testo 400 kit – Air flow measurement with thermal fiber probe

Ideal measuring kit for IAQ (indoor air quality) professionals, focused on air flow measurement. testo 400 set with intuitive measurement menus, one thermal fiber probe (including temperature and humidity sensor), one vane probe (Ø 100 mm) and one main temperature/humidity probe high body. All three probes can be attached to the included Bluetooth handle. For measurements at ceiling ventilation openings, simply combine the 100 mm vane measuring head with a telescopic tube section (extendable up to 1 m) and a 90° connection angle.

Features of the air flow meter with testo 400 thermal fiber probe

Determine air flow rate in ducts according to EN ISO 12599 and ASHRAE 111 standards

Determine the air flow rate at the ventilation ports by measuring the standard pressure and entering the manufacturer's own K-factor

Intuitive, intelligent measurement menu, complete your measurements with full field documentation. Or conduct further analysis with DataControl measurement data management and analysis software

Kit includes: testo 400 multi-function IAQ meter, thermal fiber probe (with Bluetooth handle and telephoto tube), vane probe (Ø 100 mm), precise temperature/humidity probe tall and suitcase

Technical specifications of testo 400 kit (0563 0400 71)

testo 400 – multi-function IAQ measuring instrument (0560 0400)

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 measurement value ±1 digit (Remaining measurement range)
Resolution	0.1 °C

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 measurement value ±1 digit (Remaining measurement range)

Resolution

0.1 °C

Temperature – TC Type K (NiCr-Ni)
Measuring range	-200 to +1370 °C
Accuracy	±(0.3 °C + 0.1 % of measured value) ±1 digit
Resolution	0.1 °C

Differential pressure (internal sensor) – Piezoresistive
Measuring range	0 to +200 hPa
Accuracy	±(0.3 hPa + 1 % measured value) ±1 digit (0 to 25 hPa) ±(0.1 hPa + 1.5 % measured value) ±1 digit (25.001 to 200 hPa)
Resolution	0.001 hPa

Differential pressure (internal sensor) – Piezoresistive

Measuring range

0 to +200 hPa

Accuracy

±(0.3 hPa + 1 % measured value) ±1 digit (0 to 25 hPa)

±(0.1 hPa + 1.5 % measured value) ±1 digit (25.001 to 200 hPa)

Resolution

0.001 hPa

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

Thermal fiber air flow meter (digital) – Bluetooth including temperature/humidity sensor (0635 1571)

Temperature – NTC

Measuring range

-20 to +70 °C

Accuracy

±0.5 °C (0 to +70 °C)

±0.8 °C (-20 to 0 °C)

Resolution

0.1 °C

Humidity – Capacitance
Measuring range	5 to 95 %rh
Accuracy	±3 %rh (10 to 35 %rh) ±2 %rh (35 to 65 %rh) ±3 %rh (65 to 90 %rh) ±5 %rh (Remaining range) ±0.06 %RH/K (k=1) long-term stability: ±1 %RH / year
Resolution	0.1 %rh

Humidity – Capacitance

Measuring range

5 to 95 %rh

Accuracy

±3 %rh (10 to 35 %rh)

±2 %rh (35 to 65 %rh)

±3 %rh (65 to 90 %rh)

±5 %rh (Remaining range)

±0.06 %RH/K (k=1)

long-term stability: ±1 %RH / year

Resolution

0.1 %rh

Absolute pressure
Measuring range	+700 to +1100 hPa
Accuracy	±3.0 hPa
Resolution	0.1 hPa

Velocity – thermal filament
Measuring range	0 to 50 m/s
Accuracy	±(0.03 m/s + 4 % of measured value) (0 to 20 m/s) ±(0.5 m/s + 5 % measured value) (20.01 to 30 m/s)
Resolution	0.01 m/s

Velocity – thermal filament

Measuring range

0 to 50 m/s

Accuracy

±(0.03 m/s + 4 % of measured value)

(0 to 20 m/s)

±(0.5 m/s + 5 % measured value)

(20.01 to 30 m/s)

Resolution

0.01 m/s

100 mm vane probe (0635 9430)

Temperature – NTC
Measuring range	-20 to +70 °C
Accuracy	±0.5 °C
Resolution	0.1 °C

Velocity/flow
Measuring range	0.3 to 35 m/s
Accuracy	±(0.1 m/s + 1.5 % of measured value) (0.3 to 20 m/s) ±(0.2 m/s + 1.5 % of measured value) (20.01 to 35 m/s)
Resolution	0.01 m/s

Velocity/flow

Measuring range

0.3 to 35 m/s

Accuracy

±(0.1 m/s + 1.5 % of measured value) (0.3 to 20 m/s)

±(0.2 m/s + 1.5 % of measured value) (20.01 to 35 m/s)

Resolution

0.01 m/s

High precision humidity/temperature probe (0636 9770)

Temperature – NTC

Measuring range

-20 to +70 °C

Accuracy

±0.3 °C (+15 to +30 °C)

±0.5 °C (Remaining range)

Resolution

0.1 °C

Humidity – Capacitance
Measuring range	0 to 100 %rh
Accuracy	±(0.6 %rh + 0.7 % of measured value) (0 to 90 %rh) ±(1.0 %rh + 0.7 % of measured value) (90 to 100 %rh) ±0.03 %RH/K (k=1) long-term stability: ±1 %RH / year
Resolution	0.01 %rh

Humidity – Capacitance

Measuring range

0 to 100 %rh

Accuracy

±(0.6 %rh + 0.7 % of measured value) (0 to 90 %rh)

±(1.0 %rh + 0.7 % of measured value) (90 to 100 %rh)

±0.03 %RH/K (k=1)

long-term stability: ±1 %RH / year

Resolution

0.01 %rh