 |
 |
The old company name and logo may still be indicated on products, printed materials or web site published before its change. Those shall be read as the new ones.
|
| 030039 | Is there a way to protect electronic instruments
from a direct lightning strike? [ HTML ] [ MS Word  116k ] |
| 030040 | A remote field transmitter connected to a local
indicator which is protected by a lightning surge protector begins to show
inconsistent display values. What could be the trouble? [ HTML ] [ MS Word 80k ] |
| 030041 | A control room instrument was damaged during
a recent lightning strike. What can be done to prevent this damage in the
future? [ HTML ] [ MS Word 116k ] |
| 030042 | A transmitter that is attached to a panel located
indoors was damaged by a recent lightning strike. Can you explain why this
occurred? [ HTML ] [ MS Word 132k ] |
| 030043 | Is a lightning surge protector necessary for
a power source line? [ HTML ] [ MS Word 116k ] |
| 030044 | During a recent lightning storm, the power
was turned off but some instruments were still damaged. Can you explain
this? [ HTML ] [ MS Word 132k ] |
| 030045 | An instrument was blackened by a lightning
strike via a lightning rod. Is there a reason for this? [ HTML ] [ MS Word 124k ] |
| 030046 | It has been said that if you use buried cables,
then that is enough protection from lightning. Is this a true statement? [ HTML ] [ MS Word 112k ] |
| 030047 | How much resistance is appropriate when grounding
the M-RESTER? [ HTML ] [ MS Word 140k ] |
| 030048 | Is an instrument safe if the lightning surge
protector on the power supply line is damaged? [ HTML ] [ MS Word 140k ] |
 |
| 030049 | A field transmitter was connected
to a lightning surge protector, but it was still damaged by a lightning
strike. Can you tell me why? [ HTML ] [ MS Word 104k ] |
| 030050 | After a lightning storm, there was no input
from the remote RTD sensor to the temperature transmitter. There is no detectable
damage to the transmitter. What could have happened? [ HTML ] [ MS Word 124k ] |
| 032010 | Use a Watchdog for Troubled
Spots [ HTML ] [ MS Word 56k ] |
| 032011 | M-Rester Application in Waterworks [ HTML ] [ MS Word 104k ] |
| 032077 | We are using universal input
transmitter, M3LU with 4-wire RTD sensor. We’d like to install lightning surge protector for this system. Does M-System have any lightning protector for 4-wire RTD sensor signal use? [ HTML ] [ MS Word 192k ] |
| 032105 | We plan to install a surge protector on the
relay output circuit from the host PLC. The load of this relay output is an electromagnetic valve. We have an experience that we installed M-System Surge Protector, model MDP-24-1 but available load current for the MDP-24-1 is up to 100 mA. We are looking for a surge protector for the above usage with load current 0.5 A. Does M-System have a suitable one? [ HTML ] [ MS Word 167k ] |
| 032132 | We are going to install 4
units of 2-wire pressure transmitters at field. We plan to use single DC power supply for these multiple transmitters with parallel connection. We will install lightning surge protectors to protect each signal line. If one of the protectors fails as short circuit mode, it could cause power shutdown and stop supplying power not only to the failure loop but also to all other transmitters. We need to avoid this situation by any means. Does M-System have any solution? [ HTML ] [ MS Word 136k ] |
| 032143 | In our factory, there are communication devices,
which communicate each other via RS-485 full duplex cable. We’d like
to install a surge protector for protecting the devices from lightning surge.
We know M-System lightning surge protector, model MDP-4R but it is used
for RS-485 half duplex cable. Do we need to install 2 pieces of MDP-4R on the full duplex RS-485 line? [ HTML ] [ MS Word 192k ] |
| 032144 | We make a temperature measurement of high precision
with 4-wire RTD sensor. Since we know M-System universal type transmitter, model M3LU is applicable to 4-wire RTD sensor, we use this model for the measurement. We also like to install a lightning surge protector but can not find a suitable one for 4-wire RTD. I’m aware that M-System lightning surge protector, model MDP-RB is used for 3-wire RTD but can we protect 4-wire RTD line with multiple units of the MDP-RB? [ HTML ] [ MS Word 120k ] |
|
|