testo 400 IAQ Kit - for Commissioning and IAQ investigation professionals

The testo 400 IAQ kit is the universal measuring instrument for all Commissioning and IAQ professionals, enabling them to measure, document, and analyze all IAQ parameters with just one instrument.

Smart support through stored measurement menus and evaluation of measuring values according to the traffic light principle – for error-free measurements
Manage all the relevant customer data, including measuring points, directly in the instrument - work directly and efficiently on site
Complete and send measuring values with full documentation, including photos, comments and your own logo directly on site – get to the next job faster
Probe heads can be changed without restarting the instrument – easy handling with no lost time
Calibration of probes which is independent of the measuring instrument and adjustment function at up to six measuring points for zero-error display – fewer downtimes and high-precision measurements

As consultants, experts, technical service providers, or service technicians in the air conditioning and ventilation sector, the testo 400 therefore supports you in the truly smart performance of your measuring tasks. Relevant quality parameters in industrial production and manufacturing processes can also be reliably and accurately checked using the testo 400.

Temperature - NTC	Measuring range -40.0° to 302.0 °F / -40 to +150 °C
Accuracy ±0.5 % of mv ±1 Digit (Remaining Range) ±0.4 °F ±1 Digit (-13° to 166.8 °F) / ±0.2 °C ±1 Digit (-25 to +74.9 °C) ±0.7 °F ±1 Digit (-40° to -13.2 °F) / ±0.4 °C ±1 Digit (-40 to -25.1 °C) ±0.7 °F ±1 Digit (75° to 211.8 °F) / ±0.4 °C ±1 Digit (+75 to +99.9 °C)
Resolution 0 °F / 0.1 °C

Measuring range

-40.0° to 302.0 °F / -40 to +150 °C

Accuracy

±0.5 % of mv ±1 Digit (Remaining Range)

±0.4 °F ±1 Digit (-13° to 166.8 °F) / ±0.2 °C ±1 Digit (-25 to +74.9 °C)

±0.7 °F ±1 Digit (-40° to -13.2 °F) / ±0.4 °C ±1 Digit (-40 to -25.1 °C)

±0.7 °F ±1 Digit (75° to 211.8 °F) / ±0.4 °C ±1 Digit (+75 to +99.9 °C)

Resolution

0 °F / 0.1 °C

Temperature - Type K TC	Measuring range -328.0° to 2498.0 °F / -200 to +1370 °C
Accuracy ±(0.5 °F + 0.1 % of mv) ±1 Digit / ±(0.3 °C + 0.1 % of mv) ±1 Digit
Resolution 0.1 °F / 0.1 °C

Measuring range

-328.0° to 2498.0 °F / -200 to +1370 °C

Accuracy

±(0.5 °F + 0.1 % of mv) ±1 Digit / ±(0.3 °C + 0.1 % of mv) ±1 Digit

Resolution

0.1 °F / 0.1 °C

Differential pressure (internal sensor) - Piezoresistive	Measuring range 0 to +80 InH₂O / 0 to +200 hPa
Accuracy ±(0.0 InH₂O + 1.5 % of mv) ±1 Digit (10.000 to 80 InH₂O) / ±(0.1 hPa + 1.5 % of mv) ±1 Digit (25.001 to 200 hPa) ±(0.0 InH₂O + 1 % of mv) ±1 Digit (0 to 25 InH₂O) / ±(0.3 Pa + 1 % of mv) ±1 Digit (0 to 25 hPa)
Resolution 0.000 InH₂O / 0.001 hPa

Measuring range

0 to +80 InH₂O / 0 to +200 hPa

Accuracy

±(0.0 InH₂O + 1.5 % of mv) ±1 Digit (10.000 to 80 InH₂O) / ±(0.1 hPa + 1.5 % of mv) ±1 Digit (25.001 to 200 hPa)

±(0.0 InH₂O + 1 % of mv) ±1 Digit (0 to 25 InH₂O) / ±(0.3 Pa + 1 % of mv) ±1 Digit (0 to 25 hPa)

Resolution

0.000 InH₂O / 0.001 hPa

Absolute Pressure (internal sensor and external probe)	Measuring range 280 to 440 InH₂O / 700 to 1100 hPa
Accuracy ±1 InH₂O / ±3 hPa
Resolution 0.1 InH₂O / 0.1 hPa

Measuring range

280 to 440 InH₂O / 700 to 1100 hPa

Accuracy

±1 InH₂O / ±3 hPa

Resolution

0.1 InH₂O / 0.1 hPa

General technical data	Weight 17.99 oz. (instrument) / 510 g (instrument)
Dimensions 8.3 x 3.7 x 1.5 in. ((LxWxH)) / 210 x 95 x 39 mm ((LxWxH))
Operating temperature 23.0° to 113.0 °F / -5 to +45 °C
Housing 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 -4.0° to 140.0 °F / -20 to +60 °C
*TUC connection (Testo Universal Connector): For the connection of fixed cable digital probes and NTC probes.

Weight

17.99 oz. (instrument) / 510 g (instrument)

Dimensions

8.3 x 3.7 x 1.5 in. ((LxWxH)) / 210 x 95 x 39 mm ((LxWxH))

Operating temperature

23.0° to 113.0 °F / -5 to +45 °C

Housing

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

-4.0° to 140.0 °F / -20 to +60 °C

*TUC connection (Testo Universal Connector): For the connection of fixed cable digital probes and NTC probes.

General technical data	Weight 98.77 oz. / 2800 g
Dimensions 20.5 x 16.1 x 6.3 in. LxWxH / 520 x 410 x 160 mm LxWxH
Housing Plastic
Product colour Black

Weight

98.77 oz. / 2800 g

Dimensions

20.5 x 16.1 x 6.3 in. LxWxH / 520 x 410 x 160 mm LxWxH

Housing

Plastic

Product colour

Black

Ambient CO	Measuring range 0 to 100 ppm 100.1 to 500 ppm
Accuracy ±10 % of mv (100.1 to 500 ppm) ±5 ppm (30.1 to 100 ppm) ±3 ppm (0 to 30 ppm)
Resolution 0.1 ppm

Measuring range

0 to 100 ppm

100.1 to 500 ppm

Accuracy

±10 % of mv (100.1 to 500 ppm)

±5 ppm (30.1 to 100 ppm)

±3 ppm (0 to 30 ppm)

Resolution

0.1 ppm

General technical data	Storage temperature -4° to 122 °F / -20 to +50 °C (recommended: 14° to 86 °F) / (recommended: -10 to +30 °C)
Weight 5.6 oz. / 160 g
Dimensions 7.9 x 2.0 x 1.6 in. / 200 x 50 x 40 mm
Operating temperature 23° to 122 °F / -5 to +50 °C
Length probe shaft 1.181 in. / 30 mm
Probe head diameter 1.181 in. / 30 mm
Product colour black/orange
Battery type 4 x AA batteries
Battery life 70 h
Data transfer Bluetooth®
Radio range 65.616 ft. / 20 m

Storage temperature

-4° to 122 °F / -20 to +50 °C

(recommended: 14° to 86 °F) / (recommended: -10 to +30 °C)

Weight

5.6 oz. / 160 g

Dimensions

7.9 x 2.0 x 1.6 in. / 200 x 50 x 40 mm

Operating temperature

23° to 122 °F / -5 to +50 °C

Length probe shaft

1.181 in. / 30 mm

Probe head diameter

1.181 in. / 30 mm

Product colour

black/orange

Battery type

4 x AA batteries

Battery life

70 h

Data transfer

Bluetooth®

Radio range

65.616 ft. / 20 m

Temperature - NTC	Measuring range 32° to 122 °F / 0 to +50 °C
Accuracy ±0.9 °F / ±0.5 °C
Resolution 0.1 °F / 0.1 °C

Measuring range

32° to 122 °F / 0 to +50 °C

Accuracy

±0.9 °F / ±0.5 °C

Resolution

0.1 °F / 0.1 °C

Humidity - Capacitive	Measuring range 5 to 95 %rH
Accuracy Hysteresis: ±1.0 %rH ±3 %rH (65 to 90 %rH) ±2 %rH (35 to 65 %rH) ±5 %rH (Remaining Range) long-term stability: ±1 %RH / year ±0.06 %rF/K (32° to +122 °F) / ±0.06 %RH/K (0 to +50 °C) ±3 %rH (10 to 35 %rH)
Resolution 0.1 %rH

Measuring range

5 to 95 %rH

Accuracy

Hysteresis: ±1.0 %rH

±3 %rH (65 to 90 %rH)

±2 %rH (35 to 65 %rH)

±5 %rH (Remaining Range)

long-term stability: ±1 %RH / year

±0.06 %rF/K (32° to +122 °F) / ±0.06 %RH/K (0 to +50 °C)

±3 %rH (10 to 35 %rH)

Resolution

0.1 %rH

Absolute Pressure	Measuring range +280 to +440 InH₂O / +700 to +1100 hPa
Accuracy ±1.2 InH₂O / ±3.0 hPa
Resolution 0.1 InH₂O / 0.1 hPa

Measuring range

+280 to +440 InH₂O / +700 to +1100 hPa

Accuracy

±1.2 InH₂O / ±3.0 hPa

Resolution

0.1 InH₂O / 0.1 hPa

Ambient CO₂	Measuring range 0 to 10000 ppm
Accuracy ±(100 ppm + 5 % of mv) (5001 to 10000 ) ±(50 ppm + 3 % of mv) (0 to 5000 )
Resolution 1 ppm

Measuring range

0 to 10000 ppm

Accuracy

±(100 ppm + 5 % of mv) (5001 to 10000 )

±(50 ppm + 3 % of mv) (0 to 5000 )

Resolution

1 ppm

General technical data	Storage temperature -4° to 140 °F / -20 to +60 °C
Weight 6.9 oz. / 195 g
Dimensions 11.6 x 2.0 x 1.6 in. / 295 x 50 x 40 mm
Operating temperature 23° to 122 °F / -5 to +50 °C
Length probe shaft 5.118 in. / 130 mm
Probe head diameter 1.181 in. / 30 mm
Product colour black/orange
Battery life 21,5 h
Battery type 4 x AA batteries
Data transfer Bluetooth®
Radio range 65.616 ft. / 20 m

Storage temperature

-4° to 140 °F / -20 to +60 °C

Weight

6.9 oz. / 195 g

Dimensions

11.6 x 2.0 x 1.6 in. / 295 x 50 x 40 mm

Operating temperature

23° to 122 °F / -5 to +50 °C

Length probe shaft

5.118 in. / 130 mm

Probe head diameter

1.181 in. / 30 mm