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Summary of Contents for Hydreka 801
- Page 1 HYDREKA Model 801 Electromagnetic Flow Meter Operation Manual 801 Operation Manual Page 1...
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Page 2: Table Of Contents
CONTENTS SECTION DESCRIPTION PAGE INTRODUCTION ........................EQUIPMENT ........................2.1. Standard 801 System......................2.2. Wading Accessories......................2.3. Options ........................DESCRIPTION ........................SYSTEM OPERATION ........................4.1. Setting up ........................4.2. Switch on ........................4.3. Running the unit ....................... 7 4.4. Setting Units, Averaging Mode and Averaging Period ............ -
Page 3: Introduction
2.1. Standard 801 System The standard 801 system has a choice of sensors and comprises the following, and can be used with either 19 or 20mm diameter wading rods which customers may already have for use with impeller current meters:... -
Page 4: Description
DESCRIPTION The 801 electromagnetic flow meter uses the Faraday principle to measure the flow of water past the sensor. Two different types of sensor are available for the 801: the cylindrical sensor and flat sensor. The cylindrical sensor has its electrodes on the side and the volume of water that is being sensed is a spherical volume around the sensor to a diameter of about 120mm. - Page 5 The analogue output is +/-5volts for the speed range +/-5 M/sec, and the analogue signal is based on the latest average figure shown on the CDU. The analogue output connector also enables external DC to be applied. 801 Operation Manual Page 5...
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Page 6: System Operation
This key selects the OPTIONS menu, which allows the user to set up various hardware configurations [Logging On/Off, Beeper On/Off and Backlight On/Off]. This menu also allows access to the USER CALIBRATION menu, and to the LOGGING MENU. For further information refer to Section 4.5. 801 Operation Manual Page 6... -
Page 7: Running The Unit
If the data interface lead is connected, the end of average values will also be sent to the PC. 801 Operation Manual Page 7... - Page 8 [see DISPLAY 1 for an example]. The message will remain until batteries are replaced. See Section 5. for more information on power consumption and battery life. 801 Operation Manual Page 8...
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Page 9: Setting Units, Averaging Mode And Averaging Period
Refer to Section 4.4.1. OPTIONS Press this key to return to the OPTIONS menu [Section 4.5.] ACCEPT When the sampling regime is correctly set up, press this key to return to the RUN menu [Section 4.3.]. 801 Operation Manual Page 9... -
Page 10: Changing Averaging Period
Changes the number of 10's of seconds in the averaging period. Changes the number of 1's of seconds in the averaging period. EXIT Returns to the RUN MENU SETUP screen [Section 4.4]. Note that "000" seconds cannot be set, and the maximum is 600 seconds. 801 Operation Manual Page 10... -
Page 11: Options Menu [Logging, Beeper, Backlight, Direct Em Comms]
EM data and setting of the calibration coefficients. Refer to Section 6. This sub-options menu also allows, if the options are fitted, frequency outputs and alarms to be set. EXIT Puts the unit into Run Mode, using the hardware configurations selected [see Section 4.3]. 801 Operation Manual Page 11... -
Page 12: Logging Menu
Press YES to continue, or EXIT to return to LOGGING MENU. If YES is pressed, a message will confirm that memory has been erased. Press EXIT to return to LOGGING MENU. EXIT Returns user to OPTIONS MENU. Refer to Section 4.5. 801 Operation Manual Page 12... -
Page 13: Change Date/Time
INCREASE Increases the currently selected number by 1. DECREASE Decreases the currently selected number by 1. NEXT Selects the next number in the time/date sequence. EXIT Returns user to LOGGING MENU. Refer to Section 4.6. 801 Operation Manual Page 13... -
Page 14: Viewing Stored Data
S P E E D + X . X X X S D = X . X X X P E R I O D S E C S S S S E X I T > > > 801 Operation Manual Page 14... -
Page 15: Extracting Data
U P L O A D I N G D A T A # I D E N T F F F R E X I T > > > EXIT Returns to LOGGING MENU. Refer to Section 4.6. 801 Operation Manual Page 15... - Page 16 C O M M S > > > < < < H I A L A R M + 1 . 2 A L A R M + 0 . 3 E X I T > > > 801 Operation Manual Page 16...
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Page 17: Analogue Output [Factory Fit Option]
Pin G Power +ve Pin A Pin H Power -ve Pin B* Pin K Power sense Pin C* * These two are connected together in the mating connector. This “senses” that external DC is being applied. 801 Operation Manual Page 17... -
Page 18: Power Supply
The External DC power cable connection details are: CDU end Function Free End 3 way in-line Male MilSpec connector 4mm “banana” plugs [LMH06F 08 33 SN] [sockets] Pin A Pin B Black 801 Operation Manual Page 18... -
Page 19: Calibration
Sets the X Axis Hydro Calibration Note that the X axis referred to in the above table relates to the single axis used on the 801. If the user wishes to alter the calibration from the factory setting, they will be required to enter the calibration coefficients. The calibration coefficients are stored within the microcontroller in an ASCII text string. - Page 20 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, and Valeport usually use the figure 40000. 801 Operation Manual Page 20...
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Page 21: Care And Maintenance
Control Display Unit. In principle the calibration is for life, but as with most instruments it is advisable that check calibrations should be carried out on an annual basis. 801 Operation Manual Page 21...
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