Gas Detection 9 Programmable Analogue Front End creates Smart Sensor Technology
The LMP91000A, from Alphasense (UK), is a programmable Analogue Front End (AFE) for use in micro power chemical sensing applications. It is intended to be used within the sensor, creating a “smart sensor”. The AFE is designed for three-electrode single gas sensors and for two terminals oxygen sensor. This device provides all of the functionality for detecting changes in gas concentration based on a delta current at the working electrode.
The AFE generates an output voltage proportional to the cell current. Trans-impedance gain is user programmable through an I2C compatible interface from 3.4kOhm to 440kOhm making easy to convert current ranges from 5µA to 650uA full scale. Optimised for micro-power applications, the AFE works over a voltage range of 2.7V to 5.5 V. The cell voltage is user selectable using the on board programmability.
A temperature sensor is embedded and it can be power cycled through the interface. The output of this temperature sensor can be read by the user through the ‘Out’ pin. Together with the coeffi cients stored in the on board EEPROM, this information can be used to compensate for the sensor sensitivity drift over temperature. Additionally user controlled sensor test will be implemented. This function tests the sensor for proper connection (all 3 terminals) and proper function.
Depending on confi guration, total current consumption for the device can be less than 10µA running. For power savings trans-impedance amplifi er (TIA) can be turned off and instead a load impedance equivalent to the TIA’s inputs impedance is switched in.
A Technical Data Sheet can be downloaded from the new Alphasense web site.
27048pr@reply-direct.com
Multi-Gas Analysers that Beat Competition
For More Info, email: email:
The GASTRACK Multi Gas Analysers from SST Sensing Ltd (UK) use innovative and creative technical solutions to deliver high quality and affordable analysers which exactly meet customer application requirements. Designed to ensure customers have the complete fl exibility to customise their own sensing ranges, output ranges and alarm levels; choose from a range of gas types and mounting options (wall, desk or 19” rack) and have the added benefi t of touchscreen navigation which allows the customer to easily set displays in numerical, graphical or combined formats.
For More Info, email: email:
Analogue, digital and communications interfaces such as 0-10V, 4-20mA, RS232, RS485, Ethernet and Relays are available to choose from. Audio visual alarms, data- logging facilities, simple user calibration function and optional internal gas sampling pump are all added features that give the GASTRACK Multi Gas Analysers a competitive edge.
The GASTRACK Analysers, launching the end of 2014, can be used in a wide range of applications including industrial process control, food/beverage packaging, multi-gas detection in laboratories, cellars, factories and other industrial areas, air quality monitoring, multi story and underground car parks, incubation, fermentation monitoring and poultry production.
Newly Developed Sensor Capsule allows Continuous Gas Measurement in Hazardous Areas
For More Info, email: email:
For More Info, email: email:
The ADOS GTR 210 gas transmitter, from ADOS GmBH (Germany), is suitable for the continuous measurement of gases in normal areas as well as areas where there are risks of explosion.
By employing 6 different types of sensor, noxious, explosive and non- combustible gases and vapours can be measured.
The GTR 210 has been specifi cally designed for tough industrial applications. Thanks to a newly developed sensor encapsulation, the gas transmitter achieves the international protection mark IP6; a version with marine water resistivity is even available.
Operational temperature can be as high as 60°C. Besides, the device equipped with a pellistor sensing element or an infrared sensor complies with the safety standard SIL 1, and with the functional test accoding to EN 60079- 29-1.
Display of the measured gas concentration and the adjustable alarm thresholds are shown on a multicoloured graphic display. The keyboard input is by way of a touchpad.
A generated current signal, proportional to the measured concentration of gas, is transmitted to an evaluation unit placed in a safe area, away from any dangers of explosion.
The type test of the explosion-protected gas transmitter, is completed by the
DEKRA.ATEX test certifi cate: DEKRA 11 ATEX 0257 X, IECEx test certifi cate: IECEx DEK 11.0090 X,Type of protection: Ex d e ia mb IIC T4 Gb, SIL 1 & functional test: ATEX Certifi cate –> BVS 12 ATEX G 001 X.
For More Info, email: email:
For More Info, email: email:
31812pr@reply-direct.com
Axetris AG Switzerland
Phone: +41 41 662 76 76 Email:
axetris@axetris.com
www.axetris.com
For More Info, email: email:
For More Info, email: email:
Mass Flow Modules
3267ad@reply-direct.com
www.envirotech-online.com IET September / October 2014
• Excellent repeatability • High turn-down ratio • Fast settling time • Platinum-based MEMS
Laser Gas Detectors IR Sources
31780pr@reply-direct.com E6000
• Original Manufacturer which is a Listed Company in China
•
www.hwsensor.com •
sales@hwsensor.com • +86-371-67169080
For More Info, email: email:
ISO14001
Mass Flow Meters and Controllers Designed for OEM
Henin Hanwei
24.5.indd 1
For More Info, email: email:
ISO9001
1337ad@reply-direct.com OHSAS18001 E1000 • Independent Research and Development
Portable Multi and Single Gas Detector
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80
