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Summary of Contents for Teledyne 801
- Page 1 Model 801 Flowmeter Operating Manual Document ID 60-4480-801 | Rev - Date: April 2025 Use and Disclosure of Data: Information contained herein is classified as EAR99 under the U.S. Export Administration Regulations. Export, reexport or diversion contrary to U.S. law is prohibited.
- Page 2 This confidential document was prepared by the staff of Teledyne Instruments, the Company, and is the property of the Company, which also owns the copyright therein. All rights conferred by the law of the copyright and by virtue of international copyright conventions are reserved to the Company. This document must not be copied, reprinted or...
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Page 3: Table Of Contents
Table of Contents Introduction ........................1 Equipment ........................1 Description ........................2 System Operation ......................4 Setting Up ........................4 Switch On ........................4 Running the Unit ......................5 Setting Units, Averaging Mode, and Averaging Period ..........6 4.4.1 Changing Averaging Period ..................... 6 Option Menu ......................... -
Page 5: Introduction
Flat Type Transducer. Equipment 604480210 Model 801 EM Flat transducer (single axis) | CDU (logging) | Wading Rod Set | 2m cable | PC Interface cable 604480211 Model 801 EM Flat transducer (single axis) | CDU (logging) | Wading Rod Set | 6m... -
Page 6: Description
Model 801 Flowmeter Operating Manual Description The 801 electromagnetic flow meter uses the Faraday principle to measure the flow of water past the sensor. The flat sensor has the sensing electrodes on one surface of the sensor; these should normally be facing uppermost. - Page 7 Model 801 Flowmeter Operating Manual Section 3 | Description There are 3 types of Averaging Modes: Fixed Average: The unit performs one average over the period set. At the end of the averaging period, the unit stops and displays the average and SD. It will commence another averaging period when requested by pressing START.
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Page 8: System Operation
Section 4 | System Operation Model 801 Flowmeter Operating Manual System Operation 4.1 Setting Up To prepare the system for use: Clean the probe electrodes to remove any grease or dirt. Insert batteries (8 1.5v C type cells) if external power not being used. For maximum battery life, alkaline type cells are recommended. -
Page 9: Running The Unit
Model 801 Flowmeter Operating Manual Section 4 | System Operation 4.3 Running the Unit Pressing CONTINUE at the title screen or pressing EXIT at any of the OPTION SET-UP screens reveals one of the three possible displays shown below, depending on what mode the unit was in when it was last used. -
Page 10: Setting Units, Averaging Mode, And Averaging Period
Section 4 | System Operation Model 801 Flowmeter Operating Manual 4.4 Setting Units, Averaging Mode, and Averaging Period Selecting SET-UP in the Run Menu reveals the following display: M/SEC FT/SEC Toggles the Speed measurement between meters and feet per second. -
Page 11: Option Menu
Model 801 Flowmeter Operating Manual Section 4 | System Operation 4.5 Option Menu (Logging, Beeper, Backlight, Sub Options) Pressing OPTIONS SET-UP at the Title Screen or OPTIONS in the Run Menu Setup screens reveals the following display: LOGGING YES/NO This key switches the logging facility On and Off. Up to 999 records may be stored. -
Page 12: Logging Menu
Section 4 | System Operation Model 801 Flowmeter Operating Manual 4.6 Logging Menu Selecting LOGGING MENU at the OPTIONS MENU reveals the following display. SET DATE/TIME Allows access to the CHANGE DATE/TIME screen, where the unit's internal clock can be altered to correctly time stamp the recorded data. See Section 4.6.1. -
Page 13: Change Date/Time
Model 801 Flowmeter Operating Manual Section 4 | System Operation 4.6.1 Change Date/Time Selecting SET DATE/TIME at the LOGGING MENU reveals the following display. INCREASE Increases the currently selected number by 1. DECREASE Decreases the currently selected number by 1. -
Page 14: Extracting Data
Section 4 | System Operation Model 801 Flowmeter Operating Manual 4.6.3 Extracting Data Selecting EXTRACT DATA at the LOGGING MENU reveals the following display. Connect the unit to a PC via the data interface lead supplied. Run a terminal emulation program on the PC, ensuring that communications are correctly set to 4800 baud, 8 data bits, 1 stop bit, no parity bits, flow control NONE. -
Page 15: Sub Options Menu
Model 801 Flowmeter Operating Manual Section 4 | System Operation 4.7 Sub Options Menu Selecting SUB OPTIONS from the OPTIONS MENU reveals one of the following displays: i. If Frequency or Alarm Outputs are not fitted: ii. If Frequency or Alarm Outputs are fitted (Factory option):... -
Page 16: Analogue Output [Factory Fit Option]
Section 4 | System Operation Model 801 Flowmeter Operating Manual 4.8 Analogue Output (Factory Fit Option) The analogue output is factory set to provide +/- 5v for the range +/- 5 m/s. The voltage is derived from a D/A from the last updated average velocity figure. Alternatives analogue outputs are available including 4-20mA, where the Control Display Unit provides the power for the 4-20mA. -
Page 17: Power Supply
Model 801 Flowmeter Operating Manual Section 5 | Power Supply Power Supply 5.1 Changing Batteries The 8 “C” cells are housed in the battery compartment in the bottom of the CDU. Access is gained by unscrewing the central retaining screw and pulling out the end cap and PCB assembly. The cells can then be removed. -
Page 18: External Power [Factory Fit Option]
Section 5 | Power Supply Model 801 Flowmeter Operating Manual 5.3 External Power (Factory Fit Option) The unit will operate on an input voltage range of 7 to 15 vDC. The optional External DC power cable has 4mm plugs (Red +ve, Black -ve). If these are connected using the wrong polarity, an internal fuse will blow. -
Page 19: Calibration
Model 801 Flowmeter Operating Manual Section 6 | Calibration Calibration Selecting DIRECT EM COMMS at the OPTIONS MENU enables the user, using a PC in terminal mode via the optional DC data lead, to read and alter the EM calibration. -
Page 20: Operation
The third straight line starts from Max_lt2 and including it, up to Max_lt3 but not including it. The last line limit (e.g. Max_lt3 in the example above) must be set to more than the maximum number of counts. Teledyne usually sets this to 40000. 6.1 Adjusting Zero Offset... -
Page 21: Determining The Updated Offset
Model 801 Flowmeter Operating Manual Section 6 | Calibration 6.1.1 Determining the Updated Offset 6.1.1.1 Method 1 - Using Data Displayed at Zero Flow • Note the zero reading (Zr) in still water in mm/sec. (And note the display reading is in M/sec.) Great care should be taken to ensure that the water is still. -
Page 22: Care And Maintenance
7.1 Storage Between uses, the Model 801 and CDU should be stored securely in their transit cases with the CDU batteries removed to prevent the possibility of battery leaks. See section 5.1 for instructions on removing batteries, but do not fit new batteries until the instrument/CDU is taken out of storage. - Page 23 Model 801 Flowmeter Operating Manual Section 8 | Certifications Certifications This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
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