User guide

ManualsBrandsIntek ManualsEquipmentRheoVac 940

TABLE OF CONTENTS

SECTION 1 — GENERAL INFORMATION ....................................... - 1 -

1.1 INTRODUCTION ................................................. - 1 -

1.2 PRINCIPLE OF OPERATION ....................................... - 2 -

1.3 TECHNICAL SPECIFICATIONS ..................................... - 2 -

1.4 PRECAUTIONS .................................................. - 2 -

SECTION 2 — INSTALLATION ................................................ - 4 -

2.1 INTRODUCTION ................................................. - 4 -

2.2 RheoVac MONITOR INSTALLATION/SITE SELECTION ................ - 4 -

2.2.1 Transducer Site Selection ..................................... - 4 -

2.2.2 Electronics Unit Site Selection ................................. - 4 -

2.3 MOUNTING HARDWARE INSTALLATION .......................... - 6 -

2.4 TRANSDUCER INSTALLATION .................................... - 6 -

2.5 ELECTRICAL CONNECTIONS ..................................... - 8 -

2.6 RheoVac MONITOR GROUNDING ................................. - 13 -

SECTION 3 — OPERATION .................................................. - 15 -

3.1 GENERAL INFORMATION ....................................... - 15 -

3.2 SYSTEM START-UP ............................................. - 15 -

3.3 OUTPUT SIGNALS .............................................. - 15 -

3.4 IBM-PC SOFTWARE ............................................. - 16 -

3.4.1 SOFTWARE INSTALLATION ............................... - 17 -

3.4.2 SOFTWARE OPERATION .................................. - 17 -

3.4.3 DATA PROCESSING ....................................... - 18 -

3.5 CUSTOM SOFTWARE ........................................... - 19 -

SECTION 4 — MAINTENANCE ............................................... - 21 -

4.1 GENERAL MAINTENANCE ....................................... - 21 -

4.2 CALIBRATION .................................................. - 21 -

4.3 SPARE PARTS .................................................. - 21 -

4.4 TROUBLE SHOOTING ........................................... - 21 -

SECTION 5 — CUSTOMER SERVICE ......................................... - 25 -

5.1 QUESTION ON EXISTING HARDWARE ............................ - 25 -

5.2 TROUBLE SHOOTING ........................................... - 25 -

5.3 FACTORY AND FIELD SERVICE .................................. - 25 -

5.4 QUESTIONS ON NEW EQUIPMENT ................................ - 25 -

SECTION 6 — CUSTOM INFORMATION ...................................... - 26 -

6.1 UNIT IDENTIFICATION .......................................... - 26 -

6.2 CONFIGURATION ............................................... - 26 -

6.3 SPECIAL INSTRUCTIONS ........................................ - 26 -

Manual no. RVAC Rev. D

I:\OFFICE\WPMANUAL\RHEOVAC\RHEOVAC.RVD

Summary of content (28 pages)

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TABLE OF CONTENTS SECTION 1 — GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 PRINCIPLE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 TECHNICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . .
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WA RRANTY Intek, Inc.
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SECTION 1 — GENERAL INFORM ATION 1.1 INTRODUCTION For the first time, all necessary properties of the fluid in the condenser exhauster line are directly measured to provide an accurate determination of air in-leakage.
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1.2 PRINCIPLE OF OPERATION The principal features of the RheoVac monitor are shown in Figure 1. At the heart of the RheoVac monitor is the Rheotherm flow transducer which uses the same patented thermal sensing technique employed in all precision flow instruments manufactured by Intek.
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• Use proper input power — check the power select switch position on the electronics. Select either 115 Vac or 230 Vac before applying power. • Check the transducer maximum temperature and pressure ratings — never operate a transducer at or subject it to temperatures or pressures beyond its specified limits. . . WARNING - Never allow live high temperature steam to flow either direction in the exhauster line where the probe is located.
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2.1 INTRODUCTION These instructions cover installation of the RheoVac monitor in its standard configuration. Additional information pertaining to your unit is covered in SECTION 6 — CUSTOM INFORMATION. Carefully read these instructions prior to installing the equipment. 2.2 RheoVac MONITOR INSTALLATION/SITE SELECTION 2.2.1 Transducer Site Selection # Select the installation site.
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-5Transducer Installation Detail
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2.3 MOUNTING HARDWARE INSTALLATION Î Check hardware. Verify that the probe slides through the hot tap assembly. Ï Check installation configuration. Make sure the probe is parallel to the floor. (see Figure 3). Ð Check installation clearance. Verify there is a probe insertion clearance of 4 feet from the pipe wall. Ñ Install the mounting hardware. Drill a 1½” through hole and weld the thread-o-let onto the condenser vacuum pipe (See Figure 3). Thread the hot-tap assembly into the threado-let.
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Figure 5 RheoVac Electronics Enclosure -7-
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2.5 ELECTRICAL CONNECTIONS . . WARNING: Read the entire contents of this section before powering up the unit. Improper hookup may result in damage to this instrument or the interfacing equipment. Î Verify/configure the input power. The input power requirement is listed on the tag on the electronics enclosure. Be sure the input power source to be used is properly selected in the unit. Input power can be either 115 Vac or 230 Vac single phase, 50-60 Hz. The power configuration may be changed in the field.
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TABLE I. Ten 4-20 mA Wire Terminal Assignment CONFIGURATION PIN ASSIGNMENT OUTPUT VARIABLE DESCRIPTION Ð Active 4-20 mA Passive 4-20 mA ! + ! + ACTUAL VOLUME FLOW [ACFM] A B B A TOTAL MASS FLOW [lbs/hr] C D D C WATER VAPOR MASS FLOW [lbs/hr] E F F E RheoVac PRESSURE ["Hg] G H H G WATER VAPOR SPECIFIC VOLUME [cu.
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- 10 Monitor Wiring Detail (with 10 channel 4-20 mA output)
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Ñ Figure 9 provides the RheoVac wiring detail for the 10 channel 4-20 mA outputs. Table I provides the appropriate connection identification. As stated, the output signals are not isolated from each other and therefore the 4-20 mA receiver channels must be independently isolated. A typical current output circuit is shown in Figure 10. The current control circuitry works by controlling the (! ) side return current through Q1 which returns current through the isolated, but circuit-common, ground (L 1).
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Õ Pull wires through the conduit. Wire for power connection must be at least 24 gauge. After pulling the wire, pot the conduit or wires near the enclosure if there is any possibility of water from condensation or spray entering the enclosure through the conduit. . CAUTION: The electronics are not protected against condensed liquid water inside the enclosure.
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TABLE II.
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- 14 Serial Communications Interface
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SECTION 3 — OPERATION 3.1 GENERAL INFORMATION The RheoVac monitor is compensated and linearized for a wide range of flowing media temperatures, pressures, and water vapor contents. However, abrupt changes in these parameters can cause the instrument to temporarily read the flow rate improperly, which could lead to transient spikes in the flow indication. In particular, if liquid (water) hits the probe tips, there will be high flow indications until all the water vaporizes.
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Table III. Process Variable Definitions and 4-20 mA Range PROCESS VARIABLE 4-20 mA FULL SCALE VALUE ACTUAL VOLUME FLOW [ACFM] 5000 The actual volumetric flow rate of gases leaving the condenser. It is a measure of exhauster capacity. Decreased capacity means pump degradation. TOTAL MASS FLOW [lbs/hr] 10000 The total mass flow rate of the flowing gas. Note: this value is not a measure of air in-leak. It is a measure of steam jet ejector capacity.
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System Requirements (minimum recommended): Windows 95, 98, or NT, 32M RAM Pentium 100MHz, SVGA 800 x 600 One (1) RS-232 serial port w/DB-9 connector Install the software by inserting disk 1 into an IBM-PC compatible disk drive, select that drive, and click on the “Setup” icon. A folder, C:\RHEOVAC, will be created and seven files will be copied to this folder. The two executable files are: “uninst.exe” and “RVMain95.exe”. The others are drivers and configuration files and must remain in the RheoVac folder.
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RheoVac 24hr Data Download - Selecting this choice initiates a download from the data stored in the RheoVac instrument. This operation takes a few minutes to complete. After the data has been transferred, you will be prompted to select a filename to store the data. The default filename is the instrument’s serial number with an “.eep” file extension. RheoVac Air In-Leak Monitor - Use this choice to plot selected data on single or dual charts.
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stamp by default in a “M/DD/YY HH:MM” format). You may prefer to reformat these cells to “M/DD/YY HH:MM:SSp/m” to display time to the nearest second in am/pm format. Once in your desired format, you may construct trend graphs using your spreadsheet or other analysis program. An Excel macro file is included to automatically format the raw downloaded or archived data. 3.5 CUSTOM SOFTWA RE Custom software may be developed by the user to receive and archive RheoVac data into a computer system.
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Figure 12 RheoVac Air In-leak Monitor IBM PC Display Menu for Plotting & Charting Data - 20 -
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SECTION 4 — M AINTENANCE 4.1 GENERAL MAINTENANCE Precautions should be taken to insure proper performance of all sensors. Since the quantification technique involves signal measurements, care should be exercised to prevent build-up of dirt and/or corrosive layers on the various terminal strip connections. Periodic checks with necessary cleaning should be performed to insure clean terminals. The joints of the sensor leads should occasionally be inspected for corrosion or presence of moisture. 4.
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TABLE VI. Trouble Shooting Guide OBSERVATION 'GENERAL FAU LT' 'MODE 0' PROBA BLE CAUSE 1. Shorted cable connection ACTION 1. Check for short in cable due to moisture or corrosion 2. * Contact factory 2. Damaged flow sensor 1. Improper cable hookup 2. Failed A/D circuit. Short between sensor terminals C and D of JP4 or electronics terminals 3 and 4 of JP2 3. Damaged flow sensor 1. Verify cable hookup is correct 2. Check cable connections for proper contacts or moisture & corrosion 1.
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When using the RheoVac software on a PC, the software may give you a “Communication Error.” Use the following table to determine the source of this message and appropriate action. TABLE VI. Trouble Shooting Guide (software com munication erro rs) OBSERVATION PROBA BLE CAUSE ACTION Appears the first time the application was executed 1. Instrument not connected to the software defaulted serial port 2. Communication connections not made or instrument is not powered 1.
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TABLE VII. Field Check Readings JP4WIRE LABEL† TRANSDUCER CABLE / WIRE SIGNAL DEFINITION EXPECTED VOLT AGE [V dc] + ! B A Flow sensor common voltage sense < 1.0V C A Flow sensor current return 0.000V D F Flow sensor heated RTD voltage sense Range: 5 to 40mV E B Flow sensor heated RTD current source Range: .2 to .4V F B Flow sensor reference RTD voltage sense Range: .2 to .4V G B Flow sensor reference RTD current source Range: .2 to .
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SECTION 5 — CUSTOMER SERVICE Intek's corporate philosophy is to help solve our customer's difficult flow measurement problems. When you purchase a RheoVac monitor you also receive Intek's outstanding customer service. For sales or product service, call your local representative or Intek directly at (614) 895-0301 8AM to 5PM EST/EDT weekdays or fax us anytime at (614) 895-0319. E-mail inquiries should be sent to sales@Intekflow.com or techsupport@Intekflow.com.
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SECTION 6 — CUSTOM INFORM ATION 6.1 UNIT IDENTIFICATION Model no.: Serial no.: Customer identification: 6.2 CONFIGURATION The marked (X) items denote the configuration of this unit, as originally shipped from the factory.