Sensit HCN User manual

Hydrogen Cyanide Analyzer
Warning: To prevent ignition of ammable
or combustible atmospheres, disconnect
power before servicing.
INSTRUCTION MANUAL
SENSIT®HCN
Read and understand
instructions before use.
For Models SENSIT HCN
and SENSIT HCN CO
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⚠Warning: To prevent the risk of ignition of ammable
atmospheres, batteries must only be changed in an area known
to be non-hazardous.
⚠Warning: To prevent ignition of ammable or combustible
atmospheres, disconnect power before servicing.
Do not mix batteries of different age or type.
FOR YOUR SAFETY
NOTICE: ⚠CAUTION: This safety symbol is used to
indicate a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
ii
HYDROGEN CYANIDE EXPOSURE
STANDARDS AND HEALTH EFFECT CHART
Hydrogen Cyanide can cause rapid death due to metabolic asphyxiation.
LEVEL EFFECT
4.7ppm NIOSH recommended exposure limit (REL)
10ppm OSHA permissible exposure limit (PEL)
135ppm Death after 30 minutes exposure
181ppm Death after 10 minutes exposure
270ppm Death after 6-8 minutes exposure
3,404ppm Death after 1 minute exposure
ppm = parts per million Recent study estimations (Hathaway et al. 1991)
5.6% HCN lower ammable limits in air (percent by volume)
40.0% upper ammable limits in air (percent by volume)
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3
CONTENTS
Preparation
For Your Safety .............................................................. ii
Contents .................................................................... 3-4
Parts and Accessories ...................................................5
General Description .......................................................6
Product Specications ...................................................7
Product Features ..................................................... 8-10
Basic Operation
Battery Installation/Replacement .................................11
Operation and Use ................................................ 12-14
Calibration Check ........................................................15
User Menu and Detailed Operation
User Menu / Function Descriptions .............................16
Printing to Optional IR Printer ......................................17
Power Off - Automatic Shut-Off ...................................18
Set Clock .....................................................................19
Show A Calibration Log ...............................................20
Show A Session Log ....................................................21
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4
CONTENTS
Test and Calibration
Bump Test ....................................................................22
Smart-Cal ....................................................................23
Preparing For Calibration ...................................... 24-25
Hydrogen Cyanide (HCN) Calibration .........................25
Carbon Monoxide Calibration ......................................26
Warranty ....................................................... Back Cover
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PARTS AND ACCESSORIES
Standard Accessories (Included)
872-00001 Hard Carrying Case
883-00023 Hot Air Probe (Flue Gase)
873-00005 Dirt and Water/Particle Filter
750-00015 Instruction Manual
310-00004 3”C” Alkaline Batteries
873-00017 External Hydophobic Filter Assembly
Optional Accessories and Standard Replacement Parts
873-00008 Replacement Dirt and Water Filter Assembly
870-00004 IR Printer
870-00039 IR Link Interface w/ SmartLink Software
914-00000-01 Smart-Cal Automatic Calibration Station
Calibration Kits
Contact us with instrument model number for correct Calibration Kit.
5
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GENERAL DESCRIPTION
The SENSIT® HCN is an advanced state-of-the-art Hydrogen Cyanide
(HCN) gas analyzer designed to provide part per million readings from
0-100ppm.
The SENSIT® HCN is capable of performing ambient as well as hot or
smoldering air samples with its hot air probe and powerful rotary vane
pump.
The SENSIT® HCN is equipped with an advanced long life electrochemical
sensor that can be eld calibrated and has a low replacement cost. A
renewable lter eliminates cross sensitivity to many gases.
The SENSIT® HCN may also be used as a personal monitor. There
is an alarm at 5ppm. The display must be in view to determine gas
concentrations.
The SENSIT® HCN may be equipped with an optional carbon monoxide
sensor (CO) to simultaneously monitor from 0-2000ppm CO
6
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SPECIFICATIONS
PRODUCT SPECIFICATIONS
Power Supply: 3 “C” Alkaline Batteries
Sensor: Long Life Electrochemical
Range: 0-100ppm HCN 0-2000ppm CO*
Alarm: Preset 5 ppm HCN Preset 50 ppm CO*
Alarm Range: 1-10 ppm HCN 1-300 ppm CO*
Warm Up: Approx. 1 Minute
Response Time: 90% of reading < 60 sec.
Duty Cycle: 60 Minutes
Battery Life: Approx. 30 Hours
Size: 3.5” x 12” x 1.6” (89 x 305 x 40 mm)
Weight: 1.1 lbs. (500 g)
Probe Length: 9 Inches
Tube Length: 5 Feet
Hot Air Probe: 700° F (371.11 celsius) @ 5 Minutes
*Optional
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Warning: To prevent ignition of ammable or combustible atmospheres,
disconnect power before servicing.
7WA6
Approved UL913, For Class 1, Division 1, Groups C & D
hazardous locations when used with alkaline or NiMH batteries.
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PRODUCT FEATURES
WATER / DIRT FILTER
HOT AIR PROBE
INFRARED COMMUNICATIONS
BACKLIT LCD DISPLAY
ALARM LED
OPERATION BUTTONS
BATTERY COMPARTMENT
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PRODUCT FEATURES
SENSIT® HCN instrument is constructed of high impact ABS plastic to
withstand the rigors of eld use.
Incorporated in the hand grip area is the battery compartment. SENSIT®
HCN requires 3 “C” type alkaline batteries. Duracell MN 1400BK provide
approximately 30 hours of use.
The alarm can be easily heard with the speaker located in the back of
the instrument.
An infrared Port is located on the right side to allow the SENSIT® HCN
instrument to download calibration data and readings the operator has
elected to save to the instrument’s on-board memory.
A two line display continually updates gas concentrations and internal
functions such as air ow block and battery power. LEDs below the
display indicate READY or ALARM conditions.
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PRODUCT FEATURES
There are 3 operational button pads on the front of the SENSIT® HCN
instrument.
BUTTON (A) POWER/MUTE
operates power and mute features.
BUTTON (B) MENU
Operates a user menu to calibrate, download and set the clock.
BUTTON (C) SAVE/ZERO
Activates the save feature and performs a manual zeroing of the
sensors.
Pressing any button will produce a click sound.
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11
BATTERY INSTALLATION/REPLACEMENT
Battery replacement is necessary when the display reads BAT LOW,
an audible alarm sounds and the green ready LED ashes. When BAT
LOW is displayed, the instrument has approximately 30 minutes of
useful operation time prior to shut off.
⚠CAUTION: Always change batteries in an environment free of
combustible gases.
Remove the battery sleeve cover by depressing the locking tab on the
front of the handle with a coin or at object and pulling the handle away
from the top or display area of the instrument.
Place 3 approved batteries into the battery holder. For best results hold
the battery compartment so that it lays in your right hand. With your
left hand install the battery that goes toward the front rst. The battery
that is in contact with the rear spring second and nally insert the third
battery in the center by forcing the second battery such that the spring
compresses and allows the batteries to go into place. If you do not
use your right hand to hold the bottom of the battery compartment the
batteries can come out.
Observe the polarity markings on the inside of the battery holder.
Improper installation will cause the instrument not to operate. Replace
the battery sleeve and allow the locking tab to snap into position.
Check to be sure the handle is secure to the instrument body by gently
pulling the handle away. The handle will remain rmly in place if a proper
connection is made.
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OPERATION AND USE
⚠CAUTION: Always start your SENSIT® HCN in a gas free
environment to insure a proper zero.
1. Push the POWER/MUTE BUTTON (A). A beep will be heard during
any button activation.
2. If the display fails to illuminate or “BAT LOW” is shown on the display,
replace or recharge the batteries. There is room in the carrying case to
keep an extra set of alkaline batteries.
3. Upon successful start-up, the pump will start and the display will
illuminate. The instrument will then display:
a. Product name and software version.
b. System check for proper pump and battery operation.
c. Date and time.
d. Serial Number.
e. Display “CAL PAST DUE” only when calibration is overdue.
f. Warm-up countdown for 10 seconds.
g. Display “AUTOZERO” indicating the zeroing of all sensors.
h. Any sensor that is completely inoperable during start up will be
indicated by “FAIL” on the display in the location where
readings would normally be located. The GREEN READY LIGHT
will not illuminate indicating the instrument requires service.
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OPERATION AND USE
4. Prior to use, use your nger to block the inlet of the instrument for 4-5
seconds. The display will read “FLOW BLOCKED” if all seals are intact.
During pump ow block, a beep will occur every 2 seconds until the
pump restarts and adequate ow is present.
⚠CAUTION: Always operate this instrument with Filter Kit or the
High Temperature Probe installed. This will prevent water or debris
from damaging the internal pump.
5. When testing areas with elevated temperatures always attach
the optional hot air probe assembly. Attach the probe by twisting the
connector of the probe onto the matching adapter at the end of the
instrument
These connections need only be nger tight. It is necessary to use a
particle lter when performing ue testing. The use of an unapproved
probe assembly may void the warranty.
⚠CAUTION: Do not handle the steel portion of any hot air probe
after use as burns may occur!
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OPERATION AND USE
6. To disable the audible alarm press and release the POWER/MUTE (A)
button. To enable the alarm press the POWER/MUTE (A) button again.
7. At any time the operator may save the readings on the display by
pressing the SAVE/ZERO (C) button. This will save all readings for
download at a later time. The memory is factory set to store 6 events.
This can be adjusted from 1-100 at the factory. The most recent save is
rst during download.
8. Following department procedures move to the areas where gas
readings are suspected or must be tested. Use necessary accessories
to draw samples from areas not accessible with the instrument itself,
such as conned spaces. During sampling the respective readings may
change. Audible and visual alarms will activate when the preset limits
are reached.
9. To save any displayed readings, press and release the SAVE/ZERO
BUTTON (C). The data saved can be viewed or downloaded later.
Printouts are possible using the optional IR printer. See Menu operation
for complete instructions.
10. When being used in dark areas an automatic backlight will illuminate
the display.
11. To turn instrument off, push and hold the POWER/MUTE (A) button
for 5-6 seconds until “POWER DOWN” appears on the display.
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15
CALIBRATION CHECK
To verify the accuracy of SENSIT® HCN, it must be exposed to a known
concentration of test gas that will test any sensor combination included in
your particular model. Any sensor that does not meet the specications
listed in this manual may require calibration or repair. A calibration check
does not update the calibration due date. Full calibration is required to
update these times.
A calibration past due message will be displayed during warm-up if
calibration has not been performed per your company specied interval.
Anytime it is suspected the SENSIT® HCN is not working properly,
check calibration.
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USER MENU
The SENSIT® HCN has several user adjustable features in the USER
MENU. These include:
Printing session, calibration, Bar Hole Test logs and
accessing Smart-Cal Automatic Calibration Station.
Calibrate HCN and/or CO and access Smart-Cal
Automatic Calibration Station.
Set the automatic shut off timer in minutes.
Set date and time.
Display last calibration of all gasses.
Display saved gas reading data with date
and time.
Perform automatic test for response to minimum
of 80% of calibrated gas value within 45 seconds.
Access automatic calibration station.
O2 TEST
PRINT MENU:
CALIBRATION:
POWER OFF:
SET CLOCK:
SHOW CAL LOG:
SHOW SES LOG:
BUMP TEST:
SMART-CAL:
O2 TEST:
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USER MENU OPERATION
PRINT MENU
From the working display access the menu by pressing and holding the
MENU (B) button until the top line of the display reads USER MENU.
The bottom line will read PRINT MENU. Press the MENU (B) button to
access the PRINT MENU options. Use the SAVE/ZERO (C) button to
select the CAL LOG or SESSION LOG option.
At this time prepare the printer. Aim the IR LED on the right side of the
instrument to the IR receptor on the printer.
Press the MENU (B) button to print the data. Pressing the POWER/
MUTE (A) button will reenter the USER MENU.
Use the SAVE/ZERO (C) button at this time to scroll to another menu
function as indicated by the top line reading USER MENU.
Pressing the POWER/MUTE (A) button will return the instrument to the
working (gas readings) display.
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USER MENU OPERATION
POWER OFF
From the working display access the menu by pressing and holding the
MENU (B) button until the top line of the display reads USER MENU.
Press and release the SAVE/ZERO (C) button until the bottom line
displays POWER OFF. Press the MENU (B) button.
Use the SAVE/ZERO (C) button to increase the number of minutes of
run time and the MENU (B) button to reduce them.
Setting the timer to 0 will cause the unit to always remain on. After
adjusting the number, press and release the POWER/MUTE (A) button
to save the adjustment.
Use the SAVE/ZERO (C) button at this time to scroll to another menu
function as indicated by the top line reading USER MENU.
Pressing the POWER/MUTE (A) button will return the instrument to the
working (gas readings) display.
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USER MENU OPERATION
SET CLOCK
From the working display access the menu by pressing and holding the
MENU (B) button until the top line of the display reads USER MENU.
Press and release the SAVE/ZERO (C) button until the bottom line
displays SET CLOCK. Press the MENU (B) button. The day will ash
upon entering the SET CLOCK option.
The SAVE/ZERO (C) button advances to the next item and the MENU
(B) button changes the ashing item. All settings are based on US time
and date settings using a 24 hour clock.
After adjusting all numbers press and release the POWER/MUTE (A)
button to save the adjustment.
Use the SAVE/ZERO (C) button to scroll to another menu function as
indicated by the top line reading USER MENU.
Pressing the POWER/MUTE (A) button will return the instrument to the
working (gas readings) display.
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USER MENU OPERATION
SHOW A CALIBRATION LOG
From the working display access the menu by pressing and holding the
POWER/MUTE (A) button until the top line of the display reads USER MENU.
Press and release the SAVE/ZERO (C) button until the bottom line
displays SHOW CAL LOG. Press the MENU (B) button.
At this time one of the gases and the last calibration date will be displayed.
Use the SAVE/ZERO (C) button to review all other calibrations dates
and their respective gases.
After review of the last available gas the instrument will automatically
return to the user menu as indicated by the top line reading USER
MENU. Pressing the POWER/MUTE (A) button will return the instrument
to the working (gas readings) display.
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