VPXL and VPXL Autosampler Manual Glossary

AC Power Connection
Power supply requirement for the Vapor Pro XL
Autosampler
Optional accessory allowing automated testing of up to 16 samples sequentially
Balance
External Accessory used to weigh samples before testing
Bar Code Reader
Optional accessory for entering data like sample IDs and lot numbers by scanning barcodes, useful for efficiency and accuracy
Calibration
Process of verifying or adjusting the instrument’s accuracy. Includes RH system calibration, temperature calibration, and flow sensor calibration
Carrier Gas
Either dry nitrogen or dry air is used in the instrument to transport volatiles to the sensor. Recommended to have a dew point of -40°C or lower
Cold Start
Featuring allowing the oven to start a test at room temperature before ramping up to the test setpoint, usually to enhance analysis for certain samples
Dry Air Generator
Accessory that provides a continuous supply of dry air to the instrument without needing a compressed air source
Dry Gas Inlet
Connection point on the instrument where the dry gas (air or nitrogen) is supplied for testing
Ethernet Setup
Configures the device’s Ethernet connection, allowing remote access via a local network
End Criteria
Determines when a test end based on rate, time, or prediction settings to meet specific analysis requirements
Factory Idle
Pre-programmed setting used to rapidly cool the instrument’s oven

Flow Check and Adjustments
Procedure to verify and adjust the carrier gas flow rate to ensure consistent testing conditions

Graph Data
Graphical representation of test results showing moisture loss rate and temperature against time

Hydrophobic Filter Kit
Accessory recommended for samples with unreacted or volatile components to protect the RH sensor from contamination

Insert for Crimp Top Sample Vials
Inserts are available to accommodate crimp-top vials in various sizes for specific sample requirements

Karl Fischer Correlation
Instrument provides a moisture analysis method that correlates with the Karl Fischer titration without using reagents

Login Setup
Security features restricting access to authorized users by requiring login credentials for critical functions like calibration and configuration

Memory
Storage capacity of the instrument, holding up to 20 test programs and 1000 test results

Nitrogen Control c
Feature for controlling the nitrogen flow, useful for conserving nitrogen when the instrument is idle

Oven Fan
Fan in the oven that speeds up cooling between tests to reduce waiting times and improve efficiency

Pass/Fail Criteria
Option to set moisture limits for tests, where the results can be categorized as “pass” or “fail” based on the predefined moisture thresholds

Pre-Purge
Setting available in the Autosampler to remove headspace moisture from vials before testing, useful for sensitive samples

Prediction Algorithm
Feature that estimates the final moisture results before all moisture is driven off, thus reducing test times

RH Sensor
(Arching) Relative humidity sensor used in the Vapor Pro XL to measure the moisture content of the sample

Sample Prompt
Custom message displayed at the start of a test to instruct the user on sample preparation

Sample Weight Entry
Allows users to input sample weights manually or by connecting a balance for automatic input

Standby Timeout
Features that reduce the oven temperature to a standby level after a specified idle time to conserve energy and prolong component life

System Calibration
Calibration ensures the accuracy of the moisture measurement system. Should be done regularly and before the first test

Test Program
Set of predefined parameters for a specific sample type, including sample size, heater temperature, and test criteria. Up to 250 programs can be saved

Temperature Calibration
Ensures the accuracy of the oven temperature, done with a Temperature Calibration Interface (TCI) kit

Time Rate
Test ending criterion where the test ends after a specified rate is achieved following a set duration

USB Host
USB port for connecting accessories like a printer, keyboard, or USB drive

USB Slave
Port for connecting the instrument to a PC for data transfer or control

Web Server
Optional Feature allowing remote access to the instrument’s data and configuration through a local network or intranet

Zero Vial Purge
Setting to capture all sample moisture by setting the vial purge time to zero, often used when residual moisture needs to be retained

Shear Stress
Stress due to the Torsional Load. It is the stress between parallel layers of powder (Flow Function and Time Consolidated Flow Function tests) or a layer of powder and the lid (Wall Friction test)

Steady State Flow
Continuous powder flow where the Normal and Shear Stresses have reached a constant level

Time Consolidation Test
Compacts the powder at a given Consolidation Level for an extended period (hours, overnight to represent static storage in a hopper) before measuring the Failure Locus

Torsional Distance
Distance that the trough has rotated from its starting position at the beginning of the test

Torsional Load
Rotational force applied during testing to simulate shear conditions within the powder sample

Trough
Container that holds the powder sample during testing, available in standard and small volume sizes

Unconfined Failure Strength
Maximum stress a compacted powder can withstand at a free surface, after it has been compacted to a given Consolidation Level

Wall Cohesion
Measure of the adhesives force between a powder and the wall of a hopper or chute

Wall Friction Test
Test to determine the interaction between powder and wall surfaces, influencing hoper design