SEO Description: Distinguish the FST800-901 operating and compensation temperature ranges, and request configuration-specific accuracy conditions before purchase acceptance.

SEO Keywords: FST800-901, operating temperature, temperature compensation range, differential pressure procurement, accuracy acceptance

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The FST800-901 catalog lists an operating temperature of -10 to 80 C and a temperature compensation range of -10 to 70 C. These are different specification entries, not interchangeable descriptions of one temperature envelope. For a buyer reviewing a dry-gas differential pressure requirement, the distinction matters whenever the intended temperature conditions extend above the published compensation limit. An operating upper limit of 80 C does not establish that the stated comprehensive accuracy applies throughout that interval.

The same official parameter table gives comprehensive accuracy as 0.5%FS. It does not explicitly define how that figure applies between 70 and 80 C, or provide a separate error allowance there. This is an unresolved catalog ambiguity requiring supplier clarification. Procurement should preserve both temperature entries and the accuracy wording, then obtain the conditions applicable to the supplied version. Neither extending the compensation range nor inventing an additional temperature error resolves the missing information.

Application Requirements for System Integrators

The official description identifies air inlet pipelines and indoor-outdoor differential pressure monitoring among the FST800-901 applications. During an equipment specification review, buyers should distinguish the intended temperature conditions from the nominal room temperature used in an initial design discussion. Ask which temperature location and exposure conditions the supplier means by each published limit. Do not assume that the operating entry independently qualifies every gas temperature, enclosure temperature or installation arrangement.

Nexisense Product Reference

Use the FST800-901 temperature entries as separate review gates. First establish whether the proposed conditions fall within the documented operating scope. Then establish the accuracy and compensation basis for those conditions. The following five references come from the fresh official product source; their purchasing checks identify evidence still needed. They are not an expanded performance specification.

Product specification (English): FST800-901

Product Parameters and Procurement Checks

Selection Guide

The inquiry should state the required pressure range, selected output and intended temperature envelope together. Ask the supplier to identify the offered configuration and explain whether the quoted accuracy is supported over that complete envelope. If not, request the applicable documented performance statement without supplying an assumed correction. A response that repeats only the 80 C operating limit leaves the accuracy question open. Equally, a general statement about temperature compensation does not replace confirmation of its stated range.

Require a clear distinction between catalog information and order-specific commitments. Where the project requires performance above 70 C, record whether the supplier confirms a suitable version, proposes a different documented basis, or leaves the requirement unsupported. Purchasing and engineering should agree on that disposition before release. No wider compensation range, special version availability or error magnitude is asserted here.

Integration, Installation and Commissioning

Carry the confirmed temperature conditions into the acceptance specification, not just the equipment schedule. Link the approved supplier document, configuration identity and agreed accuracy statement so receiving staff can compare the delivered item with the purchase requirement. Ask what evidence supports temperature-dependent acceptance and what its scope covers. This is a documentation review, not a procedure for heating equipment or applying pressure. Any physical verification requires separately approved methods and manufacturer instructions.

Illustrative Engineering Application

Illustrative engineering example: a ventilation equipment buyer reviews a specification whose temperature envelope reaches 80 C. Engineering notices that the FST800-901 compensation entry ends at 70 C and asks procurement to obtain written accuracy conditions for the proposed version. The review records the discrepancy as open pending the supplier response. This hypothetical document check reports no heating trial, pressurized operation, successful installation or measured performance result.

Why Consider Nexisense

A focused inquiry to Nexisense should name both limits and the exact unresolved requirement. The related YF-P150 is a separate catalog product, not evidence that the FST800-901 compensation scope can be extended. Any alternative requires its own application and performance review. Keeping the question configuration-specific helps prevent a general product description from becoming an unsupported purchase guarantee.

Frequently Asked Questions

Q1. What is the published operating temperature?

The official FST800-901 table lists -10 to 80 C. Confirm the applicable temperature location and conditions for the ordered version.

Q2. What is the published compensation range?

It is -10 to 70 C, a different upper limit from the operating entry. Preserve that distinction in the inquiry.

Q3. Does 80 C operation establish 0.5%FS accuracy?

No. The operating limit alone does not establish the accuracy conditions across the full operating range. Request explicit supplier confirmation.

Q4. What error applies above 70 C?

The reviewed source does not specify an error there. Do not invent a drift allowance, correction formula or compensation algorithm.

Q5. Does the catalog define the temperature measurement location?

The reviewed temperature entries do not resolve that detail. Ask the supplier which conditions and locations their limits describe.

Q6. What should the purchase specification preserve?

Preserve both temperature ranges, the supplied configuration and the agreed accuracy conditions, including any unresolved limitation or approved exception.

Q7. Can YF-P150 automatically cover the gap?

No. Its own configuration and applicable temperature performance require independent review; related-product placement is not substitution approval.

Q8. Does this review require a heating test?

No. It establishes documentation questions. It supplies no thermal test method or authorization for heating or pressurized work.

Summary

Treat operating eligibility and compensated measurement performance as separate requirements. Retain -10 to 80 C and -10 to 70 C exactly, and obtain an order-specific accuracy basis before accepting a requirement that extends beyond the documented compensation range.

Further Reading: Related product specification (English); Industrial pressure product range (English)