testo 6740
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humidity monitoring in compressed air
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Description
Increase safety - Cut costs
The long-term stable testo humidity sensor with protocolled precision calibration at residual humidity -40 °Ctpd.
Features:
Maximum reliability
- long-term stability, test humidity sensor applied 100 000 times over
- Demonstrably correct indication of measurement ranges and data
- Highest manufacturing quality
Calculation of the most important trace humidity variables
- e.g. °Ctpd, °Ctd atmosperic, ppmv
Calibration protocol
Analog output
- 4 to 20 mA (2-wire)
- 2 limit signal outputs (optional)
Accessories
Technical Data
| Operating temperature | -20 to +70 °C |
|
Protection class |
IP 65 |
|
Humidity sensor |
testo humidity sensor with protocolled trace humidity adjustment at -40 °Ctpd |
|
Temperature sensor |
NTC |
| Measuring range: pressure dewpoint temperature |
-60 to +30 °Ctpd at pressure dewpoints < 0 °Ctpd display of frost point, at > 0 °Ctpd of dewpoint |
| Measuring range: temperature | 0 to 50 °C |
| Measuring range: atmosperic dewpoint |
-80 to -15 °Ctpd (at 30 bar rel.) - 70 to 10 °Ctpd (at 3 bar rel.) - 60 to +30 °Ctpd (at 0 bar rel.) |
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