Summary of Contents for Tecfluid VH Series
- Page 1 Instructions manual Series VH Paddle flow switch The art of measuring R-MI-VH Rev.: 1 english version...
- Page 2 PREFACE Thank you for choosing a product from Tecfluid S.A. This instruction manual allows installation, configuration, programming and maintenance. It is recommended to read it before using the equipment. WARNINGS This document shall not be copied or disclosed in whole or in any part by any means, without the written permission of Tecfluid S.A.
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Page 3: Table Of Contents
TABLE OF CONTENTS SERIES VH INTRODUCTION ................WORKING PRINCIPLE ..............MODELS ..................RECEPTION .................. INSTALLATION ................Electrical connection ............MAINTENANCE ................TECHNICAL CHARACTERISTICS ..........SAFETY INSTRUCTIONS ..............Pressure equipment directive ..........Certificate of conformity TR CU (EAC marking) ..... ADDITIONAL INSTRUCTIONS FOR THE ATEX VERSION ....Non-metallic parts .............. -
Page 4: Series Vh
SERIES VH INTRODUCTION The series VH are mechanical flow switches based on the displacement of a paddle by the force of movement of a flowing liquid. This displacement becomes a detection signal. WORKING PRINCIPLE A liquid flows inside a pipe fast enough to move a paddle, which at the same time moves a permanent magnet. -
Page 5: Reception
VH35 Horizontal pipe vertical with upwards flow, with spring VH37 pipe vertical pipe with upwards flow, with magnetic spring VH39 RECEPTION The series VH flow switches are supplied conveniently packaged for their protection during transportation and storage, together with their instructions manual for installation and operation. -
Page 6: Electrical Connection
Electrical connection For the electrical installation it is recommended to use multiple conductor cables, and not single cables, in order to guarantee the cable gland will stay watertight. The connector has a PG9 cable gland for cables with outer diameters between 4.5 mm and 7 mm. The numbering of the terminals is the following: In the female connector: Terminal 1:... -
Page 7: Maintenance
The electrical installation should provide a fuse or circuit breaker to protect the reed switch from overloads. When installing the connector, make sure that the cable gland (A) closes over the cable and that the connector (B) with the rubber seal (C) is well screwed down to maintain the IP65 rating. MAINTENANCE No special maintenance is required. -
Page 8: Safety Instructions
SAFETY INSTRUCTIONS The series VH flowmeters are in conformity with all essential requirements of all EC directives applicable to them: 2014/68/EU Pressure equipment directive (PED) 2014/30/EU Electromagnetic compatibility directive (EMC) 2012/19/EU Waste electric and electronic equipment (WEEE). 2011/65/EU Restriction certain hazardous substances in electrical and electronic equipment (ROHS). -
Page 9: Switching Flow Rates
SWITCHING FLOW RATES Switching flow rate (mm) (inches) (mm) 1 ¼“ 1 ½“ 2“ 2 ½” 3” 4” 5” 6” 8” 10” 12” 14” 16” 18” 20” Approximate flow rate L: Paddle length... -
Page 10: Dimensions
DIMENSIONS Model VH35 AISI 316L (dimensions in mm) - Page 11 Model VH35 PTFE (dimensions in mm)
- Page 12 WARRANTY Tecfluid S.A. guarantee all the products for a period of 24 months from their sale, against all faulty materials, manufacturing or performance. This warranty does not cover failures which might be imputed to misuse, use in an application different to that specified in the order, the result of service or modification carried out by personnel not authorized by Tecfluid S.A., wrong handling or accident.