TruePeak tunable diode laser (TDL)
The TruePeak analyser operates by measuring the amount of a laser light that is absorbed as it travels through the gas being measured. Involving no sensor contact with the process and no moving parts, it leads to a high MTBF and hence a low cost of ownership. It offers a range of flexible installation options, and features on-board diagnostics. Using a tunable diode laser as a monochromatic light source offers the benefits of sensitivity, selectivity to resolve single absorption lines, and power – to overcome the effects of optically thick environments with high particulate loading. The new instrument is one of the most robust process analysers available. In addition to operating in conditions of high temperature or pressure, it can be used under difficult conditions including environments involving corrosive, aggressive and high particulate content materials.Read more >>>
In Situ Analysis
Measures O2, moisture, CO, NH3, CH and HCN
Interference Free for most applications
TruePeak Measurement Capable of measuring under changing pressure,
Process Pressures up to 20 Bar
Optical Measurement, no sensor contact with process
Low LTCO (no moving parts, high MTBF for components)
On Board Diagnostics
ATEX Group II for zone 1 (Cat 2G) or 2 (Cat 3G) with purge systems
The TruePeak TDL analyser forms a complementary solution to Yokogawa’s ZR Zirconia oxygen analyser, and measures oxygen (O2) and pressures as high as 20 bar absolute. Measurement span is typically between 1% and 100% oxygen.
Carbon monoxide (CO), from low ppm detection limits to percentage levels
and carbon dioxide (CO2) can also be measured at process temperatures of up to 1500°C. Subject to application we can also offer HCl, NH3, HCN, CH4 and multipoint measurements such as CO2, H2O and CH4 for combustions processes.
The analyser can also be used for measuring parts per million moisture content in corrosive and aggressive process streams including chlorine and hydrocarbons.
The ability of the new instrument to carry out accurate online process measurements makes it ideally suited to applications such as combustion control, where it can be used to optimise the combustion process by measuring excess oxygen and carbon monoxide on a precise and continuous basis. It also allows carbon monoxide to be accurately measured on a continuous basis at low ppm levels so that air fuel ratios can be precisely and continually optimised.
Other potential applications include the monitoring of carbon monoxide, methane and moisture to enable burner flame-out and process tube leaks to be identified; the measurement of oxygen on flare lines, alkylation units and gas plants; the monitoring of carbon monoxide and oxygen on fluid catalytic cracking units for safety and catalyst regeneration; or the detection of low ppm concentrations of water in hydrocarbons in catalytic reforming processes.
The TruePeak analyser is a compact stand-alone unit with a built-in 4´20 vacuum fluorescent display for scrolling information and a 7-inch colour screen with keypad. The instrument offers a range of interfaces including Ethernet, USB and wired or wireless PDA communication for safe or hazardous areas. The instrument includes three configurable 4-20 mA outputs, two 4-20 mA in case of temperature and pressure compensation, and relay outputs including warning/fault relays and valve control.
The analyser is CE marked and ATEX approved for Zone 1 or 2 installations with purge system.
The new TruePeak tunable diode laser (TDL) analyser is manufactured by Analytical Specialties Inc, and has been tested in harsh conditions by Dow Chemicals.