Easy installation

Compact bubble sensor for an exact water level measurement

Building site

Measuring site

Pneumatic gauge

Pressure sensor pneumatic gauge PS-Light-2

www.seba.de D03_PS-Light-2_e 22.05.2019

Application at a river

l Economic measuring system acc. to the bubble principle

l Highly precise and robust by drift free sensing

l Compensation of temperature influence

l Processor supported sensor linearisation

l Low energy consumption thanks

l Optionally with RS485, SDI-12, 0/4..20mA, 0..1V, 0..5V, BCD-, Binary- or Gray-Code output

to intelligent pump control

l Modular system

Short description

PS-Light-2

PS-Light Station

Installation togetherwith Powerbox

Description

The SEBA-pneumatic gauge type PS-Light-2serves as a robust, economic and reliable measuring system for monitoring water levels in surface waters. The measuring principle is the proportioning or bubbler system, based upon the other well-known SEBA instruments in the PS-series.An integrated, highly efficient mini compressor, bubbles air through the pressure tube into the water at adjustable intervals. The resultant pressure in the tube corresponds exactly to the hydrostatic pressure above the mouthpiece. This tube pressure is then measured by a very accurate pressure sensor in the PS-Light-2 .

The intermittent operation of the PS-Light-2 allows low energy consumption, and enables operation with batteries or solar panels, without the need for mains power supply.

The basic version of the is a sensor PS-Light-2with optional output. However it can be equipped with LC-display, datalogger or remote data transfer via mobile data. The basic version is delivered in a robust protective housing (IP65) suitable for wall or desk mounting. SEBA PS-Light-2 can be connected to existing pressure tubes at any time.

pressuretube

pneumatic gauge PS-Light-2

mouthpiece

- sensor with analogue or digital output

- 0/4..20mA

- BCD-Code, Gray-Code, Binary-code

Individually available as:

- data transmission system with mobile modem

Options:

- sensor with SEBA datalogger

1. LC-display2. output signals: galvanically separated - Rs485, SDI-12

- 0..1V, 0..5V

mouth piece / orifice

bubblertube

key for manual purging

signal output0...5V, opt. 0/4...20mA, Gray, BCD, Binary

air inlet zero set

RS232 (optional USB)Configuration & readout interfacefor connection to HDA, Laptop etc.

supplyenable

pressure compensation

sensor Rs485 interface/SDI-12

SEBA data loggerintegrated

online

online

on

lin

e

offline

mobile data, FTP-Push, SMS data transmission

Notebook

- data logger of other manufacturers- SPS - Data Transmission Systems

PS-Light-2

HDA-Tablet

Data flow

PS-Light-2 Variations

0..

1V,

0..

5V,

0/4

..20m

A

PS-L

ight-

2-S

ensor

BCD

, G

ray,

Bin

ary

PS-L

ight-

2-S

ensor-

LCD

Rs232(Rs485)SDI-12

BCD

, G

ray,

Bin

ary

PS-L

ight-

2-L

CD

PS-L

ight-

2-3

G+

0..

1V,

0..

5V,

0/4

..20m

A

PS-L

ight-

2

mobilemodem

consisting of:PS-Light - 2 Sensor

— Plastic Protection Housing

— Highly accurate pressure sensor for mea-

suring the water level

— Output: can be chosen

— Miniature compressor

same as PS-Light-2 Sensor but additionally with:PS-Light- 2 (-Logger)

— Data Logger

with RS232 interface

PS-Light - 2 - 3G+

— with integrated mobile modem— for online- and offline operation

— LC-Display for digital indication

of current water level

same as PS-Light-2 Sensor but additionally with:

— Data Logger

with RS232 interface

PS-Light - 2 Sensor LCDsame as PS-Light-2 Sensor but additionally with:

— LC-Display for digital indication

of current water level

PS-Light - 2 (-Logger) LCDsame as PS-Light-2 Sensor but

— Data Logger

with RS232 interface

additionally with:

— LC-Display for digital indication

of current water level

Optional:

Puck antennaDirectional Antenna (for mast mounting)bubble mouth piece (orifice)pressure tube**

**Pls specify length of tube when ordering!

SEBAConfigWinOperate DEMASdBWiski/Soda

SEBAConfigDEMASdBDEMASvisDEMASole

PC - Desktop Computer

represented by:

Technical Data

Fotos: © SEBA Hydrometrie GmbH, Pixelio.de

or via Notebook with SEBA Config or via HDA-Pro

Transfer of Measuring Data to PC

Online: analogue, via 0...5V resp. 0/4...20mA output signal

Offline: via HDA-Tablet

or via fixed network telephone communication digital, via GSM/GPRS network

The right is reserved to change or amend the foregoing technical specification without prior notice.

Power Supply

Readout & Configuration : SEBAConfig and DEMASole

- PS-Light powersupply, 220VAC/12VDC

- Solar power supply is possible

Software

- PS-Lightpowersupply, buffered with 7,2Ah - Battery 100Ah

Management /Evaluation Software: DEMASdB / DEMASvis

- PS-Light powersupply, buffered with 100Ah

Housing for measuring range: Weight:

PS-Light-2: plastic material (Ip65), 0-10 m 240(W) x 160(H) x 94(D) mm 1,6kg

0-40 m 250(W) x 410(H) x 100(D) mm 4,5kg

PS-Light-2 (for all types):

Sensor linearity: 0,05% of the measuring range Total Accuracy: Linearity + Hysteresis + Repeatability < 0,1%

Measuring Range: 0 - 10m, 0 - 20m, 0 - 40m, 0 - 70m

Analog resolution: 14Bit = 0,008%

0-20 m 240(W) x 160(H) x 124(D) mm 2,0kg

Outputs: 0-1V or 0-5V or 0/4...20mA, optional: Rs485 Modbus, SDI-12, BCD-, Binär-, Gray-Code

Digital resolution: 16Bit = 0,002%

Clock-, average- and eventmode are freely programmable

Interface: RS232, Rs485, USB, Bluetooth

Measurement storage: Ring storage, 16-bit resolution, storage of check values.

Supported networks: GSM/GPRS/EDGE/UMTS/HSDPA/HSDPA+

SIM-card: 1.8V / 3V

Flash-Memory: 16 MB for approx. 1.120.000 measuring values

SEBA - Data Logger (for types PS-Light-2 Logger and PS-Light-2 Logger LCD):

Microprocessor: 32Bit

Option: LC-Display for instant indication of water level

Operation Temperature: -20°C to +60°C

max. 32 channels (water level, battery voltage, external channels RS485)

Mobile Modem (for type PS-Light-2-3G+):

Antenna impedance: Dual band antenna TNC-connector 50 Ohm

Max. consumption: max. 400mA

Measuring Interval: freely programmable from 2 minutes via software SEBAConfig

Measuring Interval: freely programmable from 2 minutes via software SEBAConfig

Frequency: 850/900/1700/1900/2100 MHz (Worldwide)

Power Supply: 11...15 VDC

technical data for HDA and HDA-Pro pls see separate brochure HDA-Tablet

HDA-Prorobust tablet-PC

SEBAconfig

DEMASvis

Gewerbestr. 61a • 87600 Kaufbeuren • Germany

SEBA Hydrometrie GmbH & Co. KG

E-Mail: info@seba.de

Phone: +49 (0)8341 / 9648-0

Internet: www.seba.de

Fax: +49 (0)8341 / 9648-48