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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.
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| 030001 | What's the isolator unit
used for? [ HTML ] [ MS Word  176k ] |
| 030002 | Our system consists of various manufacturers'
instruments, and sometime we meet errors of unknown origin. Each manufacturer
of the system says their part of system has no problem. Any idea ? [ HTML ] [ MS Word 112k ] |
| 030003 | Can you tell us how to minimize a destruction
of instruments at control room site caused by a field instrument trouble? [ HTML ] [ MS Word 80k ] |
| 030004 | It is said that the grounding at two locations
would cause errors. Why? How can I handle the problem? [ HTML ] [ MS Word 96k ] |
| 030005 | At start up of our control system, we can detect
signal influences between different instruments. Is there a simple solution
for this? [ HTML ] [ MS Word 96k ] |
| 030006 | The output signal response decreases after
installing an isolator unit into a loop for data-logging of vibration analysis.
Any solution ? [ HTML ] [ MS Word 80k ] |
| 030007 | We have a requirement for a contact signal
from the field to be input into a computer. Can M-System's Model M2SV handle
this? [ HTML ] [ MS Word 80k ] |
| 030008 | Can we use a loop power supply unit as an isolator
unit having 4 - 20mA DC as the input signal? [ HTML ] [ MS Word 80k ] |
| 031001 | I want to convert the difference
(absolute value) of 2 signals A and B to 4-20mA DC. Please explain the method
and a transmitter to be used. [ HTML ] [ MS Word 120k] |
| 031002 | I want to transmit instantaneour value (4-20mA
DC) of CT current (0-5A AC) on a power panel in the field to a monitoring
room as well as get a high alarm contact signal. However there is not instrument
power on site and transmitters cannot be installed there. [ HTML ] [ MS Word 124k ] |
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| 031003 | Standard M2VS output is up to 12V, but I need
0-15 Vdc. [ HTML ] [ MS Word 132k ] |
| 031004 | I plan to indicate a flow signal 4-20mADC (corresponding
to 0-2000 l/h) used in a plant on two indicators with different scaling.
The existing indicators are A. 4-20mA DC input with the scale 0-1500 l/h
and B. 0-5V dc input with the scale 0-100 l/h. I want to used them. the
actual flow does not exceed 1000 l/h. can i deal with this with a single
transmitter and adjusting the scaling? [ HTML ] [ MS Word 100k ] |
| 031005 | When tank level of irregular shape is being
measured with the use of a level transmitter, it takes a lot of troubles
to measure the volume of tank. [ HTML ] [ MS Word 104k ] |
| 031006 | Air flow from a blower is being controlled
remotely with a flow setter (angle setter of a damper), which is very difficult
to set the air flow. [ HTML ] [ MS Word 136k ] |
| 031007 | Interface problems with the proliferation of
systems in plants [ HTML ] [ MS Word 88k ] |
| 031008 | PLC product lines with NON-isolated analog
inputs [ HTML ] [ MS Word 84k ] |
| 031009 | An engineering company had specified an analyzer
and a DCS system. During startup they discovered that both devices were
trying to power the loop. Additionally the DCS was providing a common power
supply for multiple loops. [ HTML ] [ MS Word 112k ] |
| 031010 | What is the difference between 2-wire and Loop-powered? [ HTML ] [ MS Word 124k ] |
| 031011 | We want to get 4-20mA DC from a control circuit
to provide the signal to a speed controller. However, one problem is that
there is a difference in electric potential (50 to 100V) between each of
the ground, the control circuit and the speed controller. what can we do
in this case? [ HTML ] [ MS Word 100k ] |
| 031012 | The "master" drive must control four separate
"slave" drives from a single 4-20mA DC signal. [ HTML ] [ MS Word 116k ] |
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| 031013 | How to beat loop impedance
constraints [ HTML ] [ MS Word 152k ] |
| 031014 | Current-to-voltage transducers give strange
output readings. [ HTML ] [ MS Word 60k ] |
| 031015 | Which type of isolators to
choose from? [ HTML ] [ MS Word 496k ] |
| 032057 | "super" SV unit [ HTML ] [ MS Word 56k ] |
| 032068 | To monitor a solar power
system, we measure an output voltage of its system and want to receive an
alarm outputs if the measuring value fell than a set value. We had used
a DC Alarm, model AS4V previously, but this time, the measuring voltage
range is to be 0-1,000Vdc which is not able to input directly to the AS4V.
Additionally, our existing panel room is not so large. Do you have any good idea to solve our problem? [ HTML ] [ MS Word 200k ] |
| 032082 | We have replaced an old, out-of-order pressure
transmitter which outputs 10-50 mAdc. The new one, on the other hand, outputs
4-20 mAdc, so we have also purchased a 4-20 mA current loop supply model
M2DY-A-M to power the transmitter. The only instrument we do not want to replace is the expensive receiving instrument in the control room which is suitable only for 10-50 mA signals, and is still in good working order. We have to find a way to convert 4-20 mA into 10-50 mA signals to maintain the compatibility between the field and the control room. Does M-System have a suitable transmitter for this application? [ HTML ] [ MS Word 336k ] |
| 032083 | We
are preparing UPS in our power monitoring system for system backup purpose
in case of blackout. On a power monitoring panel, we also want to monitor
UPS’s charging condition by using digital indicator. Does M-System
have any transmitter for this application? For your reference, our UPS’s
battery capacity is 12 Vdc at full charging. [ HTML ] [ MS Word 156k ] |
| 032106 | We plan to measure a heavy oil amount of consumption
of an oil tank. A level meter installed in the tank is providing 4-20 mAdc in proportion to 0-100% of oil level. We like to see the oil consumption as positive value on the panel meter; therefore inverted output of 20-4 mAdc is required for the transmitter to provide. Moreover, we like to add limit function on the transmitter’s 0% and 100% output. Does M-System have suitable transmitter for this kind application? [ HTML ] [ MS Word 199k ] |
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