Manual

ManualsBrandsIntek ManualsEquipmentRheoVac SENTRY

TABLE OF CONTENTS

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

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

1.2 BENEFITS ....................................................... - 1 -

1.3 USES ........................................................... - 2 -

1.4 PRINCIPLE OF OPERATION ....................................... - 2 -

1.5 TECHNICAL SPECIFICATIONS ..................................... - 3 -

1.6 PRECAUTIONS .................................................. - 4 -

SECTION 2 — INSTALLATION ................................................ - 5 -

2.1 SYSTEM CONFIGURATION ....................................... - 5 -

2.2 RheoVac SENTRY INSTALLATION/SITE SELECTION .................. - 5 -

2.2.1 Probe Site Selection .......................................... - 5 -

2.2.2 CPU/Distribution Box Site Selections ............................ - 6 -

2.3 HOT TAP INSTALLATION ......................................... - 7 -

2.4 PROBE INSTALLATION ........................................... - 7 -

2.5 ELECTRICAL CONNECTIONS ..................................... - 9 -

SECTION 3 — OPERATION .................................................. - 13 -

3.1 GENERAL INFORMATION ....................................... - 13 -

3.2 OUTPUT PARAMETERS ......................................... - 13 -

3.3 RheoVac SENTRY PROBES ........................................ - 13 -

3.4 CPU TOUCH SCREEN ............................................ - 14 -

3.5 ETHERNET or MODEM OUTPUT .................................. - 18 -

3.6 SEARCHING FOR LEAKS WITH MULTI-PROBE SYSTEM ............ - 20 -

SECTION 4 — MAINTENANCE ............................................... - 22 -

4.1 GENERAL MAINTENANCE ....................................... - 22 -

4.2 CALIBRATION .................................................. - 22 -

4.3 SPARE PARTS .................................................. - 22 -

4.4 TROUBLE SHOOTING ........................................... - 22 -

SECTION 5 — CUSTOMER SERVICE ......................................... - 24 -

5.1 QUESTION ON EXISTING HARDWARE ............................ - 24 -

5.2 TROUBLE SHOOTING ........................................... - 24 -

5.3 FACTORY AND FIELD SERVICE .................................. - 24 -

5.4 QUESTIONS ON NEW EQUIPMENT ................................ - 24 -

SECTION 6 — CUSTOM INFORMATION ...................................... - 25 -

6.1 UNIT IDENTIFICATION .......................................... - 25 -

6.2 CONFIGURATION ............................................... - 25 -

6.3 SPECIAL INSTRUCTIONS ........................................ - 25 -

Manual no. RVSentry Rev. A

I:\OFFICE\WPMAN UAL\SENTRY\RVSentryRev. A.wpd

Summary of content (27 pages)

PAGE 1
TABLE OF CONTENTS SECTION 1 — GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 BENEFITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 USES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.
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WARRANTY Intek, Inc.
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SECTION 1 — GENERAL INFORMATION 1.1 INTRODUCTION In 1994, Intek Inc. introduced the RheoVac® air in-leak monitor for continuously measuring condenser air in-leakage.
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1.3 USES The RheoVac SENTRY System can be used for a multitude of performance related subjects, such as: • Continuous air in-leak monitoring • Vacuum pump performance testing • Operating with zero excess back pressure • Load dependent air in-leak isolation • Optimizing condenser performance • Scheduled preventive maintenance • Leak detection during hogging operation • Minimizing heat rate • Optimizing condensate/water chemistry • Understanding condenser performance 1.
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At the heart of the RheoVac probe is the Rheotherm flow transducer, which uses the same patented thermal sensing technique employed in all precision flow instruments manufactured by Intek. Two temperature sensors are used; one sensor is in thermal equilibrium with the flow medium and provides a temperature and flow signal reference, while the second sensor is located near a constant power heater so that its temperature is always above that of the fluid.
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1.6 PRECAUTIONS • • • • • • Read the entire manual before installing and operating the RheoVac probes and SENTRY System. Carefully select the best location for installation of the sensing probe. Adequate straight run and freedom from standing water in the line are vital to achieving optimal performance from the RheoVac system (See Figure 2). Use reasonable care in handling the sensing probe(s) — the sensing components are delicate.
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SECTION 2 — INSTALLATION 2.1 SYSTEM CONFIGURATION The system provided consists of: • • • • a RheoVac SENTRY central processing unit (CPU) in a metal housing.
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Figure 2 RheoVac Probe Insertion Recommendation 2.2.2 CPU/Distribution Box Site Selections # Select the CPU installation site. The CPU should be located in a cool, dry area. The electronics are not protected against condensed liquid water inside the enclosure. The location should permit easy viewing and access to the touch screen display. Maximum temperature in the area should not exceed 100°F. # Check for input voltage access.
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These instructions cover installation of the RheoVac probes and SENTRY CPU 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. 2.3 HOT TAP INSTALLATION Î Check installation configuration. Make sure the probe is parallel to the floor (see Figure 4). Ï Check installation clearance. Verify there is a minimum probe insertion clearance of 4 feet from the pipe surface.
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-8Probe Installation Detail
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2.5 ELECTRICAL CONNECTIONS (Make all hardware & plug-in connections with power off) A. Distribution Box 1. Contents a. Connection point for the RS485 wires (Blue and White), +24vdc power (Red), ground (Black), and shield. b. Connection point for the input from and output to other distribution enclosures. c. Connection points for up to four devices (probes or transmitters). d. Power "on" LED. 2. Connections a.
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B. Electronics Unit (CPU) (See Figure 6) 1. Sensor Power and Communication Line: Connect the RS485 Communications/Power cable, which connects the first distribution enclosure to the CPU. 2. Main Power: Connect main power terminals to a dedicated 120Vac, single phase, 15 amp circuit. An external disconnect switch should be used for disconnecting power to the system. (There is an internal circuit breaker located behind the display panel, but it is not easily turned off in the event of a problem.
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Figure 6 CPU Wiring - Part 1 - 11 -
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Figure 7 CPU Wiring - Part 2 - 12 -
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SECTION 3 — OPERATION 3.1 GENERAL INFORMATION The RheoVac probe outputs are 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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a given probe remain unchanged. To custom label the SENTRY screen with actual probe locations, you will need to plug a PS-2 style computer keyboard into the back of the SENTRY touchscreen. After plugging in the keyboard, reboot the SENTRY (cycle power off, then on). Press the button labeled ‘Recal/Repair’ on the RheoVac SENTRY front panel. When the Recal/Repair options panel appears, press the button labeled ‘Probe Labels.’ The Probe Location/Information panel will appear.
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Probe Data To view the data monitored by the RheoVac SENTRY probes, select the appropriate probe icon on the main touch screen display. This brings up the following data screen: Figure 9 - Ten Parameter Probe Display in Meter/Gauge Format The data from all ten parameters monitored by the probe is updated continuously. From this screen, one can check the same parameters from each probe by selecting another probe serial number in the “Probe Selected” field.
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Figure 10 - Plot or Strip Chart Screen Diagnostic Tool The ‘Diagnostic Tool’ button leads to the display screen shown in Figure 11. Figure 11 - Diagnostic Screen While this illustrative display only shows the data for two probes, the actual screen will show the data from all probes in the SENTRY System.
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with the probe serial number, is always the current set of measured data for that probe. The bottom line of the data pair, whose button shows UPDATE or HOLD at the left side, can be user selected and placed on ‘HOLD’ to capture the measurements of a given moment (or set of system conditions.
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Figure 14 3.5 ETHERNET or MODEM OUTPUT The RheoVac SENTRY data and stored files are accessed via an Ethernet (10Base-T) connection. The connection is made through an RJ45 port, shown in Figure 7. The line is brought into the SENTRY box through conduit hubs in the bottom of the enclosure. Historical data files for each probe in the RheoVac SENTRY System are stored on the hard drive of the SENTRY CPU.
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Data available under NetDDE includes Probe Serial Number, Time Stamp, Air In-leak, Total Mass Flow, Water Vapor Flow, Pressure, Water Partial Pressure, Actual Volume Flow, Relative Saturation, Water Vapor Specific Volume, Water/Air Mass Ratio, and Temperature. This data is arranged in a table as shown in Figure 15 so that the NetDDE client can request information from each cell of the table using the provided NetDDE Service Name, Topic Name, and the corresponding row and column as the NetDDE Item Name.
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3.6 SEARCHING FOR LEAKS WITH MULTI-PROBE SYSTEM The next figure shows typical recommended installation locations for probes in a condenser system where five probes are desirable and for hands free remote condenser system diagnostics. The location for each of the five probes is identified by a number which is used in the subsequent discussions with respect to identifying performance information.
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Leak Location Probe Indications of Air In-Leak (SCFM) and Plant DO Small leak or faulty exhauster down stream of probe 4 Slightly higher or normal DO 1 = 2, 1 + 2 = 3 = 4 + 5, 4<5 Large leak or failed exhauster down stream of probe 4 Slightly higher or normal DO 1 = 2, 1 + 2 = 3 = 4 + 5, 5 < 4 (Back flow at 4) Center joint seal, LP bearing seal, or other central location Slightly higher or normal DO 1 = 2, 1+2=3=4+5 Some examples of observed RheoVac monitor measured data and corresponding identifica
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SECTION 4 — MAINTENANCE 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 on the probe, or corrosion on terminal strip connections in the electronics box. Periodic checks with necessary cleaning should be performed to insure clean terminals.
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Table III - Trouble Shooting Guide Error Log Description/Symptom Communications not being received from probe(s) Probable Cause 1. 2. 3. 4. Improper cable hookup Blown main fuse Failed RS-485 circu it Damaged flow sensor Action 1. Verify cable hookup is correct 2. Check cable connections 3. Contact factory Invalid checksum received from probe(s) 1. Failed RS-485 communications component 1. Contact factory Invalid checksum received from probe(s) 1. Failed RS-485 communications component 1.
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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 instrument 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 techsupport@intekflow.com. Our customer service staff will provide assistance promptly. 5.
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SECTION 6 — CUSTOM INFORMATION 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.