Overview; Methods Of Sampling; Sensors; Toxipro Sensor Ranges - Honeywell ToxiPro CO Reference Manual

1.

Overview

The ToxiPro is a single sensor gas detector that can be
configured to detect either oxygen (O
variety of toxic gases. The ToxiPro's sensor type is
shown on the front of the instrument and is also shown
on the display during the start up sequence. The
ToxiPro includes numerous features designed to meet
specific user requirements.
1.1

Methods of sampling

The ToxiPro may be used in diffusion mode, or with the
manual sample draw kit that is available separately. In
either mode, the atmosphere must reach the sensor for
the instrument to register a reading. In diffusion mode,
the atmosphere reaches the sensor by diffusing through
the sensor port on the front of the instrument. Normal air
movements are enough to carry the sample to the
sensor. During remote sampling, the gas sample is
drawn into the sensor compartment through the probe
assembly and a length of tubing.
See section 2.9 for more details on sampling the
atmosphere.
1.2

Sensors

All versions of the ToxiPro except the O
electrochemical toxic gas sensor. The ToxiPro O
a galvanic oxygen sensor. Both types of sensor have
been designed to minimize the effects of common
interfering gases. These sensors provide accurate,
dependable readings for gases commonly encountered
in industrial applications.
A sensor cross sensitivity chart is provided in Appendix
A at the back of this manual.
1.2.1

ToxiPro sensor ranges

Specific toxic sensor ranges and resolutions are
provided in the sensor replacement chart in Appendix B.
1.2.2 ToxiPro O
The oxygen sensor used in the ToxiPro O
of 0-30% by volume.
1.2.3 ToxiPro O
The ToxiPro O requires a one-time, 15-minute warm-up
2
phase prior to initial activation. See section 2.1 for
further details.
1.3

Alarm and warning logic

1.3.1

Gas alarms

ToxiPro gas alarms are user-adjustable and may be set
anywhere within the range of the specific sensor. When
an alarm set point is exceeded a loud audible alarm
sounds. In the warning state the LED's will flash, yellow.
In the danger state the LED's will flash, red.
Two oxygen alarm set points have been provided for
ToxiPro O instruments. The danger alarm is sounded
2
for oxygen deficiency and the warning alarm is sounded
for oxygen enrichment.
ToxiPro instruments equipped with a toxic gas sensor
have up to four alarm set points: Warning, Danger,
) or one of a
2
model use an
2
sensor ranges
2
has a range
2
warm-up phase
2
Custom, TWA (Time Weighted Average) (if enabled) and
STEL (Short Term Exposure Limit) (if enabled).
The custom alarm level can be set to a level greater
than/equal to the danger alarm level for toxic sensors
and less than/equal to danger level for oxygen sensors
using the IQ System software. The custom alarm is a
latching alarm. The custom alarm looks and sounds
similar to the DANGER alarm but, with the warning
symbol turned on and the DANGER icon not being set. If
the custom alarm level has been reached then the alarm
can only be silenced by putting the instrument in the
dock (successful IrDA connection) or successful
connection to BioTrak. If the custom alarm value is zero
then the custom alarm is disabled and "OFF" will appear
on the instrument's LCD during the startup sequence. If
the danger alarm has been disabled then the custom
alarm is also disabled.
Note: In the standard ToxiPro configuration with
toxic gas sensors, the STEL and TWA alarms are not
enabled. The STEL and TWA alarms may be enabled
at the factory or through BioTrak software. Call
Honeywell Analytics for more details.
1.3.2
The ToxiPro includes bump test and calibration due
uses
notices.
2
For more information on the calibration due notices,
see section 2.4 below.
1.3.3
If a new battery has been installed or the existing battery
was removed and replaced the ToxiPro will show "F 0"
on the display and will beep 6 times upon startup. It will
then go into the set time/date mode.
1.3.4
The ToxiPro is designed with two battery warning alarms
that are activated when the battery voltage is reduced to
specific levels.
For more details on the battery alarm, see
section 2.5 below.
1.3.5
sensor during startup, it will show "F 1" with the caution
symbol and then shut itself off. For more details, see
section 2.1.
9
Calibration and bump test due
notices

Battery replacement Warning

Low battery alarms

Missing sensor during startup

If the ToxiPro fails to detect a