WELL.DONE Distributed Structure Monitoring System

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