Sigma ULM ULV ULB ULS

The SIGMA ULS non-invasive ultrasonic riviege sensor is designed for non-contact vimiruvanny rivie gas (propane-butane) for horizontal hot gas transport tanks.

Pristry designations for the owners of transport services with HBO. The SIGMA ULS sensor permits stitching over a sandstone at a balloon in high water and at refueling at a gas station. Allow you to fill out, control the critical level of the sand at the tank and, more accurately, see the value of the transport gap.

Description	Unit	Value	Notes
General
Type of measured fuel		LPG
Allowed tilt angle of vehicle when measuring level, max	degrees	12
Container wall thickness	mm	1,5…4,0
Operational temperature range	degrees C	– 40 … + 70
Measuring part ingress protection rating		IP67
Transducer ingress protection rating		IP50
Protection rating for indicator		IP50
Mode of operation		continuous
Measurments
Indicator resolution capability	liters	1
Measurement range	mm	20…600
Averaging period	sec.	30
Code length of presentation of measurement results	bit	10/12/16	level
Code length of presentation of measurement results	bit	8	temperature
Exchange rate through the serial port	bps	2400, 4800, 9600, 19200, 38400, 57600, 115200	Programmed, default setting - 19200
Power Supply
Power supply voltage, operational range	V	+9 …+36	Nominal value
Current consumption, max	mА	70	temperature
Interface
Digital		RS-232
Digital		RS-485

The SIGMA ULV non-invasive ultrasonic level sensor is designed for contactless measurement of the level of liquefied gas (propane-butane) in the horizontal position of the vehicle's fuel cylinder.

The device is intended for owners of personal transport with installed HBO. The SIGMA ULV sensor allows you to monitor the amount of fuel in the tank on the road and at the gas station. This gives the ability to track downfills, control the critical level of fuel in the cylinder and more accurately determine the fuel consumption of the vehicle.

Compared to the SIGMA ULS, the SIGMA ULV has a new compact indicator and a separate processor unit.

Description	Unit	Value	Notes
General
Type of measured fuel		LPG
Allowed tilt angle of vehicle when measuring level, max	degrees	12
Container wall thickness	mm	1,5…4,0
Operational temperature range	degrees C	– 40 … + 70
Measuring part ingress protection rating		IP67
Transducer ingress protection rating		IP50
Protection rating for indicator		IP50
Mode of operation		continuous
Measurments
Indicator resolution capability	liters	1
Measurement range	mm	20…600
Averaging period	sec.	30
Code length of presentation of measurement results	bit	10/12/16	level
Code length of presentation of measurement results	bit	8	temperature
Exchange rate through the serial port	bps	2400, 4800, 9600, 19200, 38400, 57600, 115200	Programmed, default setting - 19200
Power Supply
Power supply voltage, operational range	V	+9 …+36	Nominal value
Current consumption, max	mА	70	temperature
Interface
Digital		-
Digital		RS-485

The non-invasive ultrasonic level sensor SIGMA ULM is designed for contactless measurement of the level of liquefied gas (propane-butane) in horizontally positioned fuel gas cylinders of vehicles.

SIGMA ULM is a device designed for commercial vehicle fleets operating with HBO installed. The sensor works as part of the GPS monitoring system. This device allows you to control the volume of fuel, fuel drain, fuel remaining in the cylinder.

When working as part of a GPS monitoring system, the fuel data is transmitted to the central server and can be viewed either in real time or in the form of reports for any selected time interval. Based on this data, it is possible to obtain fuel consumption, quantity, location and volume reports.

Description	Unit	Value	Notes
General
Type of measured fuel		LPG
Allowed tilt angle of vehicle when measuring level, max	degrees	12
Container wall thickness	mm	1,5…4,0
Operational temperature range	degrees C	– 40…+ 70
Measuring part ingress protection rating		IP67
Transducer ingress protection rating		IP50
Mode of operation		continuous
Measurments
Indicator resolution capability	liters	1
Measurement range	mm	20…600
Averaging period	sec.	30
Code length of presentation of measurement results	bit	10/12/16	level
Code length of presentation of measurement results	bit	8	temperature
Exchange rate through the serial port	bps	2400, 4800, 9600, 19200, 38400, 57600, 115200	Programmed, default setting - 19200
Power Supply
Power supply voltage, operational range	V	+9 …+36	Nominal value
Current consumption, max	mА	70	temperature
Interface
Digital		RS-232
Digital		RS-485

General information

The sensor is used for continuous non-invasive, digital, automatic measurement of LPG level and other liquids such as water, chemicals.

Sigma ULB measures the level mainly in aboveground stationary cylindrical metal tanks from 10 cm up to 4 meters depending of the liquid density.

The sensor has measurement error from 5% up to 1 mm depending on the model. Can be installed in the 0 explosive zone.

The sensor is a device that consists of one or two ultrasonic emitters / meters connected to a signal converter.

The converter is connected to intrinsically safe unit. The barrier is not included in the installation set and supplied as a separate, independent product.

Sigma ULB has RS 232, RS 485 output and can be easily connected to GPS tracker, PC, notebook, smartphone or digital indicator.

General installation scheme

Sensor range

The sensor range consists of the following versions:

• ULB-10 - 1 ultrasonic meters with inbuilt temperature sensor + converter. Measuring error – 5%

• ULB-20 - 2 ultrasonic meters, one with inbuilt temperature sensor + converter and intrinsically safe unit. Measuring error – 2%

• ULB-30 - 2 ultrasonic meters + separate temperature sensors depending on tank size, + converter and intrinsically safe unit. Measuring error – 1mm.

Ultrasonic meters and converter have II2GExibIIВT4Gb explosive marking.

Intrinsically safe unit has II(1)G[ExiaGb]IIB explosive marking.

Installation

Installation should be done according to the manual with the qualified specialists.


Bottom installation of the ultrasonic meter	Bottom installation of ultrasonic meter with inbuilt temperature sensor + side installation of the second ultrasonic	Bottom installation of ultrasonic meter + side installation of the second ultrasonic meter. A number of temperature sensors depending on the tank size.

Operation principle

Sigma ULB emit ultrasonic waves into the tank and receive the reflected signal, which is transmitted to the converter.

The lower ultrasonic meter measures the distance to the separation of liquid.

The side ultrasonic meter is used to measure the properties of the liquid (speed of sound). It corrects the readings of the lower meter in order to increase the accuracy of measurements.

In the ULB-30 model, a number of side mounted temperature sensors are connected to the ultrasonic meter. They measure the temperature of the liquid, which is also intended to increase the accuracy of measurements.

The converter calculates the level according to the results of processing information from the meters. It transmits data through the external galvanic isolation in the intrinsically safe unit. The unit, in its turn, is connected to external device for further processing via the RS-485 or RS-232 interface.

Specification

ULB sensor characteristics			Value
Resolution, mm			0,1
Measurement error :
ULB-10			5%
ULB-20			2%
ULB-30			±1 мм
Temperature range, °С			– 40 … + 75
IP protection rateмм			IP67
Explosion-proof marking			II 2G Ex ib IIВ T4 Gb

Intrinsically safe unit characteristics			Value
Voltage, V			+9 …+36
Temperature range, °С			– 40…+ 75
IP protection rate			IP67
Current consumption, max mA			250
Explosion-proof marking			II (1) G [Ex ia Ga] IIB
Communications interfaces			RS-485/RS-232
IP protection rate, мм			RS-485/RS-232
Explosion-proof marking			II 2G Ex ib IIВ T4 Gb