| Flowmeter
Series > Proces-Data A/S |
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OUTPUT
SIGNALS |
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The
transmitter has three outputs, OUTPUT 1, 2, and
3.
OUTPUT 1 is a power supply output,
which can be used for power supply of external counter
circuit. The voltage of the output can vary from
20 to 32 V DC.
OUTPUT 2 can be selected for one
of three functions:
1: Pulse signal, 0-5 c/s. The signal is taken to
a counter, electronic or electromechanical, for
indication of the total volume, e.g. in litres.
2: Sign for OUTPUT 3. The signal indicates the flow
direction and can be taken to an UP/DOWN counter,
which is actuated by pulses from OUTPUT 3.
3: The output signal from the pre-set counter. Before
start of measuring a SET-point via the display is
inserted, and the pre-set counter is reset. When
the required volume is achieved, OUTPUT 2 gives
a stopsignal.
OUTPUT 3 can be selected for one
of two functions:
1: Pulse signal 0-1000 c/s. The signal can for instance
be taken to a counter for volume registration. The
signal can also be used for registration of actual
flow.
2: Current signal 4-20mA (only for transmitter in
extended version). The signal can be taken to a
regulator for controlling the liquid flow.
Besides these three outputs it is possible to connect
the flow transmitter direct to the display unit
PD 210. It is also possible to connect the extended
version transmitter to a communication system for
data processing. |
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| DISPLAY
UNIT |
Introduction: |
The
display unit PD 210 can be connected direct to the transmitter.
The display unit can be used as an accumulative counter
and pre-set counter and for the registration of instantaneous
values of flow rate and temperature. The display unit
is also used in connection with fault finding. |
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Functions:
Accumulative Counter: The display unit
registers the total volume, e.g. in m3.
Pre-set Counter: Before commencing measurement
a SET-point is inserted, and the pre-set counter is reset
manually. When the required volume is achieved, OUTPUT
2 gives a stop signal.
Instantaneous value, flow: The display
unit registers the actual flow rate, e.g. in m3/h.
Instantaneous value, temperature: The
display unit registers the actual temperature in ¢XC.
Fault finding: The flow transmitter is
equipped with a comprehensive test system which is able
to disclose faults, arising from improper use of the transmitter,
or faults arising from the transmitter during use. When
the test system registers a fault, an >>A<<
appears in the first digit of the display. By pressing
the >>TEST<< button the display will register
an error checking code of two digits, registering the
type of error.
Connection:
The display unit is connected to the flow transmitter
with one double-connector cable. The display unit is supplied
with power via this cable. It also transmits the exchange
of data between the flow transmitter and the display unit.
The length of the cable must not exceed 100 m.
Location:
The display unit is intended for fixed installation e.g.
in a panel. The unit is waterproof. The ambient temperature
limits are - 10¢XC to + 50¢XC. |
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| Dimensions: |
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Table
1: Dimensions - Standard-calibration |
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D |
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Stand-calibration |
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nom.
size |
Capacity |
Weight |
OUTPUT
2 |
OUTPUT
3 |
| Size |
mm |
m3/h |
Kg |
l/pulse |
l/pulse |
| C25 |
25 |
8 |
5 |
1,00 |
0.01 |
| C38 |
38 |
20 |
5 |
1,00 |
0.01 |
| C51 |
51 |
40 |
5 |
10,0 |
0.1 |
| C63 |
63.5 |
80 |
5 |
10,0 |
0.1 |
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| ORDERING |
Flow
transmitter:
The dimension and data of the transmitter are indicated
by an order number as shown in the example below: |
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*If
current output on OUTPUT 3 is required instead of pulse-output
this must be stated in writing below the order number.
Furthermore, the flow at which full signal
(20mA) is required on the current output should be stated.
Example: Current output 20mA at 30,000 L/h. |
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Display
unit:
Example: |
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Clamp
set:
Example: |
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The
clamp set consists of:
2 clamp rings
2 clamp liners
2 gaskets for above |
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