Do not merge the three pressure questions
| Question | What it means | What evidence is needed |
|---|---|---|
| Mechanical pressure resistance | What pressure the body, window, fitting and seal can withstand without unacceptable deformation or leakage. | Controlled mechanical design, materials, seals, test method and project drawing. |
| Measurement compensation range | Where the algorithm or calibration model is intended to compensate the pressure effect on the reading. | Gas, temperature, pressure, flow, calibration and error results over the stated range. |
| Actual installation pressure | What the measurement node sees at the real point, including pump and network behaviour. | Absolute pressure, flow direction, operating state and measurement location. |
What to record before selecting Line B
- Where is the measurement point relative to the pump and the main network?
- What is the absolute pressure at that point during normal operation and during the relevant transition?
- What pressure, temperature, gas composition and flow conditions will the optical path see?
- What pipe wall, boss, hole pattern, fitting and installation access are available?
- Does the host instrument need pressure evidence for an association or approval route?
The current Line B product page carries a 20–200 kPa absolute engineering target envelope. That is a project starting point, not a universal statement about every drainage network or a certificate of mechanical pressure resistance.
Why a lower number is not automatically better
A broader or lower pressure range can be useful for a particular network, but it may change optical compensation, mechanical design, validation effort and cost. The correct envelope is the one supported by the actual installation and the evidence the host system needs.
If pressure has not been measured yet, treat it as an open project input rather than filling the gap with a nominal number.
FAQ
Questions engineers ask next
What if the project pressure is not measured yet?
Describe the pump, measurement location, pipe network and expected suction. Treat the pressure as unknown and make it one of the first project measurements.
Is a 10 kPa lower limit automatically better?
No. It may be useful for a particular network, but it also changes design, validation and cost. The correct envelope is the one supported by the actual installation.
Does pressure compensation prove mechanical safety?
No. Compensation describes the reading behaviour over a stated range. Mechanical resistance and sealing need their own design and test evidence.
What pressure does Line B support?
The current Line B design uses a 20–200 kPa absolute engineering target envelope. Project pressure, compensation effectiveness and mechanical evidence must be confirmed separately.