Gill LevelSlick User manual

gillsc.com
7014-30-055 Iss 7
© 2021 Gill Sensors & Controls Limited
Specialist Liquid Level Sensor
Manual

Specialist Liquid Level Sensors Specialist Liquid Level Sensors
gillsc.com gillsc.com
7014-30-055 Iss 7
© 2021 Gill Sensors & Controls Limited
7014-30-055 Iss 7
© 2021 Gill Sensors & Controls Limited
2 3
Contents
1. Introduction 4
2. Principle of operation 4
3. Installation 4
4. Specications 4
5. Commisioning & setup 9
6. Graphical user interface 9
7. What is tank proling? 10
8. Fault indications & returns 11
9. Sensor specications 13
10. Environmental specications 14
11. Part number conguration 17
12. Sensor drawing 17
13. Parts supplied 17
14. CE Declaration 18
Thank you for purchasing this LevelSlick sensor manufactured by Gill Sensors & Controls Limited. The unit has
no customer serviceable parts. To achieve optimum performance we recommend that you read the whole of
this manual before proceeding with installation and use.
Gill Sensors & Controls Limited are continually improving their products and specications may be subject to
change without prior notice.
The information contained in this manual remains the property of Gill Sensors & Controls Limited and should
not be copied or reproduced for commercial gain.
1. Introduction
LevelSlick provides continuous real-time monitoring of the level of any water based liquid. Having no
moving parts, no oats and no holes the sensor will continue to report accurate liquid levels even if there is
particulate matter suspended in the liquid. There are three analogue output options to allow integration into
a variety of measurement systems.
2. Principle of operation
Using conductive sensor elements over the length of the probe, this LevelSlick sensor can measure the
extent that the probe part is immersed in a liquid and hence determine the liquid level. This is done without
direct contact between the sensor elements and the liquid and without any moving parts.
The sensor can operate in any water based liquid, with or without suspended particle matter. However, it will
not work with liquids that are based on non-conductive materials, such as oil and fuel.
The measured liquid level is reported via a choice of 3 analogue outputs:
• Industry standard 4 – 20 mA current loop
• Voltage output scalable anywhere in the range 0 – 10 volts
• Resistive, for direct drive of resistive gauges
Using the GSlevel software, a free conguration programme available from www.gillsc.com/support, the
output from the sensor can be adjusted to meet any required measurement range.
In addition, all sensor variants include a second output. This consists of a zero-volt switch that can be
congured as either a maximum or minimum level warning switch.

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3. Installation
Safety Warning, This equipment is not ATEX certied and has not been designed for use in areas which
fall within the scope of the ATEX directive. If an area of intended usage is within the scope of the ATEX
directive, then contact Gill Sensors & Controls Ltd for further information.
Please check the sensor for any signs of transit damage prior to installation. Do not remove the packaging
until you are ready to install the sensor.
DO NOT attempt to cut the sensor to length or bend the sensor probe. Both actions will result in the sensor
failing and will invalidate the warranty.
The sensor is supplied as standard with a 1.25”BSP thread for tting to the tank.
The sensor must be installed on a at surface where the probe can extend into the deepest part of the tank.
When choosing where to position the sensor on the tank, please note that LevelSlick is a rigid sensor and
requires sucient clearance above and to the side to allow the sensor to be tted and when inspection is
necessary. An example of a marine installation is shown in Fig 1.
Install the sensor into a 1.25” BSP threaded hole, and tighten using a 46mm A/F spanner. The sensor is
supplied with an O-ring and gasket for sealing. To use the O-ring, the mounting hole requires a chamfer to
be machined around the upper edge (g 2). Tighten to a torque of 50Nm +/-10%, when the sensor face
‘touches’the top of the tank.
Deck
Boat Hull
Tank
Clearance
height for
installation
g 1
Chamfer required
46mm A/F
O-ring watertight seal
1.25” BSP Thread
Please note, a sensor position with a minimum of 90mm from the top of the tank to the underside of a
housing is needed to allow for cable bend as shown in g 4.
If it is not possible to create a chamfer, then the gasket should be used. Remove the O-ring and t the gasket
over the thread mount, black face up. Create a hole for the sensor as shown in Fig 3. Ensure the gasket is
centered under the sensor and tighten to a torque of 50Nm +/-10%, approximately 4.5 turns.
Ensure gasket
is centered
under the
sensor ange
Using 46mm spanner
tighten to 50Nm
g 2
g 3
Minimum 90mm
clearance for
cable
Minimum 90mm
clearance for
cable
g 4

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The sensor can be installed at any angle from vertical to a maximum recommended angle of 45°. The sensor
does not require any support inside the tank. However, you must ensure that the mounting hole in the tank is
strong enough to withstand the forces imposed by the sensor from weight and vibrations.
Important: LevelSlick sensor must not be used in a tank that is not adequately vented.
g 5
4. Electrical connection
The sensor cable has four wires:
Red = d.c. power supply
Black = ground
White = measurement output
Blue = switch output
The installation of the sensor has dierent requirements, depending on the analogue output:
Voltage: The power supply must be at least 0.5V greater than the maximum output voltage
required. The switch output requires a pull-up resistor of 1 to 10 kOhms
Current: The measurement output requires a 250 Ohm load resistor across the output. The
switch output requires a pull-up resistor of 1 to 10 kOhms
Resistive: The resistive meter requires its own d.c. power supply.
g 6
Please note; See section 10 for further connection details.

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5. Commisioning & setup
To setup and commission the sensor you will require a standard USB lead - Type A to Mini B.
On the top of the sensor ange, remove the retaining screw and cover using a 1.5mm Allen key. This enables
access to the USB connection.
Please note, there is an O-ring seal around the cover which makes removal more dicult, but ensures
protection against moisture.
When replacing the cover please ensure that a good seal is re-established.
Cover
Retaining
screw
6. Graphical user interface
LevelSlick is congured for use by downloading the GSlevel software from www.gillsc.com/support. Connect
the host PC to the sensor using a suitable USB cable. Power the sensor according to guidance in section 5
and 10 and follow the instructions for sensor set up in the software manual (within GSlevel).
g 7
g 8
7.Tank proling
LevelSlick is capable of sensing liquid level in tanks that are regular in shape where the sensor output is linear
across the full height of the tank. As shown in Fig 9, a liquid that reaches half way up the tank is 50% full.
The sensor is factory supplied so that it reports the level in a linear path as the level rises. For a regular shaped
tank this is correct. For example, a 340 litre tank would show an output as shown in g 9
LevelSlick is also capable of sensing liquid level in tanks that are not regular in shape, where the sensor
output is non-linear across the full height of the tank. As shown in Fig 10, a half full tank would not be
half way up the tank, but using the tank proling software in GSlevel corrects the output.
If a non-linear output is required through tting the sensor into a tank that is not regular in shape, please
consult guidance in the GSlevel software manual to set up operation for non-linear output.
Without using tank proling a 50% reported level would only be 109 litres.
g 9
g 10

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8. Fault indications & returns
LED Status indications
LED Status
Green (Solid)
Normal operation
Yellow (Flashing)
Bad conguration data
Red (Flashing)
Sensor failure
Red (Solid)
Firmware not running
If any of these faults arise, please contact Gill Sensors and Controls. Contact details can be found at the end of
this document.
LevelSlick has no moving parts and requires inimal maintenance in use. Faults in operation are most likely to
occur if the sensor is incorrectly congured during installaton. Conguring the measurement output and the
tank or the tank proling incorrectly will cause the reported output to be incorrect. A very bad conguration
will prevent any output being reported at all.
Important: Due to potential health risks from contamination, we cannot accept LevelSlick sensors back from
a customer or installer if the sensor has been used in a waste liquid environment (either full or empty tank or
pipes) or if the sensor(s) may have been contaminated by handling.
LevelSlick sensors returned without authorization will be rejected back to the carrier or held, package
unopened, at Good Inwards pending pick-up by customer.
If a LevelSlick sensor fails within the warranty period Gill Sensors and Controls will send a replacement sensor.
9. Sensor specications
Feature
Wiring:
Outer diameter: 6.9 mm
Power pair: Red & Black
22 AWG 1.4 mm diameter PVC insulation
Output pair: Blue & White
Drain:
Red:
24 AWG 2.0 mm diameter PVC insulation 22 AWG: 19 strands
+ve power supply
Black: -ve power supply
Blue: Switch output White: 4-20 mA output Screen: Bare drain wire
Red: +ve power supply Black: -ve power supply Blue: Switch output White: 0 to 10 volt output Screen: Bare drain wire
Red: +ve power supply Black: -ve power supply Blue: Switch output White: Resistive output Screen: Bare drain wire
Power Supply:
Reverse voltage protected. Overvoltage protected: +/-50 V
Temperature Range:
An App. is available from https://www.gillsc.com/ which may be used to congure the tank prole, the output mea- surement range and calibration information. The App. is PC based and connection to the Black water probe is via a micro-USB type B connection under a cover in the cap of the sensor.
010 Variant
Resistive
008 Variant
0-10 V
007 Variant
4-20 mA
6V to 32V Assuming 25 ohm resistor 30mA at 6V 20mA at 12V + up to 20mA 14mA at 16 to 32V output current
6V to 32V 30mA at 6V 20mA at 12V 15mA at 16 to 32V Note: Supply voltage must be greater than the congured output voltage
6V to 32V 40mA at 6V 30mA at 12V 26mA at 16 to 32V
Storage: -40°C to +85°C Operation: -40°C to +85°C

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Feature 007 Variant
4 – 20 mA
008 Variant
0 – 10 V
010 Variant
Resistive
Outputs:
Measurement output
Industrial standard current-loop in the nominal range 4 mA to 20 mA. Normally this will linearly represent the measured liquid level, but may be recongured to match non-linear tank proles and to be any range within the 4 to 20 mA range. The power supply –ve is the return path for the output current.
The resistive output is designed for direction connection to a level gauge. The output is congured as a nominal 10 Ω to 180 Ω but should be re- congured to suit the tted gauge and the installation arrangement.
Output Resolution:
Measurement output
Voltage output representing measured liquid level. Normally this will linearly represent the measured liquid level, but may be recongured to match non- linear tank proles and to be any range within the 0.5 V to 10 V range.
Note: output voltage must be congured to be less than the supply voltage.
Output impedance: 500 ohms Recommended load resistor >=10 kΩ.
Step size < 0.1 mA.
Note: The measurement resolution is less than this.
Step size < 10 mV
Note: The measurement resolution is less than this.
Step size < 0.2 Ω Note: The measurement resolution is less than this.
Tolerance: +/-10% of the full scale value.
Output Rate:
Measurement output >= 10 Hz
Outputs:
Error
Error is reported as a 2.5 mA output current.
Not applicable.Error is reported as a 0.25 V
output voltage.
Outputs:
Switch output
Conguration Interface:
Mounting:
Zero-volt switch output that is connected to the –ve power supply when the switch is turned on. Maximum ‘o’ voltage : 32 V Maximum ‘on’ current: 150 mA The switch output may be congured to measure any liquid level threshold and may switch “on” when the level is either greater or less than the threshold level.
Standard 1.25” BSP thread.
5-bolt SAE adaptor available as an optional extra.
USB micro-B connector under a cover in the cap of the sensor. See the section “Conguringthe sensor” for detailed information.
Note: The default settings may vary between gauge manufacturers. In this instance, use the custom conguration option in GSlevel to set empty, mid and full scale outputs.
10. Environmental specications
Nylon 6 + EPDM-70
Feature
Size:
Weight:
Materials:
0.33 Kg + 0.042g /10 cm probe length. E.g. 500mm length probe will weigh 0.54 kg
Body: 46 mm diameter x 41mm height.
Probe : 22 mm diameter x requested probe length.
LED Status Indicator:
(In cap of body of sensor)
Cable: PVC sheathing + Tinned copper cores. Cap: ULTEM 1000 Body: Stainless steel-316 Probe outer: FEP Probe : Copper + Glass reinforced Polyester
Green (solid): Powered and fully operational Red (solid):
Sensor failure, measurement beyond calibrated range Firmware upgrade expected / in progress
010 Variant
Resistive
008 Variant
0-10 V
007 Variant
4-20 mA

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Drop:
Within packaging
1 m – 3 sides
External Pressure
Damp Heat:
>1 0 bar absolute
EN60945:2002 (8.3) Damp Heat 95% RH +55 ˚C
FuelsChemical compatibility:
Oils Coolants Fluids
Cable pull: 50 N all 3 axis, in both directions
Diesel, Gasoline Hydraulic, Gear, Motor, Vegetable,
Ethylene Glycol, water Salt water
EMC:
Categories: Protected &
Exposed
Compass Safe Distance:
Recommendation : not to be sited within 0.5 m of magnetic compass measuring equipment
EN 60945:2002 (7.1) Extreme power supply EN 60945:2002 (9) Electromagnetic Emissions (all sub-sections) EN 60945:2002 (10) Immunity to Electromagnetic Environment (all sub-sections)
EN 61000-6-2:2005 (residential, commercial and light industrial) EN 61000-6-3:200& + A1:2011 (residential, commercial and light industrial) EN 61326-2-1:2013 (measurement, control and laboratory) EN 61326-1:2013
Feature
Operational Temperature:
Shock: EN60068-2-27:2009
Vibration :
Minimum: EN60945:2002 (8.4) Low Temperature, extended to - 40 ˚C
Maximum: EN60945:2002 (8.2) Dry heat, extended to +85 ˚C EN60945:2002 (8.5) Thermal Shock
EN60945:2002 (8.7) Vibration
Ingress: BS EN 60529:1992 +A2:2013 IP6X Cat 1
BS EN 60529:1992 +A2:2013 IPX6 BS EN 60529:1992 +A2:2013 IPX8 BS EN 60529:1992 +A2:2013 IPX9K
010 Variant
Resistive
008 Variant
0-10 V
007 Variant
4-20 mA
> 5 bar absolute
Output Type
K= Voltage
L= Current
M= Resistive
Exact Length (mm)
7 0 1 4 0 0 x- - -
x x
11. Part number conguration
Length Range
1 = 50 - 500mm
2= 510 - 1000mm
3= 1010 - 1500mm
4= 1510 - 2000mm
Thread Size
A = 1.25”
12. Sensor drawing
13. Parts supplied
LevelSlick Liquid Level Sensor
O-ring and gasket
Quick Start Guide
Access to GSlevel User Software & manuals (via www.gillsc.com/support webpage

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14. CE Declaration
Important Notices:
Gill Sensors & Controls Limited can take no responsibility for installation and/or use of its equipment if
this is not done in accordance with the appropriate issue and/or amendment of the manual.
The user of this manual should ensure that it is appropriate in all details to the exact equipment to
be installed and/or operated. If in doubt, the user should contact Gill Sensors & Controls Limited for
advice.
If further details are required which do not appear in this manual, contact Gill Sensors & Controls
Limited or one of our
Install and use LevelPro Liquid Level Sensor in accordance with local laws and regulations.
Gill Sensors & Controls Limited are continually enhancing their products and specications and reserve
the right to change or revise the information supplied in this document without notice and without
obligation to notify any person or organisation of such revision or change.
The information contained in this manual remains the property of Gill Sensors & Controls Limited and
should not be copied or reproduced for commercial gain.
Safety Warning, This equipment is not ATEX certied and has not been designed for use in areas which
fall within the scope of the ATEX directive. If an area of intended usage is within the scope of the ATEX
directive, then contact Gill Sensors & Controls Ltd for further information.
Help Us to Help You:
Every eort has been made to ensure the accuracy in the contents of our documents, however, Gill
Sensors & Controls Limited can assume no responsibility for any errors or omissions in our documents or
their consequences. Gill Sensors & Controls Limited would greatly appreciate being informed of any errors or
omissions that may be found in the contents of any of our documents.
Gill Sensors & Controls Limited
Unit 600, Ampress Park, Lymington,
Hampshire, SO41 8LW, UK
Tel: [phone], Fax: [phone]
Email: [e-mail], Website: www.gillsc.com