ENMET EX-5150-MOS - Manual (Page 8)

EX-5150-MOS ENMET Corporation
6
4.0 Operation of the EX-5150-MOS
It is best to have the EX-5150-MOS transmitters powered up and operational for 24 hours before applying calibration or test
gas to them.
When the EX-5150-MOS transmitter 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 transmitter configuration and calibration condition, the furthest right character in the display may flash a letter
indicating the instrument status. See the Section 4.1.2 below.
4.1 Start up
4.1.1 Typical Start Up
When power is supplied to the EX-5150-MOS , the S/T will display the following sequence of information:
N OTE : Software revision may cause variations of display output.
Example of Display Function
The instrument: Model EX-5150-MOS
Note MOS is not displayed
The instrument: Serial Number
The instrument: Software Revision
IF the right most character is a flashing W
OR
The instrument is in Warm-up mode
This should last about 1 minute
The Signal Output is held at 4mA during warm-up
OR
For Toxic Gas
The instrument: Normal Display Mode
Measurement of target Gas
IF the right most character is a flashing C, F, P or R See Section 4.1.2
4.1.2 Alternate Start Up
Depending on EX-5150-MOS S/T configuration and calibration condition, the furthest right character in the display may flash
a letter indicating the instrument status. See the table below.
Purging occurs automatically for instruments with sensors that require purging. Purge will occur for 5 minutes on instrument
start-up, followed by a 5-minute recovery period. At the end of the recovery period, the transmitter should be ready for
operation. If additional purge time is required, refer to Section 4.1.3 for more information.
Example of Display (may also display 0 LEC) Function
IF the right most
character is a flashing
C
The last calibration of the instrument was invalid
The instrument must be recalibrated
IF the right most
character is a flashing
F
There is a sensor fault
IF the right most
character is a flashing
P
The sensor is being purged:
This function is required for certain sensor types
The duration of purge cycle varies with sensor type
The Signal Output is held at 4mA during purge
IF the right most
character is a flashing
R
The instrument is in Recovery mode after completing the
purge cycle
This should take about 5 minutes
EX-5150
73-1256
S/W X.X
0ppm
0ppmW
0ppmC
0ppmF
0ppmP
0ppmR
0 LEW
0 LEL