FMC Technologies Smith Meter T-20

Service
Smith Meter
®
PD Rotary Vane Meter
Contents
Section 1 – General Information and Description ....................................................................................Page 2
Description .....................................................................................................................................................Page 2
Suggested Tools and Fixtures ........................................................................................................................Page 2
Disassembly of Model T-11 and I-75 Meters...................................................................................................Page 3
Disassembly of Model T-20, T-40, I-150, SC, SD, SF, and SG Meters ............................................................Page 6
Adjusting Rotor End Clearances ....................................................................................................................Page 9
Section 2 – Clearance Checks ....................................................................................................................Page 12
Blade Tip Toward Housing ..............................................................................................................................Page 13
Rotor to Block .................................................................................................................................................Page 13
Blade Slot .......................................................................................................................................................Page 13
Blade End to Rotor .........................................................................................................................................Page 14
Blade Roller Over Radius Portion of Cam ......................................................................................................Page 14
Section 3 – Meter Repairs ...........................................................................................................................Page 15
Replacing Adjusting Stem Assembly ..............................................................................................................Page 15
Replacing Packing Gland ...............................................................................................................................Page 15
Installing New Rotor .......................................................................................................................................Page 14
Replacing Blade Assembly .............................................................................................................................Page 15
Blade Roller Replacement (T-20, T-40, I-150, SC, SD, SF, and SG Meters Only) ..........................................Page 16
Cam Replacement (T-11 or I-75 Meters Only) ................................................................................................Page 16
Section 4 – Troubleshooting Table .............................................................................................................Page 18
Meter Clearance Record .............................................................................................................................Page 19
Section 5 – Related Publications ...............................................................................................................Page 20
Single-Case Series
Models Included:
T11, I-75
T-20, I-150
T-40
SC-13, SC-13-DI
SD-30, SD-30-DI
SD3-S1
SD3-NF
SF4-NF
SG6-NF
S-Type MetersT-Type Meters
Issue/Rev. 0.5 (6/11) Bulletin MN01029
The Most Trusted Name In Measurement

FMC Technologies Smith Meter T-20 Specifications

General

Model	T-20
Product Type	Turbine Meter
Temperature Range	-40°F to 250°F (-40°C to 121°C)
Output Options	Pulse, 4-20mA
Applications	Crude oil, refined products, LPG
Operating Pressure	Up to 1480 psi (102 bar)

Summary

Section 1 - General Information and Description

Product Description

Overview of the positive displacement rotary vane meter mechanism.

Tools and Fixtures for Meter Service

Lists essential tools and equipment for meter maintenance and repair.

T-11 and I-75 Meter Disassembly

Step-by-step guide for disassembling T-11 and I-75 meter models.

Disassembly of T-20, I-150, SC, SD, SF, SG Meters

Steps for disassembling T-20, I-150, SC, SD, SF, and SG meter models.

Adjusting Rotor End Clearances

Procedure for adjusting rotor end clearances for meter calibration and performance.

Section 2 - Clearance Checks

Blade Tip to Housing Clearance Check

Procedure to check blade tip clearance relative to the meter housing.

Rotor to Block Clearance Check

Method for checking the clearance between the rotor and the block.

Blade Slot Clearance Measurement

Steps for measuring the clearances within the blade slots.

Blade End to Rotor Clearance Check

How to check clearance between the blade end and the rotor.

Blade Roller to Cam Clearance

Procedure for checking blade roller clearance on the cam radius.

Section 3 - Meter Repairs

Replacing Adjusting Stem Assembly

Guide for replacing the meter's adjusting stem assembly.

Packing Gland Replacement Procedure

Instructions for replacing the meter's packing gland.

Installing a New Rotor Assembly

Procedure for installing a new rotor assembly into the meter housing.

Blade Assembly Replacement and Dressing

Steps for replacing the blade assembly, including blade end dressing.

Cam Replacement for T-11 I-75 Meters

Guide for replacing the cam on specific T-11 and I-75 meter models.

Blade Roller Replacement (T-20, I-150, SC, SD, SF, SG Meters)

Instructions for replacing blade rollers on specific meter models.

Section 4 - Troubleshooting Table

Section 5 - Related Publications