Mounting a radar sensor - AdvanceGuard
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Mounting a sensor HDR 200/300 Series
Navtech Radar supply a range of radar sensors to mount on posts to suit various installation sites.
Optimal mount height for a radar will depend upon a suitable site survey and are normally between 2 - 10 metres.
Mount posts can have integrated CCTV camera arm mounts so radar and camera can be located on a single post.
Telescopic mount posts which extend over a range of heights can make radar installation easier and safer.
Without a suitable site survey commissioning the system may require the raising or lowering of a sensor to clear obstacles or allow for the local terrain.
Where mounting HDR 200/300 Series radar this best practice is recommended. Each Radar should be mounted to the post mount plate using the items in the supplied stainless steel mounting bolts pack which contains:
M6 x 60mm hex head bolts x4
M6 Nut x7
M6 Nyloc Nut x3
M6 x 25mm Penny Washer x14
M6 Spring Washer x7
For each of the mounting holes, the bolt is fed from underneath and locked onto the mounting plate with a nut and washers. Two more nuts and washers are then used, a plain nut above and Nyloc nut below the sensor plate so that the sensor can be positioned anywhere up or down the long bolt thread as necessary. See images below.
For HDR Series 200 and Series 300 radar the power and data connectors are made underneath the units. These connections are best made before locking down the radar in position. See section Connecting a radar sensor - AdvanceGuard.
We recommend that you begin with the sensor completely horizontal and then carefully adjust it to suit the using the method described in the later sections.
The Nyloc M6 nut used below the radar is so that the radar can be easily positioned and locked in position on the adjustment bolt. The Nyloc nut then holds its commissioning position should the radar be removed and replaced for any reason.
Failure to use this method could result in incorrect remounting of the radar, resulting in poor radar performance and/or a rise in false alarms. This could require radar re-commissioning by a Navtech engineer on site.
HDR 100 Series Mounting
The HDR 100 Series can be mounted on a standard HDR 200/300 series post by using an adapter plate Navtech part MBP0580. Or on a dedicated post or other structure (e.g. walls, roofs, gantries) by use of standard CCTV mounting bracket. For correct operation of the radar Navtech recommend that any bracket should not move more than half a degree in any direction whilst carrying a radar under the required operating conditions (customer site specific). It should also be ensured that the radar line of sight is not obscured by any existing infrastructure.
To allow the radar to be installed in the optimum position relative to the detection zone the radar should be fitted to a mounting plate which allows the tilt to be adjusted (see images below). See HDR 100/200/300 Series - Mounting Plate for a mount plate diagram. The HDR 100 Series is fitted to the mounting plate using 4x M8 bolts in a 4" PCD pattern (standard CCTV mounting). The procedure for adjusting the tilt to optimise the radar performance is detailed in the section Levelling a sensor.
The mounting plate provides a simple method to fine tune the incline of the radar. For each of the mounting holes, the bolt is fed from underneath and locked onto the mounting plate with a nut. Two more nuts are used below the radar base plate and another is used above so that the sensor can be positioned anywhere up or down the bolt thread, as necessary. An extra nut should then be added once the radar is optimally levelled to lock off the position.
Mounting the enclosure and power supply
An IP-rated equipment enclosure is normally located at the base of the radar post and is used to house the radar power supply unit, however, other items may also need to be housed within the enclosure:
If the radar is mounted more than 70 metres from the RPU server then it is recommended that a fibre optic ethernet link is used. In this case a media converter would also need to be housed within the enclosure.
If there is a camera option on the post then the camera power supply unit and a possibly a video encoder will also need to be housed.
IMPORTANT: To prevent floating voltage levels on the low output of the radar sensor power supply unit, link the 0v output to earth.
For details of the power supply please see Power Supply Details
IMPORTANT: Note that each radar is supplied with a pre-installed vent plug. This vent plug maintains ingress protection while allowing radar internal and external pressure to equalize and should be installed at all times. Removing or blocking the vent plug in any way could invalidate the warranty in the event of damage.
Next : Connecting a radar sensor
Related information
Patent Information
Patent No.: GB 2 518 344
US Patent Application No.: US14/901 862
International Application No.: PCT/GB2014/052018