Instrumentation &
Process Control
Mass flow controllers, pressure controllers and process instruments from Chinese makers — with the questions that decide whether a unit can go into your line asked out loud: accuracy as a share of full scale or of reading, which gases it was calibrated on, which fieldbus interfaces have passed conformance, whether an intrinsic-safety claim has a certificate number, and the export-control classification of the model.
Accuflow Mass Flow Controllers
Thermal (ACU10FA/10FD/20FD/20FDH/20FDR) and differential-pressure (ACU10FC/20FC/30FC and steam versions) mass flow controllers and meters, plus digital pressure controllers to 40 MPa, from Beijing Accuflow Technology Co., Ltd. (USCC 91110107MA002ARA9P, registered 2015-12-04, RMB 5 million). Business licence sighted: registered scope includes instrument and valve manufacture and import-export. Manuals publish ±0.5% F.S. accuracy, <0.2 s response and RS485 Modbus, Profibus, EtherCAT, Profinet and FF interfaces. Listing status: the live registry read has not been run, so no CMH Verified stamp. Published on the page: three different addresses across the licence and two websites, none clearly a production floor; the Chinese website frames the brand as the Asia-Pacific arm of an established supplier while the licence shows a domestic company held by individuals; IICT4 intrinsic safety is claimed in the manuals with no certificate number; ISO 9001 is stated as obtained in 2022 without a number or issuer; fieldbus conformance and export-control classification are not on record.
Delp Instrument
Benchtop energy-dispersive X-ray fluorescence analyzers (DX-320, DX-320L, DX-520L, IDP-7300) for RoHS, halogen-free and heavy-metal screening, the IDP-6300 XRF coating thickness and precious-metal gauge, the DP-8800 full-spectrum spark optical emission spectrometer and the LC-1000T gradient HPLC, from 深圳德谱仪器有限公司 (USCC 91440300580096482X, registered 2011-07-28 in Shenzhen; registry read 2026-09-22: status 存续 active, RMB 5 million capital fully paid in, 23 social-insurance contributors, High-Tech Enterprise and innovative-SME tags, licensed production of EDXRF, analytical and optical instruments and goods import/export in scope). Stated limits Cd/Cr/Hg/Br ≤1 ppm, Pb ≤2 ppm, Cl ≤5 ppm. Disclosed on the page: no radiation-safety licence, dose-rate report or CE declaration sighted for the X-ray instruments; conflicting figures on one catalogue page; a registry risk record with fifteen historical items including four tax-arrears notices and one enforcement record.
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