Application Experts in Gas Detection and Solvent Vapor Monitoring Since 1969

From process to recovery, we can help you improve safety and performance

Control Instruments dedicates their expertise to the industrial and manufacturing communities. Our products are installed and used under the most demanding conditions, from oil pipelines in the Arctic to drilling wells in the desert. You will find our reliable, low-maintenance instruments in a variety of manufacturing industries, from printing and flexible packaging to semiconductor, pharmaceutical, and automobile manufacturing plants. We even supply systems that meet the strict requirements of military fighter jets and nuclear submarines. We pride ourselves in being the application experts in gas detection and solvent vapor monitoring, so you can count on us working hard to assess your risks and carefully tailor a management system to meet your specific application needs.  

Lower Energy Costs with PrevEx Flammability Analyzers

The cost of natural gas used for heating thermal oxidizers and other pollution control devices can be substantial. By using PrevEx Flammability Analyzers you can lower these costs and maximize process capacity, while complying with the necessary safety codes.

The National Fire Protection Association’s Standard for the Safe Operation of Ovens and Furnaces, defines direct-fired thermal oxidizers as Class A Furnaces mandating the use of continuous Flammability Analyzers on inlet streams exceeding 25% LFL. Measuring flammability at the inlet of the incinerator will prevent incinerator and oxidizer fires, explosions, or catalyst destruction by monitoring the flammability of the incoming VOC stream. These streams are of varying energy content that can change rapidly in a manner of minutes. Danger is present when the inlet stream suddenly gets rich enough to ignite or explode.

Our PrevEx Flammability Analyzers are used on the inlet duct to monitor the flammability of the incoming stream and protect it from dangerous concentrations caused by rich vapor streams. It is the only gas detection system that meets all the requirements of the NFPA.

Features & Benefits of the PrevEx Flammability Analyzer:

• One second response time
• Reduces ventilation air requirements
• Cannot  be poisoned or contaminated
• Heated to prevent sample condensation
• Stand-alone design with built-in alarms and relays
• Measures multiple solvents and mixtures without recalibration

 

Measure Emissions with Industrial Grade Flame Ionization Detectors

Our Flame Ionization Detector, model SNR650, was designed specifically for industrial use and is the only FID that mounts directly on the incinerator rather than in the instrument room or control room. This greatly improves response time and eliminates the expensive heat-traced sample lines required by other FIDs. For parts-per-million or mg/NM³ measurement of VOCs from oxidizer exhausts, stacks, adsorption beds, and process vents.

Government and environmental groups are forcing industries with medium to high VOC exhausts to reduce emissions by as much as 98%. Incineration is a way to bring the exhaust emissions in line with regulations. A flame ionization detector at the outlet of the incinerator ensures that it does not exceed emission levels. In addition, by using two flame ionization detectors (one on the incinerator’s input line and one on the output line) you can measure and compare hydrocarbon concentrations before and after processing, indicating efficiency.

Features & Benefits of Model SNR690 Flame Ionization Detector:

• Direct mount design eliminates heat-traced lines
• Heated to 200C to prevent sample condensation
• Stand-alone design with built-in alarms and relays
• Reliable air-aspirated sample-draw system does not use pump
• Automatic zero and span calibration
• Remote access and adjustment features

 

Model 690 BTU Calorific Analyzer optimizes burner efficiencies through measuring and controlling blended gas mixtures

These economical, fully-heated, air aspirator driven assemblies come complete and ready to install. They directly measure calorific value and have a highly uniform response to a wide variety of combustibles. Its industrial-strength design allows quick and reliable monitoring & control of waste gas streams to advanced combustion equipment such as a flare stack.

According to the EPA, in order to meet flare emission burning efficiencies of 98% the waste gas stream must have a net heating value of at least 200 BTU/ft³, depending upon the type pf flare system. If the minimum heat content of the waste gas stream is not met, auxiliary fuel must be introduced into the flare in sufficient quantity to make up the difference.

To do this, continuous monitoring of the waste stream is necessary to identify the energy content or calorific value, to determine whether it can be used as a standalone fuel supply or whether it needs to be blended with the constant fuel source such as natural gas. The Model 690 BTU Calorific Analyzer will accurately measure the direct BTU concentration of the waste stream and provide the alarm set point to alternate between the waste stream and the constant fuel source quickly for uninterrupted fuel.

Features & Benefits of Model 690 BTU Calorific Analyzer:

• Compact standalone system- integrated controller and sampling system
• Fast response time less than 4 seconds
• Failsafe system design
• Includes state-of-the-art electronics plus full complement of relays
• Class 1 Div 1 Flame Cell
• Advanced self-diagnostics
• Indoor and outdoor options