Datasheet
The testo 400 is the universal measuring instrument for all IAQ professionals. Measure, analyze and document all IAQ and comfort level parameters using just one instrument – simply, conveniently and in compliance with the standards. High-quality measuring technology, intuitive measurement assistants, versatile documentation options and a comprehensive selection of IAQ probes make the testo 400 the perfect partner for your day-to-day work.
testo 400 universal IAQ instrument – features
Impressive IAQ measurement technology
- High-precision, location-independent, built-in differential pressure sensor
- Integrated absolute pressure sensor
- Measures all IAQ-related parameters: Flow velocity, temperature, humidity, pressure, illuminance, radiant heat, turbulence, CO2 and CO
- Numerous connection options for probes: 2 x cable probes (TUC), 4 x Bluetooth® probes, 2 x type K thermocouple probes
- Compatible with a wide range of available Bluetooth® and cable probes – so you’ll be equipped for any measuring task
- Compatible with the testo 420 volume flow hood: Simply connect to the testo 400 via Bluetooth, measure volume flow at larger air inlets and outlets and manage all customer and measuring site data on site using one measuring instrument
- For high-precision measurements and less downtime: Adjustment function at up to six measuring points for zero-error display, probe heads can be replaced without restarting the IAQ measuring instrument, high-quality probes with an intelligent calibration concept (probe calibration independent of the measuring instrument)
- Long-term monitoring of the indoor air quality: Order the IAQ data logger for carrying out long-term measurements with the testo 400 IAQ measuring instrument. While the stand-alone data logger is carrying out the IAQ measurement, you can use the IAQ measuring instrument for measurements elsewhere
Smart, intuitive, practical: Measurement programs, measurement data management and operation
- For error-free measurements in accordance with the standards: Smart, intuitive measurement menus and evaluation of readings provide optimum support for your measuring task. Use the measurement programs for standard-compliant measurements: HVAC grid measurement as per EN ISO 12599 and ASHRAE 111, PMV/PPD as per EN ISO 7730 and ASHRAE 55, draught and turbulence as per EN ISO 7730 and ASHRAE 55, WBGT measurement as per DIN 33403 and EN ISO 7243, NET measurement as per DIN 33403
- Complete the measurement along with full documentation including photos, comments and your own logo at the customer’s premises, and send by e-mail (via WLAN)
- Customer and measuring point management is carried out on the measuring instrument itself – for efficient work on site.
- Smart-touch display for intuitive operation of the IAQ measuring instrument
- testo DataControl PC software for further analysis, archiving and documentation of measurement data on your computer
- Built-in WLAN and Bluetooth® interfaces: Send measurement reports directly on site or print them out with a suitable printer
Delivery Scope
Technical Data
| Temperature – NTC | |
|---|---|
| Measuring range | -40 to +150 °C |
| Accuracy | ±0.2 °C ±1 Digit (-25 to +74.9 °C)
±0.4 °C ±1 Digit (-40 to -25.1 °C) ±0.4 °C ±1 Digit (+75 to +99.9 °C) ±0.5 % of mv ±1 Digit (Remaining Range) |
| Resolution | 0.1 °C |
| Temperature – TC Type K (NiCr-Ni) | |
|---|---|
| Measuring range | -200 to +1370 °C |
| Accuracy | ±(0.3 °C + 0.1 % of mv) ±1 Digit |
| Resolution | 0.1 °C |
| Differential pressure (internal sensor) – Piezoresistive | |
|---|---|
| Measuring range | 0 to +200 hPa |
| Accuracy | ±(0.3 Pa + 1 % of mv) ±1 Digit (0 to 25 hPa)
±(0.1 hPa + 1.5 % of mv) ±1 Digit (25.001 to 200 hPa) |
| Resolution | 0.001 hPa |
| Absolute Pressure (internal sensor and external probe) | |
|---|---|
| Measuring range | 700 to 1100 hPa |
| Accuracy | ±3 hPa |
| Resolution | 0.1 hPa |
| General technical data | |
|---|---|
| Weight | 510 g (instrument) |
| Dimensions | 210 x 95 x 39 mm ((LxWxH)) |
| Operating temperature | -5 to +45 °C |
| Product-/housing material | Plastic |
| Protection class | IP40 |
| Connectable probes | 4 x digital Bluetooth® probe or testo Smart Probe; 2 x digital probe with fixed cable or temperature probe NTC with fixed cable (via Testo Universal Connector – TUC); 2 x temperature probe TC type K with fixed cable |
| Product colour | black/orange |
| Camera image size | Main camera: 8.0 MP; Front camera: 5.0 MP |
| Battery life | approx. 10 hrs continuous operation |
| Display type | 5.0″ touch display, HD 1280*720 pixels, IPS (160 k) |
| Power supply | Rechargeable li-ion battery (5550 mAh) |
| Interface | Bluetooth®; USB; WLAN |
| Memory | 2 GB; 1,000,000 measuring values |
| Storage temperature | -20 to +60 °C |
*TUC connection (Testo Universal Connector): For the connection of fixed cable digital probes and NTC probes.
Applications
IAQ measurements in the field of air conditioning and ventilation
- High-precision, location-independent and built-in differential pressure sensor, smart and intuitive measurement programs for IAQ measurements in accordance with the standards, creation of documentation on site, e-mailing of reports, versatile combination options with IAQ probes
IAQ measurements in the field of air conditioning and ventilation
Custom-combine your Testo IAQ measuring instrument with IAQ probes and accessories for your application.
With the right products, you can handle all kinds of IAQ applications:
- Air flow measurements: Flow measurements in ducts, at outlets and on filters as per EN ISO 12599 and ASHRAE 111
- Comfort level measurements: Measurement of indoor air quality or turbulence as per EN ISO 7730 and ASHRAE 55, NET measurement as per DIN 33403, PMV/PPD as per EN ISO 7730 and ASHRAE 55, WBGT measurement as per DIN 33403 and EN ISO 7243
- Measurements in laboratories and cleanrooms: Flow measurements in fume cupboards as per DIN EN 14175-3/-4, differential pressure measurements and laminar flow measurements in cleanrooms, humidity measurements in cleanrooms
