Sensit PMD2 Manual de usuario
851 Transport Drive • Valparaiso, IN 46383 (USA)
Phone: 219.465.2700 • www.gasleaksensors.com
INSTRUCTION MANUAL
READ AND UNDERSTAND INSTRUCTIONS BEFORE USE.
For use with combustible gases and optionally available oxygen and toxic gases.
SENSIT®PMD2
PORTABLE METHANE DETECTOR
3
FOR YOUR SAFETY
⚠NOTICE: This safety symbol is used to indicate a potentially
hazardous situation which, if not avoided, may result
in minor or moderate injury.
⚠ WARNING: To reduce the risk of ignition of a flammable
atmosphere, batteries must only be changed and
charged in an area known to be nonflammable.
⚠ WARNING: Do not mix batteries of different age or type.
⚠ WARNING: Not for use in atmospheres of oxygen greater than
21%.
⚠ WARNING: Only zero the instrument in a gas free environment.
⚠ WARNING: To maintain intrinsic safety, service must be
performed by factory authorized technicians with
approved replacement parts only. No substitution of
components is permitted.
⚠ WARNING: All accessories are to be used in an area known
to be non-flammable.
⚠ WARNING: To prevent ignition of flammable or combustible
atmospheres, disconnect power before servicing.
4
CONTENTS
FOR YOUR SAFETY����������������������������������������������������� 3
QUICK START GUIDE�������������������������������������������������� 6
PRODUCT FEATURES: HARDWARE������������������������������� 7
RECHARGEABLE BATTERY AND CHARGING STATION.............................. 7
PUMP AND SAMPLING SYSTEM ............................................................. 7
LED BARS............................................................................................. 8
PRODUCT FEATURES: SOFTWARE�������������������������������� 9
WORK DISPLAY OPTIONS ..................................................................... 9
LEL DEFINITION.................................................................................... 10
ALARMS .............................................................................................. 10
OPERATION AND USE������������������������������������������������ 11
POWER-ON AND STARTUP SEQUENCE.................................................. 11
BUMP TESTING AND CALIBRATION ....................................................... 11
THE WORK DISPLAY.............................................................................. 12
FILTER INTEGRITY AND FLOW BLOCK CHECK ......................................... 12
READY FOR USE ................................................................................... 12
POWER OFF & BATTERY CHARGING...................................................... 13
QUICK MENU TEST MODES ���������������������������������������� 14
TICK .................................................................................................... 15
BAR HOLE TEST .................................................................................... 16
STANDBY MODE .................................................................................. 17
PEAK MODE ........................................................................................ 18
USER MENU �������������������������������������������������������������� 19
SET DATE ............................................................................................. 20
SET TIME.............................................................................................. 21
TIME ZONE.......................................................................................... 22
BUMP TEST........................................................................................... 23
CALIBRATION....................................................................................... 24
CAL LOG ............................................................................................. 25
SESSION LOG ...................................................................................... 26
BAR HOLE LOG .................................................................................... 27
CALIBRATION NEXT DUE....................................................................... 28
BAR HOLE PURGE THRESHOLD .............................................................. 29
5
NOTES ���������������������������������������������������������������������� 30
EQUIPMENT (WEEE) DIRECTIVE ����������������������������������� 31
WARRANTY �������������������������������������������������������������� 32
6
QUICK START GUIDE
1. Remove the instrument and rechargeable battery pack from the carrying case. If the battery
pack is not installed, install the battery into the instrument by sliding it in place, and install
the screws.
2. Press and hold the Abutton until the instrument powers on. The LED bars will illuminate
and the SENSIT logo will be shown on the display.
3. In clean air, allow the instrument to go through the startup sequence, warmup, and Autozero.
This typically takes 45 seconds or less but can take up to 5 minutes.
4. Anautomaticowblocktestmaybepromptedduringstartup.Ifso,placeyourngerover
the inlet at the end of the inlet and wait until the test passes. This should happen within 5
seconds.Ifowblockcannotbeachievedmakesurethelterisinstalledtightontheinlet
capandreplacetheO-ringonthelter,contactSENSIT Technologies for assistance.
Iftheautomaticowblocktestisnotpromptedduringstartup,performthistestafterthe
Autozero is complete and the work display is shown.
FLOW BLOCKED
will be displayed.
NOTE: If any FAIL messages occur during the Autozero, ensure that the instrument is in clear
air, and attempt the zero again by pressing and holding the Cbutton until
AUTOZERO
is shown on the display. Contact SENSIT Technologies if the instrument cannot pass the
Autozero.
4. The work display will be shown with the gas reading. Once this is shown with no fail
messages,andaowblockcheckhasbeensuccessful,youarereadytousetheinstrument.
5. Following federal, state, municipal, and/or company procedures, conduct the leak
investigation, survey, or other procedures as needed. See the Operation and Use and
Quick Menu Test Modes sections in the instruction manual for detailed information.
6. If the source of an odor or known leak needs to be pinpointed, use the
TICK
feature. To
enable, press and release the Bbutton to enter the
QUICK
MENU
. Press and release the
Bbutton again to enable
TICK
.
An audible ticking sound will be heard. Move the end of the probe or tubing towards the
area suspected of leakage. As you get closer to the source, the tick rate will increase. Press
and release the Bbutton or roll back the thumb wheel to decrease the tick. Press and
release the Abutton to deactivate.
7. To zero out very small levels of gas, press and hold the Cbutton until
AUTOZERO
is
shown on the display. This should only be done to set the instrument zero to your working
environment,(e.g.tozerooutasmalllevelofCOonastreetwithheavyvehicletrafc).The
instrument will not allow a zero if unsafe levels of gas are present and will show a fail message.
Note: If the PMD2 is set to show absolute readings instead of relative, performing an
Autozero will not zero the instrument to 0ppm.
8. When your investigation is complete, press and hold the Abutton until the instrument
displays
POWER OFF SHUTDOWN.
7
PRODUCT FEATURES: HARDWARE
RECHARGEABLE BATTERY AND CHARGING STATION
The SENSIT PMD2 comes standard with a rechargeable battery pack. This battery pack is
installed in the body of the instrument and secured with a door and two screws. The battery
pack can be charged while still installed in the instrument, or when removed, with the included
charger. The charger has status LEDs on it to indicate the charging status of the battery.
PUMP AND SAMPLING SYSTEM
All SENSIT PMD2 instruments are equipped with a powerful and efficient pump operates at
1.0 L/min,1.5 L/min, or 2.0 L/min, depending on what is specified at the time of order.
A 0.45 micron hydrophobic dirt and water filter installed in the inlet assembly protects the
internals of the instrument from foreign material. There is an additional internal filter that also helps
to protect the internals from larger damaging debris. If water or dirt does enter the instrument
causing the flow to be restricted, a flow blocked message will be displayed.
⚠ WARNING: Operating the SENSIT PMD2 with a damaged or altered filter can
cause damage to the instrument and void the warranty.
8
LED BARS
The LED bars on the SENSIT PMD2 display different colors and patterns to alert the operator
of various conditions. See the chart below for information on each�
COLOR INDICATION
Solid Green “Ready” indication. No current alarm condition or failure.
Blinking Green Low battery indication. The work display will also give an indication on screen to alert
the operator.
Blinking Red 1. Any alarm conditions.
2. Sensor failure/fault.
Solid Blue Busy, not in gas detection mode (e.g., viewing logs, SMARTLINK,
SMART-CAL 360 Communication)
9
PRODUCT FEATURES: SOFTWARE
WORK DISPLAY OPTIONS
COMBUSTIBLE GAS SCALE AND RESOLUTION
The combustible gas reading will be automatically displayed in one of three options on the
SENSIT PMD2: PPM, %LEL, or %VOL. By default, the reading starts in the PPM scale (from
0.0ppm) and will automatically switch to %LEL above 5000ppm (configurable) and then to %VOL
above100%LEL (equal to 5.0%VOL by default, see the section on LEL Definition).
If the PPM option is enabled, the PMD2 will instead start at 0.0PPM or an absolute value,
and automatically scale to either %LEL (if enabled) or %VOL at the specified upper limit. By
default, this is 2,000PPM. Other options are 5,000PPM, 10,000PPM, or 50,000PPM. If set to
50,000PPM, the PMD2 will not scale to %LEL even if it is enabled, because at the highest LEL
Definition, 50,000PPM is equal to 100%LEL.
In addition, the display resolution for the PPM and %LEL scales are customizable. The default
display resolutions and options for each scale, while on the work display, are listed below.
DEFAULT RESOLUTION
PPM 0.1PPM 0.1PPM, 1PPM or 10PPM
%LEL 0.1%LEL 0.1% - 2.0%LEL
[0.1% increments]
%VOL <5.0%VOL: 0.01%VOL
≥5.0%VOL:0.1%VOL Not adjustable
10
LEL DEFINITION
By default, the SENSIT PMD2 defines the lower explosive limit (LEL) as 5.0%VOL methane. This
is factory adjustable between 4.0% and 5.0% for methane in 0.1% increments, based on
company or industry requirements. This will affect how the instrument displays the %LEL scale. For
example, if the LEL definition is 4.0%VOL, 2.5%VOL methane will display as 62.5%LEL. See the
chart below for examples for natural gas�
ALARMS
The SENSIT PMD2 has audible and visual alarms to warn the operator when hazardous
conditions are being sensed. The alarm setpoints specific to the work display and are outlined
below. The LED bars on the PMD2 changes color based on alarm conditions. See the following
sections for information on each.
WORK DISPLAY ALARMS
WORK DISPLAY
ALARM SETPOINTS
DEFAULT
LEL 50.0%LEL
EX - PPM 10PPM
UEL SETPOINTS DEFAULT
NAT 17.0%VOL
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