Matte-black box; appearance master, not a manufacturing drawing.
Line A · Box-level extractive module
You already have the analyzer. Now you need a stable optical core that fits inside it.
You control the pump, sample path and system logic. Line A gives you a defined box-level TDLAS measurement node for that integration boundary; enclosure, gas conditioning and interface still need project confirmation.
Current Status: Current status: open for project assessment. The parameters below are engineering targets; final specifications must be confirmed for each project.
SPECVALTECH · ENGINEERING MEASUREMENTFit & Boundary
When does Line A fit your project?
Line A fits when:
- You are an R&D team building a new gas analyzer or industrial instrument.
- Your system actively pumps and conditions the gas sample.
- You want to integrate a defined optical core via RS232 / RS485 / 4–20 mA instead of developing the optical path yourself.
Line A is not the right form when:
- You want to measure gas directly inside a flowing pipe (Look at Line B instead).
- You need a ready-to-use, certified mine-safety device. Line A is an internal module, not a finished instrument.
- You don't want to deal with sample conditioning (The host system must provide a clean, pumped sample).
Engineering facts
What has to fit around your measurement point.
Pumped or conditioned sample path supplied by the host system.
Target configuration; confirm with the project electrical budget.
Combination depends on the host instrument interface.
Range and cross-interference conditions are configuration-specific.
Not an intrinsically safe mine module; see Line B for the pipeline route.
Target specification envelope
Before you use a number, check its condition.
These figures are the current engineering targets derived from the locked product model. They are not completed bench results, customer acceptance data or certification claims.
Condition / boundaryCommon baseline: 1 L/min · 25 °C · atmospheric pressure · N₂ background · warmed-up module.
| Metric | Target value | Condition / boundary |
|---|---|---|
| Standard configurations | TARGETCH₄ · CO₂ · CO · NH₃ | Other gases require project adaptation; range and cross-interference are configuration-specific. |
| CH₄ / CO₂ accuracy | TARGET0–500 ppm: ±10 ppm; 500–5000 ppm: ±2% of reading; 0–1.00 %vol: ±0.05 %vol; 1.00–100 %vol: ±3% of reading | 1 L/min · 25 °C · atmospheric pressure · N₂ background · warmed-up module. |
| CO accuracy | TARGET0–100 ppm: ±3 ppm or 0–500 ppm: ±10 ppm; high segment: ±2.5% of reading | Range is selected per configuration; test conditions must be stated. |
| NH₃ accuracy | TARGET0–10 ppm: ±0.5 ppm or 0–100 ppm: ±3% of reading | Gas-line material and heat management are part of the accuracy budget because NH₃ adsorbs. |
| Sample flow | TARGET1 L/min nominal | Common baseline for the target figures; host pump and conditioning remain outside the module. |
| Response | TARGETT90 ≤ 30 s | @ 1 L/min; gas path, cell exchange and algorithm window must be separated in a project test. |
| Operating temperature | TARGET0 to +45 °C | Target platform envelope. |
| Power / output | TARGETDC 12 V · steady-state ≤ 3 W · RS232 / RS485 / 4–20 mA | Output combination and electrical budget depend on the host instrument. |
| Protection / safety | TARGETIP40 · internal mounting · not intrinsically safe | For a coal-mine drainage pipeline, evaluate Line B rather than applying Line A parameters. |
A project specification should lock the gas, range, pressure, temperature, flow, background gas, warm-up state and evidence status before any value is treated as released.
SPECVALTECH · ENGINEERING MEASUREMENTThe Integration Boundary
What your team still owns after integrating Line A
A defined measurement core does not remove the need to design the sample line, pump, filter, condensate management, enclosure, software logic or host-instrument assessment. Those conditions remain part of your engineering brief.
FAQ
Questions about the product boundary
Is Line A an intrinsically safe mine module?
No. The DC 12 V and up to 3 W target are outside the intended intrinsic-safety envelope for the pipeline product. For a coal-mine drainage pipeline, evaluate Line B instead.
What sample flow is used for the target figures?
The current Line A target baseline uses 1 L/min, 25 °C, atmospheric pressure, nitrogen background and a warmed-up module. The project specification must preserve those conditions or define a new test.
Can Line A measure several gases at once?
A multi-gas configuration is a project question because each gas needs its own optical source, line selection, calibration and cross-interference review.
Engineering Blog
Choose Line A with the gas path already defined.
Specvaltech · Engineering measurement
Have a measurement point to evaluate?
Send the conditions you have. Unknown fields are acceptable; we will identify which inputs affect the next decision.