As the first company in the world, Gasmet Technologies introduces an In Situ FTIR gas analyser for stack emissions monitoring. The In Situ analyser consists of a sample cell inserted into the stack or duct, heated steel mounting flange and a rugged interferometer unit in an IP65 enclosure that is directly attached to the flange.
The Gasmet In Situ analyser offers a cost-effective alternative for extractive systems in continuous emissions monitoring applications where multiple components are monitored. By combining powerful FTIR technology with rugged in-stack measurement cell, the Gasmet In Situ offers increased analytical capability and reduced cross interference effects when compared with other in-situ analysers.
The Gasmet™ In-Situ analyser consists of a sample cell inserted into the stack or duct, heated steel mounting flange and the rugged GICCOR™ interferometer unit in an IP65 enclosure that is directly attached to the flange. Gasmet™ In-Situ can generate direct 4-20 mA outputs for the measurement results, or alternatively it can be connected to an external PC for further data analysis and logging features.
The Gasmet™ In-Situ offers a cost-effective alternative for extractive systems in continuous emissions & process monitoring where multiple compounds are monitored. Typically, concentrations of H2O, CO2, CO, NO, NO2, N2O, SO2, HCl, HF, NH3, CH4 are continuously monitored with a single Gasmet™ In-Situ. In addition, different VOC’s can be measured as individual compounds. There is no need to do any span calibrations; just daily zero calibration with dry instrument air.
By combining powerful FTIR technology with rugged in-stack measurement cell, the Gasmet™ In-Situ offers increased analytical capability and reduced cross-interference effects when compared with other in-situ analysers.
In-Situ Multicomponent FTIR Gas Analyser
GASMET FTIR In-Situ SERIES includes industrial multicomponent gas analysers for continuous monitoring applications. The GASMET In-Situ 5.0 incorporates a Fourier Transform Infrared spectrometer, a sample cell which is directly inserted into the sample gas flow, and signal processing electronics. The analyser is fully equipped for fixed installations and it offers versatility and high performance for a wide range of applications. Standard In-Situ 5.0 analyzer includes analog outputs 4-20 mA for measuring data and relay contacts for alarms. As an option the In-Situ analyser can be equipped with an external computer unit. In this case the In-Situ employs the same Calcmet user interface as an extractive GASMET CEMS. The sample must be non-condensing and the upper limit for sample temperature is 250 oC. Sample cell absorption path length is 5.0 meters. Insertion depth of the sample probe is
590 mm and the flange diameter is 240 mm.
General parameters
Measuring principle: Fourier Transform Infrared, FTIR
Performance: simultaneous analysis of up to 50 gas compounds
Response time, T90: typically < 120 s, depending on the gas flow and measurement time
Operating temperature: -30 – 40 °C non condensing
Storage temperature: -30 – 60 °C, non condensing
Power supply: 100-115 or 230 V / 50 -60 Hz
Power consumption: 500 W max.
Instrument air: Dew point –20 oC, oil free
Max. air consumption:
120 l/min for vortex cooling (cont.)
100 l/min for zero calibration/purge
(15 minutes at 24 hour intervals)
Spectrometer
Resolution: 8 cm-1
Scan frequency: 10 scans / s
Detector: Peltier cooled MCT
Source: SiC, 1550 K
Beamsplitter: ZnSe
Window material: ZnSe
Wavenumber range: 900 - 4 200 cm-1
Sample Cell
Structure: Multi-pass, fixed path length 6.0 m
Probe body material: AISI 316 steel
Mirror material: Rhodium coated aluminium
Mirror coating: Reflective gold coating
Gaskets: Viton® O-rings
Window material: BaF2
Insertion depth 589 mm
Mounting flange 240 mm diameter
Measuring parameters
Zero point calibration: 24 hours, calibration with instrument air
Zero point drift: < 2 % of measuring range per zero point calibration interval
Sensitivity drift: none
Linearity deviation: < 2 % of measuring range
Temperature drifts: < 2 % of measuring range per 10 K temperature change
Pressure influence: 1 % change of measuring value for 1 % sample pressure change. Sample pressure changes are measured and compensated
Sample Gas Conditions
Gas temperature: Up to 250 oC, non condensing
Electrical Connectors
A/D Converter: Dynamic range 95 dB
Signal Processor: 2 32-bit floating point DSP’s 120 MFLOPS
Digital Interface: Bayonet locking 10-pole circular connector (MIL-C-5015) for serial and relay output.
Measuring data: 4-20 mA, max 8-channel
Alarm Relays: Function, alarm, service relays
Power connection: Terminal connectors for L + N + PE wires
Optional Computer Unit
Analyzer is connected to an external computer via serial cable. The external computer controls the GASMET In-Situ analyzer
Minimum Configuration: 512 MB Memory, > 40 GB hard disk, > 2.4 GHz Intel Pentium IV Processor, Modem, Network card
Operating system: Windows Xp operating system
Software included: Calcmet for Windows
Watchdog support: Included
Relay contacts (status): Function Fault
Service required
Sampling Alarm
Relay contacts (valves): Sample gas
Zero gas
Span gas 1
Mouse: Included
Keyboard: Not Included
Display: TFT display
Digital Interface RS-232 cable to analyzer, max
10m
Remote control: Built-in modem/network card and
PC Anywhere support
Options
Adapters for flanges larger than 240 mm
RS-422/485 interface instead of RS-232 for longer distance,
max 1 km.
Enclosure
Material: Aluminium / Steel /
Polyethylethylketone (PEEK)
Dimensions (mm): 1018 x 390 x 250
Weight: 30 kg
CE - Label: According to EMI guideline
89/336/EC