A.3

Smart Meter Specifications

 

 

 

Operating Conditions

 

 

 

 

 

 

 

Before installing a transmitter equipped with a smart meter or installing

 

and Specifications

 

the smart meter in an existing transmitter, please note the specifications

 

 

 

 

and operating limits of the meter in Table A-2.

 

Table A-2

Smart Meter Specifications.

 

 

 

 

 

 

 

 

 

 

Operating Conditions

—————

 

 

 

 

 

 

 

 

 

 

 

 

 

Parameter

 

 

 

 

Rated

 

Extreme, Transportation and

 

 

 

 

 

 

 

 

 

Storage (See below)

 

 

 

 

 

 

 

 

 

 

Ambient Temperature

 

°F

 

–40 to 176

 

 

–58 to 194

 

 

 

 

°C

 

–40 to 80

 

 

–50 to 90

 

 

 

 

 

 

 

 

 

 

Relative Humidity

 

%RH

 

10 to 90

 

 

0 to 100

 

 

 

 

 

 

 

 

Design ———————————

 

 

 

 

 

 

 

 

 

 

 

 

 

Accuracy

 

 

 

 

No error. Reproduces transmitter signal exactly within its resolution.

 

 

 

 

 

 

 

 

Display Resolution

Bargraph

 

±3% of reading

 

Shown as:

 

 

Digital Readout

 

±0.005 for ±19.99 reading range,

 

19.99

 

 

 

 

 

 

±0.05 for ±199.9 reading range,

 

199.9

 

 

 

 

 

 

±0.5 for ±1999 reading range,

 

1999

 

 

 

 

 

 

±5 for ±19990 reading range,

 

19.99 K

 

 

 

 

 

 

±50 for ±199900 reading range,

 

199.9 K

 

 

 

 

 

 

±500 for ±1999000 reading range,

 

1999 K

 

 

 

 

 

 

±5000 for ±19990000 reading range.

 

19990 K

 

 

 

 

 

 

 

 

 

Display Update Rate

 

 

 

Above 32°F (0°C): ½ second

 

 

 

 

 

 

 

 

@ or below 32°F (0°C): 1½ seconds

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Meter Display at High

and Low Temperature

Extremes

The rated temperature limits for the meter are listed above and are true in that no damage to the meter will occur over these temperatures, however the readability of the LCD is affected if taken to these temperature extremes:

•The LCD will turn black at some temperature between 80 to 90 °C (176 and 194 °F), rendering the display unreadable. This effect is only temporary, and normally occurs at 90 °C (194 °F).

•At low temperatures, the update rate of the display is lengthened to 1.5 seconds due to the slower response time of the display.

At -20 °C (-4 °F) the display becomes unreadable due to slow response of the LCD. This is also only temporary and normal readability will return when temperature returns above -20 °C (-4 °F).

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ST 3000 Release 300 Installation Guide

53