Applicable to sprinkler flow coefficient measurement.This equipment only provides sprinkler test device with nominal flow coefficient less than or equal to 115 as standard;
1. Scope of application:
1.1 Applicable to sprinkler flow coefficient measurement.
1.2 This equipment only provides sprinkler test device with nominal flow coefficient less than or equal to 115 as standard; sprinkler with nominal flow coefficient of 161 and 202 is optional test device, such sprinklers are used in special environments and are not commonly used.
Nominal flow coefficient range:
Nominal flow coefficient K | Flow Coefficient Range | Flow Coefficient Range for Dry Sprinklers |
57 | 54~60 | 52~62 |
80 | 76~84 | 74~86 |
115 | 109~121 | 106~124 |
2. Compliant standards:
Comply with the measurement of flow coefficient in section 7.4 of GB5135.1-2019 "Automatic Sprinkler System—Part 1: Sprinklers".
3. Main technical parameters:
3.1 Test medium: water
3.2 Test pressure: 0.1MPa-0.6Mpa;
3.3 Pressure measurement:
3.3.1 The pressure measurement is measured by hydraulic sensor;
3.3.2 Pressure measurement accuracy: greater than 0.4.
3.4 Flow measurement:
3.4.1 Use vortex flowmeter to measure;
3.4.2 Flow range: 0~500L/min;
3.4.3 Flow measurement accuracy: greater than 1.0;
3.5 Boosting method: booster cylinder;
3.6 Pressure regulation: the frequency converter is used, which is controlled and adjusted by the computer;
3.7 Medium temperature: room temperature;
3.8 Control mode: manual, computer control;
3.9 Program interface:
3.9.1 Flow coefficient: measure the flow rate of the sprinkler head every 0.10MPa, the pressure is from low to high, and then from high to low, the computer automatically calculates the flow coefficient K value and the average value of k for each pressure point;
3.9.2 Real-time pressure value display;
3.9.3 Real-time traffic display;
3.9.4 The above parameters are collected, recorded, saved and produced by computer and printed out;
3.10 Test sample: meet the test of 2 sprinklers at the same time.