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Multi-Trak™ 

 

Model 670S Multi-Point Mass Flow Meter System 

 

INSTRUCTION MANUAL 

IM-Multipoint 

Revision: B, April 2015 

 
 
 
 
 
 
 
 
 

 

CORPORATE HEADQUARTERS 

5 Harris Court, Building L Monterey, CA 93940 

Phone (831) 373-0200 (800) 866-0200 Fax (831) 373-4402 

www.sierrainstruments.com 

 
 

EUROPE HEADQUARTERS 

Bijlmansweid 2 1934RE Egmond aan den Hoef 

The Netherlands 

Phone +31 72 5071400 Fax +31 72 5071401 

 
 

ASIA HEADQUARTERS 

Rm. 618, Tomson Centre, Bldg A, 188 Zhang Yang Road 

Pu Dong New District, Shanghai, P.R.China 

Phone: + 8621 5879 8521 Fax: +8621 5879 8586

 

 

 

 

 
 

 

Summary of Contents for Multi-Trak 670S

Page 1: ...g L Monterey CA 93940 Phone 831 373 0200 800 866 0200 Fax 831 373 4402 www sierrainstruments com EUROPE HEADQUARTERS Bijlmansweid 2 1934RE Egmond aan den Hoef The Netherlands Phone 31 72 5071400 Fax 31 72 5071401 ASIA HEADQUARTERS Rm 618 Tomson Centre Bldg A 188 Zhang Yang Road Pu Dong New District Shanghai P R China Phone 8621 5879 8521 Fax 8621 5879 8586 ...

Page 2: ...r oxygen flow application COPYRIGHT Sierra Instruments TRADEMARKS No part of this publication may be copied or distributed transmitted transcribed stored in a retrieval system or translated into any human or computer language in any form or by any means electronic mechanical manual or otherwise or disclosed to third parties without the express written permission of Sierra Instruments The informati...

Page 3: ...2 INTRODUCTION TO THE MULTIPOINT 7 CHAPTER 3 INSTALLATION 8 Installation Guide 9 Connecting Modbus Communication to Individual Model 640S Meters 9 Installation Daisy Chaining the Units Together 10 Installation Installing Into Duct Or Pipe 11 Installation Depth Of The 640S In The Duct 11 CHAPTER 4 SETTING UP THE MENU 12 Advanced Menu 15 CHAPTER 5 TECHNICAL SUPPORT SERVICE 17 Technical Support 17 AP...

Page 4: ... based Human Machine Interface HMI controls all functions of the Multi Trak system The HMI is used to collect visualize and store flow data as well as set up the individual sensor points thus allowing the entire system to be easily configured in the field The Model 670S HMI integrates the functions of flow measurement flow range adjustment field validation and diagnostics and displays mass flow ra...

Page 5: ...t a report to the factory or distributor Remove the packing slip and check that all ordered components are present and match your specifications as ordered Do not return any equipment to the factory without first contacting Technical Support Center Warning Caution This statement appears with information that is important to protect people and equipment from damage Pay very close attention to all w...

Page 6: ...re used frequently in this manual They are presented here with their definitions for your information FFS Factory full scale of the 640S meter UFS User full scale of the 640S meter HMI Human machine interface Note It is recommended to you read Sierra Steel Mass Model 640S Insertion Mass Flow Meter Instruction Manual ...

Page 7: ...Trak consists of 4 x 640S meters with Modbus see Sierrainstruments com for information about Model 640S meters 1 x Control box with HMI and 4 20mA 0 5V output module 3 x cable s power output 4 20mA 0 5V cable for daisy chaining the 640S meters In the default mode the four models of the 640S are added together and divided by four but the operator can turn units On or Off For example if one unit is ...

Page 8: ...tly to prevent mistakes The middle connector is the 24 VDC Power supply in The left connector is 4 20mA output with the grand average flow rate This is an active output do not apply loop power The right connector is for daisy chaining the 640 meters This is a 4 wire daisy chain two wires for the power supply and two wires for the modbus communication Figure 3 Pinouts of the HMI 24VDC in Output 4 2...

Page 9: ...n the terminal block Torque all connections to 4 43 to 5 31 in lbs 0 5 to 0 6 Nm All EEx installations must use an approved EEx fitting at both cable entries into the enclosure If conduit seals are used they must be installed within 18 inches of the enclosure Figure 4 DC Power Wiring Connecting Modbus Communication to Individual Model 640S Meters After opening the enclosure the modbus communicatio...

Page 10: ...rminator resistor between the yellow and green wire Daisy chain the modbus A and B for all four 640S meters to the connector of the HMI The shield of the cable can be connected to the connector pin called shield See Figure 2 and to the modbus communication print number 3 of the 3 way terminal The RS485 is an optical isolated interface Don t connect the RS485 shield to ground of the power supply un...

Page 11: ... that this might not be the most accurate way for your application knowing the flow profile and install according to that profile is preferred Divide the duct in four equal quadrants Insert the middle of the sensors of the probe to 0 15 x D D diameter of the duct into the duct Make sure that the probes are turned 90º from each other See picture below Although a Multi Trak theoretically compensates...

Page 12: ... box before the unit which you want to convert to or if you don t want to convert the unit press the same unit After pressing the square box your choice will be set by a cross Press next button to proceed In our example we have changed from NMPS to SFPH NOTE All Multi Trak meters start with a VELOCITY reading Later steps will convert this into mass flow units like lbs hr or SLPM if desired 4 Press...

Page 13: ... the average flow in this particular example there is assumed to be a fault with that point and it is removed from the grand average There is also the possibility to set a delay in seconds When a meter is out of range a timer will start and if the flow recovers within this time the alarm will not go off By pressing the contribution button in the alarm limits screen the user can see what every mete...

Page 14: ... FFS of unit 1 is 12 5 but for UFS is 3 00 entered Now at a flow of 3 00 the output is 20mA The output is always 4mA if there is no flow The output is the average flow 9 Once the user has setup the Multi Trak to his requirements he can go back to the MultiPoint menu and choose velocity or Mass with mass you can choose normalized standardized or real mass flow Information on the screen 1 2 3 4 stan...

Page 15: ...arameters of the individual meter The parameters are Tag and Serial number flow totalizer UFS and K factor By pressing the Settings button the user can change some settings The user can reset the totalizer by pressing the Reset button and confirm with the Yes button The user can change the k factor by pressing the Adjust button behind the k factor number A screen will appear where the user can cha...

Page 16: ...00 of the factory full scale setting factory full scale is normally set to 125 of the user specified maximum flow rate This adjustment can be made for each flow range If in doubt read the manual Sierra Series 640 Flow Meter The settings screen also shows the last calibration date and the Factory Full Scale Those are not changeable ...

Page 17: ...uments Sales Agent who is also well trained in the operation of the product IMPORTANT When contacting Technical Support make sure you have included the following information The type of Multi Trak serial number all marked on the instrument data label The problem you are encountering and any corrective action taken CUSTOMER SERVICE AND SUPPORT INFORMATION Email Technical Support service sierrainstr...

Page 18: ...online on Sierra s website Online registration of all of your Sierra products is required for our warranty process Register now at www sierrainstruments com register LIFETIME LIMITED WARRANTY ON PATENTED DRYSENSE SENSOR TECHNOLOGY In addition to Sierra s standard one 1 year manufacturing warranty on all instruments produced Sierra also offers a lifetime warranty on all DrySense sensors standard wi...

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