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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CONTENTS
Preparation
For Your Safety .............................................................. ii
Contents .................................................................... 3-4
Parts and Accessories ...................................................5
General Description .......................................................6
Product Specications ...................................................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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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
7
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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