A PHP Error was encountered

Severity: Warning

Message: file_get_contents(https://...@pubfacts.com&api_key=b8daa3ad693db53b1410957c26c9a51b4908&a=1): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests

Filename: helpers/my_audit_helper.php

Line Number: 176

Backtrace:

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 176
Function: file_get_contents

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 250
Function: simplexml_load_file_from_url

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3122
Function: getPubMedXML

File: /var/www/html/application/controllers/Detail.php
Line: 575
Function: pubMedSearch_Global

File: /var/www/html/application/controllers/Detail.php
Line: 489
Function: pubMedGetRelatedKeyword

File: /var/www/html/index.php
Line: 316
Function: require_once

Recommended practice for calibrating vacuum gauges of the ionization type. | LitMetric

Recommended practice for calibrating vacuum gauges of the ionization type.

J Vac Sci Technol A

Pine Place Consulting, LLC, Broomfield, CO 80020.

Published: January 2018

This article represents a recommended practice for the calibration of ionization gauges using the comparison method. In this method, ionization gauges are compared to a working standard that has an SI traceable calibration. The ionization gauge is either of the hot-cathode ionization type or the cold-cathode ionization type. Details of the calibration apparatus, the principle of operation of the gauges, data analysis, uncertainty budget, and reporting the uncertainty are given.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6513016PMC
http://dx.doi.org/10.1116/1.5025060DOI Listing

Publication Analysis

Top Keywords

ionization type
12
recommended practice
8
calibration ionization
8
ionization gauges
8
ionization
6
practice calibrating
4
calibrating vacuum
4
gauges
4
vacuum gauges
4
gauges ionization
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!