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Integrated sampling pump
The instrument includes an integrated sampling pump. This diaphragm-type pump that
provides a 450 to 550 cc per minute flow rate. Connecting a Teflon or metal tubing with 1/8"
inside diameter to the gas inlet port of the instrument, this pump can pull in air samples from
100' (30 m) horizontally or vertically.
Note: In Search Mode, the pump turns on when a sample measurement is started, and turns off
when the sample is manually stopped.
If liquid or other objects are pulled into the inlet port filter, the instrument detects the
obstruction and immediately shuts down the pump. The alarm is activated and a flashing pump
icon is displayed. You should acknowledge the pump shutoff condition by clearing the
obstruction and pressing the [Y/+] key while in the main reading display to restart the pump.
Backlight
The LCD display is equipped with an LED backlight to assist in reading the display under poor
lighting conditions.
Datalogging
During datalogging, the instrument displays a disk icon to indicate that datalogging is enabled.
The instrument stores the measured gas concentration at the end of every sample period (when
data logging is enabled). In addition, the following information is stored: user ID, site ID, serial
number, last calibration date, and alarm limits. All data are retained (even after the unit is
turned off) in non-volatile memory so that it can be downloaded later to a PC.
Datalogging event
When Datalogging is enabled, measurement readings are being saved. These data are stored in
"groups" or "events." A new event is created and stored each time the instrument is turned on
and is set to automatic datalogging, or a configuration parameter is changed, or datalogging is
interrupted. The maximum time for one event is 24 hours or 28,800 points. If an event exceeds
24 hours, a new event is automatically created. Information, such as start time, user ID, site ID,
gas name, serial number, last calibration date, and alarm limits are recorded.
Datalogging sample
After an event is recorded, the unit records a shorter form of the data. When transferred to a PC
running Safety Suite Device Configurator (SSDC), this data is arranged with a sample number,
time, date, gas concentration, and other related information.
Handheld PID Monitors
51
User Manual
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