Operation; Power-Up; Test Toxypoint Calibration - Honeywell IAQPoint2 User Manual

Operation

Using the Sensor
Using the Sensor
The ToxyPoint is factory calibrated and ready to use. There is no
calibration to perform nor are there any necessary steps beyond
powering up the sensor. The sensor is also equipped with a plastic
sensor screen to protect it from tampering.

Power-up

When power is applied the monitor sets the operational life clock and
then performs the full function sensor integrity self-test.
If the monitor passes the self-test, the sensor will stabilize in under 30
seconds. Upon a successful self-test, the status red LED will light and
the transmitter will send a 4-20mA current output to the controller
equivalent to the ppm level measured by the monitor. Instructions
describing what to do in the event of a self-test failure appear in the
"Self-Test Fail" section.

Test ToxyPoint Calibration

Follow the procedures and recommendations in the Control System
manual to calibrate the Control system:
• 4 mA = Zero
• 20 mA = full scale
To ensure proper operation, test with appropriate calibration gas
cylinder. Apply a known concentration of quality test gas to the
ToxyPoint sensor for 2 minutes to allow the sensor response to
stabilize. The control system should read the same as the ppm of the
gas being applied.
Resolution:
Note: Allow a ±3% tolerance in some cases due to sensor repeatability.
The ToxyPoint is now ready for use.
20
Operation
2 ppm < @ 0-250 ppm
4 ppm < @ 250-500 ppm
ToxyPoint User Manual
Honeywell
511407
6/07