Type 861 Condenser Discharge Machine
with hand-cranked A.C. generator

Components:

- Magneto generator operated by a removable crank handle.
- Capacitor charged by a group of rectifiers.
- Thyristor acting as switching in device.
- Two-part housing of light metal casting which reconciles sturdiness with low weight.
- Strong leather carrying strap.

The Firing condenser is charged by the alternating current magneto generator.
The tension of the generator is duplicated and redressed by the appropriate electronic circuit. The pilot lamp lights up when the firing tension is reached.
As long as the lamp is glowing (approx. 5 - 7 sec.), the electronic circuit system can be switched in by pressing down the push-button, thus circuiting the accumulated energy to the terminals.

Instruction

The firing circuit is set up as usual (connection of detonators, resistance measurement, insulation test).
1. Connect leading line to terminals.
2. Operate generator with the crank clockwise until the pilot lamp glows.
3. Press down push-button.

After the lamp has turned off, the switch is locked again. To make the blasting machine ready to fire again, follow instruction steps to 3.

Checking the Machine

The effectiveness of the blasting machine may be tested by Tester type SOLUS 861.

N.B. Never actuate the blasting machine with short circuited terminals.
The blasting machine needs no special maintenance.

Electric Blasting Machine CB 20

CB 20 is a capacitor blasting machine designed for initiation of up to 70 type U detonators connected in one series with a firing cable that has a maximum resistance of 5 Ohms. The blasting machine is battery powered and requires a two handed operation to avoid unintended initiation of the round. CB 20 is delivered with rechargeable batteries that are located in the handle. The batteries are charged by connecting the terminals of the blasting machine to a DC source of 12 or 14 V, i.e. the cigarette lighter outlet in a car or to a battery charger. In case of emergency, the rechargeable batteries can be replaced by ordinary batteries. (Do not try to recharge ordinary batteries). The control panel of the blasting machine has three lamps that indicate:

1-If the batteries are sufficiently charged.
2-That the resistance in one series is within the capacity of the blasting machine.
3-That the capacitor is charged and ready for initiation.

When calculating the firing capacity of CB 20, the following data has been used:
Firing current < 1.5 A, firing impulse < 16 mWs/Ohms. The resistance of each detonator is assumed to be 3.5 Ohms and the firing cable resistance to be 5 Ohms. The resistance of Group 1A detonators depends on the leg wire.

Note: The electric detonators in the round must all be of the same type and the lowest period number must be No.1. Instantaneous detonators ( Delay 0 ) must not be used in rounds connected in series as they may break the firing circuit too soon.

General Instructions

Repair

Any repair of the blasting machine must be made by a person who has knowledge and experience of the electrical, mechanical and safety requirements (standards) that applies to the machine.
If the machine has been opened up, it is of utmost importance that the sealing is made correctly when reassembling.


Battery testing

Press the RED button TESTING. The lamp BATT shall light up. If the lamp does not light up, the batteries must be recharged at the earliest opportunity, or if dry cell batteries are used they should be replaced. NOTE: If the lamp BATT does not light up or if it goes out during the charging operation, the machine can be used only if the lamp CHARGE lights up within 30 sec after the green button CHARGING being pressed. The normal charging time to reach firing voltage is approx. 15 sec. If the lamp CHARGE does not light up within 30 sec after the green button CHARGING being pressed, the batteries must be recharged (or replaced) before the machine is used.


Charging the batteries

The batteries are charged by connecting the blasting machine to 12 -14 V DC, e.g. a car battery. Observe the polarity according to the marking on the terminals of the blasting machine. The green lamp BATT lights up to indicate that the batteries are being charged. The charging time for depleted batteries is approx. 14 hours.


Replacement of batteries

Replacement of batteries, battery pack or battery holder is made by unscrewing the battery cover on the handle of the blasting machine. When changing rechargeable Ni-MH, 4.8 V and 12 mAh, battery pack or to holder for dry cell the connecting cables must be detached from the old battery pack and soldered to the new pack or battery holder. If dry cell are used instead of rechargeable NiCd batteries they must be of Alkaline type and placed in the battery holder according to instruction in the holder.
Note! Do not recharge dry cell batteries.

Blasting Machine CI 160

CI 160 is a capacitor blasting machine for a safe and reliable initiation of up to 300 detonators connected in 2 parallel series and a firing cable resistance not exceeding 2.5 Ohms. CI 160 is charged up by the means of a hand cranked generator. The maximum voltage (1950 V) is reached after approx. 20 sec. The charging level is shown on a meter which is divided in 4 zones (I - IV). The required charge level for a given size of the round is indicated on a plate on the blasting machine. Thus the firing current may be adapted to the number of detonators in the round, and the machines maximum firing current is used only when necessary.

When calculating the firing capacity of CI 160 , the following data have been used:
Firing current < 1.5 A, each detonator’s resistance is assumed to be 3.5 Ohms, firing impulse < 16 mWs/Ohms and a firing cable resistance of 5 Ohms. The resistance of detonators depends on the leg wire length.

Note:

-The electric detonators in the round must all be of the same type and the lowest period number must be No.1 Instantaneous detonators (Delay 0) must not be used in rounds connected in series as they may break the firing circuit too early.

-When connecting series in parallel, the series should have the same resistance value .
The difference in resistance must not exceed 5%.

Repair

Any repair to the blasting machine must be made by a person who has knowledge and experience of the electrical, mechanical and safety requirements (standards) that applies to the machine. If the machine has been opened up, it is of utmost importance that the sealing is made correctly when assembling.

DIGOHM Automatic Digital Resistance Meter

The DIGIOHM digital ohmmeter is intended for measuring and checking the resistance in initiation systems that incorporate electric detonators. The instrument is self-starting and has automatic reconnection between different measuring ranges. It has a built-in self-testing function which also checks the condition of the battery.

Advantages

- LCD display with digit size of 13 mm.
- Measuring ranges 0,0—1999 ohm.
- Measuring current: maximum 4 mA.
- Automatic selection of measuring range with or without decimals, appropriate to the given resistance of circuit (auto-ranging).
- Automatic switching on and switching off of the instrument.
- Automatic zero adjustment.
- Water proof & antistatic plastic housing.
- Light weight & handy size.

VIBRALOC - The Intelligent Vibration Monitor

VIBRALOC is full waveform Blast Vibration Monitor with an integrated tri-axel geophones system. Air blast recordings can be made on the forth channel using an optional microphone connected to an external connector. The individual time history series of the seismic (V, L & T) channels and the external air blast (A) are stored in the build in memory that can stores up to 1000 readings.

Advantages

- Compact and versatile - Fits into your pocket!
- Unsurpassed measurement characteristics for peak performance.
- Modular construction to meet future developments. Two standard alkaline D-cells provide power for up to 3 weeks on site.
- Easy to use thanks to on screen menu driven operation.
- A solid aluminum block to withstand your environmental requirements.

Technical Specification

Channels : 3 geophone channels, 1 microphone channel
Standard sensors: 3 built-in geophones
Optional sensor : 1 weatherproof air blast microphone
Frequency range: 2-250 Hz
Weight: 1.75 Kg with batteries
Dimensions LxWxH: 178 x 86 x 67 mm excl. connectors
Display: 4 x 20 characters

Standard PC Software
VIBRALOC REMOTE: Software for remote control & file transfer.
UVSZ: Software for time domain analysis of event files e.g delta-times, amplitudes, ZX frequency etc.

UVS 600 Vibration Monitor

When you need to remotely and reliably record 1-component Peak Particle Velocity, Acceleration, and Displacement over long periods in harsh environments, then the ABEM UVS 600 is your instrument of choice. Its two 1.5V alkaline batteries give you guaranteed minimum two months trouble-free operation. This high battery capacity means you get reliable and accurate readings even when ambient temperature is as low as -20C. As additional safe guard, there is a back-up battery for the memory and the real-time clock.

Studies show that operators of blast vibration measuring equipment have three primary needs:
- Field reliability
- Easy to use
- Large memory storage capacity

Simple to Setup and Easy to Operate:

The UVS 600 measures vibration parameters every two minutes. It stores these values in its 32 days memory. You can select any stored recording for presentation of its LCD screen, either while measurements are being made or when the measuring mode is switched off.

Straightforward Download to a PC:

Thanks to the UVS Remote Demo & Null Modem program, a standard delivery item, you can download the entire memory content to your desktop or field PC. This allows you to make detailed vibration analysis on site and without waste of time. You can also download from remote UVS 600 monitors, via a tele or GSM line, using the full UVS Remote System. And if you want to save memory contents on a standard 3.5 in. floppy disk, then there is an optional UVS 3601 Disk Drive.

Blasting Mats

Saudi Chemical Company offers two types of covering (Blasting Mats) that are used to avoid fly rocks in populated areas, heavy covering and splinter protective covering. The heavy covering is intended to hold the blast together and reduce forward movement. Heavy covering is made of truck tires which are cut into sections and twined together with steel wires forming mats with a size of 3x4 m and a weight of around 1 ton.
The splinter protective covering is lighter and may consist of industrial felt, tarpaulins or mesh nets. The two coverings are often used together with the heavy covering closest to the rock surface.

Shot Firing Cable and Connecting Wires

Saudi Chemical Company supplies high quality Shot Firing Cables and Connecting Wires. There are two types of Shot Firing Cables.
Shot firing cable must be high quality and have a resistance of no more than 10 ohms. Therefore a resistance of 5.0 ohms per 100 m is suitable when using DEM-S electric detonators. Connecting wire must be of high quality and have a resistance of no more than 6 ohms per 100 m.

Other Accessories

Saudi Chemical Company offer wide variety of accessories such as, Tamping Rods, Sirens, Detonator Pliers, and Drill hole Plugs with different sizes from 30 mm up to 120 mm.