Eigenschaften
Dimensions, weight	150 x 72 x 32 mm
Weight	260 g

The Chauvin Arnoux CA 1550 micro manometer is a compact measuring instrument for precise measurement of differential pressure, air velocity, and air flow rate in heating, ventilation, and air conditioning systems. It is suitable for technical inspections and maintenance work, where the function of air outlets, throttling elements, or filters must be checked. The device is characterised by high measurement accuracy and versatile applications, with measurement values displayed in various units.

Applications

The CA 1550 is particularly used in the field of building and plant technology, where monitoring of pressure conditions and air flows is important. This includes testing ventilation systems, checking filter contamination in air treatment systems, and measuring pressure losses at throttling dampers. The integrated temperature and atmospheric pressure compensation increases measurement accuracy, especially under varying environmental conditions.

Functions and Equipment in Detail

The device enables differential pressure measurements in the range of -2 450 to +2 450 Pa with a resolution of 0.1 Pa below 200 Pa and 1 Pa above. The precision is ± 0.5 % of full scale ± 1 digit. Additionally, air velocities from 2 to 60 m/s and air flow rates from 0.00 to 9 999 m³/h can be measured, with a Pitot tube required as accessory. Functions include minimum, maximum, and average value display, HOLD, Auto-Zero, and a MAP mode for displaying multi-point average values as a graph. Measurement values can be recorded manually or programmed, with memory capacity sufficient for over 1 million measurement points.

Technology Explained Simply

Temperature compensation is performed either manually or automatically via an input for a K-thermocouple, increasing measurement accuracy at different ambient temperatures. Automatic compensation for atmospheric air pressure ensures consistent results regardless of current air pressure conditions. The display is illuminated and simultaneously shows differential pressure, air velocity, air flow rate, air pressure, or temperature. Units can be selected between Pa, PSI, hPa, mbar, mmHg, inHg, mmH2O, inH2O, m/s, km/h, fpm, mph, m³/s, m³/h, l/s, cfm, °C, and °F.

Compatibility and Accessories

The CA 1550 is equipped with a magnetic holder and is compatible with Multifix accessories, allowing flexible mounting—for example, on metal surfaces or in a tripod. Accessories include a Pitot tube (length 324 mm, inlet Ø 8 mm), a transparent hose (length 2 m, inner Ø 5 mm), an SK6 flexible sensor (-50 °C to +285 °C), a transport case, a USB power adapter, a quick charge set (quick charger + 4 NiMH AA batteries), a shock protection case with Multifix, and a Bluetooth BLE / USB modem for PC. Communication occurs via USB or Bluetooth, with the device recognised as a USB stick, enabling seamless file transfer.

Installation and Mounting

The device can be used as a handheld instrument, but can also be set up stationary, attached to metal surfaces using the integrated magnetic holder, or mounted using Multifix accessories. Operation is via buttons on the device, with recording controlled manually via a Start/Stop button or programmed via PC software. Automatic shutdown is adjustable to extend battery life.

Operational Advantages

The high memory capacity of over 1 million measurement points enables long-term measurements without data loss. The combination of manual and programmed recording, along with the ability to transfer measurement values to a PC or smartphone via USB or Bluetooth, simplifies evaluation and documentation. The integrated Data Logger Transfer software allows graphical representation of data, device configuration, and report generation in Word format. The Android app CA Environmental Logger supports smartphone use. The device is designed for use at temperatures from -10 °C to +50 °C and relative humidity from 10 % to 90 %. Power supply is via 3 AA alkaline batteries or rechargeable NiMH batteries, with battery life up to 500 hours in manual use. In automatic recording mode with a measurement interval of 15 minutes, the battery can last up to 3 years. Dimensions are 150 x 72 x 32 mm, weight 260 g.

Functions and Applications

The CA 1550 is designed for technical professionals performing precise measurements in building and plant technology. The combination of differential pressure measurement, air velocity and air flow rate measurement, integrated data storage, and communication options via USB and Bluetooth make it a versatile tool. Temperature and air pressure compensation ensure reliable results, even under variable environmental conditions. The ability to display measurement values in various units facilitates interpretation and documentation. The integrated magnetic holder and compatibility with Multifix accessories increase flexibility in mounting and use of the device.

Accessories and Extensions

Additional accessories such as the Pitot tube, flexible sensor SK6, transparent hose, transport case, quick charge set, USB power adapter, shock protection case with Multifix, and Bluetooth modem extend the functionality of the CA 1550. These components allow application-specific adaptation of the device, for example for measurements in confined spaces, at high temperatures, or for mobile use scenarios. The DataView software and the Android app CA Environmental Logger support data analysis and documentation.

Operational Safety and Environmental Conditions

The device is designed for indoor use, with operating temperature from -10 °C to +50 °C and relative humidity from 10 % to 90 %. The integrated automatic shutdown extends battery life. Power supply is via 3 AA batteries or rechargeable NiMH batteries, with battery life varying depending on operating mode. Dimensions of 150 x 72 x 32 mm and weight of 260 g make the device compact and easy to transport.

Data Transfer and Software

Data transfer occurs via USB or Bluetooth. Via USB, the device is recognised as a USB stick, enabling simple file transfer. The Data Logger Transfer software allows graphical representation of measurement values, device configuration, real-time monitoring, and report generation in Word format. The Android app CA Environmental Logger supports smartphone use and enables mobile data transfer and evaluation.

Accessories and Extensions

Additional accessories such as the Pitot tube, flexible sensor SK6, transparent hose, transport case, quick charge set, USB power adapter, shock protection case with Multifix, and Bluetooth modem extend the functionality of the CA 1550. These components allow application-specific adaptation of the device, for example for measurements in confined spaces, at high temperatures, or for mobile use scenarios. The DataView software and the Android app CA Environmental Logger support data analysis and documentation.

Operational Safety and Environmental Conditions

The device is designed for indoor use, with operating temperature from -10 °C to +50 °C and relative humidity from 10 % to 90 %. The integrated automatic shutdown extends battery life. Power supply is via 3 AA batteries or rechargeable NiMH batteries, with battery life varying depending on operating mode. Dimensions of 150 x 72 x 32 mm and weight of 260 g make the device compact and easy to transport.

Data Transfer and Software

Data transfer occurs via USB or Bluetooth. Via USB, the device is recognised as a USB stick, enabling simple file transfer. The Data Logger Transfer software allows graphical representation of measurement values, device configuration, real-time monitoring, and report generation in Word format. The Android app CA Environmental Logger supports smartphone use and enables mobile data transfer and evaluation.