The WELL.DONE DSM - Distributed Structure Monitoring - system is based on a proprietary Brillouin Distributed Strain Sensing (DSS) measurement technology. Its major advantages are the excellent real-time shearing and deformation monitoring and measurement performance in combination with the passively cooled (fan-less) and maintenance-free industrial design of the WELL.DONE DTS family.
It exhibits a superior strain and temperature resolution and accuracy in comparison to other technologies. The excellent performance is achieved in both, single- and double-ended fiber configurations. The series is designed for autonomous operation without PC and comprises an internal SSD (solid state drive) for storage of measurement and event data.
Applications: Wellbore integrity monitoring, near-wellbore geotechnical monitoring, in-well Casing deformation, sand screen/control monitoring, and cement curing monitoring.
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Distance ranges of WELL.DONE DSM models
| WELL.DONE 050, -100, -200, -300, -400, -500 |
5 km, 10 km, 20 km, 30 km, 40 km, 50 km |
Data Storage / Communication / Interfaces
| I/O board (optional*) |
4 inputs / 12 outputs |
| Analogue sensors interface board (optional*) |
4x Pt100, 2x 0(4)-20mA and 2x 0-10V |
*2 optional internal boards can be installed in total
Optical data
| Optical channels (internal) |
1, 2, 3, 4, 6, 8, 9, 12 or 16 |
| Fiber configuration |
No loop or termination required |
| Optical connector(s) |
E2000 / APC |
| Fiber type |
Single-mode 9/125 |
| Laser classification |
Class 1M (IEC60825-1), eye-safe wavelength |
Measurement Performance*
| Sampling interval |
0.25, 0.5 or 1 m |
| Spatial resolution |
1, 2, 3 or 5 m |
| Temperature resolution @ 10dB optical loss |
< 1°C |
| Strain resolution, minimum |
< 2με |
| Strain resolution @ 10dB optical loss |
< 20με |
| Temperature accuracy |
2°C** |
| Measurement time |
1 to 20 min |
* Measurement performance parameters are interdependent
** After calibration on a loose fiber without strain
Data Storage / Communication / Interfaces
| Internal SSD storage |
8, 16, 32 or 64 GB |
| Communication interfaces |
2x Ethernet TCP/IP, USB, (optional: WLAN, GSM) |
| Communication protocols (options) |
XML, MODBUS, DNP3, IEC60870, IEC61850 |
| Programmable inputs / outputs |
4 / 10 |
| Fixed outputs |
Collective fault and alarm |
| Analogue outputs (optional external module) |
4 - 20mA |
Mechanical data
| Rack space |
19-inch rack, 3 height units |
| Dimensions (H x W x D) |
13.3 x 43.9 x 40.3 cm |
| Weight |
15 kg |
Electrical data
| Power consumption, max. (DC / AC options) |
40W / 45W |
| Operating voltage (DC-1 option) |
12 … 24 V DC (-15%/+10%) |
| Operating voltage (DC-2 option) |
24 … 48 V DC (-15%/+10%) |
| Mains voltage (AC option) |
100 … 240 V AC 50...60 Hz / 110… 220 V DC (-15%/+10%) |
Environmental Conditions
| Storage temperature |
-40°C to +85°C |
| Operating temperature |
-10°C to +60°C |
| Humidity (relative) |
≤95 % (non-condensing) |
| Protection class (IEC 60529) |
IP51 |
Conformity to Standards
| Electrical safety |
IEC/UL 61010-1, LV directive 2014/35/EC, CAN/CSA-C22.2 |
| EMC |
EN61326-1, EN61000-6-2,3,-4-2,3,4,5,6,8,11,-3-2,3, FCC 47 CFR Ch.1 Part15 |
| Hazardous substances, waste |
RoHS directive 2011/65/EC, WEEE directive 2002/96/EC |
| Environmental testing**** |
IEC 60068-2-6,14,27,30 |
| Functional safety (IEC61508)**** |
Hardware design compliant to Safety Integrity Level SIL2 |
| Explosion safety (option)**** |
EX II (1) G [Ex op is T4 Ga] IIC / II (1) D [Ex op is Da] IIIC / I (M1) [Ex op is Ma] |
*Qualification in process
