LDS 6 and SITRANS SL gas analyzers — laser diode spectrometers. The devices are used for “In-Situ” determination of concentration in gases. Their operating principle is based on absorption spectroscopy in long wavelength infrared region where diode laser, applied as a source of light, correlates with the absorption spectral lines of the measured gas. Laser is in the central processor.
Lase beam paths though the light conductor to the measuring point (up to 1000 m), reverse transfer of optical signal processed by the central processor is carried out the same way. By means of a remote connection several sensors (measuring points) for the same gas can be controlled by one central processor.
LDS 6 laser gas analyzers are designed for volume ratio measurements of oxygen, hydrogen fluoride, chlorine hydride, ammonia, carbon oxide, carbon dioxide, water vapor. Gas analyzers have indicating temperature channel of the analyzed media.
LDS 6 gas analyzers application areas: industrial emission control and process control.
LDS 6 gas analyzers are stationary continuous operation devices.
Measurement principle: spectral analysis of single-line molecular absorption. Diode laser emits light in near-infrared spectrum coming through the analyzed media and detected by receiver module. Laser beam wave length is adjusted as per the characteristic absorption line of the analyte.
Gas analyzer has several blocks:
– central module (standard casing designed for installation into 19 in. rack);
– sensors (up to 3 transmitter/receiver pairs).
The front panel of gas analyzer has the following modules:
– LCD display with measurement results, measurement range and gas analyzer status line;
– control keys.
Transmitter/receiver pairs are installed transversally to the pipe with analyzed media. Sensors are connected with central module through a hybrid cable with electrical conductors and fiber optic line.
LDS 6 gas analyzer has 1 analog output (4-20) mA for each analyte and 6 configurable relay outputs and inputs to the channel, as well as the possibility to transfer and receive data through Ethernet (Ethernet lOBaseT (RJ-45)).
Protection level in accordance to GOST 14254-96:
– gas analyzer casing — IP20;
– transducer without explosion protection (CD 6) — IP 67;
– transducer with explosion protection (CD 3002) — IP 65.
Gas analyzer transducer with explosion protection (CD 3002) has 0ExiaIICT4 explosion protection marking and 3040-3055 – [Exia]IIC barrier type.
Central module of gas analyzer is made per general purpose industry standards and shall be located outside explosion hazardous zones.
SITRANS SL — industrial gas analyzer for selective measurement of О2, LDS 6 — selective measurement of such elements as О2, NH3, HCI, HF, H2О, CO, CО2, etc.
