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[ENG] TNRP : Pulse Radar Liquid Level Transmitter 6.3GHz
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2Application:
Max Measurement Range:
Measurement Accuracy:
Process Connection:
Antenna Material:
Process Temperature:
Process Pressure:
Frequency Range:
Signal Output:
Power
Application:
Max Measurement Range:
Measurement Accuracy:
Process Connection:
Antenna Material:
Process Temperature:
Process Pressure:
Frequency Range:
Signal Output:
Power
The best mounting position for a
conical vessel with flat top is the
center of its top, as the effective
measurement can reach the
bottom of vessel.
In order to avoid dampness under
outdoor or humid indoor conditions
or for those instruments mounted
on cooling/heating vessels, seal
rings used on cables should be
screwed tight, plus the cable must
be bended downward outside
cable entry, indicated on thediagram below
>500mm
1
2
Damp-proof
4
1.Reference Plane
2.Center of Vessel or Symmetrical Axis
1 2
1.Wrong: Mount the instrument
in/above filling stream, which
results in the measurement of
filling stream not the target medium.
2.Correct:
1
2
3
1.Wrong: Fail to turn the antenna
prependicular to the surface of
target medium.
2.Wrong:Instruments are mounted
in the center of concave or arched
vassel tops, which results in
multiple echoes.
3.Correct
Rights and Wrongs in Mounting
If there are agitators in vessels,
instrument must be mounted as
far away from agitators as possible.
Once installation completed, a
"false echo learning" should be
carried out while agitators in
motion to eliminate negative
influence caused by false echo
of agitators. You are advised to
opt for installation with standpipe
if foam or wave is generated due
to the action of agitators. Agitator
6
@ˆ…P
Power supply and current signal are carried by the same two-wire connection cable.
See the Technical Specifications of this guide for detailed requirement on power
supply. A safety barrier should be placed between power supply and instrument for
intrinsically safe version.
Power supply and current signal are carried by two 2-wire connection cables respectively.
See the Technical Specifications of this guide for detailed requirement on power supply.
Earth-connected current output can be used for standard version of level instruments,
while the explosion proof version must be operated with a floating current output. Both
instruments and earth terminals should be connected with ground firmly and securely.
Normally you can either choose to connect with the earth terminal on vessel or adjacent
ground in case of plastic vessels.
Standard 2-wire cable with outside diameter of 5...9mm, which assures the seal effect
of cable entry, can be used as feeder cable. You are recommended to use screened
cables in the event of electromagnetic Connection cable with special earth wire can
be used as feeder cable.
Connection cable with special earth wire can be used as feeder cable.
The two ends of shielded cable must be connected with earth terminal. The shielded
cable must be connected with inner earth terminal directly inside the transducer, while
the outside earth terminal on housing must be connected with ground. In the event of
earth-connected current, the shielding side of shielded cable must be connected to
ground potential via a ceramic capacitor (e.g. : 1 F 1500V) in order to dampen the low
frequency grounding current and avoid the disturbance caused by high frequency signals
4 Electrical Connection
Power Supply
General Introduction
4~20mA/HART 20mA/HART"%†B2-Wire@ˆ…P
20mA/HART"%†B4-wire)
20mA/HART"%†B4-wire) Cable Connection
Shielding &