Toshiba TIC-LF232A Manual De Usuario

 

 

3

A digital communications (HART protocol) signal is 
superimposed on 4 to 20 mA dc analog output 
signal. 

Load resistance:  240 

Ω to 1 kΩ 

Load capacitance: 0.25 µF or less 
Load inductance: 4mH or less 

(For maximum cable length, about 2km is a 
guideline length when CVV-S 1.25mm

2

 is used 

under standard installation condition.) 

Note: HART (Highway Addressable Remote 
Trans-ducer) is a communications protocol for 
industrial sensors recommended by the HCF (HART 
Commu-nication Foundation).

 

16-character×2-line dot-matrix LCD 
(With back light). 

2 units can be selected from the flowing units: flow 

velocity, instantaneous flow rate, total flow 
(forward/reverse/difference flow), total count, %, 
custom unit. 

Parameter settings—Parameters can be set as follows 

•IR Switches: Various parameters can be set without 

opening the converter housing using 4 infrared 
switches (password can be set) 

•Zero adjustment: Zero point adjustment can be 

started by pressing the switch in the converter. 

•Digital communication: The AF 900 hand-held 

terminal is needed to set parameters. 

•Damping: 0.5 to 60 s (selectable in 1s increments) 

 – Toshiba’s 

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

Conditions when power fails: 

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

Current output: 0 mA  
Digital output: OFF (contact open) 

LCD display   : No display 

Surge protection: Surge protectors are installed in the 

power supply, excitation circuit, current signal 
output and digital I/O circuit. 

Terminal block structure: 21-pole, screw connection 

type (M4 screw) 

Housing: Aluminum alloy 
Coating: Acrylic resin-baked coating, pearl-gray 

colored 

Cable connection ports : 

A cable gland is provided for each port. 

OD of cable φ11 to 13 mm 
Material Nylon 66 
G (PF) 1/2 male screws. 

No resonance to the following levels of vibration: 

• 10 to 55Hz with amplitude of 0.07mm 
• Vibration of 30Hz with 29.4 m/s

2 

in 4h in each 

direction will not cause any defect to unit. 

Note: If the flowmeter is intended to be used in a 

location where vibration is applied 

constantly contact Toshiba. 

Dimension and Weights:  

   See Figure 2