ZS8600-MG Multi-Pass TDLAS Multi-Gas Analyzer
Multi-pass 5 m optical path for configured TDLAS gas channels
- Principle
- Multi-pass TDLAS
- Optical Path
- 5 m
- Resolution
- 0.01 ppm
- Channels
- Project-configured
Overview
The ZS8600-MG uses a 5 m multi-pass optical path for configured TDLAS gas channels. It is available for the brochure gas set: NH3, HF, HCl, CH4, CO2, CO, O2, H2O, C2H2 and H2S, with channel selection confirmed by the application matrix.
- Multi-pass 5 m optical path
- Configured TDLAS gas channels
- 0.01 ppm resolution per brochure
- Compact 950H x 560L x 300W analyzer body
- 40 kg platform weight
Full Technical Specifications
Key Performance
| Metric | Value | Status |
|---|---|---|
| Principle | Multi-pass TDLAS | confirmed |
| Optical Path | 5 m | confirmed |
| Resolution | 0.01 ppm | confirmed |
| Accuracy | Configured per application (datasheet pending) | project-configured |
| Response | Configured per application (datasheet pending) | project-configured |
| Gas Channels | NH3, HF, HCl, CH4, CO2, CO, O2, H2O, C2H2, H2S (configured) | confirmed |
Measurement
| Specification | Value |
|---|---|
| Principle | Multi-pass TDLAS (multi-fold long optical path) |
| Optical Path Length | 5 m |
| Gas Channels | NH₃, HF, HCl, CH₄, CO₂, CO, O₂, H₂O, C₂H₂, H₂S (configured) |
| Resolution | 0.01 ppm |
| Accuracy | Configured per application (datasheet pending) |
| Response T90 | Configured per application (datasheet pending) |
| Other Parameters | Other main parameters similar to ZS8100 platform |
Physical
| Specification | Value |
|---|---|
| Dimensions | 950H × 560L × 300W mm |
| Weight | 40 kg |
| Housing | Powder-coated steel with vibration-isolated optics |
| Optical Path | Multi-pass (multi-fold) 5 m |
Electrical
| Specification | Value |
|---|---|
| Power | 100–240 VAC 50/60 Hz, 200 W |
| Analog Output | 4 × 4–20 mA isolated |
| Digital | Modbus TCP, OPC-UA, MQTT, Ethernet/IP |
| Display | 10″ industrial touchscreen |
| Storage | Internal SSD 500 GB |
Environmental
| Specification | Value |
|---|---|
| Operating Temp | +5 °C to +45 °C |
| Humidity | 0–85 % RH non-condensing |
| Sample Temp | Up to 180 °C (heated cell) |
| Sample Pressure | −50 to +500 mbar |
| N₂ Purge | Optional for low-ppm applications |
Certifications
| Specification | Value |
|---|---|
| EMC | EN 61326-1 |
| Safety | EN 61010-1 |
| Connectivity | OPC-UA, MQTT, Modbus TCP interfaces |
| Quality | ISO 9001:2015 |
Where This Analyzer Fits
This model is mapped to the following industry applications and process duties.
Deployment Environments
Common process environments where this model is evaluated.
Certification Scope
Standards are listed with scope and status so engineering review can verify the applicable enclosure, area, and safety case.
| Standard | Scope | Variant | Status | Document |
|---|---|---|---|---|
| CE / UKCA | Approvals listed in certification detail | Project variant | approved | On request |
| EN 61010-1 | Safety standard listed in specifications and certification detail | Project variant | approved | On request |
| EN 61326-1 | EMC standard listed in specifications and certification detail | Project variant | approved | On request |
| OPC-UA certified | Connectivity standard listed in specifications and certification detail | Project variant | approved | On request |
Request Documentation
Request technical datasheets, user manuals, certificates, and application notes for this model.
Evidence Notes
Multi-pass TDLAS multi-gas architecture for refinery and petrochemical gas streams
The scenario uses one multi-pass TDLAS platform with configured gas channels for several refinery gas components that would otherwise require separate analyzer paths. The engineering case is channel consolidation, shared sample handling, and matrix-reviewed channel selection rather than a promised reduction in footprint or calibration effort.
Technical & Engineering Details
Secondary engineering detail — expand each topic for the full measurement, envelope, sample-system, calibration, integration, maintenance and application evidence.
01 Measurement Principle and Limits
How the measurement is bounded
Multi-pass TDLAS folds the optical beam to a 5 m path and scans each configured gas channel on a narrow absorption line; narrow TDLAS line selection reduces cross-interference; final channel set is matrix-reviewed.
Rejects
- Gas components not covered by the configured TDLAS channel set
- Condensing sample without heated cell or conditioning review
- Field component changes without channel validation
Requires
- Channel list and TDLAS line selection confirmed for the target gas matrix
- Heated cell or sample conditioning selected according to moisture and condensation risk
- Vibration-isolated optics and stable purge / sample handling for low-ppm applications
- Channel-by-channel calibration and interference review before adding field components
Interferents and Limits
- H2O has broad infrared absorption and can affect TDLAS channels if the line selection and conditioning are not matched to the matrix
- CO2, hydrocarbons, NH3, and H2O can share spectral regions and require channel line-selection review
- Low-ppm duty may require N2 purge and tighter sample handling
02 Operating Envelope
Use these limits as selection inputs, then confirm sample condition, ambient exposure, and materials before quotation.
- Condensing sample without heated cell or conditioning review
- Unvalidated field addition of gas components
- Low-ppm duty without purge and matrix review
03 Sample System Boundary
Sampling mode, conditioning components, and exclusions define where the analyzer responsibility ends and the sample system begins.
- multi-pass TDLAS measurement cell
- configured TDLAS channel set
- ZS-SCS-800 heated sampling system or ZS-SCS-600 cool-dry system as selected by moisture duty
- optional N2 purge for low-ppm applications
- No universal sample-conditioning path is declared; sample handling depends on moisture and target components
04 Calibration & Validation site-specific
Calibration method, interval, traceability, and audit support are shown only when structured data is available.
Zero / Span Method
Channel calibration and TDLAS line verification are channel-specific; calibration workflow is configured per project (datasheet pending)
Interval
Not stated in the current published specification; FAQ references extended intervals as architecture context only
05 I/O & Integration
Signal outputs and communication interfaces shown from the published specification fields on this product page.
Analog Output
4 × 4–20 mA isolated
Digital
Modbus TCP, OPC-UA, MQTT, Ethernet/IP
Display
10″ industrial touchscreen
Storage
Internal SSD 500 GB
DAHS Review Note
Confirm protocol map, channel naming, alarm states, and reporting format during project integration review.
06 Maintenance & Spares site-specific
Tasks, consumables, and access items are shown only when structured maintenance data is available.
- Verify the configured channel list and TDLAS line selection after process-matrix changes
- Inspect heated cell and optical path according to sample moisture and particulate loading
- Review N2 purge supply for low-ppm applications
- Confirm OPC-UA / MQTT / Modbus TCP data mapping after channel changes
- Optical-path service parts
- sample-line filter or conditioning parts
- calibration gases per configured channel
07 Application Evidence
Application context from complex industrial environments.
Application Context
Ethylene crackers needing monitoring of several gas components (such as CO, CO₂, CH₄, H₂O, NH₃) traditionally instrument multiple separate analyzers, consuming rack space and creating multiple independent calibration cycles.
Architecture Response
A single ZS8600-MG consolidates these components onto one multi-pass TDLAS platform with configured gas channels, so cracker-side instrumentation footprint and calibration overhead both shrink to a single platform.
Frequently Asked Questions
How does the ZS8600-MG measure multiple gases?
It uses multi-pass TDLAS: the beam is folded to a 5 m optical path and each configured gas channel is scanned on its own narrow absorption line. Narrow TDLAS line selection reduces cross-interference; the final channel set is matrix-reviewed for the target gas mix.
What optical path does the analyzer use?
The ZS8600-MG uses a multi-pass (multi-fold) cell that folds the beam to a 5 m optical path, supporting a brochure resolution of 0.01 ppm. Other main parameters are similar to the ZS8100 platform; range, accuracy and response are configured per application (datasheet pending).
Which gases can the ZS8600-MG be configured for?
The brochure gas set is NH3, HF, HCl, CH4, CO2, CO, O2, H2O, C2H2 and H2S. The active TDLAS channel set is selected and confirmed against the application matrix for each project; channel changes are validated channel-by-channel.
How is cross-interference handled?
Narrow TDLAS line selection reduces cross-interference by targeting an isolated absorption line for each gas. Where components share spectral regions, the final channel set is matrix-reviewed and verified channel-by-channel during commissioning.
Does it support Industry 4.0 integration?
Yes, native OPC-UA, MQTT, and Modbus TCP interfaces. Direct integration with plant historians, SCADA, MES, and digital twin platforms without middleware.
What sample conditioning is required?
For process gas, use the ZS-SCS-600 Cool-Dry System or ZS-SCS-800 Heated System depending on moisture content. The optional heated 180 °C sample cell allows hot-wet measurement without sample conditioning for some applications.
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View ProductsCompare ZS8600-MG with adjacent options
Review neighboring models by technology, range, accuracy basis, and form factor before moving to quotation.
When this model is preferred
Select ZS8600-MG when its measurement principle, range, and form factor match the process duty and certification scope.
When to consider an alternative technology
Consider another analyzer when the gas matrix, sample temperature, hazardous-area scope, or reporting requirement falls outside the stated envelope.
Review ZS8600-MG against site conditions
Send gas range, sample temperature, pressure, moisture, and certification needs before final model selection.