Toshiba LF410/LF602 사용자 설명서

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Fluid conductivity: 5µS/cm minimum 
Fluid temperature:  

–10 to +180

°C : Ceramic type   

(14 to 356 

°F)  

Note : 120

°C (248°F) above is separate type 

–10 to +120

°C : tefolon PFA 

(14 to 248

°F) 

Ambient temperature:  

Without cFMus Approval: 

-20  to  + 60 °C (-4 to 140 °F) 

With cFMus Approval: 

-10 to  +45°C (14 to 113 °F) 

Structure: NEMA 4X (IP 67) Watertight 
Power consumption:  

17W(27VA) or less 
19W(29VA) or less (with PROFIBUS) 

EMC directive 89/336/EEC 

The low voltage 93/68/EEC 

PED 97/23/EC (Note 1) 

Note : See table 2 for detail.

 

Model: LF414/LF600 and LF414/LF602 

cFMus explosion proof: 

FM Class I, Division 2, Groups A,B,C, and D. 

FM Class II, Division 2, Groups E, F and G. 

FM Class III. 

LF410/LF600: Combined type for standard 

specification. 

LF410/LF602: Separate type for standard 

specification. 

LF414/LF600: Combined type with Ex approval 

of Class I, Division 2 (cFMus). 

LF414/LF602: Separate type with Ex approval  

of Class I, Division 2 (cFMus). 

 

 Model LF410 and LF414 Detectors 

Mounting style: Wafer type 
Fluid pressure: -0.1 to 2.0MPa  

(-15 to 300psi, or -1.0 to 20 bar) 

Note: The test pressure before shipping from the factory 

is equal to twice the nominal pressure rating of the 

customer specified flange connection during 15 

minutes. 

Connection flange standards: ANSI 150, ANSI 

300, BS10 and 16, DIN PN10 and PN16, JIS10K, 

JIS16K and JIS20K 

Case — 25 to 100mm (1” to 4”): stainless steel 15, 

150, and 200mm (1/2”, 6”, and 8”): carbon 

steel 

Linings — 15 to 100mm (1/2” to 4”): Ceramic 

tube (std.) & teflon PFA (opt.) 

150 and 200mm (6” to 8”): teflon PFA 

Electrodes — 316L stainless steel (std.) 
Grounding rings — 316 stainless steel (std.) 

Note:  See Table 3 for optional materials and other 

related information. 

Measuring tube material — 304 stainless steel 

(in case of Teflon PFA lining) 

Coating — 25 to 100mm (1” to 4”): no coating 

(stainless steel body). 

15, 150, and 200mm (1/2”, 6”, and 8”): 

phthalic acid resin coating with pearl-gray 

colored. 

Heat shock resistance : for a ceramic tube detector 

ΔT ≤ 150 

°

C/0.5sec (302

°

F/0.5sec) 

ΔT ≤ 100 

°

C/0.5sec (212

°

F/0.5sec) 

Note:   The above means that the ceramic tube detector 

withstands the shock of sudden heating 

(temperature difference 150

°C or less per 

0.5seconds) and sudden cooling (temperature 

difference 100

°C or less per 0.5seconds). 

Dimensions and weights: See Figures 3 to 8. 
Cable connection port: for separate type detectors. 

Cable glands — 

LF410:  without cFMus approval 

Provided as standard 
R(PT) 1/2 male screws. 

LF414:  with cFMus approval 

Not provided 
3/4-14NPT male screws are required. 

Applicable diameter — 11 to 13mm  

(0.433 to 0.512 inch) 

 

 Model LF600 and LF602 converters 

Analog signal — the voltage signal from detector, 

proportional to process flow rate (for LF602 

separate type converter). 

Signal type: 20 to 30Vdc voltage signal 

Input resistance: 2.7k

Ω 

Number of inputs: one point 

DI function — One of the following functions can 

be assigned to the optional DI signal. 

Range switching — Selects either the higher or 

lower range in the unidirectional or 

bidirectional 2-range setting. 

Totalizer control — Starts and stops the built-in