PureAire TX-KE, Инструкция по эксплуатации

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PureAire Monitoring Systems, Inc. 2/22/2000
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4: Normal Operation
Model TX-KE and TX-KP gas detectors are designed for use with a PureAire
controller or other control system capable of receiving a 4-20 mA signal.
During normal operation, the instrument will display the measured gas
concentration on its local analog or digital readout and output a corresponding
4-20 mA analog signal.
4.1 Concentration Display and Power Indicator Lamp
NOTE: The following applies to both the Model TX-KE and Model TX-KP.
4.1.1 Concentration Display
This is a real time display of the measured concentration of the target gas. The
target gas and units of measure (PPM, PPB, etc.) are indicated on the front of the
instrument.
4.1.1 Power LED
This LED is lit when the instrument is operating properly. It will get brighter as
the measured gas concentration increases.
4.2 Routine Maintenance Schedule
Continuous gas detection systems depended upon to measure and detect
hazardous gas leaks require periodic maintenance to ensure proper operation. The
frequency with which this routine maintenance is required depends on the
environment, since temperature, humidity, gas concentrations, and dust all affect
system operation.
The following table is intended to serve as a general guideline for routine
maintenance. The conditions in your particular application, as well as your
organization’s maintenance policies, will ultimately determine the best routine
maintenance schedule for your equipment.
4.2.1 Routine Visual Checks
Items to check Check for power and proper operation
Condition / status when
operating properly Should read “0” when no gas is present; analog
output signal at 4 mA.
Corrective actions If meter reads higher than “0” in a zero gas
condition, adjust as required to the environment