A single unit, based around a powerful 32-bit floating-point ARM microcontroller, designed to provide a complete analysis of local air quality.
The unit deploys four electrochemical sensors, an NDIR CO2 sensor and a laser particle monitor. These combine with a temperature and relative humidity sensor, and GPS is used for accurate location and timestamping.There is also an optional microphone to provide ambient noise information. Data is stored locally and uploaded to a central management site.
Specification
accurate electrochemical cells (Alphasense A4) monitoring CO, NO, NO2 , and O3 down to ppb levels. Other gases can be sensed if required (eg SO2 ).
digital NDIR CO2 sensor (Atmospheric Sensors/Alphasense or SenseAir).
laser optical particle counter (Alphasense) to provide PM1, PM2.5 and PM10 readings.
PID sensor for volatile organic compounds (VOCs) (Alphasense).
temperature and relative humidity sensor (Atmospheric Sensors).
high-sensitivity GPS module capable of accurate location and time measurement even inside buildings.
microphone to characterise ambient noise, based on a hardware RMS level detector.
data can be sampled at high rates, which are normally averaged over 20 seconds, with data transmission every 15 minutes. This can be configured to suit each application.
communication link to remote database via GPRS. This includes the ability to 'store and forward' data in times when the network is down or temporarily overloaded. The unit requires a data-capable SIM card service, which can be provided either by Atmospheric Sensors or by other providers by discussion.
local storage on 16GB SDCard of extended results from test for later recovery and to act as a backup of results sent over the GPRS link.
mains power supply, with waterproof connector.
externally visible LED to indicate unit status.
the unit may be used either indoors, or outdoors if protected by a Stevenson Screen, or similar enclosure. Wall mount brackets are supplied with each unit, permitting easy installation.
We just processed in a large batch of chipsets. I posted below current inventory and attached pictures of each type of chipset. Please review and let me know your interest/offer. Chipset 1 (H61) â?? 3,350 units Chipset 2 (H81) â?? 2,206 units Chipset 3 (H55) â?? 436 units Chipset 4 (B250) â?? 1,600 units Chipset 5 (SR406) â?? 345 units Thank you, Divanti Group
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Supplier: Air conditioner spare parts , compressors , gases and motors.
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1800M3/H Electric fire monitor / water,foam monitor Water/ foam monitor for FIFI 2 system Specification Medium : Water/ Foam Certificate : LR Type : electric remote control double pipe fire monitor , with JET & SPRAY TYPE Model : SS250EL Capacity : 1800m3/h( water) Foam : 300m3/h (adjustable) Foam type : AFFF Throw of range : >150m(water) / >85m(Foam ) Height of range : Water : from the water level >80m (it's 20m from the nozzel of fire monitor to the level of water ) Foam: from the water level>50m (it's 20m from the nozzel of fire monitor to the level of water) Inlet pressure : 1.3 Mpa Operational type : motor driven fire monitor( 380VAC 3ph 50Hz) , with Local hand operation The electricity can be changed according to your requirement Horizontal : +175°to -175°(with limited switch , it's adjustable ) Vertical : -45° to +75° protection standard :IP56 The motor insulation class : F Material : Body : stainless steel 304 Pipe : stainless steel 304 Recoil: 27.0KN (Water) , 9.2KN (Foam)
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Telephone remote control for air conditioner While you away from home/office. You can control your air conditioner while away from home/office just by making a phone call. This simple operation only requires the entry of password. Control by telephone before returning home/office so that your room will be at a comfortable temperature when you return. Can be used from mobile phones. Model tr-001 features: 1) control your air conditioner by phone call 2) record various remote control codes, compatible with most air conditioners 3) easy operation method and stable performance 4) password safeguard 5) voice prompt, easy to choose the operations you want 6) comes standard with cooling, heating, dehumidification and switch off functions 7) easy to be installed on benchtop/wall, plug-and-play 8) self-taught function, can be used for the controlling of other home appliance such as tv. For business partners: No matter you are a manufacturer/distributor/accessory provider of the air conditioners or an architecture contractor or upholsterer, it is a good choice for you to own this product.
