General Introduction

Tokyo Keiso TLR7400 level meter is a non-contact type continuous level meter using microwaves. This meter determines the level of a measured object by emitting microwaves and measuring the time taken for the microwaves to travel out, be reflected and return from the object. Since the velocity of electromagnetic waves is hardly affected by temperature and pressure, meters of this type can accurately measure levels under any conditions. Measurements are also independent of the viscosity, or changes in the density and temperature of measured objects, allowing such meters to be used for a wide range of temperatures and pressures. The 2-wire transmission system enables high-accuracy and low-cost level measurement. Inheriting the features of existing microwave level meters, the TLR7400 is even easier to use. And its features list as follows:

-Non-contact, continuous level measurement

-Low total cost achieved by 2-wire system

-Measuring various objects such as liquids and slurries

-Displaying and outputting measurements as level, ullage, volume, and mass

-PTFE drop antennas assuring high corrosion resistance

-PEEK drop antennas operable at up to 200ºC

-Wide operation range: -50ºC to 200ºC and vacuum to 4 MPa

-High-accuracy level measurement independent of changes in temperature, pressure, or density

-Easy mounting on top of tanks

-Simple mounting thanks to the compact housing design

-Quick start with simple parameter setting

-Quick start with interactive parameter setting

-Maintenance-free with no moving parts

2. Short Specifications

Model

TLR7400

Measurable   materials

Liquids, paste and Slurries

Measuring range

Max.100m

Temperature

Process connection: -50 to 200 ºC

Ambient: -40 to 80 ºC

Pressure

0 kPa (abs) to 4.0 MPa

Process connection

Thread: G1-1/2, 1-1/2”NPT male thread

Flange: JIS 10K 40 to 200A

ASME 1-1/2” to 8” 150 lbs,300 lbs

Material

Stainless steel(SUS316L), PTFE, PEEK

Power supply

24V DC

Output type

Level, Distance, Capacity and mass

Antenna type

Metal horn, Drop

3. Basic Code Selection of TLR7400 With Metal Horn Antenna

Main

Code

Suffix Codes

Description

VFDE44W












Always VFDE44W

Approval

0











Standard (Non-ex)

1











ATEX Ⅱ1/2G Ex ia ⅡC T6…T3 Ga/Gb

2











ATEX Ⅱ1/2G Ex db ia ⅡC T6…T3 Ga/Gb

K











IECEx Ex ia ⅡC T6…T3 Ga/Gb

L











IECEx Ex db ia ⅡC T6…T3 Ga/Gb

Fixed code

0










Always 0

Approval 2

0









N/A


3









NACE(MR0175 / MR0103 / ISO15156)

Housing Type/material


2








Compact type   housing(aluminum)

Output



1







Two-wire   system/4-20mA passive(HART)

Process connection




1






1-1/2 inch   flange





2






2 inch flange





3






3, 4 inch flage   (used only for the installation ＇5＇top mount)





9






Special

Cable entry/   cable gland





1





M20×1.5/Without   cable gland






2





M20×1.5/With a   plastic cable gland






3





M20×1.5/With a metal   cable gland






C





1/2 NPT/Without   cable gland

Display






0




Without display   unit







4




With a plug-in   display unit

Display language







0



Without display








1



English








7



Japanese

Fixed code








0


Always 0

Seal material/temperature range









1

FKM/FPW/-40 to   200ºC










2

EPDM/-50 to 150ºC










3

Kalrez6375/-20   to 200ºC

Antenna type










1

DN40 Metal horn   antenna (∅39mm)











2

DN50 Metal horn   antenna (∅43mm)











4

DN80 Metal horn   antenna (∅75mm)











5

DN100 Metal horn   antenna (∅95mm)











6

DN150 Metal horn   antenna (∅140mm)











7

DN200 Metal horn   antenna (∅190mm)

Antenna extension











0

None












1

105mm












2

210mm












3

315mm












4

420mm












5

525mm












6

630mm(only for   metal horn antennas)












7

735mm(only for   metal horn antennas)












8

840mm(only for   metal horn antennas)












A

945mm(only for   metal horn antennas)












B

1050mm(only for   metal horn antennas)

4. Basic Code Selection of TLR7400 With Drop Horn Antenna

Main

Code

Suffix Codes

Description

VFDE44W











Always VFDE44W

Approval

0










Standard (Non-ex)

1










ATEX Ⅱ1/2G Ex ia ⅡC T6…T3 Ga/Gb

2










ATEX Ⅱ1/2G Ex db ia ⅡC T6…T3 Ga/Gb

K










IECEx Ex ia ⅡC T6…T3 Ga/Gb

L










IECEx Ex db ia ⅡC T6…T3 Ga/Gb

Fixed code

0









Always 0

Approval 2

0








N/A


3








NACE(MR0175 / MR0103 / ISO15156)

Housing Type/material


2







Compact type   housing(aluminum)

Output



1






Two-wire   system/4-20mA passive(HART)

Cable entry/   cable gland




1





M20×1.5/Without   cable gland





2





M20×1.5/With a   plastic cable gland





3





M20×1.5/With a metal   cable gland





C





1/2 NPT/Without   cable gland

Display





0




Without display   unit






4




With a plug-in   display unit

Display language






0



Without display







1



English







7



Japanese

Fixed code







0


Always 0

Seal material/temperature range

/pressure range








1

FKM/FPW/-40 to   200ºC/0kpa(abs) to 4Mpa









2

EPDM/-50 to 150ºC/0kpa(abs) to 4Mpa









3

Kalrez6375/-20   to 200ºC/0kpa(abs) to 4Mpa

Antenna type









E

DN80 PTFE Drop   antenna (∅74mm) Max.150ºC










F

DN100 PTFE Drop   antenna (∅94mm) Max.150ºC










G

DN150 PTFE Drop   antenna (∅144mm) Max.150ºC










K

DN80 PTFE Drop   antenna (∅74mm) Max.200ºC

Antenna extension










0

None











1

105mm











2

210mm











3

315mm











4

420mm











5

525mm











D

PTFE flange   plate(only for PTFE drop antennas)