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| Titel |
Niphargus: a silicon band-gap sensor temperature logger for high-precision environmental monitoring |
| VerfasserIn |
Christian Burlet, Yves Vanbrabant, Kris Piessens, Kris Welkenhuysen, Sophie Verheyden |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250100385
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| Publikation (Nr.) |
 EGU/EGU2014-16339.pdf |
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| Zusammenfassung |
| A temperature logger, called “Niphargus”, was developed at the Geological Survey of
Belgium to monitor temperature of local natural processes with sensitivity of the order of a
few hundredths of degrees to monitor temperature variability in open air, caves, soils and
rivers. The newly developed instrument uses a state-of-the-art band-gap silicon temperature
sensor with digital output. This sensor reduces the risk of drift associated with
thermistor-based sensing devices, especially in humid environments. The Niphargus is
designed to be highly reliable, low-cost and powered by a single lithium cell with up to
several years autonomy depending on the sampling rate and environmental conditions. The
Niphargus was evaluated in an ice point bath experiment in terms of temperature accuracy
and thermal inertia.
The small size and low power consumption of the logger allow its use in difficult
accessible environments, e.g. caves and space-constrained applications, inside a rock in a
water stream. In both cases, the loggers have proven to be reliable and accurate devices. For
example, spectral analysis of the temperature signal in the Han caves (Belgium) allowed
detection and isolation of a 0.005°C amplitude day-night periodic signal in the temperature
curve.
PIC
Figure 1: a Niphargus logger in its standard size. SMD components side. Photo credit: W.
Miseur |
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