Table 11 - Et Diagnostics - Honeywell SLG 700 User Manual

Max ET Parameter
Limit
ET Method
USL(upper
stress limit)
Max ET Parameter
Value
Time Above Parameter
USL (Upper
Stress
Limit)
Last ET up Method
details
(Time Since
Last ET Up)
Min ET Parameter
Limit
ET LSL Method
(Lower
Limit for
Stress
Condition)
Min ET Parameter
Value
Time Below Parameter
LSL (Lower
Stress
Limit)
Last ET Method
Down
Details
(Time Since
Last ET
Down)
Page 54

Table 11 - ET Diagnostics

Description Electronics Temperature (ET) upper operating limit from
specification. Value is in user specified temperature units.
Set-up None.
Actual limit used in "Time Above Limit" and "Time Since Last
Description
Event". Value is equal to "Max ET Limit" less 10% of limits
range.
Example
Electronics Temperature range is -40F to 185F for a total of
225F.
"ET Upper Stress Limit"= 185F - 10% of 225F = 162.5F.
None – calculation is automatic.
Set-up
Description Highest Electronics Temperature ever experienced by the
device. Value is in user specified temperature units,
Set-up None.
NVM Update every 8 hour.
Accumulation of minutes that device's Electronics
Description
Temperature has been above the value of "ET Upper Stress
Limit".
Set-up None.
NVM Backup once each 8 hour period
Time that has passed since the last time device's Electronics
Description
Temperature has passed above the value of "ET Upper
Stress Limit" (in days, hours and minutes).
Set-up None.
NVM Backup once each 8 hour period
Description Electronics Temperature (ET) lower operating limit from
specification. Value is in user specified temperature units.
Set-up None.
Actual limit used in "Time Below Limit" and "Time Since Last
Description
Event". Value is equal to "Min ET Limit" plus 10% of limits
range.
Example
Electronics Temperature range is -40C to 85C for a total of
125C.
"ET Lower Stress Limit" -40C + 10% of 125C = -27.5C.
None – calculation is automatic.
Set-up
Description Lowest Electronics Temperature ever experienced by the
device. Value is in user specified temperature units.
Set-up None.
NVM Update every 8 hour.
Accumulation of minutes that device's Electronics
Description
Temperature has been below the value of "ET Lower Stress
Limit".
Set-up None.
NVM Backup once each 8 hour period
Time that has passed since the last time device's Electronics
Description
Temperature has passed below the value of "ET Lower
Stress Limit" (in days, hours, and minutes).
Set-up None.
NVM Backup once each 8 hour period
SLG 700 Series HART Option User's Manual
Revision 5