Toshiba Oxygen Equipment LF620F User Manual

TIC-LF654L 

4 

Full dot-matrix 128×128 dot LCD display 
(back–light provided) 
A parameter change will rotate the display. 

Parameter settings — Parameters can be set as 

follows: 

• IR Switches: Three key switches are provided 

to set configuration parameters.  

• Digital communication: HART, PROFIBUS 

or Modbus is needed to set parameters. 

• Zero adjustment: Zero point adjustment can 

be started by pressing the switch in the 
converter. 

• Damping: 0.1 to 60 seconds (selectable in one 

second increments) 

– Toshiba’s 

Zero span calibration tool allows unit to be 
re-calibrated and verified using an internal software 
program (For more information contact Toshiba 
International Corp.) 

Parameter setting values are stored in non–volatile 
memory and the values will be restored when the 
power returns to normal condition. The outputs and 
display will remain as follows when power fails.  

• Current output:  0mAdc 
• Digital output:   OFF 
• LCD display:   No display 
• HART:  

No communication 

• PROFIBUS:   No communication 
• Modbus:  

No communication 

One of the following can be selected: 

• 100 to 240Vac, 50/60Hz  

(allowable voltage 80 to 264Vac) 
110Vdc 
(allowable voltage 90 to 130Vdc) 

• 24Vdc (allowable voltage 18 to 36Vdc) 
 
 

Arresters are installed in the power supply and a  
current signal output circuit to help protect the meter 
from lightning and improve personnel safety. 

Case: Aluminum alloy (equal to IP 67) 

Acrylic resin-baked coating, pearl–gray colored 

Cable glands —  

LF620 and LF622 without cFMus Approval: 

Provided as standard, outer diameter of cableφ
11~13mm 
Material Nylon 66 
G (PF) 1/2 male threads. 

LF620F and LF622F with cFMus Approval: 

Not provided, 1/2–14NPT male threads are 
required.  

Applicable diameter —  

0.433 to 0.512 inch (11 to 13mm) 

Note: When PROFIBUS option is specified, cable gland size is 

φ

6∼8mm for signal cable, φ11∼13mm for power 

cable 

No resonance to the following levels of vibration:  

• 10 to 150Hz with acceleration of 9.8m/s

2

 

• Vibration of 30Hz with 29.4 m/s

2 

in 4h in each 

direction will not cause any defect to unit. 

Note:  Avoid using the flowmeter in an environment with 

constant vibration. 

See Figure 7 (for Separate type) 

Converter: 220,000 hours (25 years) at 77 °F (25 °C) 

based on strict military specification 
MIL-HDBK-217F 

Detector: 350,000 hours (40 years) at 77 °F (25 °C) 

based on strict military specification 
MIL-HDBK-217F