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Chauvin Arnoux CA1823 Datalogging Pt100 and Pt1000 Thermometer

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Important note: this thermometer is designed for use with Pt100 or Pt1000 temperature sensors. These are NOT included as standard with the thermometer.

Chauvin Arnoux's CA1823 is a single input, simple-to-use, logging digital thermometer ideal for use in many different temperature applications.

Compatible with Pt100 and Pt1000 resistance probes, the uses for the CA1823 depend entirely on which probe is used; for example, you could use an air probe to measure air temperatures, or a surface probe to measure the temperature of a specific surface.

This is a datalogging digital thermometer - you can configure the sampling rate (the time at which the measurements are logged) as well as set start/end times for the logging session using Chauvin Arnoux's software. You can then simply mount the CA1823 in an area where you need to measure (it even includes a built-in magnet for hands-free mounting) and leave it to log over the time period. Once done, plug the thermometer into your PC by USB or over wireless using Bluetooth, download the results and analyse your findings using the software package.

Up to 1 million individual records can be stored in the CA1823's internal memory and thanks to exceptional long battery life of up to 3 years in recording mode, this thermometer is ideal for any lengthy logging session.

This digital thermometer also includes a backlit LCD display the ability to set alarm thresholds with visual alerts or triggered recording when the limits are exceeded.

Chauvin Arnoux CA1823 Digital Thermometer Key Features

  • Handheld, easy-to-use digital thermometer designed for use with Pt100 and Pt1000 temperature sensors (sold separately)
  • Single input - one port for attachment of one probe
  • Datalogging thermometer - store up to 1 million records in internal memory and download to PC via USB or Bluetooth
  • User-configurable logging rate from 1 minute to 2 hours
  • Set a programmed start and end date for logging sessions
  • Adjustable alarm thresholds with visual alerts and triggered recording
  • MIN/MAX function calculates maximum and minimum values over a period of time
  • Data hold function temporarily freezes current values shown on the screen
  • Built-in backlight for use in poor lighting conditions
  • Automatic power off function (can be adjusted and disabled)
  • Built-in intergral magnet for hands-free mounting on a metallic surface
  • Extra-long battery life of up to 3 years in recording mode on a 15 minutes interval

What's Included?

  • Chauvin Arnoux CA1823 Thermometer
  • Carrying Bag
  • 3 x 1.5V AA Alkaline Batteries
  • USB Cable
  • Test Report
  • Quick Startup Guide

Software can be downloaded from Chauvin Arnoux's website.

Optional Sensor Probes

Please note that the CA1823 does not include any Pt100 or Pt1000 sensors as standard.

These can be ordered separately - please call our sales team quoting a part number below if you are interested.

Part NumberDescriptionMeasurement RangeTolerance Class63% Response TimePlunger DiameterPlunger Length
P01655020 General purpose sensor with stainless steel sheath -40 to 450°C Class A 7 seconds 3mm 20cm
P03652712 Surface sensor with spring -50 to 200°C Class B 6 seconds 5mm 13cm
P03652713 Stainless steel needle sensor for penetration -100 to 600°C Class B 7 seconds 3mm 13cm
P03652714 Air sensor -100 to 600°C Class B 5 seconds 5mm 13cm
P03652715 Stainless steel sensor for immersion -100 to 600°C Class B 7 seconds 3mm 13cm

Class A: 0.15°C + 0.002 x [t]°C
Class B: 0.3°C + 0.005 x [t]°C Miniature flat-pin connector, 3 poles ∙ Spiral cable: 45 cm to 1m

Part CodeP01654823

Chauvin Arnoux CA1823 Technical Specifications

Measurement Range - 100 to + 400°C
-148 to + 752°F
Resolution Display in °C : 0.1°C
Display in °F : 0.1°F
Intrinsic Uncertainty in Degrees C ± (0.4% R + 0.3°C)
Recording Manual start/stop on the product
Short press on MEM: spot recording / Long press on REC: recording at the rate of the current mode
Programmed recording
Start date, recording rate (interval from 1 minute to 2 hours) and end date can be customized with the PC software
Alarms Alarm thresholds set using the software. Visual alert on the product in the event of an overrun
Recording can be triggered on alarm thresholds
Data Storage More than 1 million points
Units Celsius or Fahrenheit (selectable)
Backlight Yes
Automatic Power Off Yes (configurable)
Power Supply
Type 3 x 1.5V AA / LR6 alkaline batteries
Mains connection possible using optional mains/micro USB adapter
Battery Life 1000 hours (portable mode)
3 years for recording (assumes 15 minute measurement interval)
Physical Specifications
Interfaces 2: Bluetooth and USB

Casing equipped with a magnet, a wall-mount system and a slot for suspension of the thermometer.
Compatible with Multifix accessory. Sheath available as accessory

Connections Compensated miniature female connectors
Dimensions 150 x 72 x 32mm
Weight 260g (with batteries)
Ingress Protection IP54 (casing)
Product Operating Range Temperature from -10 to +60°C
Humidity from 10 to 90% RH
Other Specifications
Windows Data Logger Transfer Software Functions Real-time mode
Automatic report generation in Word format
Data format compatible with Dataview software
Graph or value-table presentation
Data export in graph or Excel table format
Warranty 2 years
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