A Torque Sensor is a transducer that converts a torsional mechanical input into an electrical output signal. Torque Sensors,Torque Sensor,Torsional Signal Load Cell,Static Torque Load Cell Zhejiang Nanhua Electronic Technology Co., Ltd , https://www.nhloadcells.com
Here are 2 types of torque sensors:
a reaction that measures static torque,
and a rotary that measures dynamic torque.
Metal foil Strain Gauges are bonded onto a flexure of a structural member that deforms when a torsional or twisting motion is applied.
In most cases, 4 metal foil strain gauges are used to obtain maximum sensitivity and temperature compensation. 2 of the gauges are usually in tension, and 2 in compression, all 4 strain gauges are wired in a Wheatstone bridge configuration with compensation adjustments that correct for temperature errors.
Installation and implementation of the alarm system
If the 12 volts of the alarm probe is supplied by the control panel, the power consumption must be calculated by the number of probes. Do not overload the mainframe. In addition, due to the voltage drop caused by the long-distance transmission of 12 volt DC, the transmission line should not be too thin and too far, and the voltage obtained at the probe end should be sufficiently large.
If the distance is relatively long, the probe's power supply should be supplied close to the line to avoid the line loss and the probe does not work properly. Since the infrared detector is sensitive to the heat source, the radiators facing the vents, heating, stoves, and freezing equipment should be avoided as much as possible during installation; the microwave detectors are sensitive to moving objects, and cannot be placed against curtains, fans, water pipes, etc. during installation. In order to avoid false positives.
The detectors have environmental requirements. When installing, consider whether they are indoors or outdoors. If you are installing a waterproof enclosure outside, do not damage the detector.
There are generally tamper switches in the control panel and detector. In order to prevent malicious damage, the tamper switch should also be connected to the alarm circuit during installation and commissioning.
After the alarm system is connected, the power-on test is first performed, and the system operator changes the necessary entry and exit delay time, the zone alarm mode, and tests whether the alarm and the warning light are normal. It is best to carry out simulation experiments to ensure that each zone works properly. After the system is handed over, the user should immediately change the factory-set password.
In daily operation, especially when arming, make sure that the zone indicator light does not flash (no one in the zone) and then arm it. Generally, do not force the arming, otherwise it is easy to alarm (the alarm host can not distinguish whether it is a staff member or a thief, as long as there is a moving object , it will alarm).
Through the control panel, the defense can be divided into three categories: instant alarm, delayed alarm, 24-hour zone. The instant alarm is in the armed state, and the detector responds once it triggers the alarm host; the delay alarm is in the armed state, although the detector triggers, but the alarm host does not respond immediately, but enters the delay state (delay time) Can be programmed), the delay time has not been disarmed, the host will alarm; the 24-hour zone is usually connected by a smoke detector or a glass break detector, regardless of whether the host is in the armed state or in the disarmed state, as long as the detector has output, the host Just call the police.
To disarm, you must enter the password within the delay time, otherwise the host will treat you as an uninvited guest. The alarm bell will only be scared, and there will be no big problems, but it triggers other devices such as telephone dialers to cause unnecessary action by the public security organs, and the consequences are not solved.
A better alarm host has a “bypass†function, that is, disarming a certain road so that it does not alarm for a while, and other zones work normally.