UL162 Foam Extinguishing Agent Expansion Ratio And 25% Liquid
Separation Time Tester
UL162 Low-Expansion Foam Expansion Drainage Time Tester:
This device is manufactured according to the requirements of
GB/T15308 standard and is a foam generation system used in
small-scale tests for foam performance quality control. It meets
the requirements of GB/T15308 foam extinguishing agents, Appendix
A.2 foam performance test standard clauses, GB 27897-2011 expansion
ratio and 25% liquid separation time.
UL162 Low-Expansion Foam Expansion Drainage Time Tester Standard:
1. ISO 7203-1:2023
Foam fire extinguishing media - Part 1: Specification for
low-expansion foam concentrates for top application to
water-immiscible liquids
2. EN 1568-1:2020
Fire extinguishing media - Foam concentrates - Part 1:
Specification for low-expansion foam concentrates for surface
application to water-immiscible liquids
3. UL 162:2022
Standard for Foam Equipment and Liquid Concentrates
4.NFPA 11:2025
Standard for Low-, Medium-, and High-Expansion Foam
5.ASTM D1881-21
Standard Test Method for Foaming Properties of Surface-Active
Agents
6.JIS K 4814:2020
Foam fire extinguishing agents
7. AS 1851-2024
Routine service of fire protection systems and equipment
UL162 Low-Expansion Foam Expansion Drainage Time Tester Parameter:
| Name | Low-expansion foam liquid foaming multiple and liquid separation
time measuring instrument |
| Standard | |
| foam solution temperature | 15℃ ~ 20℃ |
| Ambient temperature | 15℃ ~ 25℃ |
| Foam generation system | It consists of a 5L/min foam gun, a 1.5-level (0-1) MPa pressure
gauge, a pressure tank, an air compressor, etc. |
| Foam gun | The flow rate measured using water at a pressure of 0.7 ± 0.03 MPa
is (5.0 ± 0.1) L/min. |
UL162 Low-Expansion Foam Expansion Drainage Time Tester Product
Feature:
1. Composition: Consists of a low-expansion foam generation system,
a standard foam gun, a low-expansion foam collector, and a
low-expansion foam separation analyzer.
2. Low-expansion foam generation system: Composed of an air inlet
pipe, a pressure-resistant storage tank, a pressure gauge, a foam
liquid delivery pipe, and an adjustable support;
3. Standard foam gun: When calibrated with water, at a pressure of
(0.63±0.03) MPa, the water flow rate is (11.4±0.4) L/min;
4. Low-expansion foam collector: See Figure 5, made of stainless
steel;
5. Liquid analyzer: See Figure 6, made of brass; used to calibrate
the volume of the foam receiving tank to 1 mL with water;
6. Other accessories:
6.1 Air compressor: 0.8 MPa, flow rate 30 L/min;
6.2 Thermometer: 1℃ graduation, mercury thermometer;
6.3 Graduated cylinder: 500 mL, 10 mL graduation;
6.4 Balance: 1000 g/0.1 g;
6.5 Stopwatch: 0.1 s graduation.
UL162 Low-Expansion Foam Expansion Drainage Time Tester Test
Procedure:
a) Prepare a foam solution using fresh water according to the
required concentration (if the foam solution is suitable for
seawater, prepare it using seawater conforming to standard 5.10.3).
Control the temperature of the foam solution to ensure the produced
foam temperature is within the range of (15-20)℃.
b) Start the air compressor and adjust the inlet pressure of the
foam gun to (0.7±0.03) MPa. Simultaneously, wet the inner wall of
the foam receiving tank of the eluent analyzer, wipe it clean, and
weigh it (m1).
c) After spraying for (5-10) seconds until stabilization is
achieved, collect the foam using the eluent analyzer.
Simultaneously, start the stopwatch, scrape off any overflowing
foam from the eluent analyzer, weigh it (m2), and calculate the
mass of 25% eluent according to formula (A.1) ( )
…………………………………………(A.1)
Where:
—Mass of the eluent analyzer, in grams (g);
—Mass of the eluent analyzer when filled with foam, in grams (g);
—Mass of 25% eluent, in grams (g). d) Remove the receiving
container from the precipitation analyzer and place it on the
balance. Simultaneously, place the foam receiving container on the
support, ensuring the precipitate is free of foam. Stop the
stopwatch when the precipitated liquid reaches 25% of its volume,
and record the precipitation time.
e) Calculate the foaming ratio according to formula (A.2):
………………………………………………(A.2)
Where:
—Foaming ratio;
—Density of the foam solution, in grams per milliliter (g/mL),
taken as = 1.0 g/mL;
—Volume of the foam receiving container, in milliliters (mL).
