testo 400

testo 400, multi-functional meas. instr., incl. meas. value store up to 500,000 readings, VAC-module (determination of volume flow with error calc.), battery, Li-cell and calibration protocol

Complex but not complicated
The instrument recognises the respective probe connected and shows the next possible steps in the display.

Measurement data processing with "Retrieval guarantee"
Filing is in a clear tree structure with "Retrieval guarantee" \endash in a large display and, of course, on your PC.

Data memory for monitoring processes
A data memory with up to 48,000 readings is available for long-term measurement. All relevant parameters such as start and finish of measurement, measurement intervals, limits exceeded and date/time can be programmed as required.

  • VAC module for evaluating the measurement directly on site with integrated inaccuracy calulation
  • Assessment of measurement directly on site with built-in uncertainty calculation
  • Display with calculated degree of turbulence, mean air velocity and air temperature
  • 10.0 % turbulence
  • 0.26 m/s
  • 24.4 °C
  • Continue
  • Finish
  • Data communication via PC
  • User friendly operation with cursor via menu structure

 
Probes Accessories Sets Technical Data Brochures  
Description Picture Part no.    
Differential pressure probe
Pitot tube, 350 mm long, stainless steel, measures flow speed
(in combination with pressure probes)
 
0635 2145  
Pitot tube, 1000 mm long, stainless steel, measures flow speed in combination with pressure probes
(Longer versions on request)
 
0635 2345  
Pressure probe in robust metal housing with impact protection, incl. magnet for fast attachment, measures differential pressure and flow speeds (in combination with Pitot tube)
Meas. Range 0 to +100 Pa
 
0638 1347  
Pressure probe, 10 hPa, in robust metal housing with impact protection incl. magnet for fast attachment, to measure differential pressure and flow speeds (in combination with Pitot tube)
Meas. Range 0 to +10 hPa
 
0638 1447  
Pressure probe, 100 hPa, in robust metal housing with impact protection, incl. magnet for fast attachment, to measure differential pressure and flow speeds (in combination with Pitot tube)
Meas. Range 0 to +100 hPa
 
0638 1547  
Low pressure probe, refrigerant-proof stainless steel, up to 10 bar
(screw-in thread 7/16" UNF)
Meas. Range -1 to +10 bar
 
0638 1741  
High pressure probe made of refrigerant-proof stainless steel
(screw-in thread 7/16" UNF)
Meas. Range -1 to +40 bar
 
0638 1941  
High pressure probe, refrigerant-proof stainless steel, up to 400 bar
(Screw-in thread 7/16" UNF)
Meas. Range -1 to +400 bar
 
0638 2141  
Velocity
Professional telescopic handle for plug-in vane probes, max. 1 m long
 
  0430 0941  
Extension for telescopic handle, 2 m long
(please also order the 0409 0063 extension cable)
 
  0430 0942  
Handle for plug-in vane probes
 
  0430 3545  
Quick-action hot wire probe, Ø 10 mm, with telescopic handle, for measurements in the lower velocity range with direction recognition
Meas. range -20 to +70 °C
Meas. Range 0 to +20 m/s
 
0635 1041  
Bendable vane probe (can be bent by 90°), Ø 100 mm, attachable to handle 0430 3545 or telescopic handle 0430 0941, for measurements on ventilation outlets
Meas. Range +0.1 to +15 m/s
 
0635 9340  
Vane/temperature probe, Ø 16 mm, attachable to 0430 3545 handle or 0430 0941 telescopic handle
Meas. Range -30 to +140 °C
Meas. Range +0.4 to +60 m/s
 
0635 9540  
More probes
Quick-action surface probe with sprung thermocouple strip, measuring range short-term to +500°C
(Plug-in head, connection cable 0430 0143 or 0430 0145 required)
Meas. Range -200 to +300 °C
 
0604 0194  
Highly accurate immersion/penetration probe incl. certificate
(plug-in head, connection cable 0430 0143 or 0430 0145 required)
Meas. range -40 to +300 °C
 
0614 0240  
Comfort level probe for measuring degree of turbulence, with telescopic handle and stand. Fulfills EN 13779 requirements
Meas. range 0 to +50 °C
Meas. Range 0 to +5 m/s
 
0628 0009  
CO2 probe measures indoor air quality and monitors the workplace. With plug-in head, connection cable 0430 0143 or 0430 0145 required
(Plug-in head, connection cable 0430 0143 or 0430 0145 required)
Meas. Range 0 to +1 Vol. % CO2 0 to +10000 ppm CO2  
0632 1240  
Ambient CO probe to measure CO level in ambient air
Meas. Range 0 to +500 ppm CO
 
0632 1247  
Wet Bulb Globe temperature probe to assess workplaces subjected to heat, in accordance with ISO 7243 or DIN 33403, incl. WBGT case
Meas. Range 0 to +120 °C
Meas. Range +0.6 to +20 m/s
 
0635 8888  
Standard ambient air probe up to +70°C
(Plug-in head, connection cable 0430 0143 or 0430 0145 required)
Meas. range -20 to +70 °C
Meas. Range 0 to +100 %RH
 
0636 9740  
Highly accurate reference humidity/temp. probe incl. cal. cert.
(Plug-in head, connection cable 0430 0143 or 0430 0145 required)
Meas. range -20 to +70 °C
Meas. Range 0 to +100 %RH
 
0636 9741