Kobold NEO-7 Series User manual

KOBOLD Instruments Inc. 1801 Parkway View Drive, Pittsburgh, PA 15205 Ph: 412-788-2830 E-Mail: [email protected] www.koboldusa.com NEO 01/0820 Rev A
NEO-7006, NEO-7006-IS, NEO-7012 & NEO-7012-IS
Series Manual
NEO-7
Ultrasonic Level Transmitter

|2 NEO 01/0820 Rev A
Introduction / Table of Contents Step One
An ultrasonic sound wave is pulsed from the base of the transducer. The sound wave reflects against the
process medium below it. The sound wave energy is returned to the transducer. The microprocessor based
electronics measures the time of flight between the sound pulse generation and its receipt. This translates into
the distance or range between the transducer and process media below.
NEW FEATURES
Reflective Ultrasonic Technology
Simple configuration with push button or NEOCal software
Increased temperature range
Increased output filtering
TABLE OF CONTENTS
Introduction:..........................................................................................................................................................2
Specifications:...........................................................................................................................................4
Dimensions:...........................................................................................................................................5-6
Intrinsically Safe Control Drawing:............................................................................................................7
Reflective Technology:..............................................................................................................................8
About this manual:....................................................................................................................................9
Getting Started:...................................................................................................................................................10
Setup Overview:......................................................................................................................................10
Components:...........................................................................................................................................10
NEOCal Software vs. Display Configuration:..........................................................................................11
Understanding Sensor Height (Height):..................................................................................................12
Understanding Fill-Height (Fill-H):......................................................................................................13-14
Sensor Output to Local Display: .............................................................................................................15
Configuration (with NEOCal Software):..............................................................................................................16
Step 1 – Install NEOCal Software:..........................................................................................................16
NEOCal Software System Requirements:...................................................................................16
USB Fob Interface:......................................................................................................................17
Step 2 – Measure the Tank:....................................................................................................................18
Step 3 – Sensor Configuration:...............................................................................................................19
Step 4 – Dimensional Entry: ...................................................................................................................20
Step 5 – Tank Level Confirmation:..........................................................................................................21
Step 6 – Write to Unit:.............................................................................................................................21
Configuration(with Display):...............................................................................................................................22
Step1 – Measure Tank:...........................................................................................................................22
Step 2 – Setting the Units of Measurement:...........................................................................................23
Step 3 – Setting the Height:....................................................................................................................24
Step 4 – Setting the Fill-H:......................................................................................................................25
Step 5 – Setting the Fail-Safe Current Output:.......................................................................................26
Installation:..........................................................................................................................................................27
Mounting Guide:......................................................................................................................................27
Fitting Selection: ................................................................................................................................28-29

NEO 01/0820 Rev A 3 |
Introduction / Table of Contents Step One
Wiring: ................................................................................................................................................................30
Wiring Diagram – Sample:......................................................................................................................30
Wire Connections:...................................................................................................................................31
General Notes for Electrical Connections, Usage and Safety: ...............................................................31
Analog Output:........................................................................................................................................32
Common Wiring to Displays, Controllers & PLCs:..................................................................................33
NEOCal Software Appendix: ..............................................................................................................................34
Sensor Configuration:........................................................................................................................34-35
Volumetric Configuration:...................................................................................................................36-38
Tank Level Confirmation:........................................................................................................................39
“Write to Unit”..........................................................................................................................................40
Display Appendix:...............................................................................................................................................41
Air Gap vs. Liquid Level:.........................................................................................................................41
How to reverse the current output (Rev mA): .........................................................................................42
How to Setup to Start-up Power: ............................................................................................................43
Values Menu:..........................................................................................................................................44
SETUP:.......................................................................................................................................44
Diagnostic (DIAG) parameters:...................................................................................................44
Reset:..........................................................................................................................................45
Appendix:............................................................................................................................................................46
Factory Settings:.....................................................................................................................................46
User Settings: .........................................................................................................................................46
Troubleshooting:.....................................................................................................................................47
Limited Warranty:................................................................................................................................................48

|4 NEO 01/0820 Rev A
Introduction Step One
SPECIFICATIONS
Electrical:
Supply Voltage: 14-28 Vdc
Signal: 4 to 20 mA current loop; 22 mA
max.
Signal invert: 4-20mA or 20-4mA
Signal fail-safe: 4mA, 20mA, 21mA, 22mA or
hold last value
Mechanical:
Display Module: Removable via short cable and
plug
LCD: 6 characters, 10 mm (0.394”)
height
Buttons: Three, UP / OK / DN
Pin Connection: Display can be removed such
that the open connection allows
the sensor to be NEOCal
software capable.
Enclosure:
General Purpose: Polypropylene head with skirt to
support transducer w/ conduit
Intrinsically Safe: Aluminum thermal head with
skirt to support transducer w/
conduit. * Earth ground on
package external (min. 14
AWG)
Electrical Connections:
Power & Return: 2-pin quick connect terminal
block
NEOCal Connect.: 2-pin quick connect terminal
block
Display Connect.: 5-pin plug & socket
Conduit Connection: Single, 1/2 inch NPT
Transducer: Black, Polyvinylidene Fluoride
(PVDF)
Terminal Cable Size: 16 to 24 AWG
Process Mount: -7006: 2" NPT
-7012: 3” NPT
Compliance: CE, RoHS
Environmental:
Temperature: F: -40° to 176°
C: -40° to 80°
Temp. compensation:Automatic
Ambient temp.: F: -31° to 140°
C: -35° to 60°
Pressure: 30 psi (2 bar)
Enclosure:
General purpose: IP68
Intrinsically safe: IP66
Functional:
Range: -7006: 6.0m (19.69 feet)
-7012: 12.0m (39.4 feet)
Dead band: -7006: 20cm (8 inches)
-7012: 45.7cm (18 inches)
Accuracy: 0.2% of Range in air at 20 °C
Resolution: -7006: 2mm (0.079 inches)
-7012: 5mm (0..196 inches)
Beam width: -7006:7.6cm (3 inches)
-7012: 15.2cm (6 inches)
Menu: Self-scrolling

NEO 01/0820 Rev A 5 |
Introduction Step One
DIMENSIONS
Dimensions for NEO-7006 Series
Dimensions for NEO-7012 Series

|6 NEO 01/0820 Rev A
Introduction Step One
DIMENSIONS
Dimensions for NEO-7006-IS Series
Dimensions for NEO-7012-IS Series

NEO 01/0820 Rev A 7 |
Introduction Step One
INTRINSICALLY SAFE CONTROL DRAWING (NEO-7006-IS & NEO-7012-IS ONLY):
Intrinsically Safe Approvals:
Intrinsic Safe: 14-28 Vdc 22mA
Output: 4-20mAdc
Temp: -40°C to +80°C
Type 4X/IP66: US06 series
Approval Agency: cCSAus
General: CE, RoHS
Intrinsically Safe Entity Parameters:
U
i/Vmax = 28 VDC
I
i/Imax = 100 mA
P
i= 840 mW
L
i= 2.46 mH
C
i= 0 μF
CSA for U.S.:
Class I, Div 1, Groups A, B, C and D T4;
Class II, Div 1, Groups E, F, G T4;
Class III, T135°C;
Class I, Zone 0, IIC AEx ia T4 Ga,
Class II, Zone 20, IIIC AEx ia, T135°C, Da
CSA for Canada:
Class I, Division 1, Groups A, B, C and D T4;
Class II, Division 1, Groups E, F, G T4;
Class III, T135°C;
Ex ia IIC T4 Ga;
Ex ia IIIC T135°C Da;
IECEx:
Ex ia IIC T4 Ga;
Ex ia IIIC T135°C Da
Tamb: -40°C to 80°C
Install as per Control Drawing 600820

|8 NEO 01/0820 Rev A
Introduction Step One
REFLECTIVE TECHNOLOGY
Condensation is the most common variable in liquid level applications. Condensation attenuates the acoustic
signal of ultrasonic sensors with horizontal transducers, weakening their signal strength and signal to noise
ratio by up to 50%, and substantially reducing their measurement reliability. At the core of Reflective
Technology is a simple fact. Unlike flat horizontal surfaces, significant water droplets cannot adhere to smooth
vertical surfaces. By orienting the transducer vertically, condensation runs off the transducer and does not
affect sensor performance. The unimpeded transmit and receive signals are redirected to and from the liquid
off a 45º reflector, delivering reliable level measurement.
FLAT TRANSDUCER REFLECTIVE TRANSDUCER
Signal Attenuation Reliable Measurement

NEO 01/0820 Rev A 9 |
Introduction Step One
About this Manual: PLEASE READ THE ENTIRE MANUAL PRIOR TO INSTALLING OR USING THIS
PRODUCT. This manual includes information on the NEO-7 series Ultrasonic Level Transmitter from
KOBOLD INSTRUMENTS. Please refer to the part number located on the switch label to verify the exact
model configuration, which you have purchased.
User’s Responsibility for Safety: KOBOLD INSTRUMENTS manufactures a broad range of level
sensing technologies. While each of these sensors is designed to operate in a wide variety of applications, it is
the user’s responsibility to select a sensor model that is appropriate for the application, install it properly,
perform tests of the installed system, and maintain all components. The failure to do so could result in property
damage or serious injury.
Proper Installation and Handling: Only professional staff should install and/or repair this product. Never
over tighten the sensor within the fitting. Always check for leaks prior to system start-up.
Wiring and Electrical: A supply voltage of 14 to 28 VDC is used to power the NEO-7. Electrical wiring of
the transmitter should be performed in accordance with all applicable national, state, and local codes.
Material Compatibility: The enclosure is made of Polypropylene (PP) with the general purpose versions
and is made of aluminum for the intrinsically safe versions. The transducer is made of Polyvinylidene Fluoride
(PVDF). Make sure that the model, which you have selected, is chemically compatible with the application
media.
Enclosure: While the sensor housing is liquid-resistant the NEO-7 is not designed to be operational when
immersed. It should be mounted in such a way that the enclosure and transducer do not come into contact
with the application media under normal operational conditions.
Warning - Potential Electrostatic Charging Hazard (Handling Static-Sensitive Circuits/Devices):
When handling the transmitter, the technician should follow these guidelines to reduce any possible
electrostatic charge build-up on the technician’s body and the electronic part.
1. Always touch a known good ground source before handling the part. This should be repeated while
handling the part and more frequently after sitting down from a standing position, sliding across the seat
or walking a distance.
2. Avoid touching electrical terminals of the part unless making connections.
3. DO NOT open the unit cover until it is time to calibrate.
Make a Fail-Safe System: Design a fail-safe system that accommodates the possibility of switch and/or
power failure. KOBOLD INSTRUMENTS recommends the use of redundant backup systems and alarms in
addition to the primary system.
Flammable, Explosive or Hazardous Applications:
NEO-7006 & NEO-7012 series should not be used within classified hazardous environments. Only
the NEO-7006-IS and NEO-7012-IS are rated for use in hazardous locations. Refer to the certificate of
compliance for all applicable intrinsically safe ratings and entity parameters. Refer to the National
Electric Code (NEC) for all applicable installation requirements in hazardous locations.
Warning: Make sure that all electrical wiring of the switch is in accordance with applicable codes.
Warning: Use only specified replacement parts or Intrinsic Safety can be impaired.
Warning: To prevent ignition of explosive atmospheres, disconnect power before servicing.

|10 NEO 01/0820 Rev A
Getting Started Section Two
SETUP OVERVIEW
Below highlights the initial steps in setting up your sensor for operation.
1. Check Part Number (Section Two)
a. Confirm that the sensor’s part number matches the ordered part number and all components
are provided with the model delivered.
2. Measurements, Installation & Software (Section Two)
a. Understand the location placement of the sensor relative to Measurement Range including
Sensor Height and Fill-Height settings.
b. Download the NEOCal software from www.koboldusa.com.
3. Configure Sensor with NEOCal software (Section Three)
a. Section 3 contains information on using the NEOCal software.
4. Configure Sensor with Push Button (Section Four)
a. Section 4 contains information on using the Push Button Display to configure the sensor.
5. Install the sensor (Section Five)
a. Section 5 contains information about the sensor location placement and its mechanical
installation.
6. Wire the sensor (Section Six)
a. Section 6 contains information about the sensor’s electrical wiring and power requirements.
Note: When configuring NEO-7 series, choose either the NEOCal software or Push Button method. Either
method will accomplish the goal of sensor configuration. Changes to the configuration can be made using the
alternative method. When beginning with one method, it is recommended to complete the configuration before
using the other method to make any adjustments.
COMPONENTS
NEO-7 is offered in different models. Depending on the model purchased, you may or may not have been
shipped all the components shown below.
P/N Max.
Range Dead Band Thread Rating Output Configuration
NEO-7006 19.7’
(6m) 8” (20cm) 2” NPT
General
Purpose
4-20 mA
Display
with
Push Button
or
NEOCal
software
NEO-7006-IS Intrinsically
Safe
NEO-7012 39.4’
(12m) 18” (45.7cm) 3” NPT
General
Purpose
NEO-7012-IS Intrinsically
Safe
Manual

NEO 01/0820 Rev A 11 |
Getting Started Step Two
NEOCAL SOFTWARE VS. DISPLAY CONFIGURATION
NEO-7 can be configured using either the free NEOCal software and USB®Fob or with the internal display
module. Either method will accomplish the goal of sensor configuration. Changes to the configuration can be
made using the alternative method. Upon implementing one methodology, it is recommended to complete the
configuration before using the other methodology in making any adjustments.
NEO-7 can be configured before installation or after installation. The transmitter features non-volatile memory,
so any settings configured before installation will not be lost when the sensor is powered down. To start, the
following information is required:
Basic Tank Information
oHEIGHT (Sensor Height) – Distance from
the bottom of the tank to the bottom of the
sensor.
oFILL-H (Fill-Height) – Distance from the
bottom of the tank to the fill-height of the
liquid.
Power:
oProvide input power to the NEO-7
Note: The HEIGHT and Fill-Height (FILL-H) settings also determine the 4 to 20 mA current span. The
HEIGHT setting determines the 4mA position and the FILL-H setting determines the 20 mA position.

|12 NEO 01/0820 Rev A
Getting Started Step Two
UNDERSTANDING SENSOR HEIGHT (HEIGHT)
This is a critical setting for NEO-7. Sensor Height (SH) defines the location of the sensor from the bottom of
the tank. The value must take into account the shape of the tank and any risers, fittings, structures or
extensions associated with the tank or the installation (see examples below). The reference point for definition
of the Sensor Height is always the bottom of the transducer.
Simple Vertical Tank Dome Top Raises HEIGHT Sensor Off-center Changes HEIGHT
Simple Open Top Tank Sensor Extends into Sump Cone Bottom Elevates HEIGHT
Simple Horizontal Tank Riser Elevates HEIGHT Mounting Fixture Elevates HEIGHT

NEO 01/0820 Rev A 13 |
Getting Started Step Two
UNDERSTANDING FILL-HEIGHT (FILL-H)
This is another critical setting for NEO-7. FILL-H (Fill-Height) defines the location of the highest point in the
tank where the sensor will read level changes. When the level rises above FILL-H, the sensor will read full
(as long as the level does not enter the dead band). The reference point for definition of FILL-H is always from
the bottom location of the Sensor Height. The value must take into account the sensors dead band, any risers,
fittings, structures or extensions associated with the tank or the installation as well as the tanks geometry.
Example #1 – Flat Top Tanks
Tank A is a vertical tank with a flat top. The highest
value for FILL-H can be calculated by subtracting
the Dead Band from the Sensor Height.
FILL-H = Sensor Height – Dead Band
Tank B is another vertical tank with a riser that
matches the dead band of the sensor. In this case,
the FILL-H will be set to the top of the tank.
Note: The ratio of height to diameter of the riser
must be no greater than 2:1. Any higher and the
sensor will target the inside wall of the riser.
Example #2 – Dome Top Tanks
Tank C has a tall enough dome whereas the Dead
Band is above the straight side of the tank. The
FILL-H can be set to the top of the straight side
(this is advantageous because the top of the
straight side is typically a known volume of liquid).
The sensor is moved to a flat part of Tank D. As a
result, the Dead Band is now below the straight
side of the tank. FILL-H cannot be set to match the
straight side of the tank. Calculate FILL-H as
follows:
FILL-H =Sensor Height – Dead Band
Example #3 – Horizontal Tanks
Tank E is a horizontal tank with a rounded top.
The highest value for FILL-H can be calculated by
subtracting the Dead Band from the Sensor
Height.
FILL-H = Sensor Height – Dead Band
Tank F is another horizontal tank with a riser that
matches the dead band of the sensor. In this case,
the FILL-H will be set to the top of the tank.
Note: The ratio of height to diameter of the riser
must be no greater than 2:1. Any higher and the
sensor will target the inside wall of the riser.

|14 NEO 01/0820 Rev A
Getting Started Step Two
Example #4 – Cone Bottom Tank
Tank G and Tank H are both vertical tanks that are
being supported above ground level with tank
stands. The location of the Sensor Height (Tank
G - bottom of tank or Tank H – ground level) will
influence the FILL-H setting.
Note: FILL-H must always be referenced to the
lowest location of the Sensor Height.
Since Tank G is off of the ground, the lowest
location may be difficult to identify/measure. This
location is required if the Volumetric Mode in
NEOCal software is used.
Tank H uses ground level as the main reference
location. This method is easiest to use and ideal
for using the Distance Mode.
Cone and Rounded Bottom Tanks
The location of an NEO-7 installed along the top of a cone or rounded bottom tank may have an effect on the
installation of the sensor. Be sure to understand the geometry directly underneath the sensor. Cone or
rounded bottom tanks will provide off angled surfaces that can reflect the ultrasonic sound energy away from
the sensor as the liquid level is lowered.
#1 Center of Cone #2 Above an Angled Tank
Bottom (straight side only) #3 Above an Angled Tank Bottom (full range)
Tank
Geometry
Does not impede sensor’s
performance. Sensor is able
to track the entire range of
the tank.
Does not impede sensor’s
performance as long as the
level remains within the
straight side of the tank wall.
Does impede sensor’s
performance. The angled
bottom will reflect ultrasonic
energy away from the
sensor.
Distance
Reading
HEIGHT is typically set to
the bottom of the tank.
Sensor will track the full
range of the tank.
HEIGHT is typically set to
the bottom of the straight
side. Sensor will only tack
the straight side of the tank.
HEIGHT is set to the bottom
of the tank; the sensor will
function as long as the level
is within the straight side of
the tank.

NEO 01/0820 Rev A 15 |
Getting Started Step Two
SENSOR OUTPUT TO LOCAL DISPLAY/CONTROLLER
NEO-7 outputs a 4-20 mA signal to a local display/controller or to remote devices such as PLCs, SCADA, DCS
or other displays/controllers. The 4-20 mA signal is set relative to the Sensor Height and Fill-Height settings.
These settings create an operational range that can be translated into a level reading in defined units (i.e.
inches, feet, gallons, meters, liters, etc.).
Tank A Tank B Tank C
In the Tank A example, the Sensor Height sets the 4mA to the bottom of the tank. Fill-Height sets the 20mA to
the top of the straight side of the tank.
In the Tank B example, the 4-20mA sensor range is correlated to actual units of level measurement. The
operational range now will have engineering values of 0 to 10 feet or 0 to 1000 gallons or 0 to 120 inches.
In the Tank C example, the 20mA setting was lowered by 1 foot, so the engineering values for the new shorter
operational ranges are either 0 to 9 feet, 0 to 900 gallons or 0 to 108 inches.

|16 NEO 01/0820 Rev A
Configuration Using NEOCal Software Step Three
NEO-7 can be configured before installation. The transmitter features non-volatile memory, so any setting
configured before installation will not be lost when the switch is powered down. To configure, follow the steps
below:
1. Install NEOCal software
a. Go to www.koboldusa.com.
b. Review how USB®Fob interfaces with NEO-7 and your computer.
2. Measure the Tank
a. Begin by measuring the key tank and fitting dimensions.
b. Correct tank dimensions will result in accurate sensor measurement.
3. Sensor Configuration
a. Configures Loop Fail-Safe, Output at Empty & Startup Condition for the sensor.
4. Dimensional Entry
a. Distance Mode (default)
i. Basic information for operation (Sensor Height & Fill-Height).
5. Tank Level Confirmation
a. Confirm the values are accurate for the application.
6. Write to Unit
a. Uploads configuration into the sensor.
b. Access to a customer wiring diagram specific to the relay configuration.
Note: When configuring NEO-7, choose either the NEOCal software or Push Button method.
Either method will accomplish the goal of sensor configuration. Changes to the configuration can
be made using the alternative method. When beginning with one method, it is recommended to
complete the configuration before using the other method to make any adjustments.
Note: Do not connect the Fob to your computer until you’ve installed NEOCal software.
STEP 1 – INSTALL NEOCAL SOFTWARE
NEO-7 is configured through NEOCal software, a PC software program. The NEOCal software is a free
download from KOBOLD Instruments’s website. You must download and install the NEOCal software prior
to plugging in the USB®Programming Fob (NEO-PFOB). Please go to www.koboldusa.com to download
the NEOCal software.
NEOCAL SOFTWARE SYSTEM REQUIREMENTS
Windows®XP, Vista, 7, 8, 10
32 or 64-bit system
1 USB®2.0 port
10 mB hard drive space
256 mB RAM
Internet connection

NEO 01/0820 Rev A 17 |
Configuration Using NEOCal Software Step Three
NEO-PFOB INTERFACE
NEO-7 communicates with the NEOCal software through a USB®interface called the NEO-PFOB. Before
plugging your Fob (NEO-PFOB) into your computer’s USB®port, be sure that you have installed the NEOCal
software on your computer.
Connect the red, green, white and black wires from NEO-7 into the correct terminals on the Fob. Tighten the
screws on the terminals. Plug your Fob into the USB®port of your computer.
Wiring to Fob (using NEO-PFOB) NEO-PFOB USB
®
Fob
Wiring is identical for all NEO-7 Series – Use only the Red, Black, Green and White wires.
The maximum cable distance between the computer and NEO-7 is 15’. This only applies for configuring
the NEO-7.
Once NEO-7 is configured and prior to installation, isolate the white and green terminals from active power
to prevent a short from the configuration circuit.
Note: When using the Fob, do not add VDC or VAC power. The Fob, when connected to the computer, will
provide the required power to the NEO-7.
Note: When connecting the sensor to the NEOCal software, you must remove the display or the software
will not connect. Once completed, you can re-connect the display to the terminal.

|18 NEO 01/0820 Rev A
Configuration Using NEOCal Software Step Three
STEP 2 - MEASURE THE TANK
Measuring the tank is one of the most important aspects in
configuring the sensor. When measuring the tank, take
into account the location of the sensor with respect to
fittings, risers, dome tops and bottoms, and identify where
the measurements are taken from the sensor. The Sensor
Height is influenced by the installation location. Sensors
mounted along the sloped portion of the tank will result in a
lower (HEIGHT) value. On the other hand, sensors
installed in risers/nozzles will result in a higher (HEIGHT)
value.
The basic measurements (Height and Fill-H) for configuration are described below:
1. HEIGHT (Sensor Height) - Distance from the bottom of
the tank to the Bottom of Sensor.
a. The bottom of the tank will be the sensor’s zero
level / empty level.
b. This setting determines the 4mA location.
2. FILL-H (Fill-Height) - Distance from the bottom of the
tank to the level of liquid where the tank is full is FILL-H.
a. The FILL-H is typically set to the liquid full level.
b. This setting determines the 20 mA location.
c. 20mA cannot be set within the sensor’s dead
band [8” (20cm) from bottom of sensor]. Largest
FILL-H value will be as follows:
Largest FILL-H = HEIGHT – 8” (20cm)

NEO 01/0820 Rev A 19 |
Configuration Using NEOCal Software Step Three
With NEO-7 connected to your computer, open the NEOCal software by clicking on the software icon. Follow
steps 3-6 to configure the transmitter. Click “Help” in the lower right hand corner and open the help menu of
instructions on the NEOCal software.
STEP 3 - SENSOR CONFIGURATION:
Configures the Loop Fail-Safe, Output at Empty and Startup Condition for the sensor.
Note: When connecting the sensor to the NEOCal software, you must remove the display or the software will
not connect. Once completed, you can re-connect the display to the terminal.
Note: When configuring NEO-7, choose
either the NEOCal software or Push Button
method. Either method will accomplish the
goal of sensor configuration. Changes to
the configuration can be made using the
alternative method. When beginning with
one method, it is recommended to
complete the configuration before using the
other method to make any adjustments.

|20 NEO 01/0820 Rev A
Configuration Using NEOCal Software Step Three
STEP 4 – DIMENSIONAL ENTRY:
Distance Mode (default): Output of sensor is based on the distance (height of liquid) in the tank. Any
change in liquid level will reflect linearly to the current output. Note: Most applications will fall into this
category. For Volumetric outputs, refer to VOLUMETRIC CONFIGURATION on page 40. The two
values (Sensor Height and Fill-Height) below set the 4-20 mA current span for the sensor. Both values
will be set in the units shown under Height Units.
Sensor Height: Sets the location for 4mA. It is based on the distance from the Empty level
position (bottom of tank) to the Measurement location for the sensor (bottom of sensor).
Fill-Height: Sets the location for 20mA. It is based on the distance from the Empty level
position (bottom of tank) to the Full level position (see below).