Description
Sauermann DBM 620 Air Flow Hood Standard Kit
Professional Air Balancing Hood with 24-Point Measurement Grid
The Sauermann DBM 620 Air Flow Hood is a professional air balancing instrument designed for measuring airflow directly at supply and return diffusers. With a measuring range of 21 to 2501 CFM, the DBM 620 delivers accurate airflow readings while also displaying air velocity, differential pressure, temperature, humidity, and atmospheric pressure. The removable measuring module can be used independently as a micromanometer with a Pitot tube attachment, adding versatility for advanced HVAC testing and balancing applications.
Designed for field efficiency, the DBM 620 features Bluetooth connectivity for use with the SmartKap mobile app, automatic extraction and supply airflow detection, Air Change Rate (ACR) calculations, and support for multiple hood configurations. Its lightweight folding frame, transparent hood window, and quick-change design help technicians perform airflow measurements faster while maintaining accuracy across a wide range of commercial HVAC systems.
Key Features & Benefits
- Measuring range from 21 to 2501 CFM
- Displays up to four parameters simultaneously, including airflow, air velocity, temperature, humidity, pressure, and atmospheric pressure
- 24-point measurement grid improves measurement consistency across the entire airflow area
- Automatic airflow direction recognition for supply and exhaust measurements
- Air Change Rate (ACR) calculations for ventilation verification
- Automatic or point-by-point averaging for consistent measurement results
- Bluetooth 4.2 connectivity for use with the SmartKap mobile app
- Quick-change hood system supports multiple hood configurations
- Transparent viewing window helps ensure proper hood positioning
- Patented folding frame and compact hood design for easier transport and storage
- Flow straightener design improves measurement accuracy across a variety of diffuser styles
- Includes a durable transport case for field use
Specs
| Parameter | Accuracy | Measuring Range | Resolution |
|---|---|---|---|
| Airflow (calculated parameter) |
±3% of the measurement ±6 CFM ±3% of the measurement ±10 m3/h ±3% of the measurement ±3 L/s |
From 21 to 2501 CFM From 35 to 4250 m3/h From 10 to 1181 L/s |
1 CFM 1 m3/h 1 L/s |
| Air velocity (calculated parameter) |
±3% of the measurement ±8 ft/min ±3% of the measured value ±0.04 m/s |
From 39 to 1969 ft/min From 0.2 to 10 m/s |
1 ft/min 0.01 m/s up to 3 m/s and 0.1 m/s above |
| Temperature (NTC) |
±0.36°F ±0.2°C |
From -4 to 158°F From -20 to 70°C |
0.1°C |
| Relative humidity (capacitive sensor) |
Repeatability, linearity: ±1.5% RH From 10 to 80% RH and from 10 to 50°C Hysteresis: 0.8% RH at 25°C Time drift: <0.5% RH per year in normal conditions of use From 5 to 50°C and from 20 to 80% RH, apart from indoor pollutants |
From 0 to 100% RH | 0.1% RH |
| Atmospheric pressure | ±3 hPa | From 700 to 1100 hPa | 1 hPa |
| Pressure |
±0.2% of reading ±0.008 inWg ±0.2% of reading ±2 Pa |
From -10 to +10 inWg From -2500 to +2500 Pa |
0.001 inWg From 0.001 to 0.1 Pa |
General Specifications |
| Display | On smartphone or tablet | ||
| Integrated support for smartphone or tablet | Adjustable integrated support Smartphone or tablet max. dimensions: 10" | ||
| Maximum operating pressure | 500 mbar | ||
| Storage capacity | Standard size of a measurement dataset report: 1 Mo | ||
| Housing | Shock-proof made of ABS | ||
| Power supply | 4 alkaline batteries LR6 AA 1.5V | ||
| Battery life | Up to 30 hours | ||
| Auto-shut-off | Adjustable from 0 to 60 minutes | ||
Includes
- (1) Base with Measurement Grid plus Temperature and Hygrometry Probes
- (1) Removable Measuring Unit with Bluetooth
- (1) Hood of 2 x 2 ft (610 x 610 mm) with Flow Straightener and Foldable Frame
- (1) Sheath with 4 Frame Fixing Rods
- (2) 0.80 m of Silicone Tube
- (1) Pack of Replacement Hinges for Frames
- (1) Transport Case
- (1) Calibration Certificate
Sauermann DBM 620 Air Flow Meter Manual
Software / App
Download the SmartKap Mobile App for your Android or iOS devices
The DBM 620 Air Flow Meter comes equipped with the SmartKap mobile app. You can use SmartKap to connect to your DBM 620 via the Bluetooth protocol, allowing you to configure the device, as well as visualize and save its measurements.
- Helps to correctly position the hood on the air vent
- Measurement dataset records
- Used for device configuration
- ACR function (Air Change Rate), renewal rate calculation
