
LevelMaster 7100 User manual 2105835 Rev AA |
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General specifications
Table 1 describes the LevelMaster general specifications.
Table 1: General LevelMaster specifications
Power
Supply voltage
9-15 Vdc
Current
40 mA transmitting; 1 mA standby
Power cycling
Available for optimal power management
Environmental/Safety
Operating temperature
Non-submerged
-20 °F to 185 °F (-29 °C to +85 °C)
Submerged floats
26 °F to 185 °F (-3 °C to +85 °C)
CSA-approved for intrinsically safe operation
Class 1, Div 1, Group D
4 level sensors max / barrier
Class 1, Div 1, Group C and D
3 level sensors max / barrier
Measurement
Range (depth)
2 - 25 feet (0.6 to 7.6 meters) in 1 foot (0.31 meters) increments
Relative level accuracy
+ 0.1 inches (2.5 mm) Optional: + 0.05 inches (1.25 mm)
Level resolution
+ 0.01 inches (0.25 mm)
Level repeatability
+ 0.05 inches (1.25 mm)
Temperature sensor accuracy
+ 1.8 °F (1.0 °C)
Temperature sensor range
0 °F to 185 °F (-17.7 °C to 85 °C)
Pressure
Non-pressurized tanks: single or dual floats
Note
: No SSTL, No high pressure supported
Single surface float specific gravity (at 68 °F)
0.41 (3 inch diameter), 0.60 (2.85 inch diameter)
Oil float specific gravity (at 68 °F)
0.47
Water float specific gravity (at 68 °F)
0.91
Emulsion float specific gravity (at 68 °F)
0.75
Materials and dimensions
Casing material
Fiberglass or stainless steel (pressurized tanks)
Casing outer diameter
1.95 inches (48.5 mm)
Float outer diameter
3.17 inches (80.5 mm) (2.85 inch single float on request)
Reducer bushing and compression fitting
Fits standard 3 and 4 inch (10.16 mm) tank port
Temperature sensor location
12 inches (300 mm) from bottom of sensor (other locations possible)
Communications
Output
Standard digital serial half duplex RS-485, ASCII protocol
Speed (baud rate)
1200, 9600, 19200 bps
LevelMaster components
Sensor assembly
The LevelMaster measures both tank fluid level and fluid temperature. The sensor assembly or coil assembly consists of a rod
with wound conductive wire througout the length of the rod. The temperature sensor is installed on the rod as well. The coil
assembly is an internal component and is installed inside the casing. The casing has the same length as the coil assembly. A
ribbon cable and connector on the top of the coil assembly provide the connection to the electronics board.
The sensor casing or tube is manufactured with different materials, depending on the corrosiveness of the fluid. These fluids
include, but are not limited to: culinary water, oils, solvents, or acids.
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Страница 48: ...LevelMaster 7100 User manual 2105835 Rev AA 38 Figure 35 Grounding the electronics board ...