background image

7

Fig. 3-1. External dimensions for solid type 

Refer to external dimensions for measurement reference point. 
Basically upper part of mounting compartment is measurement reference point. 

    ※

Protection grade

 IP20 is applied to the structure from the antenna mounting 

screw hole face to the   

              antenna side. 

When the closing plug mounted on the purge hole is removed and the 

air pipe

 is mounted, 

protection 

  grade

 IP20 is applied to the structure from the purge hole to 

the antenna side. 

2

0

(

10

4

)

(82) 

(2

55

)

2

00

( 58) 

Transparent window: PC

Earth terminal

M4

Lead outlet G1/2 
Cable  8

12mm

G1 1/2

Purge hole 
G1/8 

Boss 

SUS304 

Antenna: 
SUS316L 

Housing/Cover: ADC 

(2

8)

(1

4)

1

0

(1

92

)

(2

06

)

Max.10°

Max.10°

JIS5K65A 

SUS304

PCD17

210 

PCD130 

155 

8- 19   
Mounting hole 

4- 15 
Mounting 
hole 

Protection

IP67 

Code

MWLM-PR26H3 

series

Measurement 
reference point 

JIS10K100A 
flange with 
Swivelling 
mechanism
SUS304 

Hex-head 
opposite side 
50 

Protection

IP20 

Summary of Contents for MWLM-PR26HEx

Page 1: ...g 16 INSTRUCTION MANUAL FOR MICROWAVE LEVEL METER TYPE MWLM PR26HEx Code Liquid MWLM PR26H2G F Ex Powder MWLM PR26H3G F S SP Ex MWLM PR26H7G F S SP Ex The operator should read this Instruction Manual carefully and handle the device correctly 1 8 18 Norimatsu Higashi Yahatanishi ku Kitakyushu 807 0837 Japan Phone No 8193 691 3731 Fax No 8193 691 3735 http www matsushima m tech com E mail sales mats...

Page 2: ...for any purpose other than the original purpose of use Be sure to confirm the specification of equipment and use the equipment within the range of specification Mounting conditions such as temperature power source frequency etc Make sure a correct wiring before applying power source Do not have a shock or strong impact to the equipment Failure to observe this CAUTION may result in equipment damage...

Page 3: ...ment Current 86 8mA Equipment Power 551mW Internal inductance 0 7mH Internal capacitance 5nF Division of the danger point Housing Zone1 Zone2 Other than a housing Zone0 Zone1 Zone2 Power Supply 1 DC24V Please supply from safety barrier KFD2 STC4 Ex1 Power consumption Max 540mW Antenna Horn L150mm Mounting 2 G1 1 2 thread JIS5K50A flange Dead Zone 0 5m below the antenna Max Measurable Distance 3 20...

Page 4: ...using ADC Boss SUS304 Antenna SUS316L Protection 5 IP67 Housing Lead outlet 1 G1 2 Applicable size 8 12mm Output signal DC4 to 20mA 1 Resistive load Max 499 Mass G app 2 7kg F app 5 3kg S app 6 0kg SP app 9 0kg Accessories option Data communication cable MHM 01 PC Adjustment software MDTM 1 Power supply ripple voltage must be less than 0 2Vp p Noise and surges should not be interfered Recommended ...

Page 5: ... WARNING Do not connect the Data communication cable to the Adjustment communication check pin at a dangerous place Failure to observe this WARNING may result in an explosion because it is not explosion proof circuit Ammet AC DC Converter DC24V power AC power D class grounding Fig 1 System configuration example HART modem Adjustment PC Level Meter Balanced type Shielded wire Hazardous area A non h...

Page 6: ...n intrinsic safety circuit must be less than 551mW 2 Performance sorting and group of electric apparatus Performance sorting ia Group of electric apparatus ⅡB ⅡC 3 Relation of permissible inductance Lo of an intrinsic safety circuit and permissible capacitance Co of an intrinsic safety circuit to inductance Lw and capacitance Cw of external wiring of an intrinsic safety circuit Permissible inducta...

Page 7: ...a side When the closing plug mounted on the purge hole is removed and the air pipe is mounted protection grade IP20 is applied to the structure from the purge hole to the antenna side 20 104 82 255 150 45 Transparent window PC Earth terminal M4 Lead outlet G1 2 Cable 8 12mm G1 1 2 Purge hole G1 8 Hex head opposite side 50 BOSS SUS304 Antenna SUS316L Housing Cover ADC Measurement reference point 14...

Page 8: ...oved and the air pipe is mounted protection grade IP20 is applied to the structure from the purge hole to the antenna side 20 104 82 255 200 58 Transparent window PC Earth terminal M4 Lead outlet G1 2 Cable 8 12mm G1 1 2 Purge hole G1 8 Boss SUS304 Antenna SUS316L Housing Cover ADC 28 14 10 192 206 Max 10 Max 10 JIS5K65A SUS304 PCD17 210 PCD130 155 8 19 Mounting hole 4 15 Mounting hole Protection ...

Page 9: ...ed and the air pipe is mounted protection grade IP20 is applied to the structure from the purge hole to the antenna side 20 104 82 255 441 98 Transparent window PC Earth terminal M4 Lead outlet G1 2 Cable 8 12mm G1 1 2 Purge hole G1 8 Boss SUS304 Antenna SUS316L Housing Cover ADC 28 10 10 433 451 Max 10 Max 10 JIS10K100A SUS304 PCD17 5 210 PCD175 210 8 19 Mounting hole 8 19 Mounting hole Code MWLM...

Page 10: ...de When the closing plug mounted on the purge hole is removed and the air pipe is mounted protection grade IP20 is applied to the structure from the purge hole to the antenna side Fig 3 Division of the dangerous spot and temperature range Division of the dangerous spot Zone0 Zone1 Zone2 Division of the dangerous spot Zone1 Zone2 Ambient temp 20 50 Measured fluid temp 40 100 Protection IP67 Protect...

Page 11: ...cone shape stand and ensure radiation angle including the side beam Keep radiation free of interference from the stand pipe Recommended height of stand pipe Solid The end of the horn antenna must be protruded a minimum of 10mm from the stand pipe Liquid The end of the antenna must be protruded a minimum of 25mm from the stand pipe Calculation of radiation angle expansion Solid Distance from meas r...

Page 12: ... may increase or the noise reflection may reduce Turn and adjust it to the direction where the reflection wave is the largest and the noise reflection is the least checking the reflective condition 6 4 Installation precautions Set the value of 100 20mA level so that the blind sector is secured Setting the 100 20mA level within the blind sector will cause a malfunction of the instrument Avoid too l...

Page 13: ...er the level meter s installed position must be changed if true echoes cannot be received or if the reflection level measured in dB is extremely low When there are obstructions such as crossbeams pipes or level switches in the tank install the level meter in a position where there is no obstruction within its radiation angle Important It is not possible to specify the range of false reflections in...

Page 14: ... than the attaching portion when the horn antenna is detached by maintenance etc Please do not put the cone antenna part doing below after detaching the horn antenna The cone antenna might be damaged and it influence the measurement Simple cover Fig 10 Installation precaution 4 Cone antenna Horn antenna Mounting part It goes out Fig11 The horn antenna was detached ...

Page 15: ...AWG22 to 16 Warning Do wiring when the instrument is powered OFF Avoid short circuit and reverse polarity The instrument must be supplied with DC power supply do not apply different voltage Tighten the cover and lead outlet firmly after wiring completed Warning Do not connect the Data communication cable to the Adjustment communication check pin at a dangerous place HART check pin Use a wire more ...

Page 16: ...ady to start level measurement OK OK OK Y N Y N Y 70m 0m Reflection dB 100 20mA 0 4mA Reflection echo Fig 16 Measurement range LCD adj unit Software for PC adjustment and HART modem are optional products For the error code details please refer to Instruction manual for LCD adjustment unit and Operating manual for adjustment software Matsushima DTM Power supply confirmation N ...

Page 17: ...ers depending on measurement condition and measuring material No Problem Check the following Corrective actions 1 Powered ON the device but screen is blank Are wiring connections correct Check whether the power is supplied to the device Correct the wiring Supply power to the device 2 Measured level reading higher than material level Are there any obstructions between antenna and material surface t...

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