Mini-Seis III™ (Includes the Geophone Package & A/L-Weighted Mic)

Mini-Seis III™ (Includes the Geophone Package & A/L-Weighted Mic)

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The Mini-Seis III™ is our next generation seismograph.  With this instrument we move into a higher level of engineering vibration monitoring.  While still well suited for blast vibration monitoring, the Mini-Seis III™ is readily adaptable to many other monitoring situations.  Especially continuous vibration where histogram and waveform data can be combined. 

The Mini-Seis III supports USB for data transfer to a computer and thumb drive.  It has over 500 MB of memory and can store over 1000 waveform records.  It has an easy-to-read display and is designed for low power.

Features of Note
Sampling rates from 1024 to 4096 over 4 channels, rates of 8192, 16384 and 65536 are in development
Waveform duration from 1 to 120 seconds over all sample rates
Selectable 16 or 12 bit resolution when retrieving data
Memory storage for over one thousand waveform and histogram records
Direct data retrieval via USB and/or USB thumb drive
Serial baud rates up to 230400
External printing option
Remote access with approved cellular modem
Waveform, Histogram, Histogram/Waveform and Manual operating modes
Special sensitivity options
A weighted sound option



General
Channels Three (3) seismic and (1) acoustic channels standard Optional 8 channel upgrade available.
Seismic (tri-axial geophone package)
Range Standard 254 mm/s (10 in/s) .
Resolution 0.008 mm/s (0.0003 in/s).
Frequency Range (ISEE) Varies with sample rate, from 2 to 250 Hz at 1024 samples/s.
Frequency Range (DIN) Varies with sample rate, from 2 to 250 Hz at 1024 samples/s.
Accuracy (ISEE) 1 to 315 Hz (minimum 2048 sample rate needed).
Conforms with the ISEE Performance Specifications for Blasting Seismographs.
Accuracy (DIN) DIN 45669-1 Standard.
Transducer Density Approximately 2.01 g/cc (125 lb./ft3) .
Acoustic
Weighting Linear Weighting or A Weighting.
Linear Range 58 to 148 dBL (512 Pa, 5.12 Mb, 0.074 PSI).
Linear Resolution 0.0156 Pa (0.000156 Mb, 0.00000023 PSI).
Linear Frequency Response Varies with sample rate, from 2 to 250 Hz at 1024 samples/s.
Linear Accuracy Conforms with ISEE Performance Specifications for Blasting Seismographs.
A-Weighting Range 66 to 134 dBA.
A-Weighting Resolution 0.02 dBA.
Timer Allows an instrument to be active only during selected times on a daily basis.
Communication USB Serial – baud rates from 1200 to 230400.
External Data Storage Write to USB drive.
System Log A log is kept in memory to track the active monitoring periods and whenever important
setup changes are made.
Waveform
Modes Waveform, Manual, Auto, Snapshot, Waveform/Histogram.
Waveform Standard mode used for blast monitoring and discrete transient event monitoring.
Manual Trigger from the keypad or an external switch. Multiple units can be chained together and
triggered simultaneously (under development).
Auto When triggered, the instrument will continue to record until the levels are below the trigger
thresholds for some period of time (under development).
Snapshot The instrument will trigger and record at user specified intervals (under development).
Waveform/Histogram A histogram is recorded while the instrument is in Waveform Mode (under development).
Sample Rate 1024, 2048 and 4096 [rates of 8192, 16384 and 65536 (for single channel are
under development.}
Duration 1 to 60 seconds at 1024, 2048 or 4096 sample rate.
Pre-Trigger 1 second at 1024 sample rate. The pre-trigger time decreases proportional to the
sample rate.
Minimum Trigger Levels Seismic - 0.127 mm/sec (0.005 in/s).
Acoustic - 88 dBL, 68 dBA .
Records Stored Varies depending on the sample rate and duration. The unit can store well over
1000 records at a 1024 sample rate and 5 second duration.
Downtime Between Events There is no downtime or data loss between events regardless of the sample rate
or duration.

(Specifications May Be Subject To Change)

Waveform (Continued)
Dynamic Sensor Test A dynamic sensor test is performed at the end of every event. This test will appear in the
pre-trigger of continuous events.
Automatic Sensor Test The unit will automatically generate a sensor test after a user-specified period of inactivity.
Histogram
Modes Histogram and Histogram/Waveform.
Histogram Standard mode for recording discrete measurements from continuous and
semi-continuous sources.
Histogram/Waveform A waveform is recorded when one of the trigger thresholds is received.
Sample Interval 1, 10, 20, 30, 40, 50 or 60 seconds.
Data Stored Channel peaks and their frequencies, also the vector sum.
Records Stored Histogram data will vary depending on the sample interval.
The unit can store approximately 100 eight hour days at a 10 second interval.
The number of waveform records that can be recorded is limited by the available memory.
Dynamic Sensor Test A dynamic sensor test is performed at the beginning and end of every histogram.
Physical
Size Approximately 15 cm. x 11.5 cm. x 9 cm. (6 in. x 4.5 in. x 3.5 in.).
Weight Approximately 1.6 Kg. (3.5 lbs.) without accessories .
Approximately 2.7 Kg. (6 lbs.) with accessories including the storage case .
Battery Internal 6 volt rechargeable.
Display The high contrast graphics display facilitates the instrument's setup.
It also allows the operator to view operating parameters and summary data.
Keypad The alphanumeric keypad can be used to supply comments and setup data.
Clock A 24 hour clock maintains the date and time to the second, even if the primary power fails.
Operating Time With a fully charged battery the unit will operate from 7 to 10 days at 1024 samples
per second. Longer times may be obtained using the timer mode or external power
from a solar panel or deep cycle battery.
Charging An internal charging circuit allows charging with the supplied plug-in wall mount charger
or available 10 to 15 volt DC supply. Power supplies for international use are available.
Operating Temperature 0 to 130 degrees F (-18 to 54 degrees C).
Timer Allows an instrument to be active only during selected times on a daily basis.
Communication USB Serial – baud rates from 1200 to 230400 .
Remote Access Compatible with any network device that supports serial or USB.
External Data Storage Write to USB thumb drive.
System Log A log is kept in memory to track the active monitoring periods and whenever important
Setup changes are made. (this feature is working, but needs more development).
External Alarm Supports attaching a strobe and/or horn when threshold levels are exceeded.
(optional feature - not yet available).
Integrated GPS Saves the latitude and longitude in the event summary and syncs the clock.
(optional feature - not yet available).