YOKOGAWA DPharp EJXC40A, Руководство пользователя

Страница: 102 / 150

<7. HART Communication>
7-49
IM 01C25W05-01EN
7.3.2.3.1 Flg temp coef Setting
The value calculated according to the following
procedure is set to Flg temp coef.
• To improve the calculation accuracy of
the flange temperature, the actual flange
temperature is measured using a temperature
sensor or the like.
• Obtain the capsule temperature and amplifier
temperature measured with the transmitter.
• Using the measured flange and the ratio
obtained by the above formula, calculate Flg
Temp Coef using the following formula.
(Actual measured value of flange temperature) – CT
CT - AT
=
Flg Temp Coef (Cf)
In the case of DTM, the tuning function can be used
to set Flg temp coef.
Enter the measured flange temperature to calculate
Flg temp coef using the capsule temperature
and amplifier temperature measured with the
transmitter.
• Recalling tuning
Hotkey → ILBD → Advanced Diag
Configuration→ Heat Trace → Tuning
7.3.2.3.2 Alarm Generation
Alerts and alarms can be generated when the
flange temperature goes outside the preset
measuring range.
For the procedure to set alerts and alarms, see
subsection 4.2.2.5.
The measuring range is set by specifying the upper
limit (Flg temp Hi alert val) and lower limit (Flg temp
Lo alert val). They can be set in the range of –50 to
130°C.
Flange temperature
(Flg temp)
F0723.ai
Time
Low temperature
error alarm
High temperature
error alarm
Flg temp Hi alert
Flg temp Lo alert