MetriCorr Slimline ICL-C User manual

Toerringvej 7 Roedovre 2610 Denmark - Tel. [phone] [e-mail]
Slimline series
ICL-C & MasterLink
Operation Manual
Document: 102272-00
Release date: June 2021

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 2 | 54
Contents
1Scope................................................................................................................ 4
2ICL-C & MasterLink Unit.................................................................................... 5
2.1 MasterLink module connectors & control ............................................................................6
2.2 ICL-C module connectors ......................................................................................................7
3Configuration ................................................................................................... 8
3.1 Switch on & Initial Communication.......................................................................................8
3.2 WebService - general ............................................................................................................9
3.2.1 Setup of ICL-C & MasterLink........................................................................................................ 11
3.2.2 Communication interval.............................................................................................................. 13
3.2.3 Sample interval & Start time ....................................................................................................... 14
3.2.4 Intensive measurements ............................................................................................................. 15
3.2.5 Assigning probes/sensors/components to the ICL-C .................................................................. 16
3.2.6 Linking ER probes to your account.............................................................................................. 17
4Line Current Sensor ........................................................................................ 18
4.1 LC input voltage range.........................................................................................................18
4.2 Connections to steel pipe or other structure......................................................................19
4.3 DC resistance (LC input) ......................................................................................................19
4.4 AC measurements for a steel pipe (LC input) .....................................................................20
4.5 WebService - Line Current Sensor (LCS)..............................................................................21
4.5.1 Create Line Current Sensor.......................................................................................................... 21
4.5.2 Defined Specific Resistivity Table ................................................................................................ 24
4.5.3 Data display –Line Current Sensor (LC Sensor)........................................................................... 25
5Installation ..................................................................................................... 28
5.1 Solar Junction Box Installation ............................................................................................28
5.2 Big Fink Installation .............................................................................................................33
5.3 Big Fink Solar Solution.........................................................................................................38
5.4 Battery Hat Solution............................................................................................................39
6Your Data –Simple WEBservice Instructions................................................... 40
6.1 View & Download Logged Data...........................................................................................40

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 3 | 54
6.2 Unit Pipeline & Location Assignment..................................................................................41
6.3 Alerts ...................................................................................................................................42
6.4 Reports ................................................................................................................................43
7Satellite –communication .............................................................................. 44
7.1 Satellite modem & placement ............................................................................................45
7.2 Power & LED indicators.......................................................................................................45
7.3 Webservice Subscription.....................................................................................................46
7.4 Setup in Webservice............................................................................................................47
7.4.1 Example: 25h interval measurement campaign.......................................................................... 48
7.4.2 Example: 24h interval measurement campaign.......................................................................... 49
7.5 App & Data for satellite connected MasterLinks ................................................................49
Appendix 1: Junction Box Mounting Guide........................................................... 50
Appendix 2: Solar Charger Instructions ................................................................ 51
Revision
Date
Comments
Prepared
Review
Approval
001
2021-06-02
Review Section 7. Satellite –communication
RCH
LBT
LBT
Draft R001
2021-01-08
Operation Guide ICL-C & MasterLink.
Already reviewed by LBT and FGa.
This version is based on the previous ICL &
MasterLink operation guide by FrB, 2018-11-14.
RCH
LBT
FGa

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 4 | 54
1Scope
This document is a guideline for setup and operation of the datalogger model “ICL-C & MasterLink”from
MetriCorr’s Slimline series of remote monitoring equipment. Hereafter referred to as “unit”.
The MetriCorr remote monitoring system uses an online WebService, where all the data from site are
uploaded and stored. The unit consists of a MasterLink module and an ICL-C module, where both modules
are configured and controlled from WebService.
Before you start:
•If you want to link your new unit to an existing MetriCorr WebService account, please email
[email protected] with the following information:
-Account Name (existing or new) you wish the unit(s) to be assigned to.
-User email address (for new users to log in to existing or new accounts)
-MasterLink Serial Number(s) you wish to link to the account
•If you are a new customer or setting up a NEW account, please also provide details of a Primary
contact person for data & administration communication with MetriCorr.
1. Name & title / position
2. Email address
3. Telephone number
Once you have confirmation that the units have been assigned to the account as requested (together with
login details if you have requested a new account or user), you are ready to start.
IMPORTANT: Do not disassemble the unit. If the unit is malfunctioning, please contact MetriCorr.

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 5 | 54
2ICL-C & MasterLink Unit
The Slimline ICL-C
measurement module
is paired with a
MasterLink control and
communications
module. They are
shipped preassembled
as shown:
Figure 1. ICL-C & MasterLink as shipped
Standard accessories:
-Antenna LTE with 1m wire and adhesive pad
-Protective caps for connectors
-Power cable with DC connector
-Yellow wire 1m, 4mm banana connectors
-Black wire 1m, 4mm banana connectors

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 6 | 54
2.1 MasterLink module connectors & control
The MasterLink module comes with a Status/control button, antenna, and Power supply connectors as
standard. Optional interface connectors are available on-demand.
Figure 2. MasterLink module connectors & control
Table 1. MasterLink - Specifications
MasterLink –Specifications
Battery Lifetime
+3 years @ 1h logging intervals and
weekly transmissions
Casing
IP65
Humidity
0-100% RH condensing conditions
Operating conditions
-40 °C to +85 °C
Storage capacity
+200 000 readings
Logging intervals
(Normal mode)
10 min → ∞, recommended 1 hour
Logging interval
(Campaign mode)
1 sec in pre-defined time intervals
A: Antenna connection
B: Status/control button & LED indicator
C: Power supply connector
(with protective cap)

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 7 | 54
2.2 ICL-C module connectors
The ICL-C module's endplate consists of five connectors for the ER probe connection, Line Current Sensor,
and Reference electrode to Pipe/structure measurement.
ER channel (1)
Resistance Range
150 mΩ
Repeatability
0.2 µΩ
Precision
0.4 µΩ
Line Current channel (2)
Input voltage range DC
(Before clip)
± 1.2 V
Input voltage range AC
(Before clip)
845 mVRMS
Target input range for
DC measurements
-20 mV →+20 mV
Resolution
0.2 µV
DC accuracy
± 1 µV
AC accuracy
± 4 µV
Input resistance
33 kΩ
Terminal "Pipe" –Pipe/structure connection
Terminal "Ref." –Reference Electrode connection
The voltage measurement between
"Pipe" and "Ref." is performed by both
channel 1 and channel 2.
Voltage measurement (both channels)
Input range (voltage)
± 100 V
Resolution (voltage)
1 mV
DC accuracy (voltage)
± 1 mV ± 0.3% reading
AC accuracy (voltage)
± 2 mV ± 1% reading
ER Probe Current measurement (channel 1)
Current range
± 300 mA
Resolution (current)
0.1 µA
AC accuracy (current)
± 4 µA ± 1% reading
DC accuracy (current)
± 1 µA ± 1% reading
Figure 3. ICL-C module

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 8 | 54
3Configuration
3.1 Switch on & Initial Communication
Once connected to the antenna and battery, push the 'Status/Control' button ('E' in Figure 3) and release
(<0.5s). This will indicate the unit's current status/mode with a series of flashes on the LED built into the
button. Please refer to the LED flash patterns below.
*The device is Off. 5 short (0.5 milliseconds) flashes per second for 5
seconds. This signal is triggered by a short (<0.5s) push on the push-
button.
Figure 4. LED flash indication
Mode / status
Description
Waiting
The device is active and waiting for the next measurement to be performed.
Short (50 milliseconds) flash every 8 seconds
Measuring
The device is performing a measurement.
Longer flash (0.5 seconds) repeated every second.
Searching
The device is searching for a network.
1 short (0.5 milliseconds) flash repeated every second.
Transmitting
The device is transmitting data to the WebService.
3 short (0.5 milliseconds) consecutive flashes repeated every second.
Off
The device is Off.
5 short (0.5 milliseconds) flashes per second for 5 seconds.

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 9 | 54
3.2 WebService - general
Log on to https://data-metricorr.com using the username and password sent to you as per Section 1. For
data safety, it is recommended that your assigned password should be changed on your first login. This can
be done in the 'Profile' menu. You should also 'Logout' when you have completed your session.
The landing page is the "ICL ER probe" page and looks like this:
Click "DATA" -> "I LCS" to show the "Line Current Section":
Click "RMU" -> "MASTERLINKS" to show the page "Your defined MasterLinks":

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 10 | 54
Figure 5." Your defined Masterlinks" page
"Your Defined MasterLinks" can be any
of the following types: ICL, VL100 or ICL_C
An overview of the columns in the" Your defined Masterlink" table above is described in Table 2 below:
Table 2. Your defined MasterLinks –parameter description
Parameter
Data (example)
Comment
MobileID
AL02840252
MasterLink Serial number
SW version
1.3.145,1.3.145,1.3.145
Software version (MasterLink, Bluetooth, ICL-C module)
Battery
/
Not fitted with battery
Net info
3G/Fair,-81dBm
Network connection and signal strength
Received Time (UTC)
13-Jan-2021 11:51:21
UTC time stamp of LAST communication/data transfer
Next wakeup (UTC)
13-Jan-2021 12:50:32
UTC time stamp of NEXT communication attempt
Status
OK, 348 logger lines
received
" OK" indicates that communication went well.
" 348 logger lines received" inform amount of data received since
last communication session.
Longitude
12.430468
Geographic coordinate [degrees]
Lattitude
55.695079
Geographic coordinate [degrees]
Time
11:38:57
UTC time stamp for geographic coordinate
Connected Device
ICL-C
Indicate type of logger, in example: ICL, VL-100 or ICL-C
Serial number
AT0239770
Serial number of ICL-C module
Channel 1 SN
PI20304415
Serial number of connected ER probe
Channel 2 SN
Pipesection 08
Serial number of Line Current Component, i.e. a pipe section.
Options
Setup
Link to the Setup page
History
Link to the History page
S/N (ICL_C module)
Line Current (component)
ER probe (component)
Setup link

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 11 | 54
The 'Received Time' should be approximately that of when the unit was powered up. Status should be 'OK.'
After the unit has started communication (refer to" Figure 4. LED flash indication" flash pattern, 3rd row), it
could take a few moments for the WebService to update. Refresh your browser page if it does not appear
within 1 minute.
Should the unit not display on the MasterLink page, restart the unit to force new communication.
3.2.1 Setup of ICL-C & MasterLink
On the setup page in WEBService, the user shall specify the interval between measurements or a schedule
for a weekly" Intensive mode" campaign.
On the" Your defined Masterlink" page, see
Figure 5, you can access the setup page for the current ICL-C & MasterLink:
Click' Setup' in the column to the right:

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 12 | 54
Now the Setup page will be shown:
In the following sections, the setup page will be described in detail.

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 13 | 54
3.2.2 Communication interval
Two parameters set the interval between MasterLink communication (wake up) with WebService:
1. Sleep(OK) hours. As long as communication is successful, the MasterLink goes to sleep for example,
168 hours before the next wake-up, where communication and data transfer are established again.
2. Sleep(Fail) hours. If communication fails, the MasterLink try to establish communication with a
different interval. (I.e. 4 hours)
For battery operation, it is recommended to set the unit for a 4h sleep interval in case of a communication
error (Sleep (FAIL) hours), and a 24h (once daily) for normal operation (Sleep (OK) hours) in order to
preserve battery life.
The existing settings are shown under 'Latest Registration'. For a new unit this will be blank.
Installation mode.
After initial power-up, 'Installation mode' will be activated. Communication frequency will be forced
automatic to 1h. This stated will automatically be disabled after three days and returned to recommended
normal operation.
Communication frequency can configurated as desired. It is recommended to specify a 4h sleep time, in
case of a communication error (Sleep (FAIL)) and a 24h (once daily) for normal operation (Sleep (OK)) to
preserve battery life.
Latitude & Longitude coordinates.
You can also request the unit's position (estimated latitude, longitude by GNSS) by checking the 'Get
Position' box. The retrieved data will be displayed in the 'MasterLink' table on next scheduled 'wake up'.

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 14 | 54
3.2.3 Sample interval & Start time
The time between each measurement of ER probe, Line Current Sensor and Pipe-Ref voltage are specified
as Sample interval, which can be set by the user according to the part of the Setup page shown below:
Start time, HH:MM (UTC) sets the time of the first sample to be measured.
Sample interval (min) sets the interval for the next sample to be measured. The unit will continue to
perform measurements with this interval until the user stops it.
The 'Latest Registration' text shows when the next measurement is currently due to occur. All
updates will be performed at this time. This can be 'forced' by physically restarting the MasterLink.
Remember to 'Save request' beforehand.

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 15 | 54
3.2.4 Intensive measurements
There are seven individual periods available. Each of the periods specifies a measurement there will be
repeated on weekly basics; all setup is in UTC Time.
For example, three periods are enabled in the weekly schedule.
1. Every Monday, starting at 10:15 AM, for a period of 2 hours
2. Every Wednesday, starting 8:45 PM, for a period of 4 hours
3. Every Thursday, starting 3:00 AM, for a period of 30 min

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 16 | 54
3.2.5 Assigning probes/sensors/components to the ICL-C
The ICL-C has two channels: Channel 1 (ER probes) and Channel 2 (Line Current Sensor).
At the bottom of the setup page, you can assign ER probes to Channel 1 (Probe 1) and a LCS component to
Channel 2 (LCS Sensor) using the drop-down list of probes you have linked to your account, see the
following section "4.5.1 Create Line Current Sensor".
ER probes for ICL-C will always be" Connected". Only Channel 2 on an ICL-MasterLink (a different product in the Slimline series) can
be configured as" Native" via a hardware jumper inside the unit. "Connected" means that the ER probe is connected to the "Pipe"
terminal. "Native" means that the ER probe is NOT connected to the "Pipe" terminal, which is used for corrosion measurements in
free air.
As shown below, probes/sensors can be 'Disabled' from the drop-down list for both channels. Assigning a
probe/sensor/component to a channel allows the ICL-C to take readings on that channel.
Probe 1 (ER probe)
Suppose an ERv2 probe is connected to the ICL-C. In that case, the unit will automatically detect the probe
serial number and the probe certificate data, which does not need any further action once the probe serial
number is displayed.
LCS sensor (LCS component)
Before you can assign an LCS sensor, you must create an LCS sensor certificate, a data-set typed in on the
webpage described in section "4.5.1 Create Line Current Sensor".

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 17 | 54
3.2.6 Linking ER probes to your account
The slimline ICL automatically recognizes the new ERv2 generation probes, and the data are stored
automatically. However, previous-generation probes must be configured manually:
Manual ER probe configuration
Click “Component” -> “ICL ER Probe”
The landing page will now show "Your Probe Certificate data":
Click "Create Sensor"
The landing page is displayed to the right, where a
new sensor/probe can be created by manually
typing in the certificate data for the ER probe.
The certificate is provided with each probe. If you
do not have the certificate for the probe you want
to upload, please email the serial number to
[email protected], and we will email a
copy as soon as possible.

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 18 | 54
4Line Current Sensor
The Line Current (LC) input on the ICL-C is designed to monitor the current flowing in a steel pipe (or other
structure), hereafter referred to as "pipe", by measuring the voltage drop across a certain span of the pipe.
However, it is possible to measure any voltage source connected to the LC input within the maximum limits
of ± 1.2 Vdc. Data for both DC and AC voltages are accessible in WebService.
The DC current in the pipe is calculated by a user-defined DC
resistance and displayed in WebService as a graph.
The AC current in the pipe depends on many fluctuating factors such
as soil moisture level and is therefore not calculated in WebService.
The LC input consists of the two terminals LC+ and LC-,
which are galvanically isolated from all other terminals.
4.1 LC input voltage range
The LC input is designed to monitor signals in the µV and mV range with a maximum target DC voltage of 20
mV. However, the maximum allowable input voltage range is ± 1.2 Vdc to allow a much higher AC voltage
signal without clipping the signal as illustrated in the graph below:
If the LC input voltage exceeds 1.2 V, the A/D converter will clip the signal and an error message will be
shown.
Time
0s 5ms 10ms 15ms 20ms 25ms 30ms 35ms 40ms
V(V1:+)
-1.2V
-0.8V
-0.4V
-0.0V
0.4V
0.8V
1.2V
20 mV
DC amplitude: 20 mV
AC amplitude: 1.18 V
Freq: 50 Hz

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 19 | 54
4.2 Connections to steel pipe or other structure
A steel pipe is used for this illustration, where the ICL-C MasterLink is placed in the center between the two
line current measuring points:
The current "I" with an arrow indicates the positive current direction.
4.3 DC resistance (LC input)
DC current in a buried steel pipe only depends on the DC resistance of a given length of the steel pipe,
which is a fixed value. (Does not change with soil moisture level, etc.). Since the DC resistance of a given
length of steel pipe (span) is much smaller than the AC impedance, it is recommended to select the pipe
span long enough to achieve a DC voltage measurement high enough to give accurate readings.
The recommended DC target voltage is 20 mV, which gives a good resolution in the µV range while keeping
a good headroom for superimposed AC voltages before clip (± 1.2 Vdc), 60 times higher than 20 mV.

MetriCorr
Slimline series –ICL-C & MasterLink Operation Manual 20 | 54
Example: 12.75" steel pipe, 100-meter span
This example indicates the measured voltage range of a steel pipe with the given data:
Data for steel pipe
Outer diameter
12.75”
324 mm
Wall thickness
0.5"
12.7 mm
DC resistance
23.3 mΩ/mi
14.5 µΩ/m
DC resistance for 100 m pipe:
    
Voltage measurement per ampere:
  
The pipe current that results in a measured voltage of 20 mVdc across the span of the pipe (100m) is given
by:
  
 
Maximum peak current before clip:
  
    
4.4 AC measurements for a steel pipe (LC input)
The LC input offers an AC voltage measurement to be displayed in Webservice.
Determining the AC current in a buried steel pipe requires advanced models to predict the AC impedance,
which depends on many factors:
-Steel pipe inductance (Relative permeability of the steel type used for the pipe)
-Pipe dimensions
-Capacitance to surrounding soil (coating)
-Specific earth resistance (depends on location and soil moisture level)
Note that the AC impedance will change according to the moisture content of the surrounding soil.