Instruction Manual


7-101
IM 01R04B04-00E-E 8th edition March 01, 2011 -00
All Rights Reserved. Copyright © 2003, Rota Yokogawa


Not available if gas measurement
(option /GA) is ordered
Detection of empty pipe
After  has been reached, alarm
output is activated if selected.
This function can also be used to detect tube failure
(see chapter 8.8).
 Select: 
 Set density value as criteria when empty pipe alarm
should happen. If  is smaller than
(or LRV, whichever is higher), alarm
appears if density is lower than .
If t is equal or greater than 
(or LRV, whichever is higher), alarm appears if
density is higher than
 Select the behaviour of the outputs after empty pipe
has happened.
Select: 
With this function the outputs can be set to zero if the
detector runs empty during maintenance. It is also
useful for batching if the batch starts with an empty
pipe. In such case please install the detector vertically.
Gas application?
Yes No
Empty pipe alm sel = Apply?
Yes No
Empty pipe crit < Density URV?
(or LRV, whichever is higher)
Empty pipe crit ≥ Density URV?
(or LRV, whichever is higher)
Yes No Yes No
Empty pipe OFF
Alarm off
Empty pipe
ON
Alarm On
if density <
empty pipe crit
Outputs either
Measured
Value, Hold or
4mA/0Hz
Empty pipe
OFF
Alarm off
Empty pipe
ON
Alarm On
if density ≥
empty pipe crit
Outputs either
Measured
Value, Hold or
4mA/0Hz
Empty pipe
OFF
Alarm off
Empty pipe
OFF
Alarm off