CLARK SOLUTIONS
Turbine Flow Sensor Signal Conditioning Options
Model Series PFAD, SS, PFA, and PVDF
DESCRIPTION
The Equflow range of flow sensors has low flow sensing capabilities in a wide range of applications, and is suitable for clear, opaque, neutral, corrosive and aggressive liquids including fuel.
An ultra-lightweight turbine follows the fluctuation of flow very accurately and generates a high resolution IR reflected digital output signal.
In either flow controlled or monitoring applications, the Series PFA, PFAD and SS flow sensors can measure flow rates and totalize. Optional elements built into the circuit include a programmable K factor/voltage divider, flow switch and a programmable batch feedback function for pump control.
External optional electronic packages include model 6100 digital to analog (4-20 mA) converter and model S601, a professional, solid batch and flow controller that can be used as a monitor and/or totalizer. Model 6300 switching module is required when the internal flow switch or batch option is added to the flow sensor.
INTERNAL CIRCUIT OPTIONS (NEED TO BE ORDERED WITH FLOW SENSOR)
FLOW SWITCH
The PFA turbine flow meter can be modified into a programmable flow switch. The adjustment of the switching point of the flow meter is established with a simple program. When the adjusted switch point is attained, the meter outputs a 24 VDC signal (NPN transistor) to a switching module (Model 6300). As soon as the flow decreases below the switching point, the switching module is turned off. This option is available for 5-30 VDC models only.
Applications:
- Flow monitoring
- Piping leakage detection
BATCH CONTROL
The PFA turbine flow meter can be equipped with an adjustable counter (preset function). A programmable microprocessor in the meter is employed to set a prescribed dosing volume. On/Off control via NPN transistor of an external 24V DC solid state relay is accomplished with switching module Model 6300. This option is available for 5-30 VDC models only.
Applications:
Repeat dosing of a fixed volume such as in
- coffee machines
- soup machines
- infusion bags
- ampules
- bottles
EXTERNAL CIRCUIT OPTIONS
6100 DA CONVERTER- FREQUENCY TO ANALOG CONVERTER FOR STANDARD FLOW METER WITH ANALOG OUTPUT SIGNAL
Power supply DC model:16 to 24 VDC Output signal: 0 to 5 volt, 0 to 10 volt, 0-20 mA, 4-20 mA Maximum output signal:adjustable between 500 and 4000 Hz input frequency Adjustable response time. Adjustable span: 20 mA Output 5 volt supply for flow meter ENVIRONMENTAL DATA: Storage Temperature: -20°C to 70°C (-4°F/158°F) Operating Temperature: 0°C to 50°C (32°F/122°F) Relative Humidity: 70% @ 0°C to 50°C REAL TIME: Response time adjust: 0.01 to 1 seconds Max. frequency input: 5 kHz MECHANICAL DATA: Width: 90.7 mm (3.57") Weight model DC: 0.154 kg ( 0.340 lbs) EN 50081-1, EN 50082-2 35 mm DIN Rail Mount per EN 50022 Height: 75.8 mm ( 2.98" ) Length: 71.4 mm ( 2.81" ) |
 |
FLOW AND BATCH CONTROLLER S601
The S601 is a professional, solid batch and flow controller that can be used as a monitor and/or totalizer. The distinctive features are:
|
 |
Application Flexibility:
The configuration can be determined easily by selecting the pushbutton codes. After pushing the buttons in the selected code, the S601 is changed from batch controller into flow controller or monitor or vice versa. The following functions are available:
- Filling 2 liquids simultaneously Dosing and filling of preset volumes
- Filling 2 liquids sequentially Dosing and filling of preset volumes
- Batch to main stream Flow-proportional dosing in batches to a main stream
- Batch in time Dosing in batches with an adjustable time interval
- Flow process Flow control for one liquid
- Proportional mixing Flow-proportional/in percentage/continuous dosing to a main stream
- Monitoring + totalizing Flow
- Pump control
General Power supply 24 VDC Dimensions 140 x 220 x 72 mm (WxHxD) Casing High grade synthetic; others on request Environment Temp. - 10 to +70°C Type of enclosure IP65 Display 2 x 16 digits Input signals: 2 x flow meters, pulse max. 5 KHz. 3 x analog (0-10V), 1 x analog (4-20mA) External control for Alarm/Start-Stop/Up-Down Output signals 1 x analog, 0 - 10 V
FLOW SWITCH AND BATCH CONTROLLER 6300
Model 6300 is an external (to the flow sensor) switching module for use when the flow sensor internal flow switch or internal batch functions are ordered. The output of the module is a solid state switch rated for 110 mA @ 24 VDC.
The switch or batch function is programmed via Equflow's "Equ Configuator" software, a windows based software employing a USB connection.
If the flow sensor is set to a batch function mode the output signal will drop to zero after starting model 6300 (powering up the sensor). This also triggers the opto coupler in the 6300 module which in turn powers the 6300 solid state relay. The liquid passing the flow sensor is counted inside the flow sensor and when the preset volume is reached the output will be set high causing the relay to reset.
If the start command to model 6300 is given and for a selected time there is no output measured, the output will be set to high.
The duration of dosing can also be limited with a timer for safety reasons in the event of a turbine failure.
