Instructions for the glass breakage and vibration detector
This combined glass break and vibration detector is a precise sensor for detecting vibrations, oscillations, and glass breakage. This combination sensor belongs to the Didactum group of dry contact sensors and is comparable to a switching contact (normally open/normally closed). In its normal state, this sensor is closed.
This sensor detects forced entry using hammers, saws, crowbars, etc. Protect walls, ceilings, windows, safes, or cabinets. As soon as vibrations or force are detected on the monitored surface, you and your colleagues will be fully alerted by the Didactum monitoring system. Each monitoring system can send notifications and alarm messages in the form of SNMP traps, emails, or SMS (via GSM modem or third-party gateway). By installing a siren with a built-in strobe light, the alarm can also be triggered overhead. The monitoring system's integrated logic supports the rapid implementation of alarm plans.
The integrated tamper switch of the glass breakage and vibration sensor operates independently of the vibration detector circuit. The vibration detector can be adjusted by simply turning the adjustment screw to suit the specific surface being monitored. This combined sensor can monitor materials such as glass, wood, steel, sheet metal, drywall, concrete, or brick. The built-in contacts made of pure silver ensure years of reliable operation. The dustproof housing is small and discreet and can be easily installed using the included double-sided industrial mounting tape.
This sensor is compatible with all networked monitoring systems from Didactum.
Installation of the glass breakage and vibration detector
Please remove the sensor cover and connect two wires (not included) to the respective terminals. These are the connections for the potential-free input contacts of your Didactum networked monitoring system.
Connection of the two-wire cable to the monitoring and alarm system
Disconnect the Phoenix connector from the potential-free contact input of the monitoring system. Use a small screwdriver to loosen the clamping screws on the connector. Connect the red signal wire to the potential-free contact input terminal on the monitoring system.
The terminals are labeled with a number.
Next, connect the black wire to the ground terminal of the corresponding potential-free contact input. Pay attention to the grounding symbol.
Installation of the combined glass breakage and vibration sensor
This sensor can be mounted on most surfaces using the included double-sided industrial mounting tape. Before mounting, please clean the adhesive surface with a suitable cleaner to remove any grease residue. If a window is to be monitored for glass breakage/vandalism, mount this sensor on the window frame if possible. This reduces the likelihood of false alarms triggered by passing (heavy) vehicles (trucks, buses, etc.).
If you do not have a suitable measuring device to check the contact pressure, you can proceed as follows:
Determine the initial contact point of the vibration detector by turning the adjustment screw clockwise until both contacts just touch.
The pressure at this point is approximately 1 gram.
A standard ohmmeter will show you exactly when the initial contact occurs.
After the initial contact, turn the adjustment screw 45 degrees to obtain approximately 6 grams.
Turn the adjustment screw 90 degrees to obtain approximately 11 grams.
Turn the adjustment screw 135 degrees to obtain approximately 16 grams.
Turn the adjustment screw 180 degrees to obtain approximately 21 grams.
This will give you the desired sensitivity of the vibration detection unit.
Note:
The contact pressure should not be set below 5 grams or above 25 grams.
Adjusting the sensitivity of the detector unit
A contact pressure below 5 grams is not recommended, as this can cause false alarms. A detector contact pressure above 25 grams is also not recommended, as it may permanently damage the vibration detection unit.
Furthermore, at a contact pressure above 25 grams, the detector may not be sensitive enough to reliably detect vibrations and shocks. If the glass break and vibration detector is to be mounted on the ceiling, the pressure must be increased, as the vibration detection unit faces downwards, thus reducing the contact pressure.
Since the glass break and vibration sensor can be mounted on various material surfaces (wood, glass, steel, drywall, brick), it may be necessary to adjust the detector's sensitivity. Turning the adjustment screw clockwise reduces the detector's sensitivity, while turning it counterclockwise increases it. Correct adjustment of the screw is necessary to avoid false alarms or the detector failing to trigger an alarm.
Didactum Vibration Sensor
