Testo Humidity and Pressure Probes

Humidity and pressure probes for Testo 400 & Testo 650 reference meters.

The Testo humidity and pressure probes are designed for use with Testo 400 and 650 reference meters. The probes are available in a wide range of styles with features suitable for a wide range of applications.

The Testo humidity and pressure probes are not compatible across all meter models. Many of the probes require a connection cable. Please consult the datasheet or contact us for additional information.

Testo Air Probes:

Model Description Accuracy Connection
0636 9740 Standard indoor air quality probe ±2% RH requires cable
0636 2130 Thin humidity probe (4 mm) ±2% RH requires cable
0636 9741 High accuracy probe up to ±1% RH requires cable

Testo Material and Equilibrium Pressure Probes:

Model Description Accuracy Connection
0628 0013 Flexible RH probe w/ 60" cable ±2% RH requires cable
0636 0340 Sword probe for stacked material ±2% RH requires cable

Testo Differential Pressure Probes:

Model Description Range Connection
0638 1347 Precision probe in metal housing 0 to 0.4 inH2O requires cable
0638 1447 Precision probe in metal housing 0 to 4 inH2O requires cable
0638 1547 Precision probe in metal housing 0 to 40 inH2O requires cable
0638 1647 Precision probe in metal housing 0 to 400 inH2O requires cable