مقاييس التدفق متغيرة المساحة المعتمدة على الهدف (TVA)

Sizes and pipe connection

Technical data

DN50, DN80 and DN100

IP rating

IP65 with correct cable glands

The TVA flowmeter is of wafer design, suitable for fitting between the following flanges:

Power supply

Loop powered

EN 1092 PN16, PN25 and PN40

with optional RS485: 24VDC

BS 10 Table H

ASME B 16.5 Class 150 and Class 300

Outputs

4-20mA (not available with RS485 option)

Japanese Industrial Standard JIS 20

Pulsed output (Vmax 28 Vdc Rmin 10 kW)

Korean Standard KS 20

Communication port

Modbus EIA 232C (RS 232C)

Note: Spirax Sarco TVA flowmeters should be installed in pipework manufactured to BS 1600, ASME B 36.10 Schedule 40 or EN 10216-2 / EN 10216-5 equivalent. For systems with different standards / schedules, please contact Spirax Sarco.

with optional RS485: EIA 485 (RS 485C)

Materials

Unit

Part

Material

TVA

Flowmeter body

Stainless steel S.316 1.4408 CF8M

Internals

431 S29 / S303 / S304 / S316

Spring

Inconel X750 or equivalent

Flowmeter stem

Stainless steel 300 series

Electronics housing

Aluminium LM25

Pressure sensing kit

Cable

Polyvinyl chloride (PVC)

Sensor housing

AISI 304 Stainless steel 1.4301

Sensor

AISI 630 Stainless steel 1.4542

O' ring

Nitrile Butadiene Rubber (NBR)

Adaptor

AISI 431 Stainless steel 1.4057

High pressure syphon tube assembly

Tube

Carbon steel BS 3602: Part.1 1987 CFS 360 (zinc plated / passivated)

Valve

Body

Carbon steel

Seat

PEEK/ Polymain