MD-Profile In-Place Inclinometer

MD-Profile in-place inclinometer probes are designed to use as an array of probes placed within internally flush tubes (groove less tubes) of reduced dimensions (1.5” or 2”), making the cost of drilling lower than traditional inclinometer casings.

The system is suitable for geotechnical and structural applications, where vertical or horizontal accurate profiling is required. Each profile gauge segment is mechanically and electrically linked to one another through connectors in a RS485 Modbus daisy chain configuration.

Its unique centring device allows to keep the orientation of the whole chain in the middle of the tube and to avoid unwanted movements is acquired directly by dataloggers (OMNIAlog or WR-Log). The inclination data are provided directly in engineering units.

Each gauge is also equipped with sensors for internal diagnostics at each measuring point (temperature and voltage supply). Customers may utilize any electronic device compatible with RS485 and Modbus RTU protocol as a logger.

Applications include detecting the embankment settlement and deformation in railways, ground horizontal movement and deformation (cumulative displacement), during underground tunnelling applications, structure horizontal movement and deformation of retaining walls, to detect the diaphragm wall horizontal movement and deflection and investigating landslide prone areas and open pit mines for measuring ground or rock horizontal movement and deformation.

Typically, the user should select bill of materials based on deployment scenario:

1. MD-Profile Inclinometer based upon application and number of axis (Vertical, biaxial or horizontal, uniaxial)

2. Casing Protective casing: MDP tube 1.5" or 2.0" or inclinometer casing model S143 (Easy-Lock Inclinometer Casing)

3. Data Logger - Device for storing and processing data from the inclinometer probes such as OMNIAlog, WR-Log wireless node or MIND portable readout.

The BH-Profile In-Place Inclinometer is featured in association with SISGEO Italy, the world leader in Geotechnical & Structural Health Monitoring Instrumentation.

The MD-Profile In-Place Inclinometer is used for monitoring and measuring ground movements in geotechnical applications. Some key applications include:

Railway Embankments: Settlement & deformation of railway embankments.

Retaining Walls and Slurry Walls: Monitoring lateral movements to ensure structural integrity.

Landslide Monitoring: Detects and tracks soil movements to predict and manage potential landslides.

Dam Safety Monitoring: Ensures the stability of dam structures by monitoring deformations and shifts.

Tunnel and Excavation Monitoring: Measures ground and structural movements during tunnel construction or excavation.

Bridges and High-Rise Buildings: Monitors tilting and deformations of buildings, bridges, and other infrastructure.

Slope Stability Monitoring: Monitors slopes and embankments to prevent failures in areas prone to shifting ground.

Mining Operations: Investigating open pit mines for measuring ground or rock horizontal movement and deformation.

Earthquake Effects: Tracks soil deformation caused by seismic activities to evaluate ground stability post-earthquake.

LNG tanks: For permanent monitoring of structural stability through horizontal deployment below tanks.

Features

The key features of the MD-Profile In-Place Inclinometer

Patent-pending cantering device
High Accuracy & Long-Term Stability
Versatility
MEMS Tilt Sensor
Precise Profiling
Long-Term Stability

Specification

TECHNICAL SPECIFICATIONS

PRODUCT CODE	0MDP30V0500 0MDP30V1000 0MDP30V1500 0MDP30V2000		0MDP30H0500 0MDP30H1000 0MDP30H2000
INCLINOMETER
Application and number of axis	Vertical, biaxial		Horizontal, uniaxial
Measurement principle	MEMS accelerometer
Measuring range	±30° (other ranges from ±10° to ±80° available under request)
Sensor resolution	0.0001°
Sensor repeatability	<±0.001°
Sensor accuracy	<±0.01% F.S.R. (<±0.006°) with ±30° standard measuring range
Sensor mechanical bandwidth	1 Hz
Sensor offset temperature dependency	A axis: ±0.002°/°C
Sensor stability	<±0.004° @24h
Temperature operating range	from -30°C to +70°C
Repeatability (precision) of a string of MD-Profile gauges	±1.0 mm / 30 m
TEMPERATURE SENSOR
Measuring range	- 40°C to +125°C
Accuracy	±1°C with temperature range -10°C to +85°C
SUPPLY VOLTAGE MONITOR
Measuring range		0 to 36 V
Accuracy		±5% FS
ELECTRICAL INFORMATION
Signal output		RS485 non-opt isolated communication with MODBUS RTU protocol
Powering modes		ALWAYS-ON (max 120 gauges each array) TIMED (max 247 gauges each array)
Reading speed		1.6 sec/gauge in ALWAYS-ON mode - 3.6 sec/gauge in TIMED mode (3"-3")
Power supply		from 8 to 28 Vdc
Gauge average consumption		4.3 mA @ 24 Vdc, 8 mA @ 12 Vdc
Max cable length to logger		1000 m (for more information see F.A.Q.#077 on Sisgeo web site)

PHYSICAL FEATURES

Application	Vertical	Horizontal
Main body material	Carbon fibre rod with steel joints
IP class	IP68 up to 1.5 MPa
Standard gauge length / weight	0.5 m length/ 0.65 kg - 1.0 m length / 0.77 kg 1.5 m length / 0.90 kg - 2.0 m length / 1.05 kg	0.5 m length/ 0.65 kg - 1.0 m length / 0.77 kg 2.0 m length / 1.05 kg
Max. string length	150m array composed by 1.0m, 1.5m or 2.0m gauges 70m array composed by 0.5m long gauges for mixed gauge lengths array contact SISGEO		100m array composed by 1m, 1.5m or 2.0m gauges 50m array composed by 0.5m long gauge (both tube ends open) for mixed gauge lengths array contact SISGEO

MD-PROFILE 2'' TUBES

PRODUCT CODE	0MDP20TPV30 (2.0")
Applications	Vertical MD-Profile array Horizontal MD-Profile array
Tube diameters and characteristic	flush ID 52 mm, OD 60 mm
Length	3000 mm
Collapse test	15 bar
Material	PVC DURVINIL®
Coupling	Threaded joint without internal discontinuity OD 70 mm, length 60 mm

Accessories

Accessories Specifications
February 21 2025 04:09:14

MIND Readout

Mind is a portable, compact multichannel readout unit that reads both analog and digital Sisgeo instruments. It features IP65 protection, Bluetooth Low Energy (BLE) for efficient communication, and is managed via the Mind App, compatible with both Android and iOS. With its rugged design and user-friendly interface, Mind simplifies data storage, sharing, and sensor configuration, while providing easy access to calibration parameters and instrument information through QR codes.

Accessories Specifications

Accessories Specifications
February 21 2025 04:12:02

OMNIAlog Datalogger

The OMNIAlog has been designed “in house” by Sisgeo and is the result of over 25 years’ experience using different dataloggers in geotechnical field. OMNIAlog is a versatile, cost effective and low powered datalogger supporting vibrating wire and all major geotechnical sensors. OMNIAlog has a mini web server on board, 24 local analog channels, expandable to 408 channels through multiplexers and 2 digital opto-isolated input ports. It can be managed by any Internet browser and also includes a USB flash drive support.

Accessories Specifications

	OMNIALOG GT-2400		OMNIALOG GT-100D
CPU AND MEMORY
Processor	ARM Cortex-M3 MCU with 1 MB Flash, 120 MHz CPU, ART Accelerator, Ethernet
RAM Memory	1 Mbyte RAM with backup
Mass storage	SD CARD 32 GB (*) and WEB pages
Clock accuracy	High precision RTC (real time clock with battery back-up) self compensated in temperature (3ppm @ 25°C, 10ppm @ -30 +70°C)
On-board sensors	Temperature measured on the electronic board (accuracy ±1%)
INPUT
Analog differential inputs	24 differentials individually configured. Channel expansion provided by SISGEO multiplexers	-
INTERFACES
Digital inputs	Two opto-isolated digital inputs individually selectable for switch closure, high frequency pulse and trigger. Independent 32-bit counters for each input. Max Input Voltage: 24V (Max Current: 10mA) Min Input Voltage: 5V (Max Current: 2mA)
Display & Keyboard	Small backlight graphic LCD 128x64 dpi with membrane keyboard for the minimal local management without the PC. Keyboard for start a uniscan, sequential display of the last memorized readings for each channel (sensor ID, converted unit reading, UM), device status, data download and FW/web pages update by USB pen drive, safe mode (back-up/format/restore internal SD card)
LAN ethernet isolated	10/100 Mbps, RJ45
RS232	9-pin, DE9: DCE port for GSM/GPRS modem connection Baud Rates: selectable from 9600 bps to 115.2 kbps (default setting) Default Format: 8 data bits; 1 stop bits; no parity
USB	USB 2.0 flash drive only (FAT 32), 5 V 200 mA
RS485#1 opto-isolated	5 screw clamp: DCE port for max. No.250 SISGEO digital sensors Communication interface: RS485 Communication protocol: MODBUS RTU (SISGEO Protocol) The voltage ‘V OUT’ is switched on and off under program control. V OUT is the unregulated input power supply ‘V IN’ (1 A) Power supply management (always on or energy safe)
RS485#2 opto-isolated	5 screw clamp: DCE port for max. 16 SISGEO multiplexer boards connection. Communication interface: RS485 Communication protocol: MODBUS RTU (SISGEO Protocol) The voltage ‘V OUT’ is switched on and off under program control. V OUT is the unregulated input power supply ‘V IN’ (1 A) Every channel of each multiplexer board is completely independent.
SWITCHED OUTPUT POWER SUPPLY	The voltage ‘V OUT’ is switched on and off under program control. V OUT is the unregulated input power supply ‘V IN’ (2 A)
ANALOG MEASUREMENTS
Measurement rate (MR)	High precision measurement (low speed, 5 sps): Init. analog (with auto-calibration): 27.80 sec Instrument warm-up: depending on sensor configuration Measurement: 5.41 sec Standard measurement (20 sps): Init. analog (with auto-calibration): 7.1 sec Instrument warm-up: depending on sensor configuration Measurement: 1.57 sec Fast measurement (High speed 40 sps): Init. analog (no auto-calibration): 2.65 sec Instrument warm-up: depending on sensor configuration Measurement: 0.45 sec Note1: times indicated not valid for vibrating wire measures Note2: init. analog phase is made only one time before the measurement cycle	-
Type of measurements	mA, mV, V, mV/V, °C, Hz (µsec, digit)	-
ADC	24-bit (22 true bit) differential Analog-to-Digital Converters, 5SPS, 0-24 Average Function, auto-calibration and auto-range	-
Range and power supply	Current loop (2 wires): range 0÷25 mA Power supply (selectable by the software, up to 100 mA): 24V DC, 10V DC, external Transmitter (3-4 wires): range 0÷25mA Power supply (selectable by the software, up to 100 mA): 24V DC, 10V DC, external Voltage (4 wires): range ±100mV, ±1V, ±10V Power supply (selectable by the software, up to 100 mA): 24V DC, 20V DC, 10V DC, 5 V DC ,external Servo inclinometer: range ±5V Power supply (selectable by the software): ±12V DC (dual), external Wheatstone bridge (6 wires, with sensing): range ±10mV/V Power supply (selectable by the software, up to 80 mA): 10 V DC , 5 V DC, external (max 10 Vdc) Maximum bridge resistance: 10 kΩ Minimum bridge resistance: 200 Ω Platinum RTD (Pt100): range -150°C to +150°C Power supply: 1.2 mA Potentiometer: range ±2.5V Power supply (selectable by the software): 10V DC, 5V DC Thermistor (NTC): range -50°C to +150°C Power supply: 0.05mA / 0.1mA / 1.2mA Vibrating Wire: range 400Hz to 6000Hz Excitation sine wave signal (adaptive): ±10 V	-
Reading resolution	1 µA at range 20 mA 10 µV at range ±100 mV - 100 µV at range ±1 V 1 mV at range ±10 V - 0.1 °C for Pt100 - 0.1 °C for NTC 0.1 Hz at range 6000 Hz - 0.001 mV/V at range ±10 mV/V	-
Measurement accuracy	0.01% F.S. (0.1% F.S. for Pt100 and NTC) with Standard Measurement Calibration in Sisgeo laboratories recommended every 2 years	-
Temperature drift	< 10 ppm / °C, range -30°C to +70°C	-
Input noise voltage	5,42 µVpp	-
Input limits	±12V	-
Sustained input voltage w/o damage	±50V DC max	-
DC common mode rejection	>105dB	-
Normal mode rejection	>90dB	-
Input impedance	20 MΩ typical	-
OUTPUT
Digital output	One relay output (for alarm, etc.): volt-free closure (low voltage 30V, 2A)
DIGITAL INPUTS
Measurement rate (MR)	Max frequency 1kHz
Accuracy	0.1 Hz
PROTECTIONS	Electro-mechanical relays for each measuring channel: Electrical endurance: min. 2x105 operations, Mechanical endurance: 10x108 operations. Circuit protection: Gas Discharge Tubes (GDT): DC Breakdown Voltage 75V (± 20%@100V/µs) Impulse Breakdown Voltage 250V (@100V/µs ) typical Overvoltage and reverse polarity protection on power supply input. Short circuit protection on every outputs of sensor power supply.
SYSTEM POWER REQUIREMENTS
Voltage (external power supply)	10 to 30 V DC (reverse polarity protected), max 5 A
External rechargeable batteries	12V DC nominal
Typical current drain	Sleep mode: 100 µA ON: 62 mA - ON with ethernet connected: 87 mA - ON with display ON: 115 mA ON with display ON and ethernet connected: 142 mA Analog initialisation: 115 mA Measurement: 123 mA (with 12 mA @ 24 V sensor consumption)
ENVIROMENTAL CONDITIONS
Operating temperature	-30 to +70°C (display -20 to +70°C)
Storage temperature	-40 to +85°C (display -30 to +80°C)
Humidity	80%
Overvoltage category	II
Pollution degree	2
Sound levels	< 74dBA
Maximum height of use	3000m

Accessories Specifications
February 21 2025 04:26:52

WR LOG Wireless Monitoring System

The WR LOG wireless monitoring system allows nodes to connect to a wide range of sensors and communicate with the Gateway via Long Range Radio. Nodes are easily configured using an Android app, and the system provides simple, web-based visualization software. WR LOG is a low-power system with a battery life of up to 10 years, and the distance between the node and the gateway can reach up to 15 km. The system enables remote connectivity and offers near real-time data, which can be transmitted instantly.

Accessories Specifications

Accessories Specifications
February 21 2025 04:30:46

Easy-Lock Inclinometer Casing

The Easy-Lock Inclinometer Casing is a grooved tube designed for quick and efficient installation, featuring a self-aligning junction at one end and a pre-assembled coupling at the other. The unique coupling design, with an internal O-ring, ensures a waterproof joint and a nearly flush surface between the tube and coupling.

The innovative locking system uses a nylon wire threaded through an aligned hole and groove, eliminating the need for rivets or glue. The casing system includes a lockable top cap with a survey pin for topographical surveying, a bottom cap for easy installation, and various accessories such as O-rings, locking wire, and Sisgeo adhesive tape. It is compatible with T-REX incremental extensometers and DEX in-place extensometers, offering a versatile solution for reliable ground displacement monitoring.

Accessories Specifications

TECHNICAL SPECIFICATIONS

PRODUCT CODE	MODEL 0S143107000
Casing outer diameter	70 mm (2.75")
Coupling outer diameter	76 mm (3.00")
Casing Inner diameter	58 mm (2.32")
Groove inner diameter	63.5 mm (2.5")
Thickness	6 mm (0.22")
Overall section length (casing+coupling)	3055 mm (10.02’)
Total section weight with coupling	3.6 kg
Spiral	< 0.2° / m
Material	Shock-resistant ABS
Maximum tensioning load	200 kg
Casing tensile strength	40 MPa
Casing breaking elongation	20%
Casing elastic modulus	2700 MPa
Collapse tes	15 bar
ABS transition temperature	+105 °C (221 °F)
HDT test ISO 75(	+83°C (181 °F)
Minimum borehole drilling diameter	101 mm (4”)

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Downloads

Title	File Type	File Size	Downloads	View	Last Uploaded
Product Datasheet	application/pdf	12.52 MB			February 28 2025 11:10:18

MD-Profile In-Place Inclinometer