The Portable FTIR Gas Analyzer
The Gasmet DX4040 analyzer combines Fourier transform infrared (FTIR) spectrometer, rhodium-gold coated sample cell, built-in sample gas pump and signal processing electronics in a compact unit.
In battery use, operating time is 2.5 hours with one charge. AC power supply is also included. There is a filter for particulates inside the probe and no sample preparation is needed. The lightweight analyzer can be used with or without the durable Teflon coated backpack.
The Gasmet DX4040 is designed for on-site measurements of different compounds (both organic & inorganic) at low concentrations in ambient air. Typical usage areas include industrial hygiene and emergency response situations. The communication between the analyzer module and the PDA is wireless (with Bluetooth protocol).
In the standard configuration, concentrations of 25 gases of interest can be simultaneously monitored.
Furthermore, with the optional Calcmet 4040 Professional software the analyzer can be connected to a laptop PC for extended analysis capability (e.g. identification of unknown compounds with library spectra).
There are no consumable parts that would need replacing on regular basis. In addition, due to FTIR technology, the calibrations remain very stable. Hence no span calibrations are needed. Also, cross-interferences (i.e. interference from other gases) are automatically compensated in the analysis algorithm during the calculation of the results.
To sum up, the Gasmet DX4040 provides a very cost-effective, easy-to- use solution for multi-component gas analysis in ambient air.
General parameters
Measuring principle:
Fourier transform infrared, FTIR
Performance:
Simultaneous analysis of up to 25 gas compounds (PDA), 50 gas compounds with optional Calcmet software
Response time, T90:
Typically < 120 s, depending on the gas flow and measurement time
Operating temperature:
Ambient temperature Short term 0 – 40 °C Long term 5 – 30 °C Non-condensing
Storage temperature:
10 – 35 °C, non condensing
Shipping temperature:
-20 – 45 °C during 12 hours, noncondensing
Power supply:
115 / 230 VAC
Battery functioning time:
Approximately 2.5 hour operation time with Bluetooth ON(dependant of ambient temperature).
Spectrometer
Resolution:
8 cm-1
Scan frequency:
10 scans / s
Detector:
Peltier cooled MCT
Source:
SiC, 1550 K
Beamsplitter:
ZnSe
Window material:
ZnSe
Wave number range:
900 - 4 200 cm-1
Sample cell
Structure:
Multi-pass, fixed path length 9.8 m
Material:
100 % rhodium coated aluminum
Mirrors:
Fixed, protected gold coating
Volume:
0.4 liters
Temperature:
Ambient
Measuring parameters
Zero point calibration:
24 hours
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 10K temperature change
Pressure influence:
1 % change of measuring value for 1 % sample pressure change.
Ambient pressure changes measured and compensated.
Electrical connectors
Digital Interface:
Bluetooth protocol & RS-232 The analyzer is connected to a PDA with Bluetooth connection
(RS-232 optional). The PDA provides the analysis results.
Option:
sample spectra transfer to laptop (PC) for additional analytical capabilities Gas inlet and outlet conditions
Gas temperature:
Ambient temperature (0 – 50 oC),non-condensing
Gas filtration:
Filtration of particulates included in the sample probe
Sample gas pressure:
Ambient
Sample pump:
Flow ~1.5 l/min, for ambient air only
Electronics
A/D converter:
Dynamic range 95 dB
Signal processor:
32-bit floating point DSP Analysis software (PDA)
Operating system:
Windows Mobile 6.1 Professional
Analysis software:
Calcmet Lite
Options
Software: Calcmet software with DX40XX Pro key. Laptop PC + Windows XP required. For more information read Calcmet Technical data.
Additional information
Enclosure:
Polyurethane
Weight:
13.8 kg (with battery) 12.4 kg (without battery)
CE label:
According to EMI guideline 89/336/EC
商品属性 [波长范围] 900 - 4 200 cm-1 [光学分辨率] 8cm-1