System solutions
Follow the links in the table to go directly to the selected system solution.
| SYSTEM SOLUTIONS |
TEXT |
 |
FlowCheck
- Electronic gas separator |
Read more> |
 |
Optolevel
- Overfill prevention system |
Read more> |
|
VolumeCheck
- Electronic measurement system |
Read more> |
FlowCheck
Patented electronic gas separator
FlowCheck continuously monitors the presence of gas in a delivery of petroleum products from road tankers with volumetric meters. Upon discovery of gas, the delivery is immediately stopped and gas separation commences automatically through a pneumatically controlled degassing unit.
Fast and accurate deliveries
FlowCheck is approved to MID and OIML R117 standards up to a flow rate of 1300 litres per minute. The exceptionally low pressure drop of FlowCheck allows a substantially higher flow rate, with retained measurement accuracy, compared with traditional gas extractors thus making the actual discharge time much shorter.
No product contamination
FlowCheck is designed to be completely empty after delivery, leaving no residues, thereby avoiding contamination.
Widely spread
The first version of FlowCheck was introduced in the Swedish market in 1991. Since then the development of the product in terms of functionality and simplification of installation has made it popular and widely spread. There are now more than 3000 installations of FlowCheck on road tankers in many countries in Europe and Africa.
Flexibility
FlowCheck can be installed together with traditional PD-meters but it´s laminar flow makes it specially suitable for turbine meters. The sensor can be integrated with electrical metering systems thereby offering features like pre-set and interlock. The programmable logic of the sensor can be upgraded to satisfy future changes in regulations and demands. Another possibility is to apply the FlowCheck principle on other non-conductive liquids.
Logically controlled outputs
FlowCheck enables up to three different outputs to be logically controlled by the sensor giving possibilities of simplifying the total installation of a metering kit.
Basic features
• No moving parts
• Insensitive to dirt
• Low weight
• Small dimensions give a neat and simple installation
• Negligible contamination
• Negligible pressure drop resulting in quick and economical deliveries
• A delivery can easily be started regardless of compartment levels
• Can be integrated with the meter volume pre-set function
• Quick-start feature enabling fast filling of empty pipe system
• Enables conditional or logical control of a delivery pump or a vacuum breaker
• Eliminates the need for an ”aircheck” valve after the meter since an empty FlowCheck sensor will keep the stop valve closed
• Full pump meter after delivery
• Allows full or empty gravity meter after delivery
• Can react to diffused air in the delivery (foam detect)
• Works with petroleum-based products
• Environmentally sound since it can be installed as a closed system (VOC)
• Intrinsically safe and Ex-approved
Working principle
The sensor (FCS) monitors the product flow ahead of the meter and if any gas is detected it will close the pneumatic ball valve (FCV), fitted after the meter. Gas will then be led through the riser tube to the degassing unit, (FCAU). When the sensor activates degassing it also opens the degassing unit and the system pressure will push gas out of the unit. The gas can be led to the vapour return system or via a by-pass to the outlet of the delivery hose.
| Versions of the FlowCheck sensor |
Item no. |
|
FlowCheck sensor, 1 SV output |
FCS11 |
|
FlowCheck sensor, 3 SV output |
FCS13 |
|
FlowCheck sensor, 1 SV w/o FIK |
FCS21 |
|
FlowCheck sensor, 3 SV w/o FIK |
FCS23 |
| Logic versions & accessories for the FlowCheck sensor |
Item no. |
|
Logic pump ctrl & quick start |
FCL11 |
|
Logic vacuum breaker |
FCL12 |
|
Logic back flush |
FCL42R |
|
Solenoid valve for FCS13 |
FCSV |
|
Solenoid valves for FCS13 |
FCSV2-3 |
| Degassing unit for FlowCheck |
Item no. |
|
Degassing unit |
FCAU2 |
| Accessory for the degassing unit |
Item no. |
|
Inlet/exhaust valve DN20 |
FCV20 |
Optolevel
• Overfill prevention - loading
• Product mixing prevention - loading
• Interlock functionality
• Overfill prevention - delivery
Petroleum fuel products such as heating oil, kerosene, diesel and petrol are continuously being improved and refined in order to minimise negative effects on the environment. New products are introduced on the market regularly. If these modern products are mixed, even in small quantities, their highly specified qualities will deteriorate, sometimes so much that the product no longer can be used.
Avoid Contamination
The same road tanker often handles various types of fuel products. When it starts to fill up for the next run, it is necessary to know whether the tanker has been completely emptied at the last delivery or if there is still a residue of product left in a compartment or the pipe work. The risk of contamination with loss of quality and even possible safety hazards is obvious. Optolevel solves this for you.
Complete Compartment Delivery
Petrol delivered from tankers is normally measured, either by delivering it through a meter or delivering a complete compartment. In the latter case, the compartment has to be verified full upon arrival and empty on departure from the delivery point. This can be accomplished by opening the manhole cover on the tanker roof but this is physically dangerous and allows vapours to escape into the atmosphere (very “non-VOC”). Optolevel solves this for you.
Overfill Prevention - Loading
An overfill prevention system is mandatory for all bottom loading road tankers. Normally this is a separate system installed solely for the purpose of preventing overfilling. Optolevel solves this for you.
Overfill Prevention – Delivery
Many local regulations require storage tanks to be equipped with some form of overfill prevention system, normally in the form of a thermistor. An amplifier is needed to power the thermistor. Optolevel solves this for you.
Flexibility and Safety
Optolevel can be used stand-alone or integrated with other on-board systems. The system supports up to 24 optical sensors all monitored by GateWay10. By using the built-in Interlocks, it is possible to increase safety during loading. GateWay10 can communicate via a CAN-bus and configuration is quickly executed through user-friendly software. In addition to all the features mentioned above, Optolevel also offers overfill prevention when product is drawn from the trailer into a compartment on the truck. Not only will the controller indicate visibly when a compartment is full, it can also be configured to
close the foot valves to avoid an overfill situation.
| Central unit for Optolevel |
Item no. |
|
Gateway 10.4 STD version |
GW10.4 |
| Optical sensors |
Item no. |
|
Optical wet leg sensor |
2407AA |
|
Optical top sensor |
2407YA |
| Accessory for wet leg sensor |
Item no. |
|
LOW8 sensor conn. d24mm, for connection of wet leg sensor |
38-3476 |
VolumeCheck
Electronic measurement system
The price of oil and petrol has put stock control and meter accuracy in focus. To achieve both, the development of products for petroleum distribution has been aimed at electronics. Electronic equipment can enable efficient air separation, temperature compensation, accurate metering and on-line communication between the road tanker and the depot/gantry. This gives ground for potential cost rationalisation and increased efficiency.
Flexibility
VolumeCheck can be used as a stand-alone electronic measuring system or integrated with an on-truck computer (OTC). Together with FlowCheck (an electronic gas separator) and/or LevelCheck (an electronic level detection system) more advantages can be gained.
Conversion of vehicles
VolumeCheck is the right choice, not only for new road tankers but also for existing vehicles that have to be converted to meet today’s demands. The mechanical calibrators are simply replaced with smaller, electronic ones. This means that existing
rotor meters can be left untouched and do not have to be reinstalled, a fact that reduces the direct costs and the time for installation. The installation is simplified further by our unique intrinsically safe "ia" data bus concept (ESDL) which enables data and power to be transported by the same single cable to
each unit.
Foot valve recognition
Incorporated in VolumeCheck is the ability to recognise the status of the foot valves. This has numerous advantages: it is possible to avoid delivering the wrong product to a customer since VolumeCheck recognises which compartment has been opened and may know the product in it. The display also clearly shows which compartment has been opened by a lit
LED.
Communication
The exchange of information between route- and load planning systems at headquarters and the road tanker out on a delivery is soon a necessity for oil companies who face ever increasing competition. The key word is automation: to minimise the manual hours and errors by maximising the information exchange. VolumeCheck has an open and flexible interface already in use at large oil companies for this type of exchange of information.
Basic features
• Enables temperature compensated deliveries
• The reduced total size of the meter and calibrator facilitates installation
• Four meters can be connected and run simultaneously
• The display can be connected pneumatically to the foot valves to show their status (open/closed)
• The ESDL bus enables the units to be daisy-chained to one another making installation simple
• The units can be connected as desired and the display installed comfortably wherever wanted
• The calibration constants are stored in the calibrator
• Few moving parts increase the life span
• Integrated safety features
• Ready to account for delivery of whole compartments
• The delivery information can be transmitted directly for invoicing
• Complete information about the quality, quantity and temperature to the oil company and the customer
• Open and flexible interface to OTC
Working principle
VolumeCheck consists of a computer, a display, an electronic calibrator, a printer and a data bus. The electronic calibrator supplies the computer with values for the volume and the temperature of the delivered quality. Every delivery is controlled from the display which shows the quality, the quantity, the flow rate, the status of the foot valves and much
more. The display is not tied to any one specific meter; it is possible to see and/or register information for several meters with one display. The smooth surface of the display is made of metal-coated glass and a magnetic pen operates the controls. The display does not have a keyboard and is thus insensitive to
high pressure cleaning, cold, dirt and filth.
| Computer for VolumeCheck (VC) |
Item no. |
|
Meter computer, VolumeCheck |
CDB21 |
| Accessories for the computer |
Item no. |
|
Ticket printer |
TM290 |
|
ESDL-bus cable XX m |
KAB-TB-XX |
|
Printer cable |
PKA11 |
| Versions of the VolumeCheck display |
Item no. |
|
VC display w/o foot valve recognition |
MP13-0 |
|
VolumeCheck display, 4 comp. |
MP13-4 |
|
VolumeCheck display, 5 comp. |
MP13-5 |
|
VolumeCheck display, 6 comp. |
MP13-6 |
| Calibrator for VolumeCheck |
Item no. |
|
Electronic calibrator VC |
302560 |
|
Wennstrom Flow Control AB, Box 42, SE-736 21 Kungsör, Sweden. Tel +46 227 410 40. E-post wfab@wennstrom.com