Cefas tags example specification
Multi-layer, flexi-rigid printed circuit boards and surface-mount technology provides a small, high specification data storage tag.
| Logging, Timing and Resolution |
| Number of Channels |
8 |
| Logging rate |
Independently set for each channel |
| Logging Interval |
1 Sec to 99 Days |
| Date & Time Stamp |
Crystal controlled real-time-clock |
| Start logging time delay |
Up to 1 year |
| Sampling Regime |
Up to 10 user programmable regimes for each channel |
| Logging Life |
Dependent on sampling regime. |
| Analogue to Digital converter |
12bit |
| Interval Resolution |
1 Sec |
| Typical sampling regime |
Temperature once per day, light and pressure every 4 minutes for 18 months |
| Memory |
| Type |
Non volatile FLASH. Data recoverable when main battery has failed |
| Memory Size |
1M byte standard |
| Data retention |
Greater than 5 years |
| Options |
512k to 3Mb |
| Power |
| Internal batteries |
(Replaceable) 2x Silver oxide - 190 mAH |
| Battery Life |
At least 4 full memory fills (of 1M byte) over 1 year |
| Sensors |
| Depth |
0 to 100m & 0 to 1000m (Extended range to 3500m by arrangement). Resolution better than 0.05% of full scale. Accuracy (calibrated): ±0.5% of full scale |
| Temperature: Normal Range |
2 to 30°C, Resolution better than 0.03°C. Accuracy ±0.2oC (calibrated) |
| Temperature: Extended Range |
Up to 60°C. Higher temperatures (above 60 oC) with remote sensor. Resolution better than 0.03°C. Accuracy ±0.5°C (calibrated) |
| Light |
For geolocation purposes. |
| Data Reader |
| Purpose built reader connects to a PC for data storage and display. |
| Communications with DST |
optical |
| RS232 |
19.2k |
| Physical |
| Polycarbonate case - 100m Version (up to 3500m available by arrangement) |
Maximum Depth |
100 m (150 psia) |
| Weight in air |
16 g |
| Diameter |
18mm |
| Operating temperature range |
2 to 30° C |
| Weight in sea water |
approx. 1.8g |
| Length |
57mm |
