E+E TDS501 Dew Point Sensor
Measuring down to -94°F Td with continuous auto-calibration, ±3.6°F accuracy, and rugged 1160psi stainless steel construction for reliable industrial moisture monitoring.
Effective April 23rd, 2026, E+E has added a 10% surcharge for all of their products. The surcharge will appear as a separate line item on the order.
Overview
Features
- Dew point measuring range: -94 to 86°F Td
- Accuracy: ±3.6°F Td
- Pressure rating: up to 1160psi
- Outputs: 4 to 20mA or RS485 with Modbus RTU
- Protection rating: IP65 / NEMA 4X
- Process connection: G 1/2in ISO or 1/2in NPT stainless steel
- Operating temperature range: -40 to 158°F
- Measured parameters: dew point, frost point, volume concentration, and water vapor partial pressure
- Sensor technology: E+E Quattro Sensor with continuous auto calibration
Description
The TDS501 dew point sensor measures very low moisture levels in compressed air and industrial gas systems. It measures dew point temperature from -94 to 86°F Td with ±3.6°F accuracy and calculates frost point temperature and volume concentration (ppm) from the same measurement principle.
It uses a capacitive multi element sensing system (E+E Quattro Sensor) with continuous auto calibration to reduce long term drift and maintain stability at low humidity levels. Output options are 4 to 20mA analogue or RS485 Modbus RTU for standard industrial integration. The sensing element tolerates temporary condensation during process transients such as startup or rapid humidity changes. Response time varies with filter type, with faster response using low restriction configurations. The housing is stainless steel 316L with IP65 protection and is rated for compressed air systems up to 1160psi.
Documents
Accessories
Required Components
These additional components are required for the operation of your product. We strongly advise you to purchase these components unless you already own them or own a suitable alternative.
Accessories
Please consider these optional accessories.
Need Help? Call a Calibration engineer at 1-800-884-4967
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