Voltage : 12V/24V/220V
Size : 1″, 1.5″, 2″
Accuracy: ±0.5%
Flow Rate: 20-120L/Min
Preset: 18-34Bar

The AOCHENG Ex-OGM Preset Flow Meter is an oval gear flow meter with a digital preset controller designed for quantitative fuel dispensing in applications requiring explosion-protected equipment. It measures the volume of liquid transferred and supports preset volume or price dispensing. When the preset target is reached, the connected control system can stop dispensing automatically.
The Ex-OGM series is available in Ex-OGM25, Ex-OGM40, and Ex-OGM50 configurations with 1″, 1.5″, and 2″ inlet/outlet connections. Its LCD meter head displays dispensing information, while the compact threaded design supports integration into compatible fuel dispensing and transfer systems.

| Parameter | Specification |
|---|---|
| Product Type | Explosion-Protected Preset Oval Gear Flow Meter |
| Models | Ex-OGM25 Preset, Ex-OGM40 Preset, Ex-OGM50 Preset |
| Inlet / Outlet | 1″, 1.5″, 2″ |
| Flow Rate | 20–120 L/min |
| Accuracy | ±0.5% |
| Unit Price Range | 0–99.99 |
| Materials | Aluminum, stainless steel |
| Maximum Working Pressure | 3.4 MPa for 1″ connection; 1.8 MPa for 1.5″ and 2″ connections |
| Display | LCD |
| Preset Function | Volume and price preset |
| Meter Head | Explosion-protected design |
| Applicable Fluids | Biodiesel, diesel, HVO, XTL, gasoline, kerosene, subject to compatibility |

Product Advantages
The main difference is the explosion-protected configuration of the Ex-OGM version. The appropriate model depends on the installation area’s hazardous-area classification and the certification required by local regulations. The standard OGM model should not be assumed suitable for hazardous areas.
Confirm the model’s certification, explosion-protection marking, applicable hazardous-area classification, electrical connection requirements, and local regulatory requirements. The supplied catalog image alone does not establish a specific protection standard or certification scope.
The catalog describes both liter-based volume presetting and price-based presetting. The operator enters the desired target using the keypad, and the connected control system manages dispensing toward that target.
The catalog lists 1″, 1.5″, and 2″ connections. Select the size according to the system’s required flow, pipework, working pressure, and installation design. Confirm the model-specific operating range before final selection.
The catalog lists biodiesel, diesel, HVO, XTL, gasoline, and kerosene. Compatibility must be confirmed for the selected model, including seals, wetted materials, operating conditions, and applicable hazardous-area requirements.
1. Liter preset : Press“L/P”, choose L(Liter) to input the total volume you want to dispense, Press Start, the machine will automatically shut off the nozzle when the volume is the preset one.

2. Price preset : Press“L/P”, choose P(Price) to input the total price you want to dispense, Press Start, the machine will automatically shut off the nozzle when the price is the preset one.

3. Non-preset : Pick up the nozzle or press Start, the machine will start to the dispense, press Stop to exit.
Due to use for a long time caused the accuracy of measuring errors, it can be adjusted by keyboard operating computer coefficient, the method is as follows:
When standby, press Stop, then press L/P to keep 5 seconds, input the password 78787878, press L/P, then the keyboard shows the current coefficient(like the 1350 as below), clear it and input the coefficient that you need. Press Stop to exit. The bigger coefficient is the smaller amount of oil is in fact. The smaller coefficient is the bigger amount of oil is in fact.

When standby, press Stop, then press L/P to keep 5 seconds, input the password 11223344, press L/P, the board will show the current unit price, press clear key and then input the unit price what you want.

When standby, press Stop, then press L/P to keep 5 seconds, input the password 55667788, press L/P shows recent 10 records of refuel and totalizer. L1 is the latest dispensing amount. LC is the total liter, P1 is the latest dispensing account. PC is the total price.

(1) When the sensor is faulting, pick up the nozzle and press Start, but it failed. The keyboard shows E1.
(2) The voltage is not stable, the battery is low. The keyboard shows the tip E2.
(3) When the price pass 9900.XX for one time, stop the motor, the keyboard show E3 pick up the nozzle and press Start, continue to dispense.
(4) When Liter passes 9900.XX for one time, stop the motor, the keyboard shows the tip E4. Pick up the nozzle and press Start, continue to dispense.
(5) When the coefficient is zero, the keyboard shows the tip E5.
EX-OGM quantitative flow meter microcomputer oil filling machine using advanced computer technology, electromechanical integration equipment. It is suitable for vehicles, oil depots, land farms, factories and other operations to add oil with an ignition point of less than 55℃ to vehicles or other equipment. This series of oil filling machines is a high accuracy, easy operation, convenient maintenance. It can display the refueling volume, amount and unit price. The quantitative refueling mode of liter quantitative and amount quantitative is convenient for the operator to refuel the vehicle and quickly. The refueling data is displayed on the LCD screen, which is clear and beautiful.
Features:
♦Preset volume price oval gear flow meter
♦ Suitable with Petrol, Diesel, IP or Biodiesel compatible chemicals
♦ Low pressure drop
♦ Max. pressure :1” = 34 bar, 1-1/2” & 2” = 18 bar
♦ Accuracy : 0.5%
♦ Unit Price Range: 0-99.99
♦ Volume Range: 0-99999,99L
♦ Amount Range: 0-999999.99
♦ Totalizer: Volume: 9 digits, Amount: 11 digits
♦ Size range of 1″, 1-1/2″, 2″
♦ Material options of Aluminum, and Stainless steel

