The KF200 Series Laser Gas Analyzer is developed aiming at
industrial on-line analyzing and online environmental monitoring.
Based on the semiconductor laser absorption spectroscopy(DLAS)
technology, it is deceloped with features of an integrated design
and high level of integration.
With various types of the KF200 series laser gas analyzer,
including in-situ probing type, by-pass type, multi-channel and
disc-mounted type etc., gas like O2,CO,NH3,CO2,CH4,H2O,HC,HF etc.,
can all be analyzed. The concentration analyzing of target gases
includes the macro-analysis and micro-analysis.
>>> Technical Principle
Modulate laser(tunable)wavelength by using the current and
temperature to scan the specific absorption peak of the measured
gas(no background gas absorption), and then get the second harmonic
of the gas absorption. By using the second harmonic information and
the broadening of the gas, the concentration of the gas can be
calculated.
>>> Technical Characteristics
· The TDLAS technology is adopted for in-situ online gas analyzing;
· Double-proof probe design negates positive pressure purge, with no
additional data processing unit, a simple compact structure and
high reliability.
· Using high-power lasers, no fibre coupling, suitable for harsh
working conditions(such as excessive dust);
· Using the patented technology of spot light path adjustment, easy
for on-site installation.
>>> Technical Specifications
| Technical Data | linearity error | ≤ ±1%F.S. |
| Span drift | ≤ ±1%F.S./6 months |
| Repeatability | ≤1% |
| Calibration period | ≤1 time/6 month |
| Explosion-proof Grade | Ex d IIC T6 |
| Protection levels | IP66 |
| Response Time | Warming-up time | ≤15 min |
| Response time(T90) | ≤1s |
| Interface Signals | Analog outputs | 2-wire 4-20 mA signal input(Isolated, max. load 750) |
| Relay output | 3-wire relay(24V,1A) |
| Digital Communication | RS485/RS232/GPRS |
| Analog inputs | 2-way 4-20 mA input(temperature-pressure compensation) |
| Laser Safety Standard | GB 7247.1-2001(idt IEC 60825-1:1993) |
| Operating Conditions | Storage temperature | -30℃ ~ +60℃ |
| Ambient temperature | -40℃ ~ +80℃ |
| EMC | IEC 6100-4-2, IEC 6100-4-3,IEC 6100-4-4, IEC 6100-4-5, IEC 6100-4-11 |
| Gas jet | 0.3-0.8 Mpa Industrial nitrogen inlet and purification instrument
gases etc. |
| Consumption | <20 W |
| Power | 24V DC(18-36 V DC),220V AC |
>>> Gas Detection Limit
| Detection Gas Type | Detection Limit | Detection Range |
| O2 | 0.01% Vol | (0-1)%Vol., (0-100)%Vol. |
| CO2 | 10 ppm | (0-1000)ppm,(0-100)%Vol. |
| H2S | 20 ppm | (0-2000) ppm, (0-100)%Vol. |
| HCI | 0.1 ppm | (0-50) ppm,(0-100)%Vol. |
| NH3 | 0.1 ppm | (0-10) ppm, (0-100)%Vol. |
| C2H2 | 0.1 ppm | (0-10) ppm, (0-100)%Vol. |
| CO | 10 ppm | (0-1000)ppm, (0-100)%Vol. |
| H2O | 0.3 ppm | (0-50)ppm, (0-100)%Vol. |
| HF | 0.02 ppm | (0-5)ppm, (0-10000) ppm |
| HCN | 0.3 ppm | (0-30)ppm, (0-1)%Vol. |
| CH4 | 0.4 ppm | (0-40)ppm, (0-100)%Vol. |
| C2H4 | 0.6 ppm | (0-60)ppm, (0-100)%Vol. |
Note 1:
The data are measured under the test conditions of 1 m optical
path, 1 bar gas pressure, and 300K gas temperature.
Note 2:
Increasing the optical path will proportionally lower detection
limit.
