The Testo 400 allows rapid measurement with accurate temperature probes. The instrument can extrapolate the final value for faster response times. It has the highest precision due to system calibration (measuring instrument + probe). The measuring instrument and the display are integrated within the probe, which is where the calibrated data is saved. The Testo 400 is a very practical one-hand operation with no awkward cable connections. It is a robust measuring instrument, with a waterproof design and can be wiped clean. The Testo 400 calculates all of the physical humidity parameters in the Mollier diagram and has humidity probes for every application, from remaining humidity to high humidity levels. It can also be used to measure barometric pressure and turbulence levels.
Probe Types: Humidity/temperature probe for measurements in air conditioning systems, Bendable vane probe (plug-in), Ø 2' ideal for duct exits, Surface temperature probes for super-quick temperature measurement, Comfort level probe for measuring degree of turbulence, incl. stand, Combined vane/temperature probes (plug-in), for air conditioning/ventilation ducts.
Technical specifications
Channels |
2 channel multi-function measuring instrument |
Battery Type |
1.5 V AA |
Calibration |
NIST calibration certificate, calibration range freely selectable from 20 to 10 000 fpm |
Storage Temperature |
-25°C to 60.0°C |
Operation Temperature |
0°C to 50°C |
Telescope |
3ft long (for plug in vane probes) |
Vane (Flow) |
0 to 60 m/s |