Manufacturers of AAQMS and CAAQMS
#http://aaqms.in

Vasthi Instruments are global leaders in manufacturing of AAQMS (ambient air quality monitoring System) for continuous monitoring of pollutant gases (NO2, SO2, O3, CO) and suspended particulate matter PM10 and PM2.5 Monitors, Zero Air Generator, Dynamic Dilution Calibrator, and have been supplying instruments to customers worldwide, Our multidisciplinary team of scientists, physicians, engineers, and regulatory consultants with decades of global experience brings you the quintessential mechanism that provides complete safety accuracy and durability. Vasthi Instruments was formed with visionary thinking and innovative ideas resulting in innovative products and solutions. We enhance our product quality by the continuous process of research and development. We have WIDE range of models to suite various site conditions and processes.

Ambient Oxides of Nitrogen Analyzer:

http://www.vasthi.com/ambient-oxides-of-nitrogen-analyzer/

 

Nitric oxide Analyzer using chemiluminescence detection principle, combined with the most advanced microprocessor technology provides accurate and reliable low NOx detection of ppb-ppm level, suitable for atmospheric monitoring and dilution of pollution online monitor application.

Nitric oxide work is the basic principle of chemiluminescence Analyzer. 03 and NO reaction after the absorption of chemical energy, is inspired to the excited state, and excited when you return to the ground state, and release energy in the form of photons. Chemiluminescence intensity is proportional to the concentration of gas can be quantitative measurement of material.

Full control over all the functions of this instrument at the same time, can also provide important operating parameters of online instruction. During the measurement, real-time automatic compensation of the temperature and pressure changes.

Ambient Sulphur Dioxide Analyzer

 http://www.vasthi.com/ambient-sulphur-dioxide-analyzer

 

Sulfur dioxide Analyzer using Ultraviolet fluorescence principle, combined with the most advanced microprocessor technology provides accurate, reliable low ppb-ppm levels of SO2, suitable for atmospheric monitoring and dilution of pollution online monitor application.Work is the basic principle of UV fluorescence method for sulfur dioxide Analyzer. SO2 reception of ultraviolet energy excited state molecules return to ground state, issued a characteristic fluorescence, fluorescence intensity of material can be quantitatively measured. Through the use of regular measurement of dark current compensation enlarger PM d drift and corrected using the reference detector UV lamp intensity change, and improve the stability of measurements. Removal And unique optical design of efficient hydrocarbon removal effectively eliminates inaccuracies created by interference.

Full control over all the functions of this instrument at the same time, can also provide important operating parameters of online instruction. During the measurement, real-time automatic compensation of the temperature and pressure changes.

Stack Opacity Meter: 

http://www.vasthi.com/stack-opacity-meter

Opacity Monitoring System has been designed for measuring the pollutants with in the Stack Emission.
Vasthi has mainly designed the Stack Opacity Meter for Cement Plants, Steel Plants etc.,

Technical Specifications:
No. Parameter Units Min Max Comment
1 Path Length (flange to flange) m 0.5 20 Flange-to-flange separation
2 Measuring Range % 0.0 100.0 User selectable
3 Accuracy % -2 +2
4 Resolution % 0.1 Display resolution
5 Damping s 1 60 Selectable
6 Drift with Temperature % -2 +2 Over any 20°C in the operating range
7 Operating Wavelength nm 510 540 Green LED
Power & Air Requirements
8 Voltage Vdc +24 Optional 90-260Vac PSU available
9 Voltage Tolerance % -10 +10
10 Nominal Current Consumption mA 400
11 Power Up Current Consumption mA 400
12 Air Supply Volume Flow L/min 50 200 To each air-purge body.
13 Air Supply Fitting:1” BSP threaded aperture in each air-purge body Cable and Wire
14 Cable type – TX/RX Interconnection cores 6 Screened multi-core, such as Belden 9873
15 Cable type – OI/RX Interconnection cores 4 Screened multi-core, such as Belden 9873
16 Wire Size at Terminal Connections AWG 20 14 Interface Options
17 Serial CommsModBus RTU via RS485 (OI or TRX) Internal USB (OI), external USB (RX)
18 Analogue Output (one) mA 4 20 Isolated and scalable
19 Digital Relay Contacts (two) A 0 3 @30Vdc (signal level and data valid)
Physical
20 Ingress Protection: – TX/RX Heads IP65 For external use
21 Ingress Protection: – OI Wall Mounted IP65 Hinged door and terminal compartment shut.
– OI Panel Mounted IP64 From front face of panel when installed.
22 Ambient Operating Temperature °C -20 +55 Air temperature around the heads.
23 Operating Humidity % 100 Air humidity around the heads.
24 Gas Temperature °C +600 Heat insulating gaskets included.
(Higher temperatures on request)
25 Regulatory Compliance 89/336/EEC (Electromagnetic Radiation) 73/23/EEC (Low Voltage)
26 Materials: – TX/RX Heads 316 Stainless Steel (powder coated)
27 Materials: – Air-Purge Bodies Powder coated cast aluminium or stainless steel for demanding installations Materials: – OI Wall Mounted UL rated polycarbonate enclosure; aluminium front panel with PU laminate overlay and with nylon cable glands
28 – OI Panel Mounted Powder coated steel back-box; aluminium front panel with PU laminate overlay and with nylon cable glands
29 Weight kg 2.5 TX or RX head plus Aluminium Air-Purge body
30 Weight: – OI Wall Mounted kg 1.3 – OI Panel Mounted 1.3