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Optimal logging solution: Dendrometer Meter (DEN1)
DR26 Band Dendrometer
For the measurement of short and long term changes in stem circumferenceThe DR26 Band Dendrometer is used to measure short and long term changes in stem circumference. The DR26 measures stems with a diameter greater than 8cm.
The DR26 is a highly accurate dendrometer with a measurement resolution of 1μm (0.001mm) stem circumference change. The DR26 is IP-66 rated and is designed to measure stem changes over many years.
The DR26 Band Dendrometer is a non-invasive measurement device attached to the stem with an inextensible stainless steel band.
More Details
The stainless steel band has a linear thermal co-efficient of 17.3 x 10-6 per ºC. Therefore thermal variations caused by daily or seasonal changes in temperature have no measurable impact on the operation of the DR26.
- The DR26 is ideally supported by the Dendrometer Meter (DEN1), a wireless, stand-alone logging instrument available from ICT International.
- The DEN1 can support up to 10 x DR26 sensors.
- For complete monitoring solutions, the DR26 is used in combination with the Sap Flow Meter (SFM1), Stem Psychrometer (PSY1), Light Sensor Meter (LSM1) or the ICT International automatic weather station.
Specifications
Sensor Specifications
| Measurement | |
| Measurement Range | 0 - 60 mm |
| Accuracy | ± 2% |
| Resolution | 0.001 mm |
| Response Time | Less than 0.5 seconds |
| Stabilisation Time | 3 seconds approximately from power-up |
| Interface | |
| Input Requirements | 4.6 - 16 V DC unregulated |
| Power Consumption | 1 mA typical, 5 mA maximum |
| Output Signal | 0.0254 mm/mV |
| Mechanical | |
| Size | 100 x 70 x 100 mm |
| Weight | ca 250g |
| Needle Separation | 12 mm |
| Needles | Stainless Steel (Grade 316) - does not corrode in saline solutions |
| Exterior | UV resistant plastic |
| Cable | 15 m Standard |
| Other | |
| Environment | Designed for permanent installation |
Meter Specifications
| Instrument Logging | |
| Instrument Specification Brochure | |
| Analogue Channels | 5 double ended or 10 single ended |
| Resolution | 0.00001V—24-Bit |
| Accuracy | 0.001V |
| Minimum Logging Interval | 1 second |
| Delayed Start | Suspend Logging, Customised Intervals |
| Sampling Frequency | 10Hz |
| Data | |
| Communications | USB, Wireless Radio Frequency 2.4 GHz |
| Data Storage | MicroSD Card, SD, SDHC & SDXC Compatible (FAT32 format) |
| Software Compatibility | Windows XP, Vista and Windows 7 |
| Data Compatibility | FAT32 compatible for direct exchange of SD card with any Windows PC |
| Data File Format | Comma Separated Values (CSV) for compatibility with all software programs |
| Memory Capacity | 2GB expandable to 64GB |
| Operating Conditions | |
| Temperature Range | -40 ° C to +80 ° C |
| R/H Range | 0-100% |
| Upgradable | User Upgradeable firmware using USB boot strap loader function |
| Power | |
| Power supply | 12V DC 2-wire non polarized bus |
| Power Consumption | 20 mA |
| Internal Battery Monitoring | Logging internal battery voltage & charging current |
| Charging Rate | Automatic variable rate of charging to maximise solar panel charging current on full sun days and or under low light cloudy conditions Variable current 10 mA to 200 mA |
Image Gallery
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Features
Optimal logging solution:
Dendrometer Meter (DEN1)
Dendrometer Meter (DEN1)
Logging:
- Stand-alone logging
- MicroSD expandable memory
- Wireless connectivity and data transfer
- Simple conversion and scripting
- Flexible sensor calibration, look-up tables, and user scripts
- 24-Bit resolution
- IP68 rated water proof enclosure
- Free Windows utility configuration software
- Optional wireless logging via MCC1
- Field: solar power and 12V battery
- Lab: main power supply
- Internal Lithium-Polymer battery
- Internal voltage regulation
- Optical isolation lightening protection
ICT International has provided solutions for soil, plant and environmental monitoring since 1982.
© 2003 - , ICT International
© 2003 - , ICT International