RCS EPSILON EN, EPSILON EZ Instruction Manual
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The fuel level sensor
"EPSILON"
Models EN and EZ
Instruction manual
EN.000 RE (EN)
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Content
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Introduction
3
1. Description and operation
3
1.1. Description of the sensor operation
3
1.2. Description of the components operation
18
2. Operations
20
2.1. Operation limits
20
2.2. Explosion-proofness
2.3. Preparation for use
21
2.4. Usage
22
3. Technical maintenance
23
3.1. Technical maintenance of the sensor
23
4. Current maintenance
26
4.1. Current maintenance of the sensor
26
4.2. Current maintenance of the components
26
5. Transportation and storing of the sensor
29
This instruction manual is designed to inform users about operation and maintenance
of the fuel level sensor "EPSILON" models EN and EZ, hereafter referred to as the
sensor or FLS.
The staff, which operates this sensor, must read this instruction manual carefully.
This instruction manual is referred to all the modifications of "EPSILON" models EN
and EZ.
This sensor doesn’t generate any hazardous emissions and doesn’t produce any other
negative effects on humans and the environment.
1. Description and operation
1.1. Description of the sensor operation
1.1.1. Product designation.
This sensor is designed to measure fuel level inside fuel tanks of vehicles and stationary
fuel storages. The sensor could be applied for measurement of any non-conductive
FLSids.
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The sensor should be applied with equipment that supports a unified protocol of
Epsilon Data Exchange (hereafter referred to as EDE).
The sensor is compatible with various kinds of control units, concentrators and GPS
monitoring devices, such as:
- "Autograph";
- "Scout";
- "Locarus";
- "Intellitrac";
- "Patriot";
- "Teletrack";
- "Teltonika";
- "M2M – Cyber GLX";
- "Ruptela FM";
- "FM blue" and others.
1.1.2. Specifications.
Table 1.1.
Characteristic or parameter
Unit
of
meas
ure
ment
Value
Remark
1
2 3 4
General
Working temperature range
С
– 40 … + 75
Measuring head dust and moisture
protection level
IP67
Operating regime
Continuous
Measurement
Upper limit of the level measuring range,
depending on modification
mm
from 150 to
3000
(1)
The limits of reduced error level
measurement
%
±1.0
(2)
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Relative electric permittivity range of values
for operating FLSid (ε)
1.5…3.3
Models
EXXxх-XXXX
1.5…5
Models
EXХRxх-
XXXX (3)
Averaging period of measurement results
с
0…32
Measurement information width
bit
10;12;16
(4)
Data rate of COM port
bits
per
seco
nd
2400, 4800,
9600, 19200,
38400,
57600,
115200
Selected by
program
Estimation of vehicle inclination
The range of vehicle inclination estimation
degre
e
±75
(5)
Resolving ability of vehicle inclination
estimation
degre
e
0.1
(5)
Data interpretative code width
bit
16
(5)
Estimation of measuring head
temperature
The range of measuring head temperature
estimation
°С
- 40…+ 85
The width of measuring head data
interpretative code
bit 8
Built-in data concentrator
Maximum number of connected external
FLS
pcs 7 (6)
Maximum number of calibration chart
records for all FLS
pcs
960
(7)
Maximum number of calibration chart
records for random FLS
pcs
960
(7)
Measurement information width
bit
10;12;16
Power
Supply voltage, operational range
V
from 9 till
36
Nominal
Useful current, no more than
m
50
Model EN
250
Model EZ
(8)
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Permissible impact of impulse voltage
through power circuits
V
+160, 1 s
-1000,
continuous.
(8, 9)
Permissible short-time impact of electric
potential between signal ground and
measuring head cabinet
V
1500
(10)
Interface
Digital
RS-232
Model EN2
RS-485
Model EN4
RS-232 and
RS-485
(independent
)
Model EN6
RS-232 or
RS-485
(dependent)
Model EZ6 (11)
Connection dimensions, weight
Modification of flange
5 holes
diameter 4.5
mm
(12)
Type of fuel probe connecting thread
М36×1.5
Height of measuring head over tank surface,
including flange, no more than
mm
30
(13)
Sensor weight, no more than
kg
3.2
(14)
Notes
1 The level measuring range is the distance Ly between the cap claw (where there is)
or the cap bottom surface (without cap claw) of the fuel probe and drain port bottom
edge, which are minimum and maximum scale values respectively (see fig 1.1).
2 For fuel control with the same dielectric permittivity for the fuel, which used for
calibration. For other kinds of fuel, the personal should use calibration chart
(according to fuel dielectric permittivity table).
3 For level measurement of other dielectric liquids, it is necessary to use other
special fuel probe types, depending on the liquid parameters and operation
conditions.
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4 There are two formats of data representation: 16 and 10; 12 bits. Capacity 10 or 12
bits is defined by programming controller. Default value is12 bit.
5 For both of two axes (lateral and transversal).
6 External FLS connections are possible for model EN6 only. For other models it is
possible to use internal calibration chart only. Quantity of external connected FLS
depends on ports functionality. If port RS-232 is mapped, maximal possible quantity
of connected external FLS is 1, otherwise (port RS-485) – 7.
7 Total amounts of calibration chart records could be distributed randomly between
any FLS. Calibration chart of any FLS could be absent (no records) or all records
could be belonged to single FLS.
Total amount of all FLS calibration chart records couldn't be more than 960.
If FLS doesn’t contain calibration chart for actual volume estimation, actual level
and volume of the tank are applied.
8 For the model EZ the parameter is shown for simultaneous usage of the FGU and
electrical protection unit BIZ-EZ.
9 Impulse parameters comply with requirements of State Standard 28751-90 (ГОСТ
28751-90) (unit class А, degree of fixity 3 for 24 V of supply-line voltage).
10 Exposure time is up to 1 second. For EZ model unit– voltage difference between
signal ground of spark protection block and measuring head cabinet.
11 For EZ model unit concurrent operating is possible by single interface only.
12 Other modifications of flange are possible by agreement with the customer.
13 Except packing washer.
14 Total weight of the sensor depends on the length and modification of its fuel prob.
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Fig.1.1
1.1.3. Contained parts.
1.1.3.1. Main contained parts.
The main contained parts are the probing device and attached detecting head, which
is fixed to FS tank surface with flange (Fig 1.2).
Fig.1.2. General view of FLS with string central contact (left) and pluggable central
contact (right).
1.1.3.2. Product designation and brief summary of the model range
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There are different identification marks of sensor, depending on the interface type,
measuring liquid dielectric permittivity, presence of tilt meter, probing device type
and length.
Fig. 1.3.
Epsilon EN2" – provides data exchange by RS-232 interface. "Epsilon EN4" provides data exchange by RS-485 interface.
"Epsilon EN6" – has two independent interfaces: RS-232 and RS-485. This sensor
is able to be a data concentrator for other FLS.
"Epsilon EZ6" – is operated only together with spark protection unit BIZ-EZ. Spark
protection unit BIZ-EZ - provides explosion protection of sensor model "EZ" and
data exchange by RS-232 and RS-485 interfaces.
1.1.3.3 Sensor identification to order.
1.1.3.3.1 Sensor identification contains of:
Designation;
space
- absent
i
- presence of tilt meter
m
- data processing considering
tank models
E Х 6 R i m - H 075
Identification of
measuring head
Identification
of fuel probe
Model
Interface type
2
- RS-232
4
6
- RS-232+RS-485
8
- CAN
For measurement
of liquids
dielectric
permittivity
space
- from 1.5 to 3.3
R
- from 1.5 to 5
operational characteristics
and combinations
Fuel probe design
space
- string
H
- pluggable
Fuel probe length (cm)
EN
EZ
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Sensor type - "Epsilon"
Model designation;
Interface type;
Relative electric permittivity range of values for operating fluids;
Operational characteristics
Modification of fuel probe;
Fuel probe length (cm);
Identification of these specifications.
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