News and Releases
Continuous Fumigation Monitor Detects Sub TLV Concentrations of Methyl Bromide
A continuous gas monitoring system
designed to detect and measure sub threshold limit value (TLV) concentrations
of methyl bromide is now available from PureAire Monitoring Systems.
Extremely sensitive and highly specific, the PureAire Air check Advantage
Methyl Bromide Monitoring System is capable of low 0.5 parts-per-million
(PPM) detection of this highly toxic chemical. Designed for use in fumigation
chamber clearing and storage areas, it is ideal for providing worker
protection at orchards, growers, international airports, and seaports
where commodities are fumigated before shipping.
Monitors Detect Leaks of Water Disinfection Chemicals
PureAire
Monitoring Systems has a line of economical, self-contained detection
systems that alert personnel in water treatment plants to potentially
hazardous leaks and releases of several common disinfection gases.
Available for chlorine, chlorine dioxide and ozone, STX-PA Gas Monitors
respond quickly to low level disinfectant leaks, yet are not permanently
damaged by catastrophic or prolonged releases. The instruments feature
a local digital display, local audio/visual alarm indicators, programmable
dual-level concentration alarms, and built-in alarm and system fault
relays. Measurement information is also output as a 4-20 mA analog
signal.
The STX-PA Monitor consists of a renewable, plug-in electrochemical sensor and controller/transmitter and operates on 24 VDC power.
Ammonia Sensor Provides Reliable Leak Detection down to –40C
A
renewable electrochemical sensor for the detection and measurement
of ammonia (NH3) is available from PureAire Monitoring Systems. Designed
to respond quickly to potentially hazardous ammonia leaks and releases
in refrigeration systems, fertilizer plants, chemical processing plants,
and other facilities where ammonia is used or produced. The PureAire
Ammonia Sensor is available with either 0 to 75 ppm, 0-100, 0-500 or
0 to 1000 ppm measurement range. The sensor’s output remains stable
and repeatable at –40C without the use of a heater.
Unlike disposable electrochemical sensors, which can be poisoned and permanently damaged by high NH3 concentrations or low temperatures, the PureAire Ammonia Sensor features a liquid electrolyte, which can be quickly and easily replenished to restore proper operation. In addition, it is unaffected by high humidity levels or temperature fluctuations. The PureAire Ammonia Sensor does not respond to IPA, fruit juices, propane and other substances, which often interfere with the performance of competitive sensors.
Portable Monitor Detects and Measures Chlorine Dioxide
A
portable instrument for the detection and measurement of chlorine dioxide
(ClO2) is available from PureAire Monitoring Systems, Inc. A rugged,
battery-powered instrument, the Mini-BA Chlorine Dioxide Monitor is
ideal for safety monitoring at sites where fumigation and/or sterilization
work is being performed. The instrument is also suitable for portable
leak detection and temporary monitoring in laboratories, gas cylinder
receiving areas, and other locations where ClO2 may be present.
Available either low or high range measurements, the Mini-BA displays concentration data on a bright, easy-to-read front-panel LCD. It also features an adjustable concentration alarm with audio and visual indicators, renewable electrochemical sensor system, and 4-20ma output for use with recorders and other remote controllers. The instrument operates for up to 30 hours on its rechargeable Ni/Cad battery and can be run from standard line current using an optional AC adapter. The Mini-BA Chlorine Dioxide Monitor measures 1-1/2 x 5-1/16 x 5-1/4 inches (39 x 129 x 134 mm) and weighs just 11 ounces (0.3 kg).
System Helps Control Odors from Municipal Waste Treatment Facilities
A
highly effective, field-proven system for helping control hydrogen
sulfide (H2S) emissions from municipal waster water treatment plants
is now available from PureAire Monitoring Systems. Designed for use
in 100% condensing RH environments, the PureAire Chlorine Monitor responds
almost instantaneously to changes in chlorine concentration, making
it ideal for controlling the addition of H2S oxidizers such as sodium
hypo chloride in both mist-type and packed-bed scrubber systems. It
is available in four different measurement ranges: 0 to 1 ppm, 0 to
3 ppm, and 0 to 10 ppm.
The system operates on the principle that as long as Cl2 is present in the scrubber, any H2S entering the system will be oxidized. As the H2S load increases, the resulting decrease in residual chlorine levels is detected and a signal sent to a companion controller to increase the rate of chemical injection/addition. Conversely, when the H2S load subsides and the measured chlorine level increases, the controller decreases chemical injection/addition.
The PureAire Chlorine Monitor consists of a renewable, electrochemical sensor and companion transmitter, which may be linked to user-supplied programmable logic controller. The system has proven effective in helping eliminate H2S emissions and reduce chemical consumption in municipal waster treatment plants in Virginia, Florida, Arizona, and other states.
Gas Monitor Detects Fluorine Odors in Scrubbers, Exhaust Stacks, and Work Areas
An
extremely sensitive monitoring system for the detection and measurement
of fluorine (F2) is available from PureAire Monitoring Systems. Ideal
for monitoring scrubbers, exhaust stacks, process areas, and other
locations where fluorine may be present, the PureAire Fluorine Monitoring
System measures concentrations as low as 50 PPB, yet will not react
to hydrogen or alcohol-based cleaning solvents such as IPA. Moreover,
the system’s low-level measurement accuracy is unaffected by changes
in ambient temperature or humidity.
The system consists of a renewable, highly selective self-checking electrochemical sensor and companion transmitter linked to an optional control panel. It is available in many measurement ranges (0 to 1 ppm, 0 to 3 ppm, 0 to 9ppm and 0 to 30 ppm) and may be equipped with or without a local readout. For installation versatility, the signal from the transmitter may be routed directly to alarm, control, or facility-wide surveillance systems.
Chlorine Monitoring System Operates in 100% Condensing RH Environments
A
sensitive and specific monitoring system for the detection and measurement
of chlorine (Cl2) is now available from PureAire Monitoring Systems.
Designed to respond quickly to chlorine gas even in 100% condensing
RH environments, the PureAire Chlorine Monitor is ideal for outdoor
and indoor applications as well as installation in wet scrubber systems
and other processes. It is available in four different measurement
ranges: 0 to 0.3 ppm, 0 to 1 ppm, 0 to 3 ppm, and 0 to 10 ppm.
The system consists of a renewable, highly selective electrochemical sensor and companion transmitter linked to an optional control panel. The transmitter is available in a variety of configurations and may be equipped with or without a local readout. For installation versatility, the signal from the transmitter may be routed directly to alarm, control, or facility-wide surveillance systems.
Fenceline Monitor Detects Hydrogen Fluoride Releases
A
sensitive and specific fenceline monitoring system for the detection
and measurement of hydrogen fluoride (HF) is now available from PureAire
Monitoring Systems. Designed to respond quickly and accurately to hydrogen
fluoride leaks, the PureAire HF Monitor is ideal for perimeter monitoring
and other outdoor applications where wide variations environmental
conditions is common. The system is available with a measurement range
of either 0 to 9 ppm.
The electrochemical sensor used in the PureAire HF Monitoring System is specifically designed for outdoor applications, operating reliably in rain, snow, cold, and heat. It is unaffected by rapid changes in temperature or humidity and can even be used in 100% RH saturated environments. Moreover, the PureAire HF cell cannot be permanently damaged by high or exceptionally prolonged exposure to HF or other gases.
The PureAire HF Monitoring System consists of a renewable, highly selective electrochemical sensor and companion transmitter linked to an optional control panel. The transmitter is available in a variety of configurations and may be equipped with or without a local readout. For installation versatility, the signal from the transmitter may be routed directly to alarm, control, or facility-wide surveillance system
Intrinsically Safe Corrosive Gas Monitor
An
intrinsically safe monitoring system for the detection and measurement
of hydrogen chloride (HCl) hydrogen fluoride (HF), and other hazardous
gases is now available from PureAire Monitoring Systems. Designed specifically
for monitoring gases, which cannot be accurately monitored using standard
explosion-proof instruments, the PureAire TX-KXP Monitoring System’s
externally mounted safety barrier eliminates the need for flame arrestors,
which absorb common corrosive gases. The system is also available H2S,
HCN, SO2, as well as other toxic and corrosive gases.
Gas Monitoring System Detects PPM Levels of Methyl Bromide and Methyl Iodide
A
new gas monitoring system designed to detect and measure low levels
of methyl bromide and methyl iodide is available from PureAire Monitoring
Systems. Extremely sensitive and high specific, the PureAire Air Check
Advantage is capable of detecting parts-per-million concentrations
of gases traditionally monitored at LEL levels, such as methyl bromide
and methyl iodide. Moreover, its unique detection technique eliminates
interferences from other hydrocarbons, which may be present.
The PureAire Air Check Advantage Monitoring System detects and measures methyl bromide and methyl iodide in a range of 0 to 50 ppm. This low level, substance specific response is made possible through the use of a combined electrochemical detection technique which utilizes a long life pyrolyzer to decompose the target gas into one more easily and selectively detected by an electrochemical sensor. Measurement information is displayed on a local readout and output as a 4-20 mA analog signal. Also available are built-in user selectable dual alarm relays and local alarm indicators.
It operates on 24 VDC power and may be located up to 3200 feet from a centralized controller or PLC.
Explosion-Proof Monitor for Combustible Gases
An
explosion-proof monitoring system for the detection and measurement
of Methane, (CH4) hydrogen (H2), and other combustible gases is available
from PureAire Monitoring Systems. Designed specifically for use in
Class I, Division 1, Group B, C, and D hazardous areas, the PureAire
Air Check Ex Monitoring System is ideal for leak detection and surveillance
in chemical plants, refineries, and other locations where explosive
or flammable gases may be present.
Standard features on the PureAire Air Check Ex Monitoring System include digital display, optional dual level alarm relays and one-man remote calibration. For installation versatility, the signal from the Air Check Ex may be routed to either independent alarm, control, or surveillance systems or its own optional dedicated controller. Other gases detectable with the Air Check Ex include acetylene, gasoline, octane and hexane.
Continuous Oxygen Monitor Detects Leaks in Semiconductor Process Tool Transfer Stations
An
extremely low-maintenance oxygen (O2) monitor designed to continuously
monitor semiconductor process tool transfer stations and a load locks
for leaks is available from PureAire Monitoring Systems. Suitable for
use in vacuums as low as 10-3 torr, the PureAire Air Check O2 Monitor
is unaffected by fluctuations in pressure, temperature, or humidity.
The instrument displays oxygen concentrations on a local digital display
and outputs a corresponding analog signal.
The heart of the PureAire Air Check O2 Monitor is a long-lasting zirconium type sensor, which responds to low oxygen conditions within 5 seconds and provides accurate measurements even in areas subjected to high electro-magnetic fields. The sensor boasts a 5+ year operational life and requires absolutely no maintenance. The system’s operating temperature and humidity ranges are -40° to 122°F (-40° to 50°C) and 0 to 99% RH, respectively.
The Air Check O2 monitor may be linked to any distributed control system or programmable logic controller. It operates on 24 VDC power, measures 5.5 (W) x 10.5 (H) x 3.25 (D) inches (140 x 267 x 83 mm), and is housed in a NEMA 4X enclosure. Optional user-adjustable alarm relays are available.