Features
Specifications
General
Channels Three (3) seismic and (1) acoustic channels standard. Optional 8 channel
upgrade (not yet available.)
Seismic (tri-axial geophone package)
Range Standard 260 mm/s (10.24 in/s) . Other ranges are available.
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) From 1 to 315 Hz at 2048 samples/s.
Accuracy (ISEE) 2 to 250 Hz (minimum 1025 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 (1.25 lb./ft3) .
Acoustic
Weighting Linear Weighting or A Weighting when hardware is present.
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 110 or 120 dBA.
A-Weighting Resolution 0.1 dBA.
Timer Allows an instrument to be active only during selected times on
a daily basis.
Communication USB or Serial – serial baud rates from 1200 to 230400.
External Data Storage Write to USB drive.
External Printing A rechargeable external printer is available as an option.
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.
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 are under
development.)
Duration 1 to 120 seconds.
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.
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.
Dynamic Sensor Test A dynamic sensor test is performed at the end of every event in waveform
mode. 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. (Under Development)
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 met or
exceeded
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 many months of data at a 10 second interval.
The number of waveform records that can be recorded in histogram/
waveform is only 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 15cm x 11.5cm x 9cm (6 in. x 4.5 in. x 3.5 in.)
Weight Approximately 1.6kg (3.5 lbs.) without accessories
Approximately 2.7kg (6 lbs.) with accessories including the storage case
Battery Internal 6 volt rechargeable
Display The high contrast graphics display facilitates the instrumrent'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 or Serial - serial baud rates from 1200 to 230400
Remote Access Compatible with any network devide that supports serial or USB
External Data Storage Write to USB thumb drive
External Printing A rechargeable external printer is available as an option
System Log A log is kept in memory to track the active monitoring periods and
whenever important Setup changes are made
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 (Under Development)