1.0 INTRODUCTION
The Advisor X Structural Vibration Detection System is a seismic detection system designed to detect attempts to break into vaults, safes, night deposit safes, automatic cash dispenser units and other reinforced physical areas such as data storage and filing cabinets.
To achieve this high level of accuracy, the system analyzes three major parameters-signal strength, signal frequencies, and signal duration-before triggering an alarm. These parameters differentiate real break-in attempts from nuisance signals. In general, the signal characteristics of a true break-in attempt include:
•Explosives: generate a signal with a very high amplitude and a short duration.
•Mechanical Destruction (hammer and chisel): generates signals with a rather high amplitude and a short intermittent signal duration.
•Rotating Devices: generate signals with a moderate to high amplitude and a long signal duration.
•Thermal Devices: generate signals with low amplitude and a long signal duration.
Sentrol, Inc
DV1200 Series, Advisor X
Structural Vibration Detection System
Installation Instructions
Models DV1201, DV1221
tion range and sensitivity test. The detectors can be mounted with the Mounting Plate (supplied), the DV1212 Steel Surface Mounting Plate recess mounted with the DV1203 Recessed Mounting Plate. Mount the detectors at a height of at least six feet (1.8m) to avoid interference from document cabinets and deposit boxes.
FIGURE 1 - DETECTOR PLACEMENT
2.0PLANNING INSTALLATION
2.1What to Avoid
Although the Advisor X System is designed to provide a high level of immunity against nuisance alarms, some precautions should be considered when planning an installation. Do not install detectors close to electric motors, transformers, fans, air conditioners or other electrical devices that create mechanical vibrations in the protected structure. Avoid mechanical contact between electrical devices and the surface of the protected structure, or dampen the vibrations by using rubber-like insulating materials.
Water Piping
The flow of water through piping in mechanical contact with the protected structure emits a strong signal in the structure itself and may cause nuisance alarms.
Ultrasonic Detectors
Ultrasonic detectors may emit a signal that is within the frequency range of the Advisor X detectors. Avoid placing ultrasonic detectors closer than six feet to the protected surface.
Bells
Bells may generate overtones in the frequency range of the Advisor X detectors. Place a piece of tape on the bell to suppress the overtones, drill a hole in the gong, or relocate the bell to remove the hazard.
2.2 Planning Vault Protection
Generally, it is advisable to place one detector on each wall, floor, and ceiling inside the vault and one detector on or inside the vault door. See the following section on detec-
Special consideration must be given to installations in which a UL certificate (UL 681) is to be awarded. This includes, but is not limited to, power supply requirements, system test needs, and protection of interconnection cable.
Since the vault door is isolated from the walls by its hinges, have one detector inside the vault door. Newer vault doors normally have cable channels inside the hinges to provide easy connection of the sensor.
An optional means of protecting the vault doorway is to mount a detector on the outside of the door. This provides protection against torch-cutting and thermic bar attack at an early stage, since the vault door acts as a membrane and detects the signal even before the surface attack has started. The detector can be mounted directly on the surface or with a DV1202 or DV1203 mounting plate. See mounting instructions, Section 3.0.
The DV1219 Armed Cable Kit and the DV1228 Metal Junction Box allows cabling from the door to the door frame on the hinge side with armored cable. Be careful when drilling into the vault door. Sometimes there is a printed circuit board drill protection behind the outer steel plate. (Consult the vault door manufacturer for details.)
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2.3 The Vault Sensitivity Test for Irregularities
If the surface of the vault or safe shows cracks, gaps or has other irregularities, perform a test to determine if the protection range of each sensor is affected. Additional sensors may be required for optimal coverage. This test is not necessary when sensors are mounted on a steel surface. For concrete, block and brick construction, perform the following test, using an electric drill and a 1/4” (6mm) carbide-tipped bit.
1.Locate any irregularity in the construction. The mortar between bricks and blocks should be considered as irregularities.
2.Install the sensor at one side of the suspected irregularity. See mounting instructions.
3.Wire the sensor to power and to the alarm circuit.
4.Set the sensor sensitivity to MAX.
5.Drill into the wall at a point equal to the protection radius (R) depending on the construct type as described in the table below. Check for an alarm.
6.If an alarm does not occur, assume that the irregularity inhibits the protection range of the detector. Redrill closer to the sensor until an alarm occurs and identify the proper protection radius for that particular site.
7.Take all irregularities into account when spacing sensors. Additional sensors may be required. Note: The separation between the vault door and the frame will require an additional detector on the door to counter a possible weakness at this point.
TABLE 1 - ESTIMATING DETECTOR RANGE ON A VAULT
|
|
|
Protective Radius |
|
|
|
|
Methods of Attack |
|
|
Sensitivity |
Thermic |
Diamond |
|
Material |
Setting |
Lance |
Disk |
Drilling |
|
|
|
|
|
Concrete K-350 |
1 |
13ft.,2in. (4m) |
45ft.,11in. (14m) |
45ft.,11in. (14m) |
Steel |
|
26ft.,3in. (8m) |
45ft.,11in. (14m) |
45ft.,11in. (14m) |
Brick |
G Max |
9ft.,10in. (3m) |
26ft.,3in. (8m) |
26ft.,3in. (8m) |
|
|
|
|
|
Concrete K-350 |
2 |
9ft.,10in. (3m) |
29ft.,7in. (9m) |
29ft.,7in. (9m) |
Steel |
|
13ft.,2in. (4m) |
29ft.,7in. (9m) |
29ft.,7in. (9m) |
Brick |
G Ref |
3ft.,4in. (1m) |
19ft.,8in. (6m) |
19ft.,8in. (6m) |
|
|
|
|
|
Concrete K-350 |
3 |
6ft.,7in. (2m) |
19ft.,8in. (6m) |
19ft.,8in. (6m) |
Steel |
|
6ft.,7in. (2m) |
19ft.,8in. (6m) |
19ft.,8in. (6m) |
|
|
|
|
|
Brick |
G Min |
- |
13ft.,2in. (4m) |
13ft.,2in. (4m) |
|
|
|
|
|
Concrete K-350 |
4 |
3ft.,4in. (1m) |
16ft.,5in. (5m) |
16ft.,5in. (5m) |
Steel |
|
3ft.,4in. (1m) |
16ft.,5in. (5m) |
16ft.,5in. (5m) |
Brick |
|
- |
9ft.,10in. (3m) |
9ft.,10in. (3m) |
|
|
|
|
|
Concrete K-350 |
5 |
- |
13ft.,2in. (4m) |
13ft.,2in. (4m) |
|
|
|
|
|
Steel |
|
- |
13ft.,2in. (4m) |
13ft.,2in. (4m) |
|
|
|
|
|
Brick |
|
- |
6ft.,7in. (2m) |
6ft.,7in. (2m) |
|
|
|
|
|
2.4 Planning Guidelines
Dos
•Do prepare a vault layout plan showing vault dimensions and locations of all equipment to be installed.
•Do check that vault is constructed of monolithic concrete or concrete with steel liner; if constructed of concrete block or brick, masonry must be bonded with Portland cement.
•Do check that sensors are mounted directly to masonry or steel surface and that approved mounting hardware is used.
•Do install at least one sensor on each wall, as well as on the floor and ceiling.
•Do protect vault door with sensor mounted as close as possible to side of door, embedding it in door frame.
•Do perform drill tests, whenever possible, on the outside of the vault.
•Do apply silicone sealant around all openings of sensor cover, screw heads, and cable port) after surface-mounting sensor on floor.
Don’ts
•Don’t assume that covered concrete walls are free of cracks, loose mortar or other irregularities.
•Don’t install sensors permanently before determining sensitivity settings and ambient noise levels.
•Don’t install sensors on cinder block or other unapproved masonry surface.
•Don’t install ultrasonic sensors inside the vault.
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•Don’t install sensors close to bells, buzzers, or telephones unless gong(s) or hammer(s) can be taped to deaden sounds.
•Don’t mount sensors on rough surfaces. Smooth all surfaces.
•Don’t allow test signal transmitter to make contact with mounting plate or sensor on masonry installation.
•Don’t use rigid conduit inside vault except where specified, e.g. run wiring to door contacts and heat detectors in conduit.
•Don’t install sensors behind safe deposit boxes unless sensors are made accessible for service.
2.5 Requirements When Using One Sensor (DV1201 or DV1221)
All-steel safes with 1/4” walls*
Safes must be a minimum of 1/4” steel on the body and 1/2” on the door. For this type of safe construction, the overall size of the safe must not be larger than 12 cubic feet or have:
•The height plus the width not greater than 55 inches, nor
•The height plus the depth not greater than 55 inches, nor
•The width plus the depth not greater than 55 inches.
The sensor can be mounted in or on the safe in close proximity to the door hinges or on the door itself. The sensitivity settings (Refer to Tables 2 and 3) must be adjusted so that adequate detection with the lowest setting is obtained. Use of the Mounting Plate is optional. (Refer to Section 3.0 for additional information).
All-steel safes with 1” walls*
Safes must have a minimum of 1” of steel on the body and the door. The overall size must not exceed 52 cubic feet or
•The height plus the width not greater than 90 inches, nor
•The height plus the depth not greater than 90 inches, nor
•The width plus the depth not greater than 90 inches.
The DV1201 and DV1221 sensors can be mounted on the safe door or on the body in close proximity to the hinges or inside the safe. The sensitivity settings must be adjusted to obtain adequate detection with the lowest possible setting. Use of the Mounting Plate is optional.
* Control panel must be within visual or audible range for testing.
A concrete-clad safe
The same dimensional rule of thumb applies as for an all-steel safe with 1” walls. However, if the previous check of safe construction revealed cracks, seams, or other irregularities in the concrete shell, always assume that two sensors are required for the safe housing regardless of its size.
FIGURE 2 - STRUCTURAL VIBRATION DETECTOR
Removing the cover screws and cover from the base plate (2) provides access to the connection terminals (10) and the sensitivity adjustment control (9).
Inside the unit are located:
•main mounting holes (4) (5)
•test transmitter areas (8) (7)
•strain relief (6)
•tamper switch (11)
3.0INSTALLATION INSTRUCTIONS
3.1General Instructions for DV1201/DV1221
Structural Vibration Detector
The DV1201/DV1221 Structural Vibration Detectors consist of cast aluminum housings, with dimensions of 3.1in. x 3.9in. x 1.2in. (8 x 10 x 3cm), and weigh 9 ounces (250gr) each.
To mount the DV1201 and DV1221 on any surface, the following tools are recommended:
•Mounting plate (also used as drilling template) supplied with each DV1201/DV1221.
•Power drill with hammer facility.
•Felt pen.
•#36 high speed steel drill, diam. (for 6-32 tap).
•#29 high speed steel drill, diam. (for 8-32 tap).
•High speed steel drill, diam. 7/16”.
•Concrete drill, diam. 1/2” (for expansion plug).
•Tap for 6-32 screw.
•Tap for 8-32 screw.
•Cutting oil to cool drill bit and tap when steel mounting is required.
FIGURE 3 -
MOUNTING PLATE
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