Detcon 700 Series Remote Sensor/Alarm Relay Module With H Manuel d'utilisateur télécharger pdf (Page 17)

700 HART-RAM I.M.

Primary Variables

• Concentration – the value of the gas concentration measured by the sensor. The units of

measurement (ppm, ppb, or %) are shown to the right of the concentration value. This is the HART

primary variable.

• Loop Current – the value of the output 4-20mA loop current

• PV %rnge – Primary variable percent of range

• EngUnits – the measurement units and gas type

Range Variables

• PV LRV – Primary variable lower range value (normally 0 for most sensors)

• PV URV – Primary variable upper range value, or the range of the sensor (i.e. 100ppm, 10ppm, 5%,

etc.)

Device Status

• Indicates the device has more status information available. If this icon is green, no additional status

information is available. If it is red, refer to Section 6.2 Diagnostics for more information.

Measured Values

• Concentration – the value of the gas concentration measured by the sensor. The units of

measurement (ppm, ppb, or %) are shown to the right of the concentration value

• Temperature – displayed in degrees Centigrade.

• PS Voltage – power supply voltage. Nominally 24VDC

PV – Graphic display

A graphic display of the sensor concentration reading may also be displayed in this screen. The graph will be

a graphic display of concentration verses time.

6.1.2 Identification

The Identification screen contains 4 sections that provide some basic HART information as well as some

additional sensor information. None of these variables are able to be changed in this screen, although some

of these variables may be changed elsewhere.

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Detcon 700 Series Remote Sensor/Alarm Relay Module With H Manuel d'utilisateur Page 17