Sitron SLU Скачать руководство пользователя страница 4

Fig. 2: Level meter dead zone

m – Dead zone 
(blind zone, blocking distance) 

-

Fig. 3: Installation distance from the tank wall

SLU–02 ; 10

d > 1/12 c  
(min. 200 mm)

SLU–06

d > 1/8 c 
(min. 200 mm)

SLU–20

d > 1/10 c
(min. 200 mm)

Fig. 4: Possible installation of the installation neck

a  –  Neck height
b  –  Neck width
m – Dead zone (blind zone, blocking dist.)

SLU–02 ; 06

a < 3 b
b > 100 mm

SLU–10

a < 1.5 b
b > 100 mm 

SLU–20

a < 1.5 b
b > 150 mm

d – Distance from
      the tank wall 

c – Maximum reach  
     of the level meter

4

Installation Instructions

Install the level meter in the vertical position into the upper lid of the tank or vessel or 
reservoir using a the threaded connection, a fastening nut or a flange so that the level 
meter axis is perpendicular to the surface level of the measured liquid( Fig.1)

The min. dimensional parameters to install the level meter in to a lid or a celling of tank are 
givening (Fig.3)

When installing in an open channel (reservoir, drain etc.) install the level meter on to a 
bracket as close as possible to the expected max. level.

Each measuring range of SLU models has a specified ‘‘dead zone’.   This means that 
within the first 10 to 50 centimers (depending on the model) below the transmitter, no 
signal reflected in this area can be evaluated. The dead zone (Fig.2) determines the min. 
distance  possible  between  the  level  meter  and  the  highest  surface  level.  The  min. 
distances to the medium are given in the chapter ‘Specifications’.

It is necessary to install the level meter so that the target level will not interfere with the 
dead zone when filled up to the maximum level. If the measured level interferes with the 
dead zone, the level meter will not work supply the correct output signal.

Fig.1 Recomended installation
         in the tank

d – Distance from
      the tank wall 

c – Maximum reach  
     of the level meter

If the maximum surface level in the tank interferes with the dead zone, the level mater has to be mounted higher within a 
neck extention to the tank.  In this way, the tank can be filled to the maximum volume. The inner neck surface has to be 
even and smooth (without edges and welded points) the inner edge should be rounded where the ultrasonic wave 
eminates from the pipe. The neck diameter should be as large as possible but the neck height should be as low as 
possible,  minimizing  the  extra  distance  between  the  medium  and  the  sensor.    Recommended  dimensions  of  the 
extended neck are given in (Fig.4).

Installation Manual

Содержание SLU

Страница 1: ...ghly recommended that the user carefully read all of the instructions in this manual before installation or use of the level meter for the first time Keep the manual in a safe place The manufacturer reserves the right to implement changes without prior notice ...

Страница 2: ...ics that also performs temperature compensation and subsequently are converted to an output current 4 20mAwith HARTprotocol or output RS 485 Modbus and the measured value is displayed on the display The central processor evaluates and blocks out interfering signals performs temperature compensation compares the cleaned received signal with the false reflection map e g from mixers ladders reinforcem...

Страница 3: ...nsional Drawings Variant SLU with protective cable shield Al alloy DN100 Pg11 cable gland ground terminal Flange for type 20 according to standard DIN 2527 PN10 SLU02 SLU06 SLU10 SLU20 50 Installation Manual ...

Страница 4: ...t 10 to 50 centimers depending on the model below the transmitter no signal reflected in this area can be evaluated The dead zone Fig 2 determines the min distance possible between the level meter and the highest surface level The min distances to the medium are given in the chapter Specifications It is necessary to install the level meter so that the target level will not interfere with the dead zo...

Страница 5: ...ot install the level meter directly in or above the filling point Fig 7 When measuring the level of bulk solids the measurement range is reduced due to absorption of ultrasonic waves by the bulk medium shortening the measuring range by up to 50 depending on the grain material and size We therefore recommend selecting a level meter with greater range than the maximum measuring range for the applicat...

Страница 6: ...stirred or rippled by a mixer coming liquid etc It can result in reduction of the measurement range or unreliable function of the level meter Fig 10 Rotating mixer blades will cause surface agitation which may result in false reflections of the ultrasonic signal from the surface level and unreliable operation of the level meter Fig 13 obr 11 For a rippled or swirling level you can use the direction...

Страница 7: ... 13 It is suitable to run the cable under a cable bushing obliquely down in slack according to Fig 14 to prevent penetration of humidity into the housing In this way rain and condensing water can flow off freely The cable bushing and connector have to be sufficiently tightened to prevent penetration of humidity To lower the minimum distance to the measured medium a reflection board made from solid ev...

Страница 8: ...mmended the use of shielded cables Inside view of screw terminals of the level meter with Modbus SLU 02 06 10 20 M Procedure to connect the cable to the level meter 1 Unscrew the housing cover lid 2 Using your finger tips or finger nails gently remove display by clutching the upper edge of the display module 3 If you cannot grasp the module you can use a small screwdriver Insert it as far as the sea...

Страница 9: ...e with other standards relating to the area concerned The supply voltage source should be preferably realized as a stabilized power supply unit with safe voltage from 18 to 36 V DC 18 30 V DC for Xi version which may be part of the evaluation or display device In case of strong electromagnetic interference EMI parallel cable ducting with power lines or when cable length exceeds 30 m we recommend t...

Страница 10: ...0 Controller SLU C X Explosive area Non explosive area Electrical connection for level meter in Classified Area 4 20mA Galvanic separation of current signal from transducer in explosive area Installation Manual ...

Страница 11: ...11 Set up elements Status Signalization Installation Manual ...

Страница 12: ...e to be respected for each transmitter model eg SLU 02 measures up to 2 meters SLU06 measures up to 6 meters SLU10 measures up to 10 meters SLU20 measures up to 20 meters 3 Measuring range Measuring range to be set on the transmitter in the parameters MIN LEVEL 0 and MAX LEVEL 100 with reference to the face of the transducer and DISPLAY parameters by entering the value of the process that you want...

Страница 13: ...13 Basic configuration Operation and Setting Sitron Installation Manual ...

Страница 14: ...14 Installation Manual ...

Страница 15: ...15 Installation Manual ...

Страница 16: ...16 Service settings Installation Manual TICS the measuring accuracy will be reduced by around 1 of the set range If perature in the place of installation of the SLU see mode DIAGNOSTICS it is ad ...

Страница 17: ...17 This item is part of a menu with Modbus output level meter SLU M Modbus mode is intended for the settings of the level Modbus addresses baud rate and parity settings Installation Manual ...

Страница 18: ...18 Additional functions Installation Manual of level meter SLU body configuration into the display module and back ...

Страница 19: ...d only with the same type of level meter e g SLU 02 with SLU02 SLU 06 with SLU06 and with the firmware version 2 0 and later The data set is not stored into the display module The transfer can not be done its necessary to repeat the procedure of the copying the settings in the mode CLONE SETTINGS ...

Страница 20: ...20 Protocol HART SLU Protocol Modbus SLU M SMC 485 Installation Manual SLU XX SLU ...

Страница 21: ...ot require any personnel for its operation It is used to inform the technological entity operating personnel on the measured substance level height during the operation Maintenance of this equipment consists in verification of the integrity of the level meter and of the supply cable Depending on the character of the substance measured we recommend to verify at least once per year the clarity of the...

Страница 22: ...22 Installation Manual SLU XX SLU Menu Structure ...

Страница 23: ...r Aluminium alloy flange Recommended cable SLU 02 06 10 20 C SLU 02 06 10 20 M Maximal resistance of current output load U 24 V DC U 22 V DC U 20 V DC Rmax 270 Ω2 Rmax 180Ω Rmax 90 Ω Weight SLU02 SLU06 SLU10 SLU20 0 3 kg 0 4 kg 0 7 kg 3 1 kg 1 In case the level of bulk solid materials is measured the measurement range is reduced 2 Including 250R resistor in case of HART connection Display type Matr...

Страница 24: ...l Size 5 1 6 1 1 2 Performance N General Area Use X Ex Proof For Explosive Areas Process Connection Type B Thread F Flange Output C 4 20mA with HART M RS 485 Modbus RTU Accessories None H Horn Adaptador SLU 02 SLU 06 SLU 10 SLU 20 Electrical connection B Short Cable Conduit H Cable Gland w Protective Hose Set Up via D Digital Display L No Display Metal Lid 7 5 2 1 4 Q 4 X Other specify Maximum rea...

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