 Model Number |
HANLA-Tokyo Keiso |
■ General
The SPT-3500 LIQUID LEVEL is the newest version of magnetic float level gauge
for marine tankers which has been developed based on the long time field experience.
The detection of float position is conducted by HALL IC elements to eliminate
problem of contact fusing and/or accuracy failure caused by existing reed switch
system.
By this remarkable sensing system, long time stability and maintenance free
operation have been achieved.
The measurement is free from the conductivity and/or dielectric constant of
the cargo liquids.
Thus SPT-3500 is widely suitable for measurement and control or cargo liquid
levels at crude oil carriers, coaster tankers, product carriers chemical carrier,
etc.
LEVEL ALARM SYSTEM is perfectly separated from level and temperature monitoring
system electrically, and the independent level alarm sensor is separated from
level and temp. sensor too.
When the liquid level reaches a set point, the reed switch is actuated by magnetic
float. This signal is connected to annunciator card through safety barrier.
At the same time, we can get audible and visible alarm on the main control panel
as well as external alarm on the bridge top.
The 95% of volume is normally for high alarm, and 98% of volume is normally
for overfill alarm.
■ System Construction
|
System/Model
|
Description
|
Level Sensor
|
Safty Barrier
|
Main Control Panel
|
|
Cargo Monitoring System/
CMS-MIA-H SPT-3500
|
Intrinsically safe
Level and temp.
Monitoring
System
|
Local Gauge
SPT-3500S-3R
|
TZB-101
|
Multi-Monitor
DIR-M1600 II
|
|
Independent leve
Alarm system
- High level alarm
- Overfill alarm
|
Level Switch
TMR-701T
TMR-702T
|
KFD2-SR2-Ex2.W
|
Alarm Module
8510
|
■ Features
- Compact and cost saving design.
- HALL IC Elements, pure electric position detection:
-Grade up from existing reed switch system.
-Highly reliable and stable for long time operation.
-Highly precision for operation.
- 3 Point of temp. measurement and transmission.
- 16 Bit CPU Data processing:
-Intelligent signal processing unit with 16 bit micro processor achieves high
reliability and high function such as self-diagnosis and setting of measuring
liquid density.
- Separatable LCD indicator.
-LCD indicator may be separated from the sensor.
- 2 Core cable data transmission and easy wiring:
-Liquid level and maximum 3point temp. data are sent to CCR by serial BCD
signal through 2 core cable only including power supply to the deck.
- Full line up of CCR indication system:
-Full line up from individual indicator to computer based system is ready
to meet for requirements.
■ Application
This system is used for monitoring for level, alarm and temperature of the
liquid in cargo tanks.
■ Technical specification for system
|
Detection unit
|
Alarm - by magnetic float and reed switch type.
Level - by magnetic float and HALL IC element.
Temp. - by PT-1000RTD. |
|
Accuracy
|
Alarm - ±5m/m on level rise or fall
Level - every 10mm(standart), every 5mm(option)
Temp. - ±1.0°C |
|
Measuring range
|
Alarm -95%, 98% of volume
Level - Max. 40m
Temp. - -25~150°C |
|
Construction
|
Alarm - IP56 over and intrinsically safety EEx ia II C T6
Level and temp. - IP56 over and intrinsically safety EEx ia II C T4 |
|
Indication
|
By selector type LCD 6digit indication
1) Level - 5m/m unit(0~39999m/m)
2) Temp. (U : upper)°C or °F unit, (M : middle)°C or °F
unit, (L : lower)°C or °F unit |
|
Output
|
Digital serial code pulse (2wire system including power supply, exclusive
receiving unit is required) |
|
External alarm
|
High and overfill alarm on the bridge top. |
|
Power source
|
AC 110/220V, 60HZ/Back up source : DC24V |
|
Specific gravity
|
Min. 0.65~1.5 |
|
Installation
|
JIS 5K 150A FF, 5K 200A FF |
|
Conduit connection
|
JIS 5K 32A |
|
Amb. temperature
|
-25~75°C |
|
Material
|
Housing -SUS304, Float/Guide pipe - SUS316
Indicator housing : SUS304 |
 ■ Specification
- Indication - Individual tank LED indicator
- Tank selector and temp. element selector key are provided.
- Level : 0~39999m/m(ullage or sounding selectable)
- Level status : 2 digital
- Alarm setting and monitoring :
1) 4 level alarms(HH, H, L, LL)for 16tanks.
2) 2 temp. alarms(H, L)for each element of tanks(TU, TM, TL)
2points x 3elements x 16tanks=96points
- Output : RS-232C port for indicator RS-232C port for loading computer 4
points of alarm contact for :
a) common for all temp. alarms
b) common for all level alarms
■ Cargo Monitoring Panel
The cargo monitoring panel will be designed and arranged for level alarm, high
temp. alarm, and temp./level measurement based on the number of tanks and tank
lovation etc.
The cargo tank monitoring panel gives audible and visible alarm as well as
carto tank level, temp. Indication on the minic board, and also external alarm
for high and high-high level shall be provided by cargo monitoring panel.
|
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