UL 180:2012 pdf download.Liquid-Level Gauges for Oil Burner Fuels and Other Combustible Liquids.
9.6.3 In such cases where testing with a Class Ill Combustible Liquid is necessary, automotive grade 30W Lubricating Oil and 80W Transmission Oil shall be used.
9.6.3 etleclive October 5. 2015
10 Functional Operation Tests
10.1 Representative gauge sample(s) in accordance with 9.1 shall be evaluated for functional operation and accuracy in accordance with 10.4 with Class II and Class Ill liquids under the following conditions:
a) Room temperature, and if applicable to affected products (in accordance with 10.2 and 10.3);
b) High temperature of 50 ±2°C (122 ±3.6°F) using the same sample: and’or
C) Low temperature of minus 30 ±2°C (minus 22 ±3,6°F) using the same sample.
The results shall be used for Initial compliance (in accordance with 10.5), and shall also establish a baseline to which any repeat tests, after other test conditions, are judged for comparison.
10.1 elleclive Oclobei 5, 2015
10.2 To determine if tests at high/low temperatures are needed, assessment of the design and materials with respect to the liquid level measuring and indicating functions shall use engineering principles including, but not limited to thermal expansion.’contraction and thermal changes in density, viscosity, flexibility, hardness, and similar properties.
10.3 If the high/low temperature effect on performance can not be determined, the test shall be repeated on one sample for comparison, and if found to have different results man at room temp. additional test on other samples in the model group shall be conducted.
10.4 The gauge shall be installed on a level test tank or simulated tank apparatus, initially calibrated in accordance with the manufacturer’s instructions, then evaluated for intended operation and level accuracy by filling the tank with the test liquids, and measuring the actual capacity at each required level interval (in accordance with 7.3), and any optional signal levels (In accordance with 7.4).
9.6.3 etleclive October 5. 2015
10 Functional Operation Tests
10.1 Representative gauge sample(s) in accordance with 9.1 shall be evaluated for functional operation and accuracy in accordance with 10.4 with Class II and Class Ill liquids under the following conditions:
a) Room temperature, and if applicable to affected products (in accordance with 10.2 and 10.3);
b) High temperature of 50 ±2°C (122 ±3.6°F) using the same sample: and’or
C) Low temperature of minus 30 ±2°C (minus 22 ±3,6°F) using the same sample.
The results shall be used for Initial compliance (in accordance with 10.5), and shall also establish a baseline to which any repeat tests, after other test conditions, are judged for comparison.
10.1 elleclive Oclobei 5, 2015
10.2 To determine if tests at high/low temperatures are needed, assessment of the design and materials with respect to the liquid level measuring and indicating functions shall use engineering principles including, but not limited to thermal expansion.’contraction and thermal changes in density, viscosity, flexibility, hardness, and similar properties.
10.3 If the high/low temperature effect on performance can not be determined, the test shall be repeated on one sample for comparison, and if found to have different results man at room temp. additional test on other samples in the model group shall be conducted.
10.4 The gauge shall be installed on a level test tank or simulated tank apparatus, initially calibrated in accordance with the manufacturer’s instructions, then evaluated for intended operation and level accuracy by filling the tank with the test liquids, and measuring the actual capacity at each required level interval (in accordance with 7.3), and any optional signal levels (In accordance with 7.4).
