_response.png]]185 +Not sure there's much left to say 185 185 186 186 187 -[[Amplitude and phase response for ANU logger at 250 Hz>>image:ANU_250hz_response.png]] 188 188 189 += ANU LPR-200 (Gen 2, FW 2.6a/2.7a, 2013 - current) = 189 189 190 - [[Amplitudeand phaseresponse for ANU logger at 1000 Hz>>image:ANU_1000hz_response.png]]191 +Ditto the mighty LPR! 191 191 192 192 193 -[[Huddle test comparing a Trillium Compact 120 + TerraSAWR vs a Trillium Compact 120 + Nanometrics Centaur (M8.AUANU)>>image:TC120_ANU_vs_CENTAUR.png||data-xwiki-image-style-alignment="center"]] 194 - 195 -= ANU TerraSAWR (Gen 3, FW 3.5a, 2014- current) = 196 - 197 -Earliest known model is dated July 2014 (though first deployed in 2019) and our current flagship model. Lightweight and small. 198 - 199 -= ANU LPR-200 (Gen 2, FW 2.6a/2.7a, 2011 - current) = 200 - 201 -Earliest known model is dated May 2011 (but first deployed November 2012) and still in use today. Potentially capable of housing much larger batteries than the TSAWR due to the larger cavity space. 202 - 203 203 = ANU "ANUSR" (Gen 1, 2003? - 2012) = 204 204 205 205 This logger has been retired for a long time and has a different instrument response. It used modular component boards and was powered via an acrylic case of 6 x 6V lantern batteries. There is a somewhat complete one above the CAT lab door if anyone is so inclined to have a look. ... ... @@ -229,9 +229,6 @@ 229 229 230 230 231 231 232 - 233 - 234 - 235 235 (% class="box" %) 236 236 ((( 237 237 = TerraSAWR Specs =
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