A wide range of standard probes are available for use with the Testo 635 thermohygrometer. Please see the data sheet for additional information.
Humidity Probes
| Part Number | Description | Range | Accuracy |
|---|---|---|---|
| 0636 9735 | Humidity/temperature probe | -4 to 160°F / 0 to 100% RH | ±0.5°F / ±2% RH |
| 0636 2161 | High temp for ducts and equilibrium moisture | -4 to 257°F / 0 to 100% RH | Up to ±0.4°F / ±2% RH |
| 0636 2135 | With built-in electronics for equilibrium humidity | -4 to 160°F / 0 to 100% RH | ±0.5°F / ±2% RH |
Pressure Dew Point Probes
| Part Number | Description | Range | Accuracy |
|---|---|---|---|
| 0636 9835 | For compressed air systems | -22 to 122°F / 0 to 100% RH | Up to ±1.6°F |
| 0636 9836 | Precision probe for compressed air systems (includes NIST) | -76 to 122°F / 0 to 100% RH | Up to ±1.4°F |
Absolute Pressure Probes
| Part Number | Description | Range | Accuracy |
|---|---|---|---|
| 0638 1835 | Absolute pressure probes | 0 to 800 inH2O | ±2 inH2O |
Air Probes
| Part Number | Description | Range | Accuracy |
|---|---|---|---|
| 0602 1793 | Rugged probe, T/C Type K | -76 to 752°F | Class 2 |
Surface Probes
| Part Number | Description | Range | Accuracy |
|---|---|---|---|
| 0602 0393 | Fast action with spring for uneven surfaces | -76 to 572°F | Class 2 |
| 0614 1635 | Triple sensor for measuring wall temps | -4 to 160°F | Class 1 |
