Extractive Module Xt - Option; Principle Of Operation; General Instructions; Safety Instructions - Honeywell Satellite XT 9602-0200 4-20 mA Operation Manual

9.1

Principle of Operation

The Extractive Module XT is an add-on module for use in combination with the
Satellite XT. It enables for keeping hazardous, difficult to reach, or otherwise inaccessible
areas under continuous surveillance. It is capable of sampling areas up to 50 m away.
Power is supplied via the Satellite XT. Status information is provided by the Satellite XT
that provides the digital interface as well.
The module contains a diagnosis for electronics and pump. The correct gas flow is factory
set and saved in the instrument. If there is a problem with the Extractive Module XT, the
display of the Satellite XT shows the fault message FAULT EXTRACTIVE. For information
on fault messages and instructions on how to correct a fault condition, please refer to
Section 7, Troubleshooting.
9.2

General Instructions

Listed hereafter several aspects that should be reflected when locating monitoring point
and instrument. When placing the sampling point , the property (lighter or heavier than air)
of the target gas must be considered. The instrument should be mounted as close to the
monitoring location as possible to minimize sample transport time. The area immediately
surrounding the sample inlet at the monitoring point must be free from objects that might
hinder free flow of air. The instrument should be installed away from any possible liquid
sources, extreme dust and dirt sources and should be protected against rain and sunlight.
The sample line should be run as direct as possible to improve transport time. Avoid
running the sample line through areas of great temperature extremes. The sample outlet
must be connected to an exhaust line and must be properly vented. Both, sample and
exhaust tubing must not be crimped or placed in an area where weight could collapse the
tubing.
Dust may be a result of construction as well as manufacturing activities. If unusual
quantities of dust are expected at the monitoring location, an appropriate filter for the
sample line must be installed. The use of a dust filter depends on the target gas, refer to
the table Sensor Order Information in Section 8, Reference Information, or contact our
service department.
As excess amounts of dirt in the filters will reduce the sample flow and will thus affect con
centration readings of the instrument, make sure to regularly change sample line filters
(every 1 to 6 months, depending on the ambient conditions). For order information refer to
Section 8, Reference Information, Spares and Accessories.
Moisture may occur as rain entering a line at an outdoor sampling location or as
condensation from outdoor-to-indoor temperature fluctuations. In case of unusual
quantities of moisture, appropriate steps must be taken to protect the instrument; consult
us for respective assistance.
9.3

Safety Instructions

Never use compressed air to clean the tubing while it is connected to the instrument.
Use isopropanol and a soft cloth to clean the housing. Do not use any aggressive
detergents.
! Note:
To extend an existing Satellite XT to an extractive system, please contact our service
department. This modification makes it necessary to open the housing of the Satellite XT,
which is only allowed for authorized persons.
Satellite XT 4-20 mA Versions
Extractive Module XT - Section 9
9-1