R-700 Series Glass tube flowmeter with alarm contact

TG-F2373-E01

4

ALARM CONTACTS

Reed switch type (R-75

□)

●

Type of switch

: Self holding type.

Normal open or Normal close

●

Capacity

: AC.DC,10W(Resistance load)

Max.voltage AC 120V, DC 170V

Max.Current AC 0.25A, DC 0.25A

●

Setting Accuracy

: ± 2% F.S. (Against flow calibration)

●

Reset span

:

≦15% F.S. (R-75

□, R-75□-R)

≦20% F.S. (R-75

□-E)

(Against flow calibration)

●

Enclosure

: Splash-proof

Optical switch type (R-76

□)

●

Output

: Open collector (NPN)

●

Output rating

: Max. sink current 80 mA (30V DC)

●

Operation

: Dark ON (Open collector ON when light is

shielded)

●

Response time

: 0.5 msec or less

●

Power supply

: 24V DC ± 10% (Power ripple : max. 10%)

●

Power consumption : Projector 15 mA or less

Receiver 22 mA or less

●

Photosensitivity adjustment

: Included

●

Operation display

: Operation indication (Red LED)

Stability indication (Green LED)

●

Connection

: Cable pullout type (Cable outer diameter

ø2.8 mm)

Cables

Projector 0.15 mm2 two-core cable, 2 m (Gray)

Receiver 0.15 mm2 three-core cable, 2 m (Black)

●

Structure

: Waterproof hermetic (Equivalent to IP64)

●

Material

: Case (Liquid crystal polyester/Polypropyl-

ene filler)

●

Ambient illuminance : 3,000 lux or less

●

Ambient temperature : −25 to +55ºC (No freezing)

●

Ambient humidity

: 85%RH or less (No condensation)

Model

Q'ty

Fluid name

Density

Viscosity

Pressure

Temperature

Scale range

Alarm setting point

Action

Material

Special

instruction

LO__________

HI__________

LO

Open

Close for decrease

HI

Open

Close for increase

Body

____________

Float

____________

Gasket

____________

ORDERING INFORMATION

Avoid the use of glass tube variable area flowmeters for the following

services.

1. Liquid services subject to impulse pressure in the process.

2. Secondary accidents might occur due to the breakage of glass in

such services :

•Toxic fluids such as poisons, stimulant and narcotics

•Flammable fluids

•Explosive fluids

3. Gas handling process where breakage of glass might result in gas

leakage or scattering of glass fragments.

4. The installation places of the flowmeters where breakage of glass

might be caused by the accidents from the surrounding piping or

equipment.

5. On-off operation where breakage of glass might be caused by the

collision of the float inside meter due to the abrupt change of flow.

6. Services where the heat shock by abrupt change of temperature is

expected.

CAUTION

Cautions on the use of glass tube variable area flowmeters

Head Ofce : Shiba Toho Building, 1 – 7 – 24 Shibakoen, Minato-ku, Tokyo 105 – 8558

Tel : +81-3 – 3431 – 1625 (KEY) ; Fax : +81-3 – 3433 – 4922

e-mail : overseas.sales@tokyokeiso.co.jp ; URL : https://www.tokyokeiso.co.jp

* Specication is subject to change without notice.