Related Manuals for Magnetrol STI Echotel 338
Summary of Contents for Magnetrol STI Echotel 338
- Page 1 Echotel ® Model 338 Installation and Operating Manual Two-Wire Non-Contact Ultrasonic Transmitter For Level, Volume, and Open Channel Flow Measurement...
- Page 2 All rights reserved. narrative form. The following styles are used for notes, Magnetrol reserves the right to make changes to the prod- cautions, and warnings. uct described in this manual at any time without notice.
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Page 3: Table Of Contents
Echotel Model 338 Non-Contact Ultrasonic Transmitters Table of Contents 1.0 Installation 1.7 Configuration without LCD Module.....31 1.1 Unpacking ...............1 1.7.1 Minimum Level/Empty Tank 1.2 Mounting and Application Considerations ....1 (4 mA setpoint)...........32 1.2.1 Position............1 1.7.2 Maximum Level/Full Tank 1.2.2 Orientation ..........1 (20 mA setpoint).........32 1.2.3 Temperature..........1 1.7.3 Fail-safe Indication by the mA... -
Page 4: Installation
Installation Caution: If equipment is used in a manner not specified by manufac- turer, protection provided by equipment may be impaired. Unpacking Unpack the instrument carefully. Inspect all units for damage. Report any concealed damage to carrier within 24 hours. Check the contents of the packing slip and purchase order. -
Page 5: Obstructions
1.2.4 Obstructions Ensure that no obstacles (e.g. fill pipes, ladders, bracing members, thermometers, etc) protrude into the ultrasonic beam. Even though one fixed object in the tank can be blocked out by appropriate programming, it is advised to avoid these obstructions. 1.2.5 Standpipes In applications where the material level may come into the dead zone, the transducer must be mounted in a stand-... -
Page 6: Electrostatic Discharge (Esd) Handling Procedure
Electrostatic Discharge (ESD) Handling Procedure Magnetrol’s electronic instruments are manufactured to the highest quality standards. These instruments use electronic components that may be damaged by static electricity pres- ent in most work environments. The following steps are recommended to reduce the risk of component failure due to electrostatic discharge. -
Page 7: Configuration
Configuration There are two methods of configuring the Echotel Model 338 transmitter: 1. Using the four push buttons and the plug-in LCD module to perform either the QuickSet or the Complete Configuration (see below). 2. Using the four push buttons while checking the status of the COM and ECHO LED’s. - Page 8 The middle row of the LCD module consists of a 6-digit alphanumeric display of all data. Engineering units for the numeric data are printed above and below the LCD. Two pointers are used to indicate which units pertain to the display that is currently being viewed.
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Page 9: Quickset Configuration
1.5.2 QuickSet Configuration NOTE: Configuration can only be done when the unit is receiving a good return signal and the ECHO LED is lit. Many level applications are easily set up by using the QuickSet Configuration. Open channel flow, volume, or more detailed level configuration is performed by using Section 1.6, Complete Configuration. -
Page 10: Basic Functions
1.5.3 Basic Functions The commands below set the basic functions of the 338 transmitter during QuickSet Configuration. Pushbutton Keys Function ENTER + DOWN Enter or exit QuickSet Configuration (press for 3 seconds) menu or DOWN Increase or decrease value of blinking digit, or scroll up/down to change parameters NEXT... - Page 11 NOTE: If no push buttons are pressed for 30 minutes, the transmitter will automatically return to the measurement mode, and oper- ate with the parameters entered during the last completed programming. NOTE: The Range, 4 mA, and 20 mA values shown below can be entered manually, or by automatic entry using the "Get Level"...
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Page 12: Complete Configuration
Complete Configuration NOTE: Configuration can only be done when the unit is receiving a good return signal and the ECHO LED is lit. Open channel flow, volume, and more advanced level appli- cations are configured using the Complete Configuration Menu. To enter (or exit from) this menu press the ENTER NEXT keys simultaneously for 3 seconds. -
Page 13: Measurement Configuration Parameters
1.6.1 Measurement Configuration Parameters The following pages explain how to configure each param- eter of the Complete Configuration. Since some Parameter Registers are not used by the 338, several parameters are skipped. Refer to Configuration Parameter Worksheet, Section 2.8, for a complete listing of all parameters. Many of the registers have multiple configurations within the same register. - Page 14 P01: - ba Bar Graph and Measurement Mode Factory default value for P01 is: 11 Bar Graph Indication Echo strength Current output Measurement Mode Displayed Measurements Distance DIST Level LEV, DIST Level in percentage LEV%, LEV, DIST Volume VOL, LEV, DIST Volume in percentage VOL%, VOL, LEV, DIST Flow...
- Page 15 P03: - a Displayed Values (Rounding & Decimal Position) Factory default value for P03 is: 0 Level and distance applications do not use P03 since the biggest number that can be displayed on the 6 digit LCD is 600 cm, or 240 inches. Displayed values for volume and open channel flow applications can become quite large, and for this reason it may be easier to read the LCD if rounding is used.
- Page 16 P04: Range Range is the maximum measuring distance. For level and volume applications this is the distance from the face of the transducer to the bottom of the tank. LEVEL = P04 (programmed) – DISTANCE (as measured from transducer face to liquid surface) Since the measurement accuracy of the 338 depends on a correct value of P04, it is critical to know the exact dis- tance between the face of the transducer and the bottom of...
- Page 17 P05: Dead Zone Factory default value for P05 is: 10.0 inches Non-contact ultrasonic transmitters require a "dead zone" or "blind space" between the face of the transducer and the maximum liquid level. The minimum dead zone for the Model 338 is 10" (25 cm), as shown in the drawing at left.
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Page 18: Ma Current Output Settings
Open Channel Flow Applications Far end blocking is used in open channel flow applications to force a zero flow value when the level is below the chosen value. This allows the totalizer to stop recording flow when the level drops below the preset value. If the liquid level in the flume or weir falls below this value the 338 will: 1. -
Page 19: Performance Enhancement
NOTE: P13–P19 are not used by the Model 338 transmitter. 1.6.3 Performance Enhancement Registers 20 through 33 can be used to enhance the per- formance of the Model 338 in specific applications. P20: - - - a Damping Factory default value for P20 is: 5 (60 seconds). Parameter register 20 can be used to reduce undesired fluctuations of the display and output, and enhance per- formance in turbulent applications. - Page 20 P24: - - - a Target tracking speed Factory default value for P24 is: 0. Tracking Speed Application Conditions Standard For most applications Fast For fast changing level Special Used only in special applications. The meas- uring window (see P25) becomes inactive, and the 338 responds instantly to any target.
- Page 21 P26: (m/hr) Vessel fill rate Factory default value for P26 is: 2000 m/hr (6562 ft/hr). P27: (m/hr) Vessel drain rate Factory default value for P27 is: 2000 m/hr (6562 ft/hr). Parameters P26 & P27 can be used to set the rate of filling or draining a vessel.
- Page 22 False target Factory default value for P29 is: 0.0 A fixed object in the tank can be blocked out if it is within the ultrasonic beam angle and is creating a false echo. Measure the distance of the object from the face of the transducer and enter this into P29.
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Page 23: Volume Configuration
1.6.4 Volume Configuration Tank shape Factory default value for P40 is: 00 Volume can be displayed by entering the shape and dimen- sions of the tank. Most common tank shapes can be con- figured by using parameters P40 to P45. The Model 338 also has a 32-point linearization table (P47 &... -
Page 24: Open Channel Flow Configuration
1.6.5 Open Channel Flow Configuration Primary flow elements, formulas, and data Factory default value for P40 is: 00 Open channel flow measurement is accomplished by enter- ing the type of primary flow element being used in P40, and the flume or weir dimensions in P41 though P45. NOTE: P40 = 00 to P40 = 08 are not used for open channel flow applications. - Page 25 Reference distance Factory default value for P46 is: 0.00 Reference is the distance from the face of the transducer to the point where the flow rate becomes zero. This distance is different for each type of flume or weir. Measure the ref- erence distance as shown in the following pages of flumes and weirs and enter into P46.
- Page 26 P40= 12 Palmer-Bowlus flume (rectangular) Palmer-Bowlus flumes make a transition from a circular bottom section to a raised trapezoidal throat and then transition back to the circular bottom section. The range (P04) value is larger than the reference distance D/10 (P46) as shown at left.
- Page 27 P40= 16 Trapezoidal weir 0.0032 < Q[m /s] < 82 20 < P41[°] < 100 0.5 < P42[m] < 15 0.1 < h[m] < 2 /s] = 1.772*P42*h + 1.320*tg(P41/2)*h 2.47 The range (P04) value is larger than the reference distance (P46) as shown at left.
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Page 28: Linearization Table
1.6.6 Linearization Table Linearization Factory default value for P47 is: 0 The Model 338 offers a 32-point linearization table for primary flow elements (open channel flow) or tank shapes (volume) that are not in the standard software. This table can also be used for establishing a level to level relation- ship, if the speed of sound (see P31) is not known for a vapor. -
Page 29: Information Parameters
The linearization table must start off with a value being assigned to zero level in the vessel or primary flow element. This zero level is assigned to data pair point 01 as "L: 000.0" and "r: xxxx" filled in with the volume, open channel flow, or level value corresponding to the zero level value. - Page 30 P64 – P66 indicate temperatures that the transducer has been exposed to: Parameter Units Description ° F or ° C Current temperature of the transducer Maximum temperature the transducer has ° F or ° C been exposed to Minimum temperature the transducer has °...
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Page 31: Open Channel Flow Head And Totalizers
P75 Actual Deadzone Distance P05 is used to set the deadzone distance. P75 is a readout only parameter that shows the actual deadzone value that the unit uses for diagnostic purposes. 1.6.8 Open Channel Flow Head and Totalizers Head of Flow Head is the "h"... -
Page 32: Simulation Mode
NOTE: P81 is not used by the Model 338 transmitter. Default value is 00. 1.6.10 Simulation Mode The Simulation Mode enables the user to test the settings of the outputs. Once configured, the Model 338 is able to simulate a continuous change of level. Simulation type Factory default value for P84 is: 0 P84 is used to select the simulation as described below:... -
Page 33: Additional Software Parameters
1.6.11 Additional Software Parameters P97 Software Code P97 stores the software revision number. P99 Password Protection Factory default value for P99 is: 0000 P99 allows the entry of a password to protect all of the software configuration data. This provides protection against accidental (or intentional) re-programming of any parameters. -
Page 34: Configuration Without Lcd Module
Configuration without LCD Module Only level (no volume or open channel flow) applications can be programmed without the LCD module. The trans- mitter must be in the level measuring mode (P01) in order to configure the unit without the LCD module. The following data can be programmed without the LCD module: •... -
Page 35: Minimum Level/Empty Tank (4 Ma Setpoint)
1.7.1 Minimum Level/Empty Tank (4 mA setpoint) The 4 mA setpoint is configured with the liquid at its minimum level in the tank. Alternatively, the Model 338 may be placed at a distance from a target corresponding to the minimum level (maximum distance) in the tank. Action LED indication Check for a valid echo... -
Page 36: Fail-Safe Indication By The Ma Current Output
1.7.3 Fail-safe Indication by the mA Current Output This allows the fail-safe diagnostic output to be set to 3.6 mA, 22 mA, or Hold the last value. Make sure the valid echo LED is lit! Action LED indication Press UP steadily = Transmitter is in programming mode... -
Page 37: Programmng Error Indications During
1.7.6 Programming Error Indications during Programming by LEDs The table below shows error messages that may be seen while configuring a transmitter without an LCD module. Action LED error indication Correction Attempted programming Blinking twice indicates that a Reposition the unit such that a valid echo was not found valid echo can be found Attempted programming... -
Page 38: Reference Information
Reference Information Description The Model 338 ultrasonic transmitter performs level, volume, and open channel flow measurement of liquids. Measurement based on non-contact ultrasonic technology is especially suited for applications where no physical contact can be made to the surface of the liquid material to be measured. -
Page 39: Measurement Range Calculations
Measurement Range Calculations Ultrasonic non-contact transmitters are typically rated for a maximum range in ideal conditions. Experience has shown that maximum range must be reduced for certain factors. Although the maximum range rating is somewhat Beam spread interference conservative, each application must be evaluated for specific Beam spread interference conditions in the tank. -
Page 40: Velocity Of Sound In Gases Other Than Air
Velocity of Sound in Gases other than Air The velocity of sound through air is 1,128 ft/sec (343.8 m/sec) as indicated in P31. This velocity is used for all measurements made by the Model 338 transmitter. The table below contains the velocity of sound for various gases measured @ +68°... -
Page 41: Transmitter
2.6.2 Transmitter Supply voltage 12 to 36 VDC Power consumption 48 to 720 mW Output signal 4-20 mA isolated, 600 ohm load Diagnostic alarm 3.6, 22 mA, or Hold User Interface: Keypad 4-button menu-driven data entry Display Removable 6 digit custom LCD module with dual function bar graph LED status indication... -
Page 42: Physical
2.6.4 Physical 2.5 (65) 1.8 (46) 4.7 (120) PG16 (2) " NPT (2) (60) 2" NPT 2.1 (54) Model Number BASIC MODEL NUMBER Integrally mounted transmitter with 80 kHz transducer, plastic housing, polypropylene transducer ELECTRONICS HOUSING Plastic (PBT) NEMA 6 INPUT POWER 12 to 36 VDC SIGNAL OUTPUT... -
Page 43: Configuration Parameter Worksheet
Configuration Parameter Worksheet Par. Page Description Value Par. Page Description Value Application and Engineering Units not used Bar Graph and Measurement Mode not used Calculation Units not used Displayed Values (rounding) not used Range not used Dead Zone not used Far-end Blocking not used not used... - Page 44 No claims for misapplication, labor, direct or consequen- tial damage will be allowed. 5300 Belmont Road • Downers Grove, Illinois 60515-4499 • 630-969-4000 • Fax 630-969-9489 • www.magnetrol.com 145 Jardin Drive, Units 1 & 2 • Concord, Ontario Canada L4K 1X7 • 905-738-9600 • Fax 905-738-1306 Heikensstraat 6 •...