Eigenschaften
Number of inputs	2

The CA 1822 from Chauvin Arnoux is a compact, portable thermometer with integrated data logger function, specifically designed for temperature measurement via thermocouples. It features two inputs and supports thermocouple types J, K, T, N, E, R, and S, making it suitable for a wide range of applications in industry, laboratories, or field use. The device is designed for both stationary and mobile use, with the integrated magnetic holder and compatibility with Multifix accessories enabling flexible mounting. The large, backlit display ensures good readability even in poor lighting conditions.

Applications include process monitoring in manufacturing, testing of heating and cooling systems, quality control in the food industry, and maintenance of machines and plants. The measurement ranges vary depending on the thermocouple type, from -250 °C to +1767 °C, with resolution varying between 0.1 °C and 1 °C depending on the temperature range. Below 1000 °C, a resolution of 0.1 °C is displayed; above 1000 °C, the resolution is 1 °C. The accuracy for types J, K, T, N, and E is ± (0.2 % of displayed value + 0.6 °C) below -100 °C, ± (0.15 % of displayed value + 0.6 °C) between -100 °C and +100 °C, and ± (0.1 % of displayed value + 0.6 °C) above +100 °C. For types R and S, the deviation is ± (0.15 % of displayed value + 1.0 °C) below +100 °C and ± (0.1 % of displayed value + 1.0 °C) above.

Functions and equipment in detail include display of minimum and maximum values, HOLD function, temperature difference (ΔT), and adjustable alarm limits. Alarms are visually indicated on the device and can be configured via software. Data recording can be performed manually or programmed, with start and stop of recording possible directly on the device or via a pre-set schedule. The storage capacity exceeds 1 million measurement points, enabling long-term data acquisition.

Technology explained simply shows that the device features USB and Bluetooth interfaces to connect to a PC or Android device. The *Data Logger Transfer* software enables configuration of recording parameters, data analysis, and report generation. Power supply is via three alkaline batteries (LR6) or rechargeable NiMH batteries. Optionally, the device can be powered via a power adapter or Micro-USB. The autonomy is 1000 hours in portable mode, and up to 3 years when recording with a 15-minute interval.

Compatibility and accessories include various sensors, such as the SK20 flexible sensor (-40 °C to +450 °C), the SK7 ambient temperature sensor (-50 °C to +250 °C), or the SK1 needle sensor (-50 °C to +800 °C). Extensions such as CK1, CK2, and CK3 (each 1 m, operating range -40 °C to +100 °C) and flexible sensors like SK2, SK3, SK6, and SK8 are available. Additional accessories include a fast charging set, transport case and bag, shock protection sleeve, and a modem for Bluetooth-BLE/USB connection.

Mounting and installation is simple via the integrated magnetic holder, which allows the device to be attached to metallic surfaces. Compatibility with Multifix accessories expands mounting options. Operation is designed with an intuitive button logic, with each button assigned to a specific function. Display backlighting and automatic shutdown (adjustable) support field operation.

Operational advantages lie in the combination of high measurement accuracy, large storage capacity, and long operating life. The ability to trigger recording via alarm thresholds enables reactive data acquisition. The IP54 protection rating protects the housing against dust and splashing water, enabling use outdoors or in humid environments. The device's operating temperature range is -10 °C to +60 °C at relative humidity from 10 % to 90 % RH. Compliance with standards IEC 61010-1 and IEC 61326-1 ensures safety and electromagnetic compatibility. Batteries are not included in the delivery scope.