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MREL DATA TRAP II Operation Manual

Data/vod recorder
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Operations Manual
Edition 5.4
MREL GROUP OF COMPANIES LIMITED
1555 Sydenham Road
Kingston, Ontario K7L 4V4
Canada
T: +1-613-545-0466
F: +1-613-542-8029
E: blasting@mrel.com
www.mrel.com

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  • Page 1 Operations Manual Edition 5.4 MREL GROUP OF COMPANIES LIMITED 1555 Sydenham Road Kingston, Ontario K7L 4V4 Canada T: +1-613-545-0466 F: +1-613-542-8029 E: blasting@mrel.com www.mrel.com...
  • Page 2 Copyright Information MREL Group of Companies Limited (MREL) warrants that the product is free from Manufacturer’s defects for a period of one (1) year from the date of shipment to the Customer. This Warranty covers all parts and labour. MREL does not warrant that the product will meet the Customer’s requirements, or that it will operate in the combinations which may be selected by the Customer.

  • Page 3: Table Of Contents

    Chapter 5: Recording VOD And Hole/Deck Delay Times Safety Considerations For Selecting An Explosive Testing Site The Resistance Wire Technique For Measuring VOD Installing Proberods For Testing Samples Of Explosives Installing Probecable For Testing Explosives In Blastholes T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...
  • Page 4 Running A Strain Gauge Test Downloading A Strain Gauge Test Chapter 8: Contacting MREL for Technical Support Contacting MREL D a ta Tr a p II™ Op e r a ti ons Ma nu a l - E d itio n 5 .4...

  • Page 5: Chapter 1 Getting Started

    Chapter 1 Getting Started T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...

  • Page 6: Ensuring That All Datatrap Ii™ Hardware Has Been Received

    Over view All of the steps detailed in this Chapter should be completed before the Operator goes into the field to conduct a VOD test: 1. Ensure that all DataTrap II™ components have been received and are available. 2. Install the DAS™ Data Acquisition Suite Software on the Operator’s computer. 3.

  • Page 7: Chapter 2 Introduction

    Chapter 2 Introduction T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...

  • Page 8: Background

    10 MHz. The memory can be upgraded easily and inexpensively to provide 12 or 25 seconds for a total memory of 256 MB or 512 MB (128 or 256 million data points). Contact MREL DataTrap II™ Data/VOD Recorder Memory Upgrade information.

  • Page 9: Dc Signal Recording Applications Of The Datatrap

    Measure the continuous in multiple holes per blast per channel. • • Since the DataTrap II™ Data/VOD Recorder has 8 channels, it can record 8 holes firing simultaneously. T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...
  • Page 10 • Determine whether full detonation, low order detonation or failure occurred, and where in the explosive column it happened. • Check VODs against manufacturers’ specifications in full scale blasting environments. • Determine the minimum booster size for any explosive by measuring run-up velocities in full scale blasting environments. •...

  • Page 11: Chapter 3 Hardware

    Chapter 3 Hardware T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...

  • Page 12: Hardware Components

    Over view This Chapter describes all of the hardware components provided with the DataTrap II™ Data/VOD Recorder. 3.1 Hardware Components The hardware components of the DataTrap II™ Data/VOD Recorder System include the DataTrap II™ Data/VOD Recorder, a Battery Charger, a USB Communications Cable and ten (10) Adapters.
  • Page 13 POWER Button STOP Button INFO Button TRIG’D/Out of Range Indicators STATUS Indicator ENTER Button ESC Button START Button and Indicator UP ARROW Button DOWN ARROW Button NEXT TEST Button LED Display T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...
  • Page 14 STATUS Indicator: Active mode, the light is illuminated, indicating that the DataTrap II™ Data/VOD Recorder is ready for the Operator to press the START button. When the START button is pressed, the DataTrap II™ Data/VOD Recorder begins to monitor the event to be recorded while awaiting a trigger signal.
  • Page 15 TRIG IN Connector: BNC connector for the trigger wire, if external triggering is used. DC OUT Connector: It can be used to supply 10 VDC as an excitation source for other types of gauges. T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...
  • Page 16 SYNC DataTrap II™ Data/VOD Recorder If synchronization is required to be used with multiple units, contact MREL for instructions with the software required. BNC INPUT Connectors: connectors for connecting...

  • Page 17: Battery Charger

    BNC Adapters are provided to facilitate easy connection between the channel input connectors on the DataTrap II™ Data/VOD Recorder to the coaxial cable (preferably RG-58/U) leading to the probes, and the external trigger wire, respectively. T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...

  • Page 18: Daisy Chain Cable

    DataTrap II™ Data/VOD Recorder unit to be “Master” and the others to be “Slave”. (Menu-Services-Synchronisation-Off/Master/Slave) For the proper software to utilize this feature, contact MREL for further instructions. 3.2 LED Display DataTrap II™ Data/VOD Recorder menu allows the operator to view information about the DataTrap II™...
  • Page 19 Break, Make, “Break or Make” (Press Enter to choose current Mode) (Press Enter to choose current amount) Note: A channel that is set to be inactive using the software cannot be made active using the LED menu. T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...

  • Page 20: Datatrap Ii™ Internal Rechargeable Battery

    8 hours (typical use power consumption) before battery recharging is required. The DataTrap II™ Data/VOD Recorder is shipped from MREL fully charged. Since some time may elapse before the DataTrap II™ Data/VOD Recorder is actually put to use, DataTrap II™...

  • Page 21: Recharging The Datatrap Ii™ With The 12V Adapter

    DataTrap II™ Data/VOD Recorder remains idle for long periods, it is recommended to recharge the DataTrap II™ Data/VOD Recorder once per month per the procedure in Section 3.5. This will maintain the conditioning of the internal battery. T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...

  • Page 22: Vod Resistance Probes

    The cable in each box is checked by MREL. The exterior of the box has a unique Quality Tracking Number and its unit resistance applied.

  • Page 23: Datatrap Ii™ Technical Specifications

    Recorder: 28 x 25 x 18 cm (11 x 10 x 7 in.) 4 kg (8.8 lbs). Environmental Fully operational at -40 to +80 °C (-40 to +185 °F). Snow, rain, dust and sand proof. Drop proof from a height of at least 1 m (3.3 ft.). T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...
  • Page 24 Annotating, printing, saving and export of graphs and data to other Windows® software are all easily accomplished. Warranty MREL’s 1 year Comprehensive Parts and Labour Warranty. Technical Support MREL’s Unlimited Technical Support Program by email, fax and telephone.

  • Page 25: Chapter 4: Memor Y And Triggering

    Chapter 4 Memory And Triggering T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...

  • Page 26: Information On Memory And Triggering

    Over view This Chapter provides information on the memor y of the DataTrap II™ Data/VOD Recorder and triggering. 4.1 Information on Memory and Triggering 4.1.1 Memory DataTrap II™ Data/VOD Recorder has a large circular memory containing either: 64 million, 128 million or 256 million data points, depending on the Memory Option installed.
  • Page 27 Software and increase the Pre-Trigger % to increase the amount of Pre-Trigger Time to suit the test. Alternatively, the Operator can reduce the Recording Rate to increase the amount of both Pre and Post-Trigger Time. T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...
  • Page 28 D a ta Tr a p II™ Op e r a ti ons Ma nu a l - E d itio n 5 .4...
  • Page 29 T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...
  • Page 30 D a ta Tr a p II™ Op e r a ti ons Ma nu a l - E d itio n 5 .4...

  • Page 31: Chapter 5: Recording Vod And Hole/Deck Delay Times

    Chapter 5 Recording VOD And Hole/Deck Delay Times T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...

  • Page 32: Safety Considerations For Selecting An Explosive Testing Site

    DataTrap II™ Data/VOD Recorder uses the proven continuous resistance wire technique for monitoring VODs. An MREL-qualified probe of known linear resistance (i.e. ohm/m or ohm/ft) is placed axially in the explosive sample or explosive column. As the detonation front of the explosive consumes the probe, the resistance of the circuit will decrease in proportion to the reduction in length of the probe.

  • Page 33: Installing Proberods For Testing Samples Of Explosives

    DataTrap II™ Data/VOD Recorder System with VOD Upgrade installed VOD PROBEROD (available from MREL) - one (1) per explosive sample. Coaxial cable (type RG-58 is recommended) - sufficient length to run between the DataTrap II™ Data/VOD Recorder location and the explosives.
  • Page 34 BNC Connector (Male) RG-58/U Coaxial Cable 101 m (333 ft.) MREL Product # 1-06-01 Sample of Packaged Explosive VOD PROBEROD or VOD PROBEROD-HS MREL Product # 1-05-10 or 1-05-11 Detonator Blasting Machine Figure 1 Place the RG-58/U Coaxial Place the RG-58/U Coaxial...

  • Page 35: Installing Probecable For Testing Explosives In Blastholes

    VOD Upgrade installed. VOD PROBECABLE “GREEN” or VOD PROBECABLE-LR “BLUE” (available from MREL). Coaxial cable (type RG-58 is recommended) - sufficient length to run between the DataTrap II™ Data/VOD Recorder location and the last blasthole in the blast to be recorded.
  • Page 36 See Figure 2 RG-58/U Coaxial Cable 101 m (333 ft.) MREL Product # 1-06-01 BNC Connector(Male) Blasting Machine Stemming Bulk Explosive DataTrap II™ Data/VOD Recorder Detonator & Booster MREL Product # 1-04-01 VOD PROBECABLE “Green” Blasthole MREL Product # 1-05-05 VOD PROBECABLE-LR “Blue”...

  • Page 37: Preparation Of Probecable For Multiple Blasthole Recording

    Note the Unit Resistance of the probe by reading the value in ohm/m or ohm/ft from the MREL factory label on the spool of PROBECABLE. Note the ohm/m value if the is to be reported in m/s.

  • Page 38: Probecable And Coaxial Cable Protection

    should be “shielding to shielding” and “center to center”. Ensure that the center conductor and the shielding conductor do not touch each other across the connection. 10. Place the DataTrap II™ Data/VOD Recorder in a protective shelter and/or a safe distance away from the blast area as dictated by flyrock.
  • Page 39 Delay between RG-58/U Coaxial each hole Cable 101 m (333 ft.) MREL Product # 1-06-01 BNC Connector(Male) Borehole 1 Borehole 2 Borehole 3 Blasting Machine DataTrap II™ Data/VOD Recorder Stemming MREL Product # 1-04-01 Bulk Explosive VOD PROBECABLE “Green” MREL Product # 1-05- Detonator &...

  • Page 40: Datatrap Ii™ Setup Procedure For Vod Measurements

    C A U T I O N MREL recommends a Trigger Level of about 95% and a Pre-Trigger Time of about 25% for VOD recording of explosives samples and explosives in blastholes. MREL recommends setting the Number of Tests = 1 for VOD recording of blastholes using PROBECABLE. The Operator will normally be able to download the data from the DataTrap II™...
  • Page 41 DataTrap II™ Data/VOD Recorder. Upon finishing the data storing process, the START light will go off, and the STATUS TRIG’D lights will begin to flash slowly. The DataTrap II™ Data/VOD Recorder returns to the Stand-by mode. T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...

  • Page 42: Probe Resistance Out Of Range

    I M P O R T A N T If the DataTrap II™ Data/VOD Recorder has triggered prematurely and the data collected is of no use, for example due to someone driving over the signal lines, then the Operator may reset the DataTrap II™’s internal memory back one test using the following procedure a.

  • Page 43: Utilizing The External Trigger

    HIGH, it triggers when the TTL input becomes high. If it has been set to LEVEL LOW, it triggers when the TTL input becomes low. If using external trigger for tests, MREL recommends using only the Make or Break modes of external trigger. T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...
  • Page 44 To prepare the “test” end of the duplex wire to wait for a MAKE Circuit trigger: remove the insulation from one of the wires and wrap it around the second insulated wire such that the circuit remains open. Upon the duplex wire circuit becoming shorted, the DataTrap II™...

  • Page 45: Chapter 6: Recording Voltage Signals From Gauges

    Chapter 6 Recording Voltage Signals From Gauges T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...

  • Page 46: Introduction To Recording Dc Voltage Signals

    Over view This Chapter provides the Operator with detailed instructions on connecting the gauges to the DataTrap II™ Data/VOD Recorder and setting the DataTrap II™ Data/VOD Recorder hardware to record the voltage signals produced by the gauges. 6.1 Introduction To Recording DC Voltage Signals is capable of recording DC voltage signals on 1 to 8 channels.

  • Page 47: Signal Cable Protection

    A good procedure is to protect the area where there is a cross over for about 1.5 m (5 ft) along the length of cable. Experience has shown that sand or stemming barrier thickness of 15-30 cm (0.5-1 ft) suffices to protect the cables. T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...

  • Page 48: Datatrap Ii™ Setup Procedure For Recording Voltage Signals

    6.4 DataTrap II™ Data/VOD Recorder Setup Procedure For Recording Voltage Signals Once the gauge(s) has been installed and connected to the RG-58 coaxial cable running to the input connectors (labeled 1 2 3 4 5 6 8) on the DataTrap II™ Data/VOD Recorder, the Operator can start setting the DataTrap II™...

  • Page 49: Utilizing The External Trigger

    DataTrap II™ Data/VOD Recorders non-volatile memory. 6.5 Utilizing The External Trigger To use an external trigger with the DataTrap II™ Data/VOD Recorder, please see Section 5.8. T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...
  • Page 50 D a ta Tr a p II™ Op e r a ti ons Ma nu a l - E d itio n 5 .4...

  • Page 51: Chapter 7: Strain Gauge Upgrade

    Chapter 7 Strain Gauge Upgrade T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...

  • Page 52: Introduction

    Over view This Chapter provides information about the DataTrap II™ Data/VOD Recorder Strain Gauge Upgrade, what is included and how to perform Strain Gauge tests. 7.1 Introduction Strain Gauge upgrade for the DataTrap II™ Data/VOD Recorder consists of a special lid for the DataTrap II™...
  • Page 53 Lid. They are available in two (2) different lengths: 20m and 100m. All accessories used for Strain Gauge measurement are contained in a case as shown to the right: • Pre-Amplifier units • BNC Channel Extension Cables • Signal Conditioner Power Cable T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...

  • Page 54: Hardware Components

    7.3 Hardware Components The hardware components needed for conducting a Strain Gauge test include: • DataTrap II™ Data/VOD Recorder Strain Upgrade – P/N: 1-04-06 • DataTrap II™ Data/VOD Recorder Strain Signal & Power Cable (20m or 100m) – P/N: 1-04-08 or 1-04-09 7.3.1 DataTrap II™...

  • Page 55: Details Of Items Required But Not Supplied

    Lid. If the power light does not come on, check that the cable has been connected correctly. Connect the External Trigger cable. The power and data cables for each channel must now be set up as detailed below. T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...

  • Page 56: Running A Strain Gauge Test

    The power and data cables for each channel must now be set up. Do the following for Channel Connect the from the BNC connector on the back of the Channel Extension Cable Channel 1 DataTrap II™ Data/VOD Recorder to the Channel 1 BNC connector on the Signal...

  • Page 57: Chapter 8: Contacting Mrel For Technical Support

    Chapter 8 Contacting MREL for Technical Support T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...

  • Page 58: Contacting Mrel

    Toll Free Canada/USA: Tel: +1-613-545-0466 Fax: +1-613-542-8029 Email: support@mrel.com MREL looks forward to providing you with assistance. D a ta Tr a p II™ Op e r a ti ons Ma nu a l - E d itio n 5 .4...
  • Page 59 T: +1-613-545-0466 F: +1-613-542-8029 www.mrel.com...
  • Page 60 MREL is committed to product innovation; accordingly product may undergo specification improvements without notice. Copyright © 2017 MREL Group of Companies Limited. DataTrap II™ Data/VOD Recorder, DataTrap II™ Data/VOD Recorder Logo, and MREL Logo are trademarks or registered trademarks of MREL Group of Companies Limited.

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