CR4000

GasmetTM CR-series includes quantitative multicomponent gas analyzers for laboratory research applications. The GasmetTM CR4000 incorporates a Fourier transform infrared, FTIR spectrometer, a temperature controlled sample cell, and signal processing electronics. Liquid nitrogen cooled MCT detector has the highest performance available.

The GasmetTM CR4000 is designed for highest sensitivity and speed. It is an ideal tool for example for emissions measurements, catalyst research applications, or to measure any compounds in wet corrosive gas mixtures. The longer path lengths of the sample cell provide low detection limits. The gold-coated sample cell can be heated up to 180 ºC.

CR-models scanning and analysis speed can be configured according to customers need. The following table tells the difference in between GasmetTM CR-models:

Gasmet CR-modelCell volume / LAbsorption path length options / cmSample cell materialResponse time, T90Applications
CR1000

0.003

0.013

0.031

1 (single-pass)

4 (single-pass)

10 (single-pass)

Stainless steel, ss 316 Typically < 2 s, depending on the gas flow and measurement time Percentage concentrations
CR2000 0.22

40 (multi-pass)

200 (multi-pass)

100 % rhodium coated aluminium Typically < 25 s, depending on the gas flow and measurement time Speed & reliability for wet corrosive gas mixtures
CR4000 0.4

250 (multi-pass)

500 (multi-pass)

980 (multi-pass)

100 % rhodium coated aluminium Typically < 120 s, depending on the gas flow and measurement time When highest sensitivity and speed are required

 

SYSTEM PARTS

  1. GasmetTM CR4000
  2. GasmetTM Industrial PC not included
  3. CalcmetTM PRO software for fast measurements
  4. Heated lines
  5. Particulate filtration required
  6. External pump required

KEY ADVANTAGES

  • Extremely fast
  • Extended wavenumber range 600–4200 cm-1
  • Low detection limits

AREAS OF APPLICATION

  • Engine emissions monitoring
  • Catalytic research
  • Gas purity applications
  • Other research applications where highest sensitivity is required

Technical Data

CR4000 FTIR Gas Analyzer

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: 5 - 30°C, non-condensing
Storage temperature: -20 - 60°C, non-condensing
Power supply: 100-115 or 230 V / 50 -60 Hz
Power consumption: 300 W

 

Spectrometer
Resolution:  Recommended 8 cm-1 or 4 cm-1
Scan frequency:  10 scans / s or faster
Detector:  Liquid N2 cooled MCT
Source:  SiC, 1550 K
Optics material:  ZnSe (beamsplitter and windows)
Wave number range:  600 - 4200 cm-1

 

Sample cell
Structure: Multi-pass, fixed path length 2.5 m
Material: 100 % rhodium coated aluminium
Mirrors: Fixed, protected gold coating
Volume: 0.4 liters
Connectors: Inlet Swagelok 6 mm
Outlet Swagelok 8 mm
Gaskets: Viton® O-rings
Temperature: 180 °C, maximum
Window material: ZnSe

 

Measuring parameters
Zero point calibration: 24 hours, calibration with nitrogen
(5.0 or higher N2 recommended)
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. Ambient pressure changes measured and compensated

 

Electrical connectors
Digital interface: 9-pole D-connector for RS-232
CR4000 is connected to an external computer via RS-232C cable. The external computer controls Gasmet.
Power connection: Standard plug CEE-22

 

Gas inlet and outlet conditions
Gas temperature: Non-condensing, the sample gas temperature should be the same as the sample cell temperature
Flow rate: 120 - 600 liters per hour
Gas filtration: Filtration of particulates (2 µm) required
Sample gas pressure: Ambient
Sample pump: External, not included

 

 Electronics
A/D converter: Dynamic range 95 dB
Signal processor: 32-bit floating point DSP
120 MFLOPS
Computer: External, not included

 

Analysis software (for external PC) 
Operating system:  Windows 7 (32-bit)
Analysis software:  Calcmet for Windows

 

Options
Sample cell:  Multi-pass, fixed path length 5.0 m or 9.8 m
Pressure measurement:  Inside sample cell
External PC:  Gasmet PC
Sample cell gaskets:  Teflon® coated Viton® or Kalrez®

 

Enclosure
Material: Aluminium
Dimensions (mm): 488 * 482 * 298
Weight: 18 kg
CE label: According to EMI guideline 89/336/EC

 


Gasmet Technologies Oy shall not be liable for technical or editorial errors or omissions contained herein. The information in this document is provided “as is” without warranty of any kind and is subject to change without notice. Should you find any errors, we would appreciate if you notified us.

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