DPM-10
Air Orifice Flow Meter
Airflow Measurement in Pipelines with Orifice Plate
DPM-10 integrates orifice plate, nozzle, and Pitot tube measurement methods, supported by a high-accuracy ±1000 Pa differential pressure sensor. With built-in algorithms conforming to ISO 5167 and GB 2624, it provides precise and versatile airflow detection for HVAC commissioning, industrial ventilation, environmental monitoring, and energy efficiency audits.
Product Highlights
Professional-grade performance, fully reflective screen, and long battery life
Multi-Method Flow Measurement
Orifice Plate, Nozzle, and Pitot Tube
DPM-10 combines three standardized differential pressure methods— orifice plate, nozzle, and Pitot tube—into one instrument. Equipped with a ±1000 Pa differential pressure sensor and P-T-RH environmental compensation, it provides accurate conversion of velocity, volumetric flow, and differential pressure under varying conditions. User-defined pipe dimensions, orifice/nozzle types, and Pitot coefficients ensure adaptability to diverse ducts and standards.
Real-time Curve and Smart Functions
Dynamic Δp trend, instant zeroing, intuitive setup
The 3.5-inch capacitive touch screen simultaneously displays volumetric flow, velocity, and differential pressure, complemented by a real-time Δp curve that visualizes system dynamics. Peak changes, fluctuations, and balance points can be identified at a glance, enhancing field diagnostics. Automatic zeroing at startup and parameterized setup for orifice taps, nozzle types, and Pitot coefficients streamline on-site measurement and calibration.
Portable and Robust Design
Lightweight, aluminum-alloy body, field-ready
With a compact 308 g form factor and a 2200 mAh Li-ion battery, DPM-10 is engineered for portability and long operation in the field. The precision-machined aluminum-alloy body ensures durability and resistance to demanding environments, while a USB-C port enables fast 5 V/1 A charging. Together with its rugged build and built-in reset function, it provides a dependable solution for HVAC commissioning, industrial ventilation, emission monitoring, and energy audits.
Technical Specifications
| Display | 3.5-inch (320×480) capacitive touchscreen |
| Measurement media | Air (non-corrosive, clean, non-condensing) |
| Measurement methods | Orifice plate / Nozzle / Pitot tube |
| Measured values | Volumetric flow (m³/h), differential pressure (Pa), air velocity (m/s) |
| Standards | ISO 5167, GB 2624, JJG 518 |
| Differential pressure range | −1000 Pa to +1000 Pa |
| Accuracy | ±1.0% F.S. |
| Overload pressure | ±3 kPa |
| Response time | 5 ms |
| Airflow range | 0–99,999.9 m³/h |
| Orifice tapping | D & D/2, corner tap, flange tap |
| Orifice discharge coefficient | ISO 5167 / RHG iteration |
| Nozzle types supported | Long radius, ISA1932, Venturi |
| Pitot tube coefficient range | 0.500 – 1.300 |
| Air density | Calculated from P–T–RH compensation |
| Interfaces | Differential pressure positive (+) / negative (−), USB Type-C charging, Reset pinhole |
| Controls | Single button (long press to power on/off) |
| Auto zeroing | Automatic zero at startup |
| Battery capacity | 2200 mAh Li-ion |
| Input voltage | DC 5 V 1 A (USB Type-C) |
| Weight | 308 g |
| Dimensions | 73 × 120 × 30 mm |