The Steri-Trac® monitor is designed to operate as a stand alone instrument, but it is also designed to serve as a part
of an integrated monitoring system. Up to eight Steri-Trac monitors can be connected to a central data acquisition
computer (DAQ), and each Steri-Trac monitor can support up to three remote displays. The system has been designed to
be fail safe, so that in the unlikely event that one component were to fail, the rest of the system will continue to
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For Steri-Trac 1 area monitors please ensure that you have the correct gas type sensor
installed in the area monitor (
Hydrogen Peroxide sensor [blue ring] instead of Ethylene Oxide [orange ring], etc.). This is
especially important for
intrinsically safe ethylene oxide sensors as they will not read in a standard ethylene oxide
If you are using a remote sensor module please check that the wiring is in tact to the area
monitor. A break or
disconnection in the wiring will cause the sensor read error.
An error code of 0101, 0102, 0104, etc. means that there is a fault with the area monitor
hardware. Please take note of
when the error occurred and the conditions in the monitoring area when the error occurred and
contact Technical Services
for further assistance.
When the area monitor reads an error code of 0001, 0002, 0003, etc. this typically indicates a
potential fault in the
sensor hardware. If the sensor has just been exchanged there may be no defect in the sensor but
if a delay between the
time the sensor was shipped and the time it gets installed on the area monitor exceeds 1 week,
the battery maintaining
sensor bias may be depleted causing the sensor to read high, low or cause the monitor to display
a “000x” error code.
Before contacting Technical Services, plug the sensor into the area monitor and leave it
attached for up to 90 minutes
and monitor the readings. After a few minutes the monitor’s readings should start to normalize
and they should return to
a zero or near-zero state within the timeframe. After the readings have stabilized then the area
monitor can be zeroed
with the new sensor with no effect on the sensor’s calibration or accuracy. If after a period of
90 minutes the sensor
has not begin to re-establish its zero point then contact Technical Services.
The common error codes and their meanings are:
0001 – Sensor Type Mismatch: the wrong type of sensor was plugged into the area monitor,
i.e. a hydrogen peroxide sensor
was accidentally plugged into an ethylene oxide monitor. If this occurs it will not damage
the sensor and the sensor
will work correctly when installed into the proper monitor.
0002 – Under Range: the sensor’s reading values are negative. This is typically the result
of a sensor sitting too long
before being exchanged or the presence of an interfering gas. If the sensor was just
exchanged and an 0002 error is
displayed, allow the sensor to stay on the monitor for up to 90 minutes so that the sensor
can return to its biased
state. During this time the sensor should return to zero or near zero and the readings will
stabilize. Once the readings
are stable then it is recommended to zero the monitor.
0003 – Over Range: just as the sensor can read under range it can read over range for the
same reasons: discharged bias
battery or presence of gas. Follow the same procedure for under range readings and allow a
recently exchanged sensor to
return to its biased state. If the monitor has not recently had a sensor exchange and has
been in normal operation,
verify the possibility of gas exposure and follow your department’s safety protocols.
If the button on the monitor no longer functions to silence alarms or allow you to scroll through
the alarm settings or
zeroing function please contact Technical Services for assistance.
Check to ensure that the monitor is plugged in and that the power outlet is live using a
desk lamp or other AC-powered
device. If the monitor’s wall box is wired direct then verify that the circuit breaker is
not tripped or switched off.
If the wall box is plugged into a Uninterruptable Power Supply (UPS) or surge suppressor
power strip please verify that
the UPS/power strip is turned on, plugged in and that any built-in circuit breakers are not
f you are certain that the power to the area monitor is on and correct, please contact
Technical Services for
This indicates a power supply failure in the area monitor. Please contact Technical Services for