avery-hardoll masterload ii™
DESCRIPTION
The Avery-Hardoll MASTERLOAD II™ is a versatile micro processor based electronic controller. It is an intrinsically safe system that is ideal for use in Category 2 hazardous areas and is comprised of a pulse transmitter mounted on the meter, a display unit giving readouts of batch volume, flow rate and a totaliser.TRANSCRIPT
MASTERLOAD II™Electronic Meter Controller for Aircraft Refuelling Vehicles
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General Information
Dynamic Calibration at all flow rates
The MASTERLOAD II™ is a microprocessor-based electronic meter controller. The system consists of a pulse transmitter (mounted on the meter), a display unit, and a power supply unit. A platinum resistance thermometer (PRT), printers, and any additional displays are optional and available. All MASTERLOAD II components are intrinsically safe and ideal for use in Category 2 hazardous areas.
Displays of batch delivery, rate of flow and totaliser are given on three large liquid crystal displays that provide readouts of batch volume, flow rate and the totaliser. These displays can be easily configured to show alternative values such as temperature compensated volume and volume to weight conversions. Additional displays can show repeat or supplementary information at other convenient locations on the refuelling vehicle.
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• Accurate, dynamic meter calibration
• Volume to weight conversion.
• Temperature compensation (option)
• Two-way data interchange to cab mounted datacapture systems
• Interface to deadman system
• Interface to accessories with 4-20 mA output
• Flexible installation
Features
The Avery-Hardoll MASTERLOAD II™ is a versatile micro processor based electronic controller. It is an intrinsically safe system that is ideal for use in Category 2 hazardous areas and is comprised of a pulse transmitter mounted on the meter, a display unit giving readouts of batch volume, flow rate and a totaliser.
MASTERLOAD II™ provides accurate error correction across the entire flow range.
Conventional meters are calibrated at only one flow rate - generally at 100% flow, despite the reality that meters operate at a variety of flow rates.
MASTERLOAD II calibration is corrected at all flow rates to provide the highest level of accuracy. With a choice of 1, 2, 4 or 8 calibration points across the full flow range - the system allows the user the flexibility to configure each MASTERLOAD II to suit the requirements of their own application. It performs a flow curve fitting exercise to provide the required correction.
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Additional Features
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MASTERLOAD II™
System Schematic
TEMPERATURE COMPENSATION
An add-on option that provides a temperature display. Using a platinum resistance thermometer (PRT), the display may be configured to show product temperature or mean batch temperature. Alternatively, full temperature correction to standard temperature or to the IP/ASTM tables 53 and 54 may be configured.
VOLUME TO WEIGHT CONVERSION
Provides a reading in weight. Available as either a simple manually entered density figure for low cost batch conversion or a dynamic input from an in-line densitometer which when linked to temperature correction offers the highest level of accuracy.
DATA COMMUNICATION to RS422 SPECIFICATION
Offers comprehensive two way data communication between the meters and a variety of vehicle systems allowing data flow from the meter to the system and user input passed back to the meter. Approved to EN ISO 6551-1995 level A, Masterload offers the highest level of data security available.
AUTOMATIC CALIBRATION
When calibrated against a masterload reference meter. A simple infra-red connection links any Masterload meter to a Masterload reference meter. This allows calibration to be carried out completely automatically thus reducing down time, volume of product passed and the potential for human error. Calibration certificates are computer generated to the IP or customer’s own specification.
DEADMAN INTERFACE
The power supply unit provides a permanent signal to the deadman circuit. If an error occurs, the signal is removed and the deadman shuts the fuelling off.
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Pulse Transmitters
MASTERLOAD II™
Consult the factory when certified engineering drawings are required. Dimensions shown are not suitable for construction or modifications
Dimensions
DISPLAY UNIT POWER SUPPLY UNIT
241
255
222 45
80
80 253
265
222
80
112
MASTERLOAD II™
Preset display unit.
MASTERLOAD II™
Preset display unit fitted with temperature compensation.
MASTERLOAD II™
Preset display unit fitted with temperature compensation and AutoCal link.
PULSE TRANSMITTERS
Liquid Controls POD
Electronic Pulse Output Device
Avery Hardoll Pulsers
Display Options
MASTERLOAD II™
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Liquid Controls105 Albrecht Dr.
Lake Bluff, IL 60044www.lcmeter.com
Copyright © 2015 Liquid Controls
Specifications
Sealing:All units are designed for outdoor use and are sealed to specification IP 65
Security:Full wire sealing Automatic error checking Alarm reporting Data Storage for 40 transactions
Operating Temperature-20 to 40° C
Transmitter: Temperature: -30 to 120° CFitting: Direct drive available for most makes of meterApproval: EN ISO 6551-1995 Level A Channels: 3 IndependentSecurity: Sense line
Humidity: Resistant up to 100% R.H.
Temperature Probe PRTAccuracy: +/-0.1° C Discrimination: 0.1° CRange: -30 to 120° CSet Up: Factory set Alarm Limits: ProgrammableDisplay: °F or °CCompensation: 15, 20 or 31.5° C
Safety Classification: Category 2
LCD Display:Batch: Min. volume - one unit 6 figures standard units(2 decimal places selectable) Flowrate: Sampled every .6 secs Totaliser: 8 figureRemote Displays: Up to 3 remote display units.Interfaces: RS422• 7 switch monitoring contacts• Auto calibration portID Mode: Simple password entry
ATEX Approvals:Power Supply Unit: (flameproof)
- II 2 G EEx d IIB T6- Cert. No. ITS04ATEX11903
Display Unit:- II 2 G EEx ib IIB T4- Cert. No. BAS02ATEX2199
Locations: Flexible mounting: (max 50 meters between units)
Delivery Override: Key Operated IP 65 Box (option)
Non-volatile Memory: Infinite data retention
Power Supply:12/24 VDC
Power consumption:350mA max. (excluding relays)
Relays:Max of 11 plug-in Typical - 1 Deadman Pulse output
Inputs:4-20mA (4)
Manual Input: Density for weight indication
Linearisation:1, 2, 4 or 8 selectableFull dynamic interpolationAccuracy: +/- .02 @ measuring condition and 15° C if temperature compensation fitted.
Product correction tablesIP/ASTM Table Selection to IP65Generalised crude (A tables)Generalised productsTable 54Table 53