S-177-1(E）
Thank you for choosing OVAL's Flowpet-NX (NX for New Excellent).
All our products are manufactured, tested, and shipped from our factory under rigorous quality control.
This manual is designed to assist the user to obtain the best performace of this product throughout its
service life. In order to take sufficient care, please read this instruction carefully before the use and keep it
handy for quick reference.
1. HANDLING PRECAUTIONS ................................................4
1.1 Confirming the Nameplate ..............................................5
1.2 Transportation Precautions ............................................6
1.3 Storage Precautions ..............................................................7
1.4 Installation Location Precautions.................................8
2. OPERATING CONDITIONS ..................................................9
3. GENERAL DESCRIPTION ......................................................9
3.1 Product Code Explanation ............................................10
3.2 Part Names ...............................................................................11
4. PIPING...................................................................................................12
4.1 Piping Precautions ..............................................................12
4.2 Flushing the Piping Assembly ..................................15
4.3 Lagging Work Precautions ...........................................16
4.4 Examples of Installation..................................................17
4.5 How to Change the Flow Directions ....................19
5. WIRING ................................................................................................20
5.1 Field Wiring .............................................................................20
5.2 Wiring Diagrams ..................................................................21
5.3 Wiring Connections ............................................................23
5.3.1 Terminal Identification .....................................23
5.3.2 Connections to Terminals .................................24
6. OPERATION ................................................................................27
6.1 Note on Operation ............................................................27
7. TROUBLESHOOTING ..........................................................31
8. DISASSEMBLY AND INSPECTION ........................32
8.1 Meter Body Disassembly and Inspection ......32
8.2 Precautions at Assembly ............................................35
9. EXPLODED VIEW AND
SERVICE PARTS LIST .......................36
Exploded View .............................................................................36
Service Parts List .......................................................................37
10. GENERAL SPECIFICATIONS .......................................39
10.1 Flow Range .........................................................................39
10.2 Basic Meter .........................................................................39
10.3 Register, Pulse Generator ........................................40
11. OUTLINE DIMENSIONS ....................................................44
11.1 Flowpet-NX .........................................................................44
11.2 Strainer ...................................................................................45
CONTENTS
