Honeywell Impact Series User Manual

Impact / Impact Pro / Impact Pro IR Operating Instructions
66
Special Notes for IR Sensors
The Impact Pro IR offers many benefits that enable the user to achieve drift-free
operation and longer-term stability, when compared with catalytic bead (pellistor)
or photo ionization detectors (PID). IR sensors are immune to poisons such as
silicones that can contaminate Catalytic sensor types. IR sensors can detect
hydrocarbon gas levels in the absence of oxygen (O
2
), which cannot be achieved
with catalytic bead sensors. Typical applications would be to measure hydrocarbon
gases under nitrogen storage blankets or other inert atmospheres. IR sensors
generally enable users to achieve their application requirements with an overall
lower cost of ownership
There are three (3) types of infrared sensor that can be fitted; two for flammable
gas (%LEL and %Vol options), and the third for Carbon Dioxide (CO
2
). Only one
IR sensor can be installed per cartridge. Both IR flammable sensors are calibrated
for methane, although they will be sensitive to many hydrocarbon gases. Please
note the following:
Hydrogen (H
2
) cannot be detected using the IR principle.
By default, no alarms are provided for the 0-100%/Volume IR sensor. The user can
setup alarm levels via the ICU software.
WARNING
All IR sensor cartridges requireamodiedImpact ProIRcartridgebay,which
isdesignatedasmodicationstate15.Ifnotpresent,thismodicationmustbe
performed by your authorized Honeywell Analytics Service Center. Failure to do
this may lead to physical damage when attempting to insert the new IR sensor
cartridge and will not be covered by warranty.
CAUTION
Infraredsensorsforammablegasescannotdetecthydrogen(H
2
). If the environment
is suspected of containing combustible levels of hydrogen, a cartridge that uses a
standard catalytic bead sensor should be used with the Impact Pro instead.
CAUTION
Any electrochemical sensors in this cartridge cannot operate accurately in oxygen
decientenvironmentsandshouldnotbeusedforcontinuousmonitoringininert
atmospheres.
Compatibility
The settings for the new IR sensor are stored in the smart cartridge. Those i)
cartridges that house the new IR sensors have a slightly modified internal
arrangement. Existing Impact Pro models will need to be returned to an
approved service center to make sure the firmware is current and to get
updated certification and notification labels applied. In addition, earlier models
of Impact Pro will have to have modification of the cartridge-mounting boss.
New Impact Pro IR units ordered will be configured with the appropriate
labelling prior to shipment (see part numbers below). Contact your approved
Honeywell Analytics Service Center for full details of this modification.
2302B20009UE - Impact Pro IR version, certified UL/CSA only
2302B10009BER - Impact Pro IR version, certified ATEX only
The flammable (%LEL or %V/V) IR sensors are factory calibrated to respond ii)

Honeywell Impact Series Specifications

General

Brand	Honeywell
Model	Impact Series
Category	Battery Charger
Language	English