Impeller flowmeter

Introduction: Overview of impeller flowmeter: The impeller flowmeter (a turbine flowmeter composed of a turbine flow sensor and a display instrument). Sensors have characteristics such as accuracy, repeatability, and simple operation for lifespan. Can be applied to measurement in industries such as petroleum, chemical, metallurgy, papermaking, etc

Overview of impeller flowmeter:

Impeller flowmeterThe turbine flow sensor is paired with a display instrument to form a turbine flow meter. Sensors have characteristics such as accuracy, repeatability, and simple operation for lifespan. Can be applied to petroleum, chemical, metallurgy,

Measure the instantaneous flow rate and total volume of liquids in industries such as papermaking.

Impeller flowmetercharacteristic:

★ Low pressure loss.

★ It has strong resistance to electromagnetic interference and vibration, and has a long working life.

★ Adopting ultra-low power single-chip microcomputer technology, the whole machine has functions, low power consumption, and performance. Intelligent flow display with non-linear accuracy compensation function. The accuracy of the correction formula is better than ± 0.02%.

The instrument coefficient can be set online through buttons and displayed on the LCD screen, which is intuitive and clear.

★ Use EEPROM for power down protection of accumulated flow and instrument coefficient. The protection period is greater than 10 years.

Impeller flowmeterTechnical parameters:

★ Flow meter specifications, basic parameters, and performance indicators

Accuracy: Level 0.5, Level 1.0;

★ Usage conditions:

1. Environmental temperature -20 ℃~50 ℃;

3. Temperature of the tested medium: -20 ℃ to 120 ℃;

4. Atmospheric pressure: 86Kpa to 106Kpa;

5. Explosion proof grade: ib Ⅱ BT4

★ Signal transmission distance: The distance from the sensor to the display can reach 1000m.

Impeller flowmeterElectrical characteristics:

1. Display mode:

(1) LWGY remote transmission display: pulse output (equipped with display instrument);

(2) LWY on-site display: LCD cumulative flow rate, unit (m ³)

LCD display instantaneous flow rate, unit (m ³/h)

(3) LWGB turbine flow transmitter: (equipped with display instrument).

2. Output function:

(1) LWGY pulse output, p-p value determined by the power supply;

(2) LWY can have pulse output or 4-20mA two-wire current output;

(3) LWGB 4-20mA two-wire current output.

3. Power supply:

(1) LWGY: DC5~24V;

(2) LWY: The 3V lithium battery installed inside the instrument can be used continuously for 3-5 years;

(3) LWGB: DC24V.

Impeller flowmeterInstrument structure and installation method:

1. The instrument installation adopts flange connection, threaded connection and clamping type;

2. The direction of liquid flow during installation should be consistent with the direction indicated by the arrow on the sensor housing, and the upstream straight pipe section should be ≥ 6DS, and the downstream straight pipe section should be ≥ 5DS (DS is the measured inner diameter of the tested pipeline).

3. Sensors should be kept away from external magnetic fields. If unavoidable, necessary measures should be taken;

4. In order to avoid affecting the normal transportation of liquids during maintenance, bypass pipelines should be installed outside the straight pipe sections at both ends of the sensor (as shown in Figure 4);

5. When installing sensors outdoors, please ensure that the amplifier plug is waterproofed;

6. The wiring of sensors and display instruments should be selected according to the power supply of the amplifier. Please refer to the relevant "user manual" for details.
Liquid turbine flowmeterSelection instructions

Long March Instrument (Jinhu) Co., Ltd									describe
	CZ-	Impeller flowmeter
medium		S							water
		Q							gas
		Y							oil
Medium pressure			1						Low pressure and atmospheric pressure ≤ 2.5MPa
			2						Medium pressure ≤ 6.4MPa
			3						High pressure ≤ 32MPa
medium temperature				1					Room temperature -20 ℃~55 ℃
				2					Medium temperature -20 ℃~120 ℃
				3					High temperature -20 ℃~180 ℃
Explosion proof grade					1				Common
					2				Explosion proof type
					3				Intrinsically safe type
Output						0			no-output
						1			Frequency output
						2			4-20mA output
						3			1-5V output
Display mode							0		no display
							1		local display
caliber								-010	Φ10
								-015	Φ15
								-025	Φ25
								…	…
								-200	Φ200