Environmental chamber documentation

Verify the Evidence Behind the Test Chamber

A certificate is useful only when its organization, scope, model, configuration and validity match the equipment being purchased.

This page organizes DERUI quality-management, product-conformity, calibration, inspection and engineering documents for environmental test chambers. Use it to identify the evidence required for temperature, humidity, thermal shock, salt spray, rain, dust, weathering, altitude and other simulated-environment systems.

Before relying on a published document, compare it with the exact chamber model, working range, controller, electrical configuration, safety options and destination-market requirements stated in the quotation.

Quality ManagementReview the certified organization, audited scope and validity.

Product ConformityMatch directives, standards and listed chamber models.

Calibration & InspectionConfirm parameters, ranges, dates and identified equipment.

FAT & Technical FilesDefine the records required for the ordered configuration.

Scope notice: a quality-management certificate is not product approval, and one model-specific document does not automatically apply to every DERUI chamber.

Published quality and engineering records

Environmental Chamber Certificates and Documented Technology

Review the visible document details first, then confirm whether the scope applies to the chamber model, configuration and destination market in your project.

Seven published documentsOne quality-management certificate, five environmental-simulation patents and one trademark registration.

Quality management

ISO 9001 Quality Management System

This certificate identifies the audited organization and its quality-management scope. It supports review of DERUI's management system, but it is not a product approval for every chamber.

Organizationบริษัท Guangdong Derui Testing Equipment Co., Ltd.

Registration No.12825Q20832R0S

มาตรฐานGB/T 19001-2016 / ISO 9001:2015

IssuedJune 24, 2025

Valid untilJune 23, 2028

Published scopeProduction and sales of simulation environment testing equipment

View Certificate Image →

Invention patent

Cold-Balance Oil-Return Environmental Simulation Equipment

ZL 2022 1 1262299.9

Authorization announcement: CN 115468590 B

Granted July 9, 2024

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Utility model

Explosion and Fire-Suppression Device

ZL 2022 2 3167352.5

Authorization announcement: CN 218674674 U

Granted March 21, 2023

View Patent Image →

Utility model

Cold-Balance Oil-Return Equipment

ZL 2022 2 2711402.5

Authorization announcement: CN 218511777 U

Granted February 21, 2023

View Patent Image →

Utility model

Energy-Saving Environmental Simulation Equipment

ZL 2022 2 2741142.6

Authorization announcement: CN 218512345 U

Granted February 21, 2023

View Patent Image →

Utility model

Electronic Expansion Valve Energy-Saving Control

ZL 2022 2 2741884.9

Authorization announcement: CN 218271418 U

Granted January 10, 2023

View Patent Image →

Trademark

DERUI Trademark Registration

Registration No. 62004215

Class 9 · Registered October 7, 2022

Valid through October 6, 2032

View Registration Image →

Scope notice: patents document specific inventions and do not prove that every feature is installed on every chamber. Confirm the ordered model, configuration and applicable conformity or calibration files separately.

Product conformity by model

EMC and LVD Documents by Environmental Chamber Model

Use the model number—not only the product-family name—to identify a relevant conformity document. Final applicability must be checked against the ordered controller, voltage, safety configuration and destination market.

Published model list 01

Temperature & Humidity Test Chambers

Documents published for the model references shown below.

DR-H201DR-H202DR-H204

EMC 2014/30/EUElectromagnetic compatibility documentYRT202601538C

LVD 2014/35/EULow-voltage directive documentYRT202601539C

Published issue date: February 2, 2026

Check before use: exact model, controller, voltage, supplied configuration and destination-market requirement.

Published model list 02

Salt Spray Test Chambers

Documents published for the model references shown below.

DR-H304DR-H304-F

EMC 2014/30/EUElectromagnetic compatibility documentYRT202603164C

LVD 2014/35/EULow-voltage directive documentYRT202603165C

Published issue date: March 24, 2026

Check before use: chamber version, controller, electrical configuration, test accessories and destination-market requirement.

Project-specific verification

Other Environmental Chamber Families

The following equipment families require document confirmation for the exact model and ordered configuration.

Status: verify before quotation.
No conformity certificate number is claimed here without a matching published document.

Verification required

Thermal Shock Chambers

Confirm the transfer system, refrigeration configuration, controller, voltage and applicable model documents.

Verification required

Rain & IP Test Chambers

Identify the IP method, pump and spray configuration, electrical system and exact chamber model.

Verification required

Dust Test Chambers

Check dust circulation, vacuum system, electrical configuration and the model listed on the requested file.

Verification required

Altitude & Battery Chambers

Review low-pressure, battery-safety, ventilation, protection and destination-specific documentation separately.

Need the Documents for a Specific Chamber?

Send the model, voltage, configuration, destination country and required directive or purchasing-document list.

Request Model-Specific Documents →

Calibration, inspection and acceptance

Choose the Document That Proves the Required Chamber Performance

A calibration certificate, factory inspection record and factory acceptance test answer different questions. Define the evidence required by the laboratory, purchasing specification or customer audit before the chamber is built.

Do not request “a certificate” without a scope.State the parameter, range, method, load, tolerance, issuing organization and required delivery stage.

01

Calibration Certificate

Records measurement results for identified functions, ranges, sensors and a specific calibration date.

Define before ordering

Temperature and humidity parameters
Required setpoints and operating ranges
Empty or loaded chamber condition
Sensor positions and measurement points
Required laboratory or accreditation
Certificate language and due date

Limit: calibration results apply to the identified equipment and stated conditions; they do not automatically prove every performance claim.

02

Factory Inspection Record

Documents manufacturing and functional checks completed for the ordered chamber before release.

Recommended checks

Ordered model, dimensions and configuration
Controller, sensors and electrical system
Heating, cooling and humidification functions
Alarm, interlock and protection logic
Doors, seals, feedthroughs and drainage
Serial number and inspection status

Limit: a factory record should identify the inspected unit. A generic checklist is not evidence for a different serial-numbered chamber.

03

Factory Acceptance Test

Compares the ordered chamber with an agreed acceptance protocol before shipment.

Agree the protocol

Test method and measurement basis
Temperature or humidity profile
Representative load and fixture
Ramp, recovery, dwell or transfer definitions
Data interval and allowed tolerance
Witnessing, report and deviation handling

Limit: empty-chamber FAT results should not be represented as loaded performance unless the agreed test includes the specified load.

Environmental Chamber Verification Matrix

Match the purchased chamber function with measurable evidence and a clearly defined test condition.

Acceptance basis:
ordered configuration + written method + agreed condition + identified instrument + recorded result.

Performance area	What should be defined	Possible evidence
Temperature performance	Setpoints, deviation, fluctuation, uniformity, sensor layout and stabilization rule	Calibration results, mapping report or agreed FAT data
ประสิทธิภาพความชื้น	Valid temperature-humidity envelope, setpoints, deviation, water and stabilization conditions	Humidity calibration or mapping results under stated conditions
Heating and cooling	Start/end points, chamber state, load, ambient condition and rate calculation	Recorded profile and calculation in the acceptance report
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits	Zone conditions, basket load, transfer start/end, recovery, dwell and cycle count	Transfer record, zone data and representative loaded-cycle report
IP, dust or salt spray	Method, nozzle or dust/salt condition, pressure/flow, duration and specimen arrangement	Functional inspection, instrument records and project-specific FAT
Safety functions	Alarm thresholds, interlocks, emergency stop, ventilation and optional protection systems	Inspection checklist, alarm test and ordered safety-function record

Write the Required Evidence into the Technical Agreement

Specify which records must be supplied with the quotation, before shipment and with the final equipment documentation.

Document availability, issuing body, cost and delivery time must be confirmed for the exact project.

From assembly to documented delivery

How DERUI Builds the Quality Record for Each Test Chamber

Certificates describe a management or conformity framework. Project records show how the ordered chamber was assembled, inspected, tested and prepared for delivery. Agree the required checkpoints and documents before production.

Five evidence stagesAssembly · safety verification · measured performance · factory acceptance · final delivery records.

DERUI environmental test chamber refrigeration system assembly and component inspection

01

Assembly Records for the Ordered Chamber

Production checks should identify the chamber model and ordered configuration, then follow the enclosure, refrigeration, heating, humidity and electrical systems through assembly.

Working-space construction, door, seal, window and feedthroughs

Refrigeration, heating, humidification and circulation components

Controller, sensors, wiring and ordered electrical configuration

Selected accessories and project-specific options

Possible record: assembly checklist, component verification and configuration record.

DERUI environmental test chamber controller and functional testing in the workshop

02

Controller, Alarm and Safety-Function Checks

Functional inspection should confirm the supplied controller, measurement channels, alarm thresholds, protection devices and any project-specific safety options.

Program operation, sensor display and data functions

Over-temperature and electrical protection

Refrigeration alarms, interlocks and emergency stop

Optional ventilation, detection or suppression functions

Possible record: electrical inspection, alarm sequence and safety-option verification.

DERUI environmental test chamber sensor placement for temperature performance mapping

03

Measured Performance Before Release

Every result should be connected to a stated condition. Record the sensor layout, chamber state, load, setpoints, stabilization rule, measurement interval and allowed tolerance.

Temperature deviation, fluctuation and uniformity

Humidity performance within the valid operating envelope

Heating, cooling, recovery or transfer definitions

Empty or representative loaded test condition

Possible record: mapping data, recorded profile and calibration certificate when specified.

DERUI environmental test chambers undergoing factory functional and acceptance testing

04

Acceptance Against the Technical Agreement

The FAT should compare the completed chamber with the agreed specification and acceptance protocol. Any deviation and corrective action should be recorded before shipment.

Model, dimensions, controller and ordered options

Agreed temperature, humidity or environmental profile

Test load, measurement method and acceptance tolerance

On-site, remote or document-based witnessing

Possible record: FAT protocol, test-data report, deviation log and acceptance record.

DERUI test chamber nameplate manufacturing number and final inspection label

05

Final Identification and Delivery File

Before release, connect the physical chamber and supplied accessories with its serial number, inspection status, manuals, drawings and agreed project records.

Nameplate, serial number and final appearance

Accessories, spare parts and packing list

Manuals, electrical drawings and document index

Packing protection and shipment identification

Possible record: final inspection checklist, packing list and project document package.

Historical third-party calibration record

DR-H202 Environmental Chamber Calibration Certificate

This three-page record identifies a DERUI-manufactured constant temperature and humidity chamber, the calibration basis, reference instruments, sensor layout and recorded temperature-humidity results.

Document details
Model: DR-H202
Certificate No.: 1023CT1000572
Approved: 24 April 2023
Issued by: Henan Institute of Metrology

DR-H202 environmental chamber calibration certificate identification page issued by Henan Institute of Metrology — Certificate page 1 of 3
Chamber Identification and Certificate Information
Shows the applicant, instrument name, model DR-H202, serial number, DERUI as manufacturer, issuing organization and approval date.

DR-H202 chamber calibration basis environmental conditions and reference instrument records — Certificate page 2 of 3
Calibration Basis and Reference Instruments
Records the calibration reference, site conditions, calibration date, measurement ranges and traceability information for the instruments used.

DR-H202 chamber calibration sensor layout temperature humidity deviation uniformity and fluctuation results — Certificate page 3 of 3
Sensor Layout and Recorded Calibration Results
Displays the measurement-point arrangement and recorded temperature and humidity deviation, uniformity, fluctuation and uncertainty results.

Scope and validity notice: this certificate was approved in 2023 and is displayed as a historical project record, not as evidence of current validity or coverage for every DERUI chamber. Current calibration documents, scope and measurement points depend on the ordered model and project requirements.

Evidence rule: use photographs and records from the actual DERUI process. Do not present a generic factory image as proof of calibration, FAT or third-party certification.

Define the Required Quality Records Before Production

Send the chamber model, test method, acceptance conditions and purchasing-document list for a project-specific review.

Request a Quality Document Review →

Certificate and quality-document questions

Confirm the Evidence Required for Your Test Chamber

Document requirements differ by chamber model, configuration, purchasing specification and destination market. Use these answers to prepare a precise request before quotation.

Fastest route to a useful answerSend the exact model, test method, voltage, destination and required document list—not only the word “certificate.”

Does ISO 9001 certify every DERUI test chamber?

No. ISO 9001 identifies the certified organization and quality-management scope. It is not model-specific product approval. Review conformity, calibration and inspection documents separately for the ordered chamber.

How do I confirm whether an EMC or LVD document covers my model?

Check the product name, exact model list, directive, referenced standards, certificate number and issuing details shown on the document. Then confirm the controller, voltage and ordered configuration with DERUI.

Can a calibration certificate be supplied with the chamber?

Availability must be confirmed for the project. State the required parameters, ranges, setpoints, sensor positions, accredited laboratory or issuing body, certificate language and delivery stage before quotation.

What is the difference between calibration and FAT?

Calibration records measured results for identified functions and conditions. FAT compares the completed chamber with an agreed technical and acceptance protocol. One document does not automatically replace the other.

Can the chamber be tested with a representative specimen load?

It can be requested when practical, but the specimen dimensions, mass, heat output, fixture, operating state, sensors and acceptance limits must be agreed. Empty-chamber results should not be represented as loaded performance.

What information is needed for a document review?

Provide the chamber type and model, test standard, working range, specimen information, voltage, selected safety options, destination country, required certificates or records and the review deadline.

Request a Certificate and Quality-Document Review

Define the equipment and purchasing requirement so the available compliance, calibration, inspection and FAT records can be checked against the actual project.

Chamber type and model

Test method and range

Voltage and configuration

Destination market

Required document list

Review or delivery deadline

Document availability, applicability, issuing body, cost and delivery timing must be confirmed for the exact chamber and project.

Request a Document Review →

Accuracy notice: published certificates and patents should be read according to their visible holder, number, scope, model list and validity. Do not assume that one document applies to every DERUI product.

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Verify the Evidence Behind the Test Chamber

ISO 9001 Quality Management System

Cold-Balance Oil-Return Environmental Simulation Equipment

Explosion and Fire-Suppression Device

Cold-Balance Oil-Return Equipment

Energy-Saving Environmental Simulation Equipment

Electronic Expansion Valve Energy-Saving Control

DERUI Trademark Registration

Other Environmental Chamber Families

Thermal Shock Chambers

Rain & IP Test Chambers

Dust Test Chambers

Altitude & Battery Chambers

Need the Documents for a Specific Chamber?

Define before ordering

Recommended checks

Agree the protocol

Environmental Chamber Verification Matrix

Write the Required Evidence into the Technical Agreement

Assembly Records for the Ordered Chamber

Controller, Alarm and Safety-Function Checks

Measured Performance Before Release

Acceptance Against the Technical Agreement

Final Identification and Delivery File

DR-H202 Environmental Chamber Calibration Certificate

Chamber Identification and Certificate Information

Calibration Basis and Reference Instruments

Sensor Layout and Recorded Calibration Results

Define the Required Quality Records Before Production

Request a Certificate and Quality-Document Review

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