Toshiba TIC-LF232A specifications Wiring Precautions, About establishment environment

TIC-LF232A

Wiring Precautions

(1)Be sure to use thick walled steel conduit (22mm) for signal and excitation cable wiring between the detector and converter. Use flexible conduit at the cable outlets of the detector and converter.

(2)Connect the grounding wire (IV wire 5.5mm² or more) to a good earth ground (100Ω or less ground resistance). Make the wire as short as possible. Do not use a common ground shared with other equipment where earth current may flow. An independent earth ground is recommended.

(3)The allowable cable lengths between the detector and converter for the separate type flowmeter depend on the electrical conductivity of the object fluid. See Figure 4 below.

(4)Digital output 1, digital output 2 to 4 , digital output 1 to 2 are insulated mutually.

	300
	200
	100
ケ
(m)
ー	50
ブ
ル
length許	30			①			②
容	20
長
cableさ	10
〔m〕
Allowable	5
	3
	3	5	10	20	30	50	100	200
		Conductivity導電率〔μ(µS/cm)〕
① LF130形、LF131形、				形検出器と接続の場合
(1)When combined withLF150.
② LF470形検出器と接続の場合
(2)When combined with LF470.

Figure 4. Electrical Conductivity and Cable length

About establishment environment

Do not store or install the flowmeter:

•Where there is direct sunlight.

•Where excessive vibration or mechanical shock occurs.

•Where high temperature or high humidity conditions exist.

•Places where corrosive atmospheres exist.

•Places submerged under water.

•Place where there is sloped floor. To put the flowmeter temporarily on the floor, place it carefully with something, such as stopper, to support it so that the flowmeter will not topple over.

In areas like the following, there may be the case that infrared switches do not function correctly. (If these are unavoidable, use an appropriate cover.)

(1)Where unit (operation panel) is exposed to direct sunlight, reflection of light onto window pane and diffused light reflection.

(2)Where smoke and steam may occur.

(3)Where exposed to direct snow, ice or mud.

Ordering Information

1.When ordering the LF232 converter, refer to Tables 1 (Type Specification Code).

An entry must be made for each of the columns in each of these tables.

2.Measuring range

3.I/O function specifications.

4.Ordering scope:

Actual flow calibration data: (required or not)

5.Specification of combined detector

6.Other scope:

Specification other than standard items.

Consult a Toshiba representative before ordering.

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