AEROCET 531S Manual Rev H
Page 13
4.4.4. Warning / Error Messages
The AEROCET 531S displays warning/error messages on the top line of the Operate
screen. These messages alternate with the normal date/time header. The following
table lists the warning/error messages:
Display Message
Description
LOW BATTERY!
Low battery warning. Less than 15 minutes of normal operation remaining.
SENSOR ERROR!
Particle sensor error.
4.5.
Sample Related Functions
The following sub-sections cover sample related functions.
4.5.1. Starting/Stopping
To start or stop a sample, press the
START/STOP
key. A sample event can be manually
started or stopped from either the Operate screen or the menu.
4.5.2. Measurement Type
The measurement type determines if the instrument reports mass (µg/m
3
) or particle
concentration (particles/volume). Measurement type is discussed in section 5.2.
4.5.3. Sample Mode
The sample mode controls single sample or continuous sampling. The
MANUAL
setting
configures the unit for a single sample. The
AUTO
setting configures the unit for
continuous sampling. Sample modes are discussed in section 5.2.
4.5.4. Hold Time
The hold time is used when the sample mode is set to auto (continuous sample). The
hold time represents the time from the completion of the last sample to the start of the
next sample. The hold time is user settable from 0
– 999 seconds and is discussed in
section 5.2.
4.5.5. Real-Time Serial Report
AEROCET 531S provides real-time report out the serial port at the end of each sample.
The format of the report is controlled by the
REPORT
setting (Section 5.4). Section 7.3
covers the real-time output format.
