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China deep penetrating metal detector manufacturers & suppliers
Xiamen Chbpack Industrial Co., Ltd.
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150416-A-ZZ999-002-- Soldiers with the 2nd Battalion, 505th Parachute Infantry Regiment, 3rd Brigade Combat Team, 82nd Airborne Division, give a class on assembling metal detectors to Iraqi soldiers of the 75th Brigade, 16th Division, at Besmaya Range Complex, Iraq, April 16, 2015. The training, part of the U.S. led coalition’s Build Partner Capacity mission, was to aid the Iraqi forces in the fight against the Islamic State of Iraq and Levant. (Photo by Sgt. Deja Borden, CJTF-OIR Public Affairs)
Three Lawrence Livermore National Laboratory teams are evaluating many elements and compounds in their search for new radiation detection materials. Rebecca Nikolic and her team are developing a detector made of silicon pillars and boron for capturing neutrons. etched a silicon wafer with pillars 20 micrometers high, and university collaborators used chemical vapor deposition to fill in the spaces between the pillars with boron. The prototype device had an efficiency of 20 percent, the highest efficiency reported for such a detector. And, it turns out that size matters. “We have found that taller pillars, which provide a thicker boron layer, are more efficient at capturing neutrons,” says Nikolic. The team has recently completed a design with 50-micrometer-tall pillars to increase efficiency. [More information]
Where would we be without the bee?
The obligatory "bee on a flower" shot. Come on... we all do it.
On a chive flower... in the herb garden at home in Sussex.
One of the neat things about railroading in a giant canyon is the cool little details along the way, like this D&RGW slide detector, comprised of dozens of wires. If a rock breaks through the wires, the circuit breaks, causing a red signal. Pretty ingenious stuff, no?
Exploded View from ArnoSync Detector - See notes on picture for more details.
There are no screws used yet to hold the parts together. I use the pressing force ...
Later some part may be glued or fixed by straps.
+++ DISCLAIMER +++
Nothing you see here is real, even though the conversion or the presented background story might be based historical facts. BEWARE!
Some background:
The Ling-Temco-Vought A-7 Corsair II was a carrier-capable subsonic light attack aircraft introduced to replace the Douglas A-4 Skyhawk. The A-7 airframe design was based on the successful supersonic Vought F-8 Crusader, although it was somewhat smaller and rounded off. The Corsair II initially entered service with the United States Navy during the Vietnam War. It was later adopted by the United States Air Force, including the Air National Guard, to replace the Douglas A-1 Skyraider and North American F-100 Super Sabre. The aircraft was also exported to several foreign countries, including Greece, Portugal, Thailand and New Zealand.
For the latter operator, the Corsair II was part of a major modernization campaign in the early 1970s. For instance, in 1970 14 McDonnell Douglas A-4 Skyhawks were purchased to replace the Vampire FB5's, which had been the primary light attack aircraft for the RNZAF for years, but the type was hopelessly outdated.
Furthermore New Zealand was also looking for a replacement of its similarly ageing Canberra fleet. These 31 aircraft were also phased out of service in mid 1970, and the A-7 chosen as the RNZAFs new fighter bomber because of its proven all-weather strike capability and advances avionics.
The RNZAF bought and operated 22 LTV A-7 Corsair II aircraft primarily in the coastal defense/anti-ship and sea patrol roles, air interdiction and air defense roles being secondary duties. The RNZAF Corsair II was very similar to the US Navy’s A-7E, even though the machines would only be operated form land bases. Designated A-7N, the machines featured an AN/APN-190 navigational radar with a Doppler groundspeed and drift detector plus an AN/APQ-128 terrain following radar. For the deployment of smart weapons, the machines were outfitted with a Pave Penny laser target acquisition system under the air intake lip, similar to the USAF’s A-7D, and could carry a wide range of weaponry and sensors, including AN/AAR-45 FLIR pods for an improved all-weather performance. Against enemy ships and large ground targets, visually guided smart bombs (AGM-62 and the more modern GBU-8 HOBOS) were bought, as well as AGM-65 Maverick against smaller, high priority targets.
Active service lasted between 1975 and 1999, and the A-7Ns were originally allocated between RNZAF 2 and 75 Squadron at Ohakea, where they were operated together with A-4K and TA-4K. The latter were also emplyed for A-7N pilot conversion training, since the RNZAF did not operate any Corsair II two seaters.
Several times the Squadron deployed to Clark Air Base in the Philippines and to Hawaii with both of the Corsair IIs and Skyhawks to exercise with the United States Air Force. Furthermore, the annual deployments as part of the Five Power Defence Agreement (called Exercise Vanguard) had the Squadron visit Australia, Singapore, Malaysia and Thailand to practice with those countries. Two RNZAF A-7s of 75 Squadron even made visits to Great Britain.
In the early Nineties the Corsair IIs started to suffer from numerous maintenance and logistic problems due to the lack of spare parts and general financial problems. This also prevented a major avionics update and the procurement of AGM-84 Harpoon missiles for the A-7Ns and the RNZAF P-3 Orion maritime patrol aircraft. The maintenance situation became so dire that several aircraft were cannibalized for spare parts to service other fighters. In 1992 only sixteen A-7Ns remained operational. This resulted in the available fighters no longer being assigned and dedicated to one specific squadron, but shared and assigned to one of the RNZAF combat squadrons (2, 14 and 75 Squadron, respectively), as needed.
During its 24 years of duty in the RNZAF, the A-7 fleet suffered 8 severe accidents with aircraft losses (and two pilots being killed). Nevertheless, the introduction of the A-7 was seen as a success due to the evolution that it allowed the Air Force in aircraft maintenance, with focus in modern computer and electronic systems, and in the steady qualification of pilots and technicians.
In 1999, the National Government selected an order of 28 F-16A/B Fighting Falcon aircraft to replace the complete fleet of A-4 Skyhawks and A-7 Corsair IIs, but this procurement plan was cancelled in 2001 following election by the incoming Labour Government under Helen Clark. This was followed by the disbanding of several fixed wing aircraft squadrons, with the consequence of removing the RNZAF's air combat capability. The last A-7 flight in RNZAF service took place on 1st of October 2001. Subsequently, most of the RNZAF's fighter pilots left New Zealand to serve in the Royal Australian Air Force and the Royal Air Force.
General characteristics:
Crew: 1
Length: 46 ft 2 in (14.06 m)
Wingspan: 38 ft 9 in (11.8 m), 23 ft 9 in (7.24 m) wings folded
Height: 16 ft 1 in (4.9 m)
Wing area: 374.9 sq ft (34.83 m²)
Airfoil: NACA 65A007 root and tip
Empty weight: 19,127 lb (8,676 kg)
Max takeoff weight: 41,998 lb (19,050 kg) overload condition.
Fuel capacity: 1,338 US gal (5,060 l; 1,114 imp gal) (10,200 lb (4,600 kg)) internal
Powerplant:
1 × Allison TF41-A-2 non-afterburning turbofan engine, 15,000 lbf (66.7 kN) thrust
Performance:
Maximum speed: 600 kn (690 mph; 1,111 km/h) at Sea level
Range: 1,070 nmi; 1,231 mi (1,981 km) maximum internal fuel
Ferry range: 1,342 nmi; 1,544 mi (2,485 km) with maximum internal and external fuel
Service ceiling: 42,000 ft (13,000 m)
Wing loading: 77.4 lb/sq ft (378 kg/m²)
Thrust/weight: 0.50
Take-off run: 1,705 ft (519.7 m) at 42,000 lb (19,000 kg)
Armament:
1× M61A1 Vulcan 20 mm (0.787 in) rotary cannon with 1,030 rounds
6× under-wing and 2× fuselage pylon stations (for mounting AIM-9 Sidewinder AAMs only)
with a total ordnance capacity of 15,000 lb (6,803.9 kg)
The kit and its assembly:
An idea that had been lingering on my project list for some years, and a recent build of an RNZAF A-7 by fellow modeler KiwiZac at whatifmodelers.com eventually triggered this build, a rather simple alternative livery whif. I had this idea on the agenda for some time, though, already written up a background story (which was accidently deleted early last year and sent the project into hiatus - until now) and had the kit as well as decals collected and stashed away.
The basis is the Hobby Boss A-7, which is available in a wide range of variant in 1:72 scale. Not cheap, but IMHO the best Corsair II kit at the moment, because it is full of ample surface details, goes together nicely and features a complete air intake, a good cockpit tub and even some maintenance covers that can be displayed in open position, in case you want to integrate the kit in a diorama. In my case it’s the A-7E kit, because I wanted a late variant and the US Navy’s refueling probe instead of the A-7D’s dorsal adapter for the USAF refueling boom system.
For the fictional RNZAF A-7N no fundamental changes were made. I just deliberately used OOB parts like the A-7D’s Pave Penny laser targeting pod under the air intake. As a personal addition I lowered the flaps slightly for a more lively look. Around the hull, some blade antennae were changed or added, and I installed the pair of pitots in front of the windscreen (made from thin wire).
The FLIR pod came with the kit, as well as the drop tank under the inner starboards wing pylon and the AIM-9Bs. Only the GBU-8s were externally sourced, from one of the Hasegawa USAF ordnance sets.
For the finalized kit on display I mounted the maintenance covers in open position, but for the beauty pics they were provisionally placed in closed position onto the kit’s flanks. The covers had to be modified for this stunt, but since their fit is very good and tight they easily stayed in place, even for the flight scenes!
Painting and markings:
This was the more interesting part – I wanted „something special“ for the fictional RNZAF Corsair II. Upon delivery, the USAF SEA scheme would certainly have been the most appropriate camouflage – the A-4K’s were painted this way and the aforementioned inspiring build by KiwiZac was finished this way.
Anyway, my plan had been from the start a machine in late service with low-viz markings similar to the A-4Ks, which received an attractive three-tone wrap-around scheme (in FS 34102, 34079 and 36081) or a simple all-around coat of FS 34079.
Both of these schemes could have been a sensible choice for this project, but… no! Too obvious, too simple for my taste. I rather wanted something that makes you wonder and yet make the aircraft look authentic and RNZAF-esque.
While digging for options and alternatives I stumbled upon the RNZAF’s C-130 Hercules transporters, which, like Canadian machines, carry a wrap-around scheme in two tones of grey (a light blue grey and a darker tone with a reddish hue) and a deep olive green tone that comes close to Dark Slate Grey, together with low-viz markings. A pretty unique scheme! Not as murky as the late A-4Ks and IMHO also well suited for the naval/coastal environment that the machine would patrol.
I was not able to positively identify the original tones on the CAF and RNZAF Hercs, so I interpreted various aircraft pictures. I settled upon Humbrol 163 (RAF Dark Green) 125 (FS 36118, Gunship Grey) and Revell 57 (RAL 7000, similar to FS 35237, but lighter and “colder”). For the wraparound scheme I used the C-130s as benchmark.
The cockpit became Dark Gull Grey (Humbrol 140) while the landing gear and the air intake duct became – behind 5mm of grey around the intake lip - white. The maintenance hatches’ interior was painted with a mix of Humbrol 81 and 38, for a striking zinc chromate primer look.
After a light black ink wash the kit received some panel post-shading for more contrast esp. between the dark colors and a slightly worn and sun-bleached look, since the aircraft would be depicted towards the end of its active service life.
Decals were the most challenging task, though: finding suitable RNZAF roundels is not easy, and I was happy when Xtradecal released an appropriate sheet that offers kiwi roundels for all positions (since motifs for port and starboard have to be mirrored). The Kiwi squadron emblem actually belongs to an RNZAF A-4K (from an Old Models sheet). The serial codes were puzzled together from single letter (TL Modellbau), most stencils come from the Hobby Boss OOB sheet.
A simple build, yet a very interesting topic and in the end also an IMHO very cool-looking aircraft in its fictional livery. Building the Hobby Boss A-7 was easy, despite some inherent flaws of the kit (e .g. totally blank dashboard and side consoles, and even no decals included!). The paint scheme lent from the RNZAF Hercs suits the SLUF well, though.
BNL's Instrumentation Division, in collaboration with the NASA Marshall Space Flight Center, developed silicon drift detectors for x-ray spectroscopy, which use an array of hexagonal-shaped detectors. These detectors are the first in a generation of sensors that may be used on future space missions, in order to map surfaces of various solar bodies with x-ray fluorescence, including the moon, Mercury, asteroids, Martian satellites, and Europa, Jupiter's moon.
China treasure hunting metal detector manufacturers & suppliers
Xiamen Chbpack Industrial Co., Ltd.
E-mail: mail@chbpack.com
Good Price,for sale!
CHBPACK Checkweigher(check weigher) & metal detector business dept
China metal detector hire manufacturers & suppliers
Xiamen Chbpack Industrial Co., Ltd.
E-mail: mail@chbpack.com
Good Price,for sale!
CHBPACK Checkweigher(check weigher) & metal detector business dept
This detector was removed from a building where it has was installed. The detector was reading a higher level of contamination that normal but was still within its normal operating parameters.
The accumulation of excess debris on the outside of one side of the detector indicates that it was located adjacent to an outlet from an HVAC system.
In circumstances such as this, additional maintenance precautions must be taken to ensure the operational integrity of the fire alarm system is maintained.
The Washington Monument is an obelisk on the National Mall in Washington, D.C., built to commemorate the first American president, General George Washington. The monument, made of marble, granite, and bluestone gneiss,[1] is both the world's tallest stone structure and the world's tallest obelisk, standing 555 feet 5 1⁄8 inches (169.294 m).[n 1] Taller monumental columns exist, but they are neither all stone nor true obelisks.[n 2] Construction of the monument began in 1848, but was halted from 1854 to 1877, and finally completed in 1884. The hiatus in construction happened because of co-option by the Know Nothing party, a lack of funds, and the intervention of the American Civil War. A difference in shading of the marble, visible approximately 150 feet (46 m) or 27% up, shows where construction was halted. Its original design was by Robert Mills, an architect of the 1840s, but his design was modified significantly when construction resumed. The cornerstone was laid on July 4, 1848; the capstone was set on December 6, 1884, and the completed monument was dedicated on February 21, 1885.[7] It officially opened October 9, 1888. Upon completion, it became the world's tallest structure, a title previously held by the Cologne Cathedral. The monument held this designation until 1889, when the Eiffel Tower was completed in Paris, France. The monument stands due east of the Reflecting Pool and the Lincoln Memorial. The monument was damaged during the Virginia earthquake of August 23, 2011 and Hurricane Irene in the same year; it remains closed to the public while the structure is assessed and repaired.[8] The National Park Service estimates the monument will be closed until 2014. Difficulties in repair include complexities such as the time needed to erect scaffolding.[9]
China surveyor metal detector manufacturers & suppliers
Xiamen Chbpack Industrial Co., Ltd.
E-mail: mail@chbpack.com
Good Price,for sale!
CHBPACK Checkweigher(check weigher) & metal detector business dept
China tablet metal detector manufacturers & suppliers
Xiamen Chbpack Industrial Co., Ltd.
E-mail: mail@chbpack.com
Good Price,for sale!
CHBPACK Checkweigher(check weigher) & metal detector business dept
I know everyone has done this before. RFID and arduino that is. But looking at the example code it looks like the antenna is always in receive mode. I am not sure how this affects the life of the chip / reader but I thought of adding a way to detect human presence before activating the receiver.
I found some little IR heat detector (here: www.allelectronics.com/make-a-store/item/IRD-10/INFRARED-... and tossed together some analog read code and viola. Now when the IR detector detects over a certain variable heat temp it activates the RFID reader.
I will post the code and write up on my blog.
The particle detector for the BaBar experiment at the Stanford Linear Accelerator Center. This image is a composite of three rows of two pictures, taken free-hand with a Nikon D70s and a 18-70mm Nikkor lens at 18mm, and stitched in rectangular projection using Pano Tools.
Many, many cables connect the many, many plates of the NOvA near detector.
NOvA: NuMI Off-Axis v(sub)e Appearance. Expanding an acronym usually gives a reader a better idea of what the acronym is all about; maybe not so much here. NuMI is Neutrinos at the Main Injector, a project that sends neutrinos from Fermilab in a beam toward an old iron mine in Minnesota in an attempt to detect neutrino oscillations.
Located about 100 meters underground, the detector is somewhat shielded from cosmic rays and other interference.
If Custom Officers determine the contents to be suspicious, they conduct a detailed radiation assessment using handheld radiation detectors. This equipment enables them to determine the exact radionuclide and the location of the material. Padang Besar, Malaysia, October 2012
Photo Credit: Dean Calma / IAEA
The GTW 5936 the last GT SD40-2 in GT Blue and Red on CNs roster splits the MP 55.5 Defect detector on the old J as Mc Henry Rd in Lake Zurich, IL
China lorenz metal detector manufacturers & suppliers
Xiamen Chbpack Industrial Co., Ltd.
E-mail: mail@chbpack.com
Good Price,for sale!
CHBPACK Checkweigher(check weigher) & metal detector business dept
China metal detector schematic manufacturers & suppliers
Xiamen Chbpack Industrial Co., Ltd.
E-mail: mail@chbpack.com
Good Price,for sale!
CHBPACK Checkweigher(check weigher) & metal detector business dept
Brookhaven National Lab invited both amateur and professional photographers to a three-hour, behind-the-scenes Photowalk of the laboratory on Saturday, Sept. 22, 2012. Participants were able to visit and photograph five major experimental facilities that are not usually accessible to the public including the Relativistic Heavy Ion Collider (RHIC) Tunnel, RHIC’s STAR Detector, RHIC’s PHENIX Detector, National Synchrotron Light Source, and National Synchrotron Light Source II.
Image of the Vertical Support Beam (VSB) worksite on the Alpha Magnetic Spectrometer AMS-02 taking during ESA astronaut Luca Parmitano's second spacewalk to service the International Space Station's cosmic ray detector.
Here Luca cut tubes in preparation to install a new cooling system. He made them safe by capping them and will connect them during the third spacewalk in the series.
ID: 516D5888
Credit: ESA/NASA
China metal detector rating manufacturers & suppliers
Xiamen Chbpack Industrial Co., Ltd.
E-mail: mail@chbpack.com
Good Price,for sale!
CHBPACK Checkweigher(check weigher) & metal detector business dept
I've included this extract from a Wireless encyclopeadia writen in the 1920's. As you can see the idea of biasing a detector diode is by no means new. Hope you find it interesting.
International inspectors may have a new tool in the form of an antineutrino detector, that could help them peer inside a working nuclear reactor. Lawrence Livermore National Laboratory and Sandia National Laboratories physicists and technologists close the water shield surrounding the antineutrino sensitive liquid scintillator in the "Tendon Gallery" of a commercial nuclear reactor. In this gallery, which is only 25 meters from the 3GW reactor core, 10^17 antineutrinos pass through the detector every second. [More information]