Blasting monitoring: MR3000BLA

Blasting monitoring is necessary in numerous scenarios, such as excavation, mining and building demolitions, in order to analyse the blasting’s impact.

When other structures are nearby those blasted, the vibration levels need monitoring, in order to assess possible damages.

The MR3000BLA is a new high-end instrument dedicated to the monitoring of explosion-induced vibrations.

The MR3000BLA is an all-in-one autonomous motion recorder integrated in a rugged housing for field measurements.

The three channels for vibration and the channel for air overpressure make it perfect for a complete blasting monitoring.

Main Benefits

The MR3000BLA offers 4 acquisition channels: 3 dedicated to vibrations and one to air overpressure.
The trigger-based recording automatically acquires the blast event and the LCD screen displays the most useful related information, such as peak amplitudes and dominant frequencies. For proper blast documentation, an automatic reporting with norm comparison is immediately generated and sent to user defined e-mails by the Syscom Cloud Software (SCS).

The IP66 housing integrates a high capacity battery and makes the MR3000BLA easily transportable on mining or quarrying sites for quick setup close to the blasts.
In the standard kit, the MR3000BLA motion recorder is delivered with an external MS2003BLA triaxial velocity sensor and a high pressure microphone. Accessories such as mounting plate and sensor spikes are available for installation in different types of soil.

Main Features

Vibration and air pressure acquisition (4 channels) with band-pass filter from 2 to 250 Hz
High pressure microphone from 2 to 2000 Hz, up to 150 dB(L)
Heavy duty IP66 Peli Box
Wi-fi connectivity
Embedded 3G module
Long-life internal battery
Compatibility with SCS (Syscom Cloud Software) for automatic blast event reporting
External triaxial velocity sensor MS2003BLA with extended measuring range ±250 mm/s (±10 in/s)

Technical specifications

Data recording

Resolution 18 bits
Sampling-rate 1’000, 2’000 sps
Number of channels 4
Recording principle Event recording (time history), continuous time recording, manual trigger
Data memory Removable Industrial Grade SD Card
Minimum trigger level 1 mm/s (0.004 in/s)
Trigger voting logic Predefined AND or OR combinations, individual channel votes
Pre-event recording 1 – 30 seconds (in 1 sec steps)
Post-event recording 1 – 100 seconds (in 1 sec steps)
Alarm principle Multiple level triggers with many notification options (settable for each axis)
File event format XMR/ASCII (if no microphone), ASCII (if microphone is present)

Data recording

Resolution 18 bits
Sampling-rate 1’000, 2’000 sps
Number of channels 4
Recording principle Event recording (time history), continuous time recording, manual trigger
Data memory Removable Industrial Grade SD Card
Minimum trigger level 1 mm/s (0.004 in/s)
Trigger voting logic Predefined AND or OR combinations, individual channel votes
Pre-event recording 1 – 30 seconds (in 1 sec steps)
Post-event recording 1 – 100 seconds (in 1 sec steps)
Alarm principle Multiple level triggers with many notification options (settable for each axis)
File event format XMR/ASCII (if no microphone), ASCII (if microphone is present)

Connectivity

Mobile Network Multi-Band UMTS / HSDPA / WCDMA / GSM / GPRS / EDGE
Wi-fi access IEEE 802.11 b/g compliant
LAN connectivity Available only for MR3000BLA for permanent monitoring

Physical characteristics MR3000BLA portable unit

Housing Peli box IP66, 420 x 331 x 170 mm (16.5 x 13.0 x 6.7 in), 6.4 kg
Temperature/humidity -20° up to 60°C / Up to 100% RH

Physical characteristics MR3000BLA for permanent monitoring

Housing Aluminium IP65, 120 x 180 x 100 mm (4.7 x 7.1 x 3.9 in), 1.5 kg
Temperature/humidity -20° up to 70°C / Up to 100% RH

External MS2003BLA triaxial velocity sensor

Sensor type Triaxial geophone with linearized frequency response
Calibration To be specified at the time of purchase between:
ISEE: calibration according to ISEE Performance Specification for
Blasting Seismographs
DIN: calibration according to DIN 45669-1
Measuring range full scale ISEE: ±250 mm/s (±10 in/s); DIN: ±100 mm/s (±4 in/s)
Frequency range ISEE: 2-250 Hz; DIN: 1-315 Hz
Dynamic range > 104 dB
Linearity/Phase Class 1 (according to DIN 45669)
Cross axis sensitivity <5% (according to DIN 45669)
Dimensions/weight 100 x 100 x 81 mm (3.9 x 3.9 x 3.2 in) / 1.0 kg
Connector Cable gland with 1.5 m cable and LEMO 2K push-pull connector
Accessories Mounting platform for short- or long-term monitoring, soft-soil spike

External high-pressure microphone

Sensor type Air pressure microphone – Array microphone
Measuring range 148 dB (L) ± 3 dB
Frequency range 2-250 Hz
Dimensions/weight 60 mm length, 7 mm diameter / 5.5 g
Connection LEMO coaxial push-pull connector with SMB socket 1.5 m

Power supply MR3000BLA portable unit

Internal battery High capacity long life battery ( > 3000 charge cycles), 5.3 Ah, 12 VDC
AC power Internal AC/DC converter, 100-240 VAC, 50-60 Hz, with power LED indicator
DC power 10-36 VDC, with external AC/DC converter and cable to power grid

Power supply MR3000BLA for permanent monitoring