Bacharach 3015-4790, Инструкция

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N
2
O Portable Monitor Operation
Instruction 3015-4787 17
3.13.3 First Diagnostic Screen
In the
First Diagnostic screen, the user can toggle between displaying Bench Voltage / Detector
Temperature, and Noise / Box Temperature by pressing the Keypad Right button.
Bench Voltage – This is the current peak-to-peak output of the IR detector. In the absence of gas this
value can range from 3.90000V to 4.50000V.
Noise – The Noise value is a 16 point running average of the noise portion of the IR detector’s output. This
reading is valuable mainly when gas is NOT present.
Detector Temperature – This is the current detector temperature in °C.
Box Temperature – This is the current internal enclosure temperature in °C.
Fault Code – Current fault code. A value of <0000> indicates that no faults are being detected.
Pressure Reading – This is the pressure as measured every purge cycle with the sample pump off and
the gas-sample inlet open. Its value is weather and altitude dependent and can range from 10.0 to
15.5 PSIA.
Purge Valve Asterisk (
∗
) – The purge valve can be opened and closed by pressing the Keypad Left
button. An asterisk appears on the display when the purge valve is open causing the monitor to draw air
from its purge-air port.
3.13.4 Second Diagnostic Screen
PPM Level – Parts Per Million Level is the current detected gas level, and is the volume concentration
referenced to standard temperature and pressure.
Average Absorption Unit – This is the optical absorbency. In the absence of gas the absorbency is
0.00000 au. When sampling gas, its value varies proportionally with the gas concentration.
µMoles/Liter – This is the absolute concentration in micro-moles per liter of gas.
Detector Voltage – This is a running average of the IR detector’s bench voltage.
Purge Valve Asterisk (
∗
) – The purge valve can be opened and closed by pressing the Keypad Left
button. An asterisk appears on the display when the purge valve is open causing the monitor to draw air
from its purge-air port.
0.1ppm 0.01
0.00004au 4.210v
PPM Level µMole/Liter
Avg. Absorption Unit
∗
Detector Voltage
4.20885v <0000>
29.05cD 14.58psi
Bench Voltage Fault Code
Detector Temperature °C
∗
Pressure Reading
0.00075n <0000>
35.40cB 14.59psi
Noise Fault Code
Box Temperature °C
∗
Pressure Reading