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SL1188 Ultrasonic flow meter


Kategori:Site Lab Ultrasonic Flow Meters
Deskripsi:
SL1188 Industrial Non-Invasive Ultrasonic Transit-Time Flow Meter


GENERAL DESCRIPTION


The SL1188 Ultrasonic clamp on flow meters is a state-of-the-art universal transit-time flowmeter designed using SLSI technology and low voltage broadband  pulse  transmission.  While  principally  designed  for  clean  liquid  applications,  the  instrument  is  tolerant of liquids with small amounts of air bubbles or suspended solids found in most industrial environments.


The SiteLab SL1188 Flow meters is a state-of-the-art universal transit-time Flow Meter for Heavy Industrial applications. Sophisticated electronics incorporating the latest developments in digital signal processing coupled with powerful ultrasonic transducers deliver highly accurate flow measurement for liquids in full pipes. While principally designed for clean liquid applications, the instrument is tolerant of liquids with a small quantity of air bubbles or suspended solids common in most industrial applications.

The SL1188 ultrasonic clamp on flow meters offers low power consumption, high reliability, and outstanding applicability at an economical price. An easy to read display and clear, user-friendly menu selections make using the instrument simple and convenient. The instrument can be configured via keypad without any additional programming devices, is packaged in a die cast IP65 housing, and is available in your choice of non-invasive clamp-on or insertion transducer configurations.

The SL1188 ultrasonic flow meters features a self-contained 4-20 mA current loop signal output for instantaneous flow, as well as two independent temperature inputs for thermal energy monitoring. The instrument also features a 7 digit alpha- numeric display, parallel operation of positive, negative and net flow totalizers (with user-selectable scale factors) and configurable pulse and frequency outputs (transmitted via relay and open collector) for totalized flow.
As standard it incorporates a 1G SD Card for data logging and is supplied with the software to download stored data to your PC.

Features :
Accuracy +/-0.5% of Reading
Wide operating temperature range -40C to 150 C
One meter for a wide range of pipe sizes 25mm-5000mm
Clamp-on sensors are simple to install, leading to lower installation and labor costs
Clamp-on sensors mean no pipe cutting or process interruption and no plant shut-down
Wetted Sensors available for acoustically dead pipes.
Hygienic measurement, no risk of contamination, suitable for ultra clean liquids
Wide bi-directional Flow range of 0 to 12Metres/Second
Daily, monthly and yearly totalized flow
Internally configured batch controller makes batch control convenient
Measurement is independent of fluid conductivity meaning a wider applicability than magnetic meters
1G SD card high memory data logging, maximum memorize 512 days data.
Simple Menu driven setup with a wide range of common pipe materials, liners and fluids selectable.
Temperature inputs for energy measurement.



SPECIFICATIONS :

Transmitter (standard):
Flow range: 0 to ±40ft/s (0 to ±12m/s)
Accuracy: ±0.5 of reading
Repeatability: 0.15%
Power supply: internal lithium battery with 8 hours of use
Output :
0/4~20mA, maximum 750Ω
OCT pulse, 0~10 KHz
Relay Output , 125VAc@1A 0r 30VDc @2A

Communications: RS232 / RS485
Power consumption: 2 W
Weigh t: 4.7lb s (2.15kg)

S type clamp on transducers(standard):
Measurement pipe range:1” to200”(25mm to 5000mm)
Enclosure material: Die-cast alloy
Protection  rating: IP68
Explosion-proof rating (sensors): Ex ia  II BT4
Medium temp.: -40F to 176F (-40o C to 80oC)
Transducer cable standard length: 30ft (9m) standard
Weight (1set, including cable): 2.0lbs (0.9kg)

Parameter
 Flow Data storage : 1GB (512 days)
Cable signal attenuation : -0.9dB/100m
Transducer cable tensile  strength: 800 Newtons
Mean Time Between Failures (MTBF): 50,000h
Time resolution: 40 picoseconds
Display update rate : 2 times/s
CPU number: 3
Keypad keystroke life: 20 million times

Application Example :
Water distribution  networks – water quality monitoring systems

The SL1 188E ultrasonic flow meter can be used to measure flow and provide water quality data acquisition at the same time. Data for flow, pressure, turbidity , residual chlorine and pH can be collected at the same time. The system is simple, reliable and convenient to use.
Use GPRS wireless communications for wide coverage and reliable communications.  There is no need to install outdoor antennas which greatly shortens project install ation and startup time and reduces total  project cost greatly .
The SiteLab Ultrasonic flow meter can be installed out side of the pipe with clamp on transducers or hot-tapped in to the pipe using wetted insertion transducers under pressure without flow interruption, making it very convenient to do network changes.
Work stations can use SC1000 data acquisition software to extend the data acquisition function. Powerful open data base scan be used to provide other software data, such as: ODBC, DDE, OPC, Active X, etc.
 Powerful reporting functions can be generated on demand to  generate daily reports, weekly  report s, monthly reports, etc.

Explosion-proof enclosure (Optional) :

If going to place a sl1188 ultrasonic flow meters in an explosive atmosphere  (hazardous area), the ultrasonic flow meter’s explosion proof enclosure should be installed in a positively vented area. Before connecting the power supply, the user should create positive ventilation more than 5 times the enclosure volume for air exchange. The user must install the ultrasonic flow meters wiring in a safe area that  would not cause sparking or arcing due to short circuiting or wire breakage. Cables and wires should be installed through explosion-proof conduit. Explosion-proof threaded conduit unions should be used between the wired conduits, conduits and junction boxes. The available thread. engagement  into the fitting should be more than 5-6 threads. When flexible connections are needed, ex-proof flexible cable conduits can be used.

Material :Die-cast al uminum
Explosi on-proof rating : Exd Ⅱ BT4
Electrical   interface : 4×G1/2 ″
Wmm: 0.15
Ra:  3.2

Installation Site Selection

When selecting a measurement site, it is important to select an area where the fluid flow profile is fully developed to guarantee a highly accurate measurement. Use the following guidelines to select a proper installation site:
- Choose a section of pipe that is always full of liquid, such as a vertical pipe with flow in the upward direction or a full horizontal pipe.
- Ensure enough straight  pipe length at least equal to the figure shown below for the upstream and down stream transducers installation.


Clamp-on Transducers Installation Methods 


Clamp-on Ultrasonic Flow meters are installed simply by applying coupling compound on the bottom of the transducers and strapping them to the outside of the pipe. SiteLab Clamp on Ultrasonic Flow meters are internationally known for their simple and convenient installation and low maintenance characteristics.
V method installation on pipe size :1” to16”(25mmto 400mm.






wma flowliquid Updated at : 19.30