HOJILA FM-100V10 Digital Water Velocity Meter Water Flow Rate Meter Instructions

HOJILA FM-100V10 Digital Water Velocity Meter Water Flow Rate Meter

Specifications

• Product: Portable Flow Meter

• Model: FM-100V10

• Application: Designed for hydrological stations, factories, mines, environmental protection monitoring stations, farmland irrigation and drainage, hydrogeology survey, etc.

• Features:

  • Simple structure, light and convenient
  • Low power consumption and complete functions
  • High degree of automation, stable, and reliable
  • Equipped with a Hall velocity rotation sensor for measuring
    flow in open channels

• Speed Range: 0.01-10.00 m/s

• Measurement Error: 1.5%

Product Usage Instructions

Overview

Before using the portable flow meter, carefully read the manual and keep it in an accessible place. The meter is suitable for various applications requiring flow velocity measurement in open channels.

Functional Features

The portable flow meter is characterized by its simple structure, light design, low power consumption, and high degree of automation. It is suitable for precise velocity measurements in different environments.

Technical Parameters

The instrument operates based on the velocity area method of open channel flow measurement. It calculates flow rate using the formula V = (K * N) / T + C (m/s), where K is the blade hydraulic pitch, C is the current meter constant, T is the flow measurement duration in seconds, and N is the signal number.

Test Principle

The flow meter measures flow velocity by analyzing the rotation of the rotor driven by water power. It calculates flow rate based on the flow velocity and specific parameters set on the instrument.

Flow Measurement

To measure flow rate, follow these steps:

1. Set the necessary parameters such as blade hydraulic pitch (K), current meter constant (C), and flow measurement duration (T).
2. Initiate the flow measurement process by pressing the appropriate keys on the display screen.
3. Observe the instantaneous flow rate displayed on the screen.

Frequently Asked Questions

Q: What accessories are included with the portable flow meter?

A: Standard accessories include a speedometer, probe rod, paddle, signal line, packaging boxes, and instructions. Optional accessories may include an extension rod.

Q: How can I calculate flow rate using the portable flow meter?

A: To calculate flow rate, ensure you have set the correct parameters (K, C, T) and initiated the measurement process. The instrument will display the instantaneous flow rate based on the measured data.

LCD: LIQUID crystal display
Measurement method: pole positioning measurement.
Temperature range: -10 ° C-50° C
Power : 4 7 batteries
Backlight: LED backlight
Host size: 75mm135mm*25mm

Overview

FM – 100V10 portable flow rate meter (hereinafter referred to as portable flow meter) is designed for hydrological stations, factories and mines, environmental protection monitoring station, farmland irrigation and drainage, hydrogeology survey and other departments in the field of velocity of flow in open channel flow The flow meter is equipped with Hall velocity rotation sensor, which can measure the polluted water flow When you purchase this portable flow meter, you are taking a step forward in the field of precision measurement. This table is a computer-based testing tool, which can be used for many years if handled properly. Please read this manual carefully and keep it in an accessible place before using.

Functional

• Simple structure, light and convenient,
• Power consumption, complete functions,
• High degree of automation, stable and reliable,
• In line with the national high temperature rotary slurry, is a new type of portable velocity measurement instrument.

Technical parameters

Iinstrument：K:0.0500、C0.0100 Speed range: FM-100V10 (0.01-10.00 m/s)
Current measurement error :≤1. 5%

When measuring flow velocity, the flow velocity of rotary rotor is driven by water power
Instrument rotation, built-in signal device to generate revolution signal, By the following formula Calculated flow rate:

Formula: V: Average flow velocity in flow measurement period (m/s)
K: blade hydraulic pitch C: current meter constant
T: flow measurement duration (unit: S) N: T period
The signal number

Instruments that

1. sensor cable
2. display screen
3. UP key
4. On/off button
5. Right/Start and Stop keys
6. Menu keys
7. Screw rod 4-8:Helical blade

Accessories

Standard: speedometer, probe rod paddle, signal line, package Packing boxes and instructions Optional:extension rod

Panel description

1. time
2. battery voltage
3. blade hydraulic pitch
4. Automatic test interval time 6-5: Automatic measuring time
5. Manual time measurement 6-7: Instantaneous flow
6. N- Shock pulse number

Test principle

The instrument is based on the principle of velocity area method of open channel flow measurement Design, the flow rate can be measured Q=V ●S(S is broken Surface area)

1. Flow velocity measurement:
   When the instrument is used, K, C are constant, flow measurement
   As long as T and N are measured, the flow rate can be calculated.

2. Flow calculation:
   Flow measurement According to the flow rate area method of open channel flow measurement, the flow rate is measured first and then multiplied by the area of the fault

Operation instructions

1. Parameter setting operations: 8-1.1 Parameter setting 1: Check whether the display screen is consistent with the current meter parameters. If not, press the MENU
   Quantity, when the need to measure the output according to the section area: the unit is square meters can be set after the flow of the cross-sectional area, the formula Q=V ●S (S is the section
   Area)

key to enter Setting 1, and modify the display screen by right move and up move. For example, if C is 0.0100, move the cursor to C=.0000 and press Press the move up key, add 1 for each press, and press it repeatedly until the value of the number at which the cursor is located is consistent with the required value, that is, C=0. 0100. The method of modifying K value and measuring time T is the same as above: first press the right shift key to shift, then press the up shift key to add, until it is correct. Repeat the above operation if you press the wrong button.
The measurement data
After setting parameters correctly, press “Move right keyboard + Move up” at the same time to save parameters and return to the measurement state; Enter the measurement state, the display is as shown in the figure: If automatic measurement, after each measurement, the instrument will automatically calculate the flow rate value according to the male and display 1V= 0.000m /S. After fixed display for 3-5 seconds, the automatic measurement will be repeated, but the flow rate value will In the display screen, input K and C coefficients according to the parameters of the specification Input :T indicates the measurement time unit of automatic measurement in seconds

2.  Press the menu key to enter Setting 2

remain displayed until the end of the next measurement. If manual measurement, after each measurement, after reading the number, press the start and stop button once, you can carry out the next measurement. Measurement, when the first signal coming, visible from the display timing starts to time T, N began to count, when time T arrived at the set time, to receive a signal, the instrument automatically shut down T, N, and automatically calculate the velocity V, to show delay 3-5 seconds, the instrument automatically start next time flow, repeat the above process, In this measurement, the V value on the display is the last flow rate value for easy reference and recording.

On the LCD, 0 indicates automatic measurement, and 0 indicates automatic measurement. If manual measurement is required, set this symbol to 1. Measurement interface, 3 seconds after the start of processing automatic measurement.
If automatic measurement, the instrument will automatically repeat the measurement times (interval time repeat the above process, In this measurement, the V value on the display is the last flow rate value for easy reference and recording.

Instrument maintenance

After each use, rinse the current meter and rod with water, dry them with towel and store them.

Matters needing attention

1. Pay attention to the polarity of the battery. Alkaline battery is recommended.
2. Do not mix old and new batteries, different brands of batteries;
3. If the meter is not applicable within 7 days, take out the battery to avoid battery discharge and liquid leakage.
4. Battery leakage damages the instrument, which is not covered by warranty;

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