GMI PS500 Installation guide

Detection,Protection, Innovation
PS500 USER TRAINING
Iss.A

Detection,Protection, Innovation
•Single Button User Operation
•Integral Impact Resistant Housing
•Graphic Display with Screen Light
•4 Gases Detected Simultaneously
•High Intensity Audible / Visual Alarms
•Datalogging
•Infrared interface for data download
•Rechargeable battery

Detection,Protection, Innovation
•Certification
Hazardous areas –flammable atmospheres:
−ATEX -required for all member countries of the EU
−UL - allows use in America
Performance testing:
−MED (Ships’ Wheelmark) -EU Marine Equipment Directive

Detection,Protection, Innovation
•Ranges of Operation
–4 gases are monitored:
•0-100% LEL propane
•0-25% Oxygen (O2)
•0-1000 ppm Carbon Monoxide (CO)
•0-5% Carbon Dioxide (CO2)
•NB: this slideshow shows pics of 5 gas version
–Gases displayed simultaneously

Detection,Protection, Innovation
•Operating Procedure
–Check the Following Before Use:
•instrument is clean and in good condition
•battery is fully charged and fitted correctly
•Sensor gas inlets are clean and in good condition
•all gas ranges are operational and the instrument is zeroed
•instrument is within the calibration period
–Switch on in Fresh Air / No Faults Displayed

Detection,Protection, Innovation
•Switching the Instrument On
−Press and Hold right button for 1 s.
−Instrument begins warm-up routine. During 30 second
warm-up a countdown timer appears on the screen
−The instrument display identifies the model, serial number,
software version, datalogging option and battery status
during warm-up.

Detection,Protection, Innovation
•Warm-up Information
−Time and Date
•The time and date from the instrument’s built-in clock is displayed
−Calibration Required
•If the display below appears (audible / visual alarms are also
activated), the instrument has detected a fault in the calibration
memory. It must be switched off.

Detection,Protection, Innovation
•Warm-up Information
–Calibration Due Date
•The calibration due date is shown on the display
•If the calibration due date has expired, the audible and visual alarm
activates
•Press right Button once to acknowledge overdue calibration due date,
cancel alarms and continue with warm-up

Detection,Protection, Innovation
•Warm-up Information
–Sensor Confirmation Check
•A diamond symbol appears above each sensor to confirm
that the sensor
–has been recognised
–is working correctly
–is being zeroed
•When sensors are zeroed correctly a tick appears above each
sensor

Detection,Protection, Innovation
•Warm-up Information
–Sensor Check Failure
•If sensor(s) fail the zero check at the end of warm-up, the audible and visual
alarms activate. The instrument display will show a spanner symbol.
•To acknowledge the alarm, press the right button. This clears the audible / visual
alarm. The instrument display will show a flashing spanner symbol alternating with
the faulty sensor zero reading.
alternating
with

Detection,Protection, Innovation
•Normal Operating Display
–When warm-up is completed successfully, screen light
switches off and normal operating screen is shown
–Each gas the instrument can measure is displayed
–Display screen light can be manually switched on with
a single press of the right button. Remains on for 20
seconds and then switches off

Detection,Protection, Innovation
•Viewing Maximum and Minimum Recorded Values
−Start from normal operating screen. Press the right button to switch screen light
on. Press right button again while light is on to view maximum values for each gas.
−Press right button again to view the minimum gas values for each range.
−Stored readings can be removed from memory by pressing holding the right button
for 2 seconds

Detection,Protection, Innovation
•Alarms
−All gas ranges have alarm limits that trigger an alarm when the
measured value exceeds the set level
−If a pre-set alarm is exceeded, the audible alarm sounds, LEDs
flash red and the gas range in alarm flashes on the display
•Flammable LEL Alarm Limits -Up to 2 alarm levels are programmable
•Over-Range Flammable Gas Alarm -If the flammable gas readings exceed 120%
LEL, a safety alarm is activated
•Oxygen Alarm Limits -Up to 1 upper and 2 lower alarm limits are programmable
•Toxic Alarm Limits -Up to 2 instantaneous and 2 Time Weighted Average (TWA)
alarms are programmable for each toxic range

Detection,Protection, Innovation
•Alarms
–The instrument display will signal the range in alarm.
•Example of LoLo Oxygen Alarm Display
•Example of HiHi LEL Alarm Display
toggles to
toggles to

Detection,Protection, Innovation
•Alarms
–Alarms can be latching or non-latching
•Latching - alarm will stay on until the user resets by a press
and hold of the right button when the gas level return to
within the pre-set alarm limits
•Non-Latching - the audible and visual alarm will reset
automatically when the reading returns to within the pre-set
alarm limits

Detection,Protection, Innovation
•Alarms
−Acknowledging Gas Alarms
•Once in a safe gas free area, or the gas reading has returned
to within pre-set limits, press and hold the right button to
acknowledge/clear the alarm sounder and extinguish the red
LED’s.
•Alarms can have the mute function enabled or disabled

Detection,Protection, Innovation
•Alarms
−High Flammable Gas Over-Range Alarms
•Protects the user from danger in event of the LEL
sensor being over exposed to a high concentration of
flammable gas
•When over 120% LEL has been detected, the displayed
value will change to four rising arrows, tone of audible
alarm will change and a flashing message will be shown
alternating
with

Detection,Protection, Innovation
•Alarms
−High Flammable Gas Over-Range Alarms
•The instrument must be returned to a gas free area
and switched off
•Switch off by a press of both buttons together. A
timer from 10 to zero will appear with the
messages below alternating

Detection,Protection, Innovation
•Default Alarm Settings (Table 1)
−For more alarm levels, refer to contract review

Detection,Protection, Innovation
•Confidence Signal
–During normal operation, the instrument sounds a
confidence beep and illuminates the right LEDs briefly every
15 seconds.
–This function makes the user aware that the instrument is
working correctly.
–However, for this project we have disabled the audible beep