Testo 6721 Dew Point Switch
Humidity monitoring in compressed air down to -30°C
Availability
Usually ships in 1-2 weeks
Features
- Part number 0555 6721
- Manufactured by Testo
- Detects moisture in compressed air systems
- Measurement range -30 to 30°C (-22 to 86°F)
- Optional alarm box available
- Easy configuration with P2A software
- Uses proven Testo humidity sensor
- Mini DIN interface
Includes FREE
The Testo 6721 dewpoint switch measures the temperature pressure dewpoint (tpd) coming from refrigeration dryers or downstream in pneumatic machines and processes from -30 to 30°C (-22 to 86°F) up to 300 psi (20 bar). Moisture in compressed air lines can lead to expensive damage: icing, corrosion, water hammer, sticky and clogged materials. The Testo 6721 dewpoint switch can save time, money and system downtime by monitoring moisture and avoiding damage.
The Testo 6721 dewpoint switch uses Testo's proven RH sensor design for accurate temperature pressure dewpoint measurements. It's easily installed in dryer and compressed air lines via its 1/2" NPT threaded fitting.
The Testo 6721 dewpoint switch can be configured using the optional Testo P2A software via USB cable and the data port on the 6721 switch. The software can easily program, adjust and review the 6721 operating history while connected to a laptop or PC. The user can even save a "master" program file that provides easy "copy and paste" program replication for OEM requirements. An optional alarm box (0554 6722) provides visual confirmation of both pre and alarm conditions.
Testo 6721 Dew Point Switch Specifications
| Feature | Testo 6721 |
|---|---|
| Measuring range | -30 to 30°C (-22 to 86°F) |
| Accuracy | ±4 K (-30 to -20°C)(-22 to -4°F) ±3 K (-20 to -10°C)(-4 to 14°F) ±2 K (-10 to 0°C)(14 to 32°F) ±1 K (>0°C)(>32°F) |
| Sensor | Testo humidity sensor (with special trace humidity adjustment) and NTC temperature sensor |
| Process pressure | Max. 20 bar (abs)(290 psi) |
| Process temperature | 0 to 50°C (32 to 122°F) |
| Outputs | 2x switches potential-free max. 30 V/0.5 A |
| Interface | Mini-DIN interface (serial) for parameterization / adjustment / analysis via P2A software |
| Voltage supply | 20 to 30 VAC/VDC |
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Power Supplies
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Wall-mountable 110-240 VAC box power supply
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$155.00 $137.95 |
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DIN rail mountable 90-240 VAC power supply
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$195.00 $173.55 |
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Software
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Parameterizing, adjusting and analyzing software with USB cable and adaptor
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$197.00 $175.33 |
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Accessories
Please consider these optional accessories.
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Testo 0554 6722 2 Alarm Box
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$421.00 $374.69 |
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Measuring Chamber for Testo Dew Point Transmitters
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$225.00 $200.25 |
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Cooling coil for Measuring Chamber
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$229.00 $203.81 |
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Perform quick checks or full calibrations for humidity probes
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$389.00 $346.21 |