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1、 Characteristics of thermal flowmeter:
The thermal flowmeter adopts the principle of thermal diffusion, which is a technology that can be used under harsh conditions, with excellent performance and high reliability. OW thermal flowmeter is a device that uses two temperature sensors placed in a medium. One sensor is heated to a temperature above the ambient temperature, while the other temperature sensor is used to sense the temperature of the medium. As the flow rate of the medium increases, the heat carried away by the medium also increases. The temperature difference between the two temperature sensors will change with the flow rate of the medium. The fluid flow rate is calculated based on the proportional relationship between the temperature difference and the flow rate of the medium.
2、 Characteristics of thermal flowmeter:
1. The measurement range is wide, with a maximum measurement range of 20:1 (liquid) or 10:1 (gas).
2. Accurate measurement and high precision, flange type can reach 0.2% (liquid) or 0.5% (gas).
4. Extremely high sensitivity, capable of measuring ultra-low flow rates, and can measure low flow velocities of 0.08m/s.
5. Good repeatability, generally 0.05-0.08%, with optional small signal resection, non-linear correction, and selectable filtering time.
5. The pressure loss is small, with a small diameter of only about 1/2 △ P of the standard orifice plate, and the pressure loss begins to decrease significantly for diameters above DN100.
6. Calibration is convenient. In addition to using standard equipment for calibration, dry calibration methods can also be used, such as the weight hanging method, which can be completed with a single button operation.
7. The flow range can be changed by replacing the blocking components according to actual needs, and the online detachable plug-in structure can achieve non-stop production, continuous flow maintenance or replacement.
8. Low power battery on-site display, capable of online direct reading of readings. The display screen can simultaneously read instantaneous flow accumulation flow and percentage bar chart, and can switch to display compensation temperature and compensation pressure readings.
9. Strong anti-interference and anti impurity capabilities, multiple output forms, able to transmit various parameters remotely, and can be used without mixing heat.
3、 Parameters of thermal flowmeter:
Measurement range: continuously adjustable from 0-20 cm/s to 1-100 cm/s. (Related to water, expanding range for other media).
Measurement time: 2-10 seconds, according to the measurement conditions.
Linear deviation:<5% (optimal combination slope).
Repeatability tolerance:< 2%.
Temperature drift:< 3%/K.
Power supply voltage: 24V DC ± 10%.
Current consumption: maximum 100mA.
Output current: 4-20mA.
Resistive load: 0-600 ohms.
The thermal flowmeter adopts the principle of thermal diffusion, which is a technology that can be used under harsh conditions, with excellent performance and high reliability. OW thermal flowmeter is a device that uses two temperature sensors placed in a medium. One sensor is heated to a temperature above the ambient temperature, while the other temperature sensor is used to sense the temperature of the medium. As the flow rate of the medium increases, the heat carried away by the medium also increases. The temperature difference between the two temperature sensors will change with the flow rate of the medium. The fluid flow rate is calculated based on the proportional relationship between the temperature difference and the flow rate of the medium.
2、 Characteristics of thermal flowmeter:
1. The measurement range is wide, with a maximum measurement range of 20:1 (liquid) or 10:1 (gas).
2. Accurate measurement and high precision, flange type can reach 0.2% (liquid) or 0.5% (gas).
4. Extremely high sensitivity, capable of measuring ultra-low flow rates, and can measure low flow velocities of 0.08m/s.
5. Good repeatability, generally 0.05-0.08%, with optional small signal resection, non-linear correction, and selectable filtering time.
5. The pressure loss is small, with a small diameter of only about 1/2 △ P of the standard orifice plate, and the pressure loss begins to decrease significantly for diameters above DN100.
6. Calibration is convenient. In addition to using standard equipment for calibration, dry calibration methods can also be used, such as the weight hanging method, which can be completed with a single button operation.
7. The flow range can be changed by replacing the blocking components according to actual needs, and the online detachable plug-in structure can achieve non-stop production, continuous flow maintenance or replacement.
8. Low power battery on-site display, capable of online direct reading of readings. The display screen can simultaneously read instantaneous flow accumulation flow and percentage bar chart, and can switch to display compensation temperature and compensation pressure readings.
9. Strong anti-interference and anti impurity capabilities, multiple output forms, able to transmit various parameters remotely, and can be used without mixing heat.
3、 Parameters of thermal flowmeter:
Measurement range: continuously adjustable from 0-20 cm/s to 1-100 cm/s. (Related to water, expanding range for other media).
Measurement time: 2-10 seconds, according to the measurement conditions.
Linear deviation:<5% (optimal combination slope).
Repeatability tolerance:< 2%.
Temperature drift:< 3%/K.
Power supply voltage: 24V DC ± 10%.
Current consumption: maximum 100mA.
Output current: 4-20mA.
Resistive load: 0-600 ohms.
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