Toshiba Electromagnetic Flowmeter Converter TIC-LF232A - Manual (Page 3)

TIC-LF232A
3
Communications signal:
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).
Output display:
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)
“Field re-verification” Mag-Prover – 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.
Vibration resistance:
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