ENMET PID-Guard - Manual (Page 10)

PID-G UARD ENMET Corporation
8
4.0 Operation
When the PID-G UARD is installed as described in Section 3, and in clean air, the POWER green LED is on, the display is lit
and the information on the display is measurement of hydrocarbon detected by the PID-G UARD . The red alarm and fault LEDs
are not lit.
4.1 Start Up PID-G UARD
When the PID-G UARD is first powered up, it goes through a series of momentary screens, which identify the instrument model
number, serial number and software revision. After all of the momentary screens have been displayed, the instrument arrives at
the Main Gas Display showing the gas concentration and unit of measurement.
Depending on instrument configuration and calibration condition, the furthest right character in the display may flash a letter
indicating the instrument status. See the Section 4.1.1 below
4.1.1 Typical Start Up
When power is supplied to the PID-G UARD , the instrument will display the following sequence of information:
Typical start up sequence of information displayed.
Example of Typical Start Up Display Function
The instrument: Model PID-G UARD
The instrument: Serial Number
The instrument: Software Revision
IF the right most character is a flashing W The instrument is in Warm-up mode
This should last about 1 minute
The Signal Output is held at 4mA during warm-up
IF the right most character is a flashing C The instrument has failed Calibration
The last good calibration values are retained, but the sensor
may not be responsive to gas
A new Calibration should be performed As Soon As Possible
The instrument: Normal Display Mode
Measurement of Carbon Monoxide
N OTE : Software revision may cause variations of display output.
PID-G UARD
302- 20
S/W 6.5F
0 ppW
0 ppm
0 ppC