Tunable Laser Gas Analyzer TX-100

TX-100 is HORIBA’s in-situ laser-based HCl analyzer with a probe type optical system. The TX-100 is suitable for monitoring HCl concentrations in incineration plant flue gas streams and for the control of HCl removal processes.

Segment: Process And Environment
Division: Combustion
Base product
Manufacturing Company: HORIBA Ltd.

Probe type optical system

  • Both laser and receiver are installed at the same side of the stack

  • Just one flange installation is sufficient for the setup

  • Easy replacement to an existing analyzer with no additional work

  • The stabilized optical axis provides excellent performance

  • Continuous moisture correction function supports high accuracy measurement


HORIBA’s original calibration mechanism

TX-100 implements calibration without any disruption to the facility’s operations. The zero point can be checked automatically and the signals are kept in stable condition over long term
(US patent No. 8934101; China patent No. ZL201280039440.7; patent applied for Japan, Europe)


<Measurement> Zero point checking and measurement are conducted alternately

Zero point checking mode
Zero point checking is carried out while the prism is inserted into the optical path at fixed intervals.


Measurement mode
In measurement mode, the prism moves upward and leaves the optical path


<Calibration> Calibration is conducted after span gas is filled in the calibration cell
Gas calibration is completed leaving the probe attached in the stack. 


Data management for the TX-100 can be selected from various components; Analyzer’s display, HMI (Human Machine Interface) unit, or from PC-HMI software

Analysis unit display
Basic display to confirm and control information such as equipment status, gas status and comunication status. 


HMI unit (option)
A touch panel screen that can set and confirm concentration, transmittance, trend graph, maintenance info, alarm status, etc.


PC-HMI (software)
PC-HMI is a software that includes almost the same function as the software instaled in HMI unit.  Install this software in a PC or other devices to operate. Ethernet is available for data transmission between PC and TX-100.  
Free download available from our website. 

NameTunable Laser Gas Analyzer
Measurement targetHCl and H2O in process gas
Measurement componentHCl, or HCl and H2O simultaneous measurement
Measurement principle

Non Dispersive Infrared (NDIR)

Measurement typeProbe type
Laser classCLASS1(IEC60825-1: 2014)
Protection degreeIP65
Wetted materialsSUS316L、SUS304、BK7、FKM、PTFE、aluminum alloy
Tube connectionsRc1/8 (Tube of 8 mm O.D./6 mm I.D.)
External dimentions

Analyzer: Max: 358 (W) x 517 (D) x 453 (H) mm
Flange diameter (Max.):  Φ235 mm、 Length: 1500 mm
Probe diameter: Φ 89 mm


Analyzer: 19 kg
Probe: 20 kg

Flange specificationsJIS10K-100AFF、JIS5K-125AFF、ANSI 150 Lb 4BRF
Power supply voltageDC24V±10%
Power consumption90 W
DisplayLCD (128 × 64 dots), LED (3 units: Status display)
Display contentsGas concentration, transmission, process gas temperature, process gas pressure, system status, alarm information, system information (product serial no., output signal, IP address, optical path length, analyzer unit internal temperature)
Analog input/output

Two channels (Process gas temperature, process gas pressure)
4 to 20 mA (isolated input)

Two channels (Process gas concentration*, transmission, process gas temperature, process gas pressure)
4 to 20 mA (isolated output) Max. load: 550 Ω

Digital input/output

One channel (External alarm) 
Non-voltage digital input (isolated input) 
Input open signal: 100 kΩ or more 
Input close signal: 200 Ω or less

Two channels (Warning/Calibration/Warm-up/Maintenance state/Fault)
Relay contact output (isolated output) Max. 24 V, 1 A at each terminal

*You can select either fixed value or real time HCl correction using H2O concentration.
-Modbus is a trademark of Schneider Electric Inc.
-Consult HORIBA if special probe length is required.



Measurement component

HCl, H2O

Measurement range (250℃、101.3kPa)

HCl: 0-50,100,200,300,400,500 ppm*1

H2O: 0-50 vol%

Measured optical path length2m

HCl: +/- 1.0% F.S.

H2O: +/- 2.0% F.S.


HCl: +/- 1.0% F.S.

H2O: +/- 2.0% F.S.

Zero drift

+/- 2.0% F.S. / 6 months

Span drift+/- 2.0% F.S. / 6 months
Data update cycleApprox. 2sec
Recommended Calibration cycle6 months
Calibration methodHCl: Manual calibration using gas cell
H2O: Factory calibration*2

+/- 2.0% F.S.
Gas conditions (at standard process gas condition range)

Warm-up time3hours

*1: Select a measurement range.
*2: You can adjust the H2O indicated value to the manual analysis value. Consult HORIBA for more details. 



Usage Conditions

Ambient temperature-20 ~ 55°C (no direct sun rays, radiant heat and heat conduction from flange)
Ambient humidityRelative humidity: 90% or less (no condensation)
DustAmbient criterion or less
Air purge

Instrument air (must not contain oil or mist; no dew formation)
Pressure: 0.2 to 0.25 MPa*

Air purge flow rate

60 L/min or more (depend on the process gas conditions)

VibrationAt 1 to 200 Hz, 1.96 m/s2 or less (excluding resonant frequency)
Process gas conditions

Temperature: 150 to 250°C

Pressure: 101.3 ± 10 kPa

Flow speed: 25m/s

Dust: 0.1mg/Nm3 or less

* This value is supplied pressure to TX-100 main unit.  In case air passes through the purge unit, the pressure value at the purge unit is 0.2 to 0.9 MPa.

Solid Waste Combustors and Incinerators in Solid Waste Management and Remediation Services
Solid Waste Combustors and Incinerators in Solid Waste Management and Remediation Services
TX-100 Brochure English
Size 1.33 MB
TX-100 Software
Size 7.24 MB


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