Toxalert Tox-NH3/ANA Calibration Procedures

Brand
Toxalert
Model
Tox-NH3/ANA
Type
Calibration Procedures
CALIBRATION PROCEDURE FOR TOX-NH3/ANA SENSOR
Frequency of Calibration
The manufacturer recommends that the gas
sensor module be calibrated every 90 days.
Calibration Process
The output signal of the gas sensor module
is calibrated using a span mixture containing
a known concentration of the gas of interest.
The concentration of the span gas should be
between the high alarm point and full scale.
Calibration requires application of the span
gas to the sensor and adjustment of the
SPAN potentiometer to make the module
signal output equivalent to the concentration
of the sample gas.
Equipment Required
The following tools and equipment will be
required for calibration:
- Jewelers Screwdriver
- Calibration Gas
- Digital Volt Meter (DVM) 3½ digit
- Calibration Adapter 5358-01
Calibration Procedure
To begin calibration remove the cover from
the Module enclosure, and proceed
according to the instructions below:
1 Connect a DVM to the sensors ground
(GND) and Signal Out test jacks.
2 Install the Calibration Adapter into the
bottom of the sensor.
3 Apply the Span Calibration Gas, 50
PPM ammonia, at a minimum flow rate of
.3LPM.
4 Allow 5 minutes before making any
adjustments.
5 If necessary adjust the SPAN pot so that
the DVM attached to the SIGNAL output
displays 2.0 volts.
6 Apply the Air Zero Calibration Gas at a
minimum flow rate of .3LPM.
7 Allow 5 minutes before making any
adjustments.
8 If necessary adjust the ZERO pot so that
the DVM attached to the signal output
displays 0.0 volts +/- 0.1volts.
Toxalert International, Inc. P.O. Box 159 Mound, MN 55364 • 952-472-4541 • 952-472-4960
View our website @ www.toxalert.com
  • Page 1 1

Toxalert Tox-NH3/ANA Calibration Procedures

Brand
Toxalert
Model
Tox-NH3/ANA
Type
Calibration Procedures
Download PDF
report

Ask a question and I''ll find the answer in the document

Finding information in a document is now easier with AI

Related papers

Other documents