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DANIEL 2234 Manual

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MODEL 2234
DIGITAL
FLOW COMPUTER
__________________________________________
DANIEL INDUSTRIES, INC.
HOUSTON, TEXAS
Part Number: 3-9000-333
Revision A
APRIL 1993

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  • Page 1 MODEL 2234 DIGITAL FLOW COMPUTER __________________________________________ DANIEL INDUSTRIES, INC. HOUSTON, TEXAS Part Number: 3-9000-333 Revision A APRIL 1993...
  • Page 3 MODEL 2234 DIGITAL FLOW COMPUTER NOTICE DANIEL INDUSTRIES, INC. ("DANIEL") SHALL NOT BE LIABLE FOR TECHNICAL OR EDITORIAL ERRORS IN THIS MANUAL OR OMISSIONS FROM THIS MANUAL. DANIEL MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A...
  • Page 4 In no event, whether as a result of breach of warranty or alleged negligence, shall Daniel be liable for special or consequential damages, including, but not limited to, loss of profits or revenue;...

  • Page 5: Table Of Contents

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ SECTION 1 INTRODUCTION ........
  • Page 6 BOARDS ....... . . 2.5.4 WIRING THE MODEL 2234 ....
  • Page 7 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ SECTION 3 OPERATION ........
  • Page 8 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 3.6.4 COMPUTER CALCULATED VARIABLES ..3.6.5 OUTPUT SCALING ......
  • Page 9 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ 3.8.10 PRINT FORMAT ......FREQUENCY DENSITOMETER OPTION ..
  • Page 10 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER SECTION 4 CALIBRATION PROCEDURES ..... . . GENERAL ........
  • Page 11 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ SECTION 5 MAINTENANCE ........
  • Page 12 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER This page intentionally left blank. TABLE OF CONTENTS...

  • Page 13: Introduction

    This manual covers software revisions for Daniel Model 2234 flow computers. The Model 2234 is a mass flow computer for use with orifice meters. Additionally, the density of vapor phase ethylene is computed per API-2565.

  • Page 14: Changes

    Only the upstream expansion factor will be computed. A keyboard entry for isentropic exponent is included. The Model 2234 operator interface consists of a 24-key control keyboard for entering data and functions and an eight character alpha-numeric display. The operator interface permits the operator to enter, inspect, and change measurement parameters;...

  • Page 15: Hardware

    Model 2234-XX3. That is, there will be 4k of RAM on board #1 and the software will reside in the 2716 EPROM. Existing computers originally built as Model 2234-XX1 will require an upgrade of board #1 to include full RAM capability and board #2 will of necessity be replaced.

  • Page 16: Specifications

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER SPECIFICATIONS 1.2.1 INPUTS Pressure, Densitometer and Temperature Number of Inputs - · One - Static Pressure, scaled in PSIA · Five - Differential Pressure, scaled in inches of water. · One - Density, scaled in LBF3.

  • Page 17: Outputs

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Frequency Densitometer Number of Inputs - One Type Input - DC coupled for nominal frequency signal as indicated. · Solartron device - Square wave 0 to -6 V peak (Requires external capacitive level shifting.
  • Page 18 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 4 - 20 mA Rate - Mass Range - 4 to 20 mA signal scalable by keyboard entry to represent from 0.00 to N pounds per hour. Absolute maximum range is 4 to 21 mA.
  • Page 19 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Volume Totals, Contact Closure - Mass Rating - Form A contact, 30 V DC or AC. 0.75 Amp, 10 VA resistive, 3.5 VA inductive. ________________________________________________________ NOTE: For inductive loads, the user is responsible for providing resistive/capacitive suppression for the contact.
  • Page 20 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Direction Sense Contacts (2) (See option diagram, Figure 2-1). Rating - Form A contacts, 30 V DC or AC, 0.75 Amp, 10 VA resistive, 3.5 VA inductive. ________________________________________________________ NOTE: For inductive loads, it is the responsibility of the user to provide arc suppression for the contact.
  • Page 21 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Alarm Contact Closure Rating - Form B contact, 30 VDC or AC, 0.75 Amp, 10 VA resistive, 3.5 VA inductive. _______________________________________________________ NOTE: For inductive loads, the user is responsible for providing resistive/capacitive suppression for the contact.

  • Page 22: Displays

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 1.2.3 DISPLAYS (Refer to Figure 1-1) Eight-digit Alpha/Numeric Sixteen-segment LED. Full 64-character ASCII Code. Six-digit mechanical counter without reset for Station Mass totals Status indicators Red LED - indicates a current error or alarm condition. This LED is ON if either the Watchdog Timer has timed out or another condition exists.
  • Page 23 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Figure 1-1. Model 2234 Display SECTION 1...

  • Page 24: Controls

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 1.2.4 CONTROLS Enable/Disable Switch (S1) - Located on PC Board No.1 ENABLE position - Permits the operator to enter or change critical constants or scaling. This does not stop computer calculation. Green LED indicator on front panel.
  • Page 25 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Read (READ) - Entering a one- two- or three-digit function numerical code and pressing READ displays the data being used or calculated by the computer (see Table 3-1). Fixed (FXD) - Pressing FXD displays data stored in the computer by the operator (e.g., pressure, temperature, gravity,...

  • Page 26: Accuracy

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Up Arrow (↑) - Pressing ↑ results in the following actions by the computer: Reading data - ↑ causes the computer to step back to the previous data code. For example, if the data corresponding to Read Code 2 is being viewed, pressing ↑...

  • Page 27: Other

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ 1.2.6 OTHER Power · Voltage options - 115 Vac ±10%, 47 to 63 Hz. 230 Vac ±10%, 47 to 63 Hz. 21 Vdc to 29 Vdc. · Power required - (without transducers, current rate outputs and mechanical counter) 10 VA typical, for basic instrument.
  • Page 28 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER This page intentionally left blank. SECTION 1...

  • Page 29: Installation And Initial Startup

    DAMAGE IN SHIPMENT If the Model 2234 has been damaged in shipment, first file a claim with the carrier. Next, complete a full report of the damage (its nature and extent) and forward immediately to the factory for further instructions.

  • Page 30: Shipping Instructions

    INSTALLATION 2.5.1 DETERMINING OPTIONS The model number and option code for the Model 2234 are located on the rear of the instrument when removed from the housing. To determine the options of the instrument, compare the model number and option codes to those in Figure 2-1.
  • Page 31 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Figure 2-1. Model Number and Option Codes SECTION 2...

  • Page 32: Case Mounting

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 2.5.2 CASE MOUNTING The Model 2234 Flow Computer is designed primarily to be mounted in an industrial panel cutout. The case is held in place in the panel by jack bars provided with the computer. The panel mounting bezel is provided to cover unfilled space around the computer’s front panel after installation and may or may...

  • Page 33: Wiring The Model 2234

    The use of external transient protectors should be considered in areas of high lightning incidence. Transient protectors specifically for Daniel instruments are available from Daniel and, when properly installed, provide excellent protection of the computer from very large transients.

  • Page 34: Controlling External Inductive Circuits

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 2.5.5 CONTROLLING EXTERNAL INDUCTIVE CIRCUITS Externally located inductive circuits may be controlled from the Model 2234 via contact closure outputs. However, an external arc suppression network must be used to prevent radiation of high frequency energy into the circuitry, causing false operation of the computer.
  • Page 35 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ 2.5.5.2 A-C POWERED CONTACT CLOSURE CIRCUITS The diode type arc suppression cannot be used when the inductive circuits are powered from an A-C source. Instead, use a series connected resistor and capacitor to suppress the arc. The values of the components of this series network must be selected per supply voltages used, contact ratings, and load characteristics.

  • Page 36: Startup

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER STARTUP 2.6.1 GENERAL Upon initial startup, the computer prompts the operator to define and enter the basic operating parameter information necessary for a specific application. These parameters include the system configuration; scaling of pressure, temperature and differential pressure inputs, etc.
  • Page 37 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Figure 2-2. Model 2234 Keyboard SECTION 2...

  • Page 38: Startup Prompting Sequence

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Apply power to the computer to confirm if the Startup Prompting Sequence has been previously completed. READY indicates that the Startup Prompting Sequence has already been completed and the computer is ready for operation.
  • Page 39 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ CNFIG - Enter the code number for the appropriate system configuration from the following table. RANGE ER (Range Error) is displayed for any other entry. Configuration Number Transducer Number Meter Tubes Type (S)* S,S,S...
  • Page 40 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER DENTYP - Enter the appropriate code number for the desired density to be used. RANGE ER is displayed for any other entry. DENTYP Density Code Number Used Analog or no densitometer API 2565 calculated density Frequency densitometer, Solartron type.
  • Page 41 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ DZ - LBF3 - Enter the zero value for measured density in pounds per cubic foot. PFS - PSIA - Enter the full scale value for measured static pressure in PSIA. PZ - PSIA - Enter the zero value for measured static pressure in PSIA.
  • Page 42 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER - Enter line (n) cutoff in inches of water (InH2O) for each line used. - Enter the numerical value of the integer for the Totalizing Factor of the line (n) indicated by the display. Acceptable values are - 9 to +9.
  • Page 43 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ - Enter the Plate Expansion Coefficient for the respective plates (PA1, PA2, etc.). - Enter Plate Measurement Temperature (DEGF) for the respective plates (PT1, PT2, etc.). - Enter the Pipe Expansion Coefficient for the respective lines (LA1, LA2, etc.).
  • Page 44 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Key on "0" to note and to clear alarms and the alarm memory list. Press and release the CMD key. Note the alarm number on the computer display. Press the CLR key. The alarm is cleared by the computer and the next alarm number is displayed.
  • Page 45 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 2-1a. Data Entry Example/Guide Display Display Example Actual Reference Definition Measurement Data to Data from Table 2-2 Entered A. CNFIG Enter system 2 ENTR ________ para 2.6.2 (A) configuration code number B. DENTYP...
  • Page 46 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Table 2-1a. Data Entry Example/Guide (Continued) Display Display Example Actual Reference Definition Measurement Data to Data from Table 2-2 Entered H. ENTER PFS Enter full scale 1000 ENTR ________ para 2.6.2 (H) for measured...
  • Page 47 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 2-1a. Data Entry Example/Guide (Continued) Display Display Example Actual Reference Definition Measurement Data to Data from Table 2-2 Entered P. ENTER HF1 Enter full scale 100 ENTR ________ para 2.6.2 (P) measured differential...
  • Page 48 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Table 2-1a. Data Entry Example/Guide (Continued) Display Display Example Actual Reference Definition Measurement Data to Data from Table 2-2 Entered V. ENTER LA1 Enter pipe 6.2↑ -6 ENTER ________ para 2.6.2 (V) expansion coefficient for line 1 W.
  • Page 49 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 2-1a. Data Entry Example/Guide (Continued) Display Display Example Actual Reference Definition Measurement Data to Data from Table 2-2 Entered S. ENTER TL2 Enter pressure 1 ENTR ________ para 2.6.2 (S) tap location for...
  • Page 50 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Table 2-1a. Data Entry Example/Guide (Continued) Display Display Example Actual Reference Definition Measurement Data to Data from Table 2-2 Entered W. ENTER LT2 Pipe 60.0 ENTER _______ para 2.6.2 (W) measurement temperature for line 2 X.
  • Page 51 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 2-1b. Data Entry Example/Guide Read Mnemonic Definition Data to be Paragraph Code Entered Reference PRINT LOCATION __________ 3.8.9 PRINT LOCATION __________ 3.8.9 PRINT LOCATION __________ 3.8.9 PRINT LOCATION _________ 3.8.3 PRINT LOCATION __________ 3.9.9...
  • Page 52 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Table 2-1b. Data Entry Example/Guide (Continued) Read Mnemonic Definition Data to be Paragraph Code Entered Reference PRINT LOCATION __________ 3.8.9 PRINT LOCATION __________ 3.8.9 PRINT LOCATION __________ 3.8.9 PRINT LOCATION _________ 3.8.3 PRINT LOCATION __________ 3.9.9...
  • Page 53 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 2-2. Serial Output Option Read Mnemonic Definition Data to be Paragraph Code Entered Reference PRINT DELAY __________ 3.8.2 Enter 02 to 99 (x100 ms) DATE (Day of Year) __________ 3.8.3 Enter 001-366 CLOCK (in Hours-Minutes) __________ 3.8.4...
  • Page 54 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Table 2-3. Frequency Densitometer Option Read Mnemonic Definition Data to be Paragraph Code Entered Reference Densitometer Scaling Constant __________ 3.9.3 Densitometer Scaling Constant __________ 3.9.3 Densitometer Scaling Constant __________ 3.9.3 Densitometer Temperature __________ 3.9.3...

  • Page 55: Supplementary Startup Instructions

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ 2.6.3 SUPPLEMENTARY STARTUP INSTRUCTIONS This subsection is intended as a checklist of possible additional parameter entries or modifications that may be required before placing the computer into service. Where appropriate, references are made to more detailed explanations and information contained in Section 3 of this manual.
  • Page 56 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER and the relay contacts to between 4.6 and 46.3 days, based on their rated specifications. It is recommended that the maximum long term pulse rate be limited to one per second. This will yield a rated life upwards of 2315 days for the electromechanical counter, and upwards of 115 to 1157 days for the relay contacts.
  • Page 57 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Note that the Line and Station Volume Totalizing Factors are the same (10 in the examples above). This does not have to be the case. Different applications may require a Station Totalizing Factor different from the Line Totalizing Factor in order to obtain the best resolution.
  • Page 58 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Orifice Measurement of Liquids: The Model 2234 Mass Flow Computer can be used without modification to measure liquids. The changes and uses of operator- entered parameters are described in paragraph 3.5. 2.6.3.3 ENABLING THE "DISPLAY ALWAYS ON" FUNCTION The operator can cause the computer display to remain ON if desired.

  • Page 59: Example Of Startup Sequence

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ 2.6.4 EXAMPLE OF STARTUP SEQUENCE Assume that the user’s application is as follows: Number of parallel meter tubes: two, each with single dp transducer. Flange taps are used, and static pressure is monitored upstream from the orifice.
  • Page 60 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER The related startup sequence is as follows: Apply power to the instrument. Set the "enable/disable" switch to "enable", and confirm that the green "enabled" lamp is illuminated. Simultaneously press CMD and CLR to initialize the instrument.
  • Page 61 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 2-4. Typical Startup Sequence Display Note 1. CNFIG 2 ENTR 2. DENTYP 2 ENTR 3. IE 2 ENTR 4. ENTER TFS 150 ENTR 5. ENTER TZ 50 ENTR 6. ENTER DFS 20 ENTR 7.
  • Page 62 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Assuming maximum flow in each line, flowing temperature of 65 F, flowing pressure of 800 PSIA, and density of 8.26 LBF3, the maximum rate is calculated. A full scale rate of 205,000 pounds per hour is equivalent to 57 pounds per second.
  • Page 63 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 2-5. Error Code Diagnostic Chart Error Code Possible Cause Check Solution 1. Densitometer not 1. Check VAR value 1. Place read code 0 Analog used. of read code 0 in FXD mode. Enter density (DEN-LBF3).
  • Page 64 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Table 2-5. Error Code Diagnostic Chart (Continued) Error Code Possible Cause Check Solution 1. Temperature 1. Check VAR value 1. Place read code 1 Temperature transducer not used. of read code 1 in FXD mode. Enter transducer (flowing temperature).
  • Page 65 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 2-5. Error Code Diagnostic Chart (Continued) Error Code Possible Cause Check Solution 1. Pressure transducer 1. Check VAR value 1. Place read code 2 Static not used. of read code 2. in FXD mode. Enter...
  • Page 66 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Table 2-5. Error Code Diagnostic Chart (Continued) Error Code Possible Cause Check Solution 1. Pressure transducer 1. Check VAR value 1. Enter new Line 1 not used for line 1. of read code 261...
  • Page 67 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 2-5. Error Code Diagnostic Chart (Continued) Error Code Possible Cause Check Solution 1. Pressure transducer 1. Check VAR value 1. Enter new Line 3 not used for line 3. of read code 263...
  • Page 68 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Table 2-5. Error Code Diagnostic Chart (Continued) Error Code Possible Cause Check Solution 1. Pressure transducer 1. Check VAR value 1. Enter new Line 5 not used for line 5. of read code 265...
  • Page 69 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 2-5. Error Code Diagnostic Chart (Continued) Error Code Possible Cause Check Solution 2. Incorrect or 1. Check that pressure 1. Check transducer Pressure out malfunctioning is between 200 and calibration. of range for pressure probe being 2099.9 PSIA, read...
  • Page 70 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Table 2-5. Error Code Diagnostic Chart (Continued) Error Code Possible Cause Check Solution 1. The full scale mass 1. Check full scale 1. Enter correct full Excessive rate is too high. mass rate (read code...
  • Page 71 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 2-5. Error Code Diagnostic Chart (Continued) Error Code Possible Cause Check Solution 1. Calculated density 1. Check values for 1. Enter correct full Calculated greater than density R.C.O. and read code scale value per frequency full scale.
  • Page 72 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Table 2-5. Error Code Diagnostic Chart (Continued) Error Code Possible Cause Check Solution 1. Pressure transducer 1. Check VAR value 1. Enter new Line 1 not used for line 1. of read code 261...
  • Page 73 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 2-5. Error Code Diagnostic Chart (Continued) Error Code Possible Cause Check Solution 1. Pressure transducer 1. Check VAR value 1. Enter new Line 3 not used for line 3. of read code 263...
  • Page 74 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Table 2-5. Error Code Diagnostic Chart (Continued) Error Code Possible Cause Check Solution 1. Pressure transducer 1. Check VAR value 1. Enter new Line 5 not used for line 5. of read code 265...
  • Page 75 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 2-5. Error Code Diagnostic Chart (Continued) Error Code Possible Cause Check Solution 1. Possibly 24 volt 1. Check voltage on 1. Adjust 24-volt five volt circuit is out of PC Board 1 with a...
  • Page 76 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER This page intentionally left blank. SECTION 2...

  • Page 77: Operation

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ OPERATION GENERAL This section contains basic calculations performed by the Model 2234 computer, an operational overview, a definition of the types of methods the operator may use to control operating capabilities of the computer, instructions for switching from operator-entered values to computer-calculated values and vice versa;...
  • Page 78 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER All instrument calculated factors are computed in accordance the 1991 version of MPMS, Chapter 14.3 (ANSI/API 2530, AGA-3). _______________________________________________________ NOTE: error is less than 0.01% when process inputs are fixed (operator entered) values. ________________________________________________________...

  • Page 79: Operational Overview

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ OPERATIONAL OVERVIEW The computer uses a prompting sequence during initial startup. The prompting sequence assists the operator with the entering of essential measurement parameters which the computer requires in determining flow rates and flow totals. Details of the startup procedures are located in paragraph 2.6 of this manual.
  • Page 80 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER The operator may request the computer to perform three types of action. (NOTE: The "enable/disable" switch must be "enabled" and the green "enable" lamp on the front panel must be ON. Control the display (ON all the time/ON for one minute);...
  • Page 81 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 3-1. Read Codes The following table lists all read codes, the display literal, mode capability (fixed/variable), units display, a description and fixed entry limits as applicable for the new version of software. Code Literal...
  • Page 82 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Table 3-1. Read Codes (Continued) Code Literal Mode Units Description Fixed Limits FXD -- Day of the Year 1 to 366 FXD -- Time Of Day 0 to 23:59 FXD HOUR Daily Print Time...
  • Page 83 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 3-2. Command Code Listing Command Title Action Reference Code Paragraph Display Causes the consecutive display of errors 3.7.2 Errors by Error Code Number Display Causes the display to be ON 3.7.1 Always ON...
  • Page 84 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Table 3-2. Command Code Listing (Continued) Command Title Action Reference Code Paragraph Display A/D Causes the display of analog input 3.7.2 Channel 0 in voltages in hexadecimal form for bench Hexadecimal calibration through Display A/D Causes the display of analog input 3.7.2...
  • Page 85 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 3-3. Error Codes Code No. Description Analog density transducer out of range Temperature transducer out of range Static pressure transducer out of range Line 1 differential pressure transducer under range Line 2 differential pressure transducer under range...
  • Page 86 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Table 3-3. Error Codes (Continued) Code No. Description Line 2 differential pressure over range Line 3 differential pressure over range Line 4 differential pressure over range Line 5 differential pressure over range Overflow counts exceed 65,000...

  • Page 87: Basic Keyboard/Display Functions

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ BASIC KEYBOARD/DISPLAY FUNCTIONS 3.4.1 SELECTING TEMPORARY OR PERMANENT DISPLAY The display of the computer mnemonics and the operator-entered values are temporary during startup. A "power-save" feature is used by the computer to cause the display to remain on for a minute and then be replaced by a blinking asterisk(*).

  • Page 88: Functions Of Specific Keys

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 3.4.3 FUNCTIONS OF SPECIFIC KEYS The front panel keyboard is arranged in two groups of 12 keys each. numerical keys, the period (.) and the dash or minus (-) on the left are used to enter data values or issue instructions to the computer through the Read/Command Codes.
  • Page 89 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Variable (VAR) - Pressing VAR displays data from a transducer or a computer calculation. An asterisk displayed with the data identifier indicates that the computer is not currently using the data for its computations.

  • Page 90: Indicators

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 3.4.4 INDICATORS Indicators other than the keyboard and LED display consist of three status indicators and an optional six-digit electromechanical counter on the front panel. The three colored status indicators show the status condition of the total system.

  • Page 91: Data Input And Overriding Controls

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ DATA INPUT AND OVERRIDING CONTROLS The values of the parameters used by the Model 2234 are derived from two sources. Line parameter measurements being monitored by the computer, or calculations performed by the computer, are called variable or VAR values since they change as line or calculation conditions change.

  • Page 92: Entering An Operator - Selected Value

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 3.5.1 ENTERING AN OPERATOR - SELECTED VALUE Set the "enable/disable" switch on PC Board No.1 to the "enable" position in order to enter parameter values. Return the switch to the "disable" position after making entries to prevent unauthorized or accidental data entries.
  • Page 93 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Next, assume that the temperature for the line is known to be approximately 78 degrees (the VAR 56.3 degree temperature reading verifies that the transducer output is inaccurate) so a 78 degree temperature will need to be entered into the computer as a FXD value for the computer to use in its calculations until the defective transducer can be returned to service.
  • Page 94 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Switch the value of the temperature from VAR to FXD. Press ENTR again. Display ENTR (Pressed) TF FXD ENTR (Released) OK (Valid Entry) then DEGF (Units of Measure) then 78.0 The value being displayed (VAR or FXD) is entered into the computer calculations by pressing ENTR.
  • Page 95 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Next, assume that the transducer is repaired or replaced and is ready to be returned to use. Switch the temperature from the active FXD value to the inactive VAR value. Enter the appropriate Read Code (1 in this example) to view the value being used.

  • Page 96: Data Access

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER DATA ACCESS As stated in the Operational Overview part of this section of the manual, the operator may access data in the computer for one of two type actions: To display a specific measurement parameter, flow rate or flow totals;...

  • Page 97: Transducer Scaling

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ 3.6.1 TRANSDUCER SCALING Read Codes for transducer scaling will display the full scale and zero values that are used by the computer to scale measured input signals from the respective transducers. Transducer scaling is displayed only as FXD values. The values may be changed by the operator by keying in the new values and pressing ENTR.

  • Page 98: Measurements

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Static Pressure Transducer Full Scale (PFS) - Read Code 9 Static Pressure Transducer Zero (PZ) - Read Code 10 Full scale and zero pressure values, used by the computer to scale input signals from the pressure transducer, are displayed by using Read Codes 9 and 10.
  • Page 99 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Temperature (TF) - Read Code 1 The measured temperature value, used by the computer to calculate flow rates and flow totals, is displayed by using Read Code 1. The display is in degrees Fahrenheit. FXD values between -50 and 250 degrees Fahrenheit are acceptable.

  • Page 100: Operator-Entered Data Constants

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 3.6.3 OPERATOR-ENTERED DATA CONSTANTS Read Codes for operator-entered data constants display the values of those data which generally remain constant. Data such as orifice diameter, line ID, and line tap location are displayed as FXD values. The values may be changed by the operator by keying in new values and pressing ENTR.

  • Page 101: Computer Calculated Variables

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ 3.6.4 COMPUTER CALCULATED VARIABLES Read Codes for the computer calculated variables cause the display of the values computed from various other calculations. All computer calculated variables are displayed as VAR values. Mass Rate Full Scale (MFS) - Read Code 11 The full scale mass rate, related to the analog mass rate output, may be displayed by using Read Code 11.
  • Page 102 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Line Extension (EXn) - Read Code 27n The extension factor for a selected line number (n), used by the computer to calculate the Reynolds factor for the line, may be displayed by using Read Code 27n.
  • Page 103 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Mass Rate (RATE Ln) - Read Code 80n Read Code 80n is used to display the mass flow rate as measured through the line selected where n = 1, 2, 3, 4, or, 5 through the station (n = 0). Flow rate is displayed as a VAR value.
  • Page 104 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Mass Total (TOTAL Ln) - Read Code 90n Read Code 90n displays mass flow totals through the selected line number (n), where n = line 1, 2, 3, 4, or 5 through the station (n = 0). Flow totals are displayed as a VAR value.

  • Page 105: Output Scaling

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ 3.6.5 OUTPUT SCALING Read Codes are used to display the analog output scaling for full scale and zero density; the totalizing factor for mass; and the totalizing factor for line mass. All output scaling is displayed only as FXD values. The operator may change the scaling rates and totalizing factors by keying in the values and pressing ENTR.

  • Page 106: Over-Rides

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Line Totalizing Factor (LKn) - Read Code 22n A power of ten multiplier (the totalizing factor) that is being applied to the total of the selected line (n), is displayed with the use of Read Code 22n.

  • Page 107: Computer Action Requests

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ COMPUTER ACTION REQUESTS As stated in the Operational Overview portion of Section 3 of this manual, the operator may cause the computer to perform one of four types of action: Controlling the display (ON all the time/ON for one minute);...

  • Page 108: Operational Actions

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 3.7.1 OPERATIONAL ACTIONS Command Codes pertaining to the computer operation are used to change or control the computer operation after initial startup. Display Always ON - Command Code 1 Display Timeout - Command Code 2 Command Code 1 causes the display to be ON continuously.
  • Page 109 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Use API-2565 - Command Code 7 Command Code 7 instructs the computer to use density as calculated from temperature and pressure in the rate and totalization calculation. computer will acknowledge this command code if the "enable/disable" switch is in the "enable"...

  • Page 110: Diagnostic Aid Actions

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 3.7.2 DIAGNOSTIC AID ACTIONS Diagnostic Aid Actions enable the operator to visually monitor or verify suspected problem areas. All of the Diagnostic Aids, except Command Code 0, are used only in bench calibrations and tests.
  • Page 111 Field Calibration. Memory Diagnostics for the Model 2234 Computer The Model 2234 contains two types of memory circuits. RAM (Random Access Memory) integrated circuit (IC) chips are used to store the calculated rates and totals, as well as other data which changes value.
  • Page 112 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER The Model 2234 performs diagnostic checks on both the RAM and the PROM memories to insure the reliability of the calculations performed and the safe storage of the resulting data. If a memory failure occurs, the system halts all flow calculations because their reliability would be uncertain.
  • Page 113 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 3-4. Address vs. IC Chip (DE-8992 series) Addressed Type of On PC I C Number Displayed Memory Board Number none PROM U12 (Failure causes watchdog) 0800 PROM 1000 PROM 1800 PROM 2000 PROM...
  • Page 114 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Table 3-4A. Address vs. IC Chip (DE-10421 series) Addressed Type of On PC I C Number Displayed Memory Board Number none PROM U12A (Failure causes watchdog) 0800 PROM 1000 PROM U13A 1800 PROM 2000...

  • Page 115: Parameter Display Actions

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ 3.7.3 PARAMETER DISPLAY ACTIONS The parameter display Command Codes used to display the values of parameters set into the computer during initial startup. Display Configuration - Command Code 5 The type configuration entered by the operator during initial startup may be displayed with the use of Command Code 5.
  • Page 116 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER The configuration type can be changed only by erasing all startup parameters from memory and repeating the Startup Prompting Sequence as described in paragraph 2.6. Erase the startup parameters by simultaneously pressing CMD and CLR.

  • Page 117: Clearing Actions

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ 3.7.4 CLEARING ACTIONS Mass Total Reset - Command Code 80n The mass flow totals related to the selected line number (n) where n = 1, 2, 3, 4, or 5, or to the station (n=0), are reset by the use of Command Code 80n.

  • Page 118: Serial Output For Printing

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER SERIAL OUTPUT FOR PRINTING The Serial Output Option allows the operator to output the process information stored in computer memory to an off-line printer in serial form. Access to all print functions is provided by Read Codes 44 through 82.
  • Page 119 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Table 3-5. Serial Output Read Read Code Read Code Reference Description Paragraph Mnemonic Identifier 44-DLY Print delay 3.8.2 45-DTE Date - day of year 3.8.3 46-TIM Real time clock- hours/minutes 3.8.4 47-DPT Data print time-hour of day 3.8.5...

  • Page 120: Read Code Usage

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 3.8.1 READ CODE USAGE Read Codes (Tables 3-1 and 3-5) allow the operator to display or enter measurement parameters to be printed. The internal "enable/disable" switch must be set to the "enable" position before entering new values.

  • Page 121: Real Time Clock (Tim) - Read Code

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ 3.8.4 REAL TIME CLOCK (TIM) - READ CODE 46 The hour and minute entries are displayed by using Read Code 46. Hour entries always precede minute entries and must be separated by a "-" operator key entry.

  • Page 122: Identification (Id) - Read Code

    Due to printer speed limitations, the Model 2234 computer will output one character every 20 msec regardless of the baud rate selected. The baud rate selected for the Model 2234 must match the designed baud rate of the printer. This information is located on the serial number tag of the printer.

  • Page 123: Print Format

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ 3.8.10 PRINT FORMAT Forty columns of printed data are segmented into four fields separated by blanks. The four fields correspond to the computer display of data. If all 32 table entries are "NOT USED", only Line No.1 (ID, date and time) is printed.

  • Page 124: Frequency Densitometer Option

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER FREQUENCY DENSITOMETER OPTION The frequency densitometer option enables the computer to determine line density from a frequency output type of densitometer. The densitometer signal frequency is determined by the computer periodically reading the densitometer input counter and storing the total of accumulated pulses.
  • Page 125 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Where: the indicated (uncorrected) density at line conditions in gm/cc. the densitometer output frequency in cycles/second x 10 are operator-entered densitometer scaling constants (Read Codes 30, 31 and 32 respectively) Where: the density corrected for temperature effects on the densitometer in gm/cc.
  • Page 126 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Where: DLC = density corrected for pressure and temperature effects (Read Code 0) densitometer correction factor (Defaults to 1.0 upon computer cold start) as previously defined measured pressure (Read Code 2) pressure coefficient (read Code 36)

  • Page 127: Prompting Sequence

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ 3.9.2 PROMPTING SEQUENCE The Startup Prompting Sequence contains only one prompting entry (DENTYP) for the Frequency Densitometer option. DENTYP appears immediately following CNFIG, the first entry in the sequence. Acceptable entries for DENTYP are:...

  • Page 128: Constants

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 3.9.3 CONSTANTS The operator must enter 11 constants from the front panel keyboard. These entries are not prompted by the computer display. (See Table 3-6.) * Ten constants are defined as fixed-only system constants and will default to zero upon computer cold start unless otherwise noted.

  • Page 129: Examples

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ 3.9.4 EXAMPLES 3.9.4.1 SOLARTRON DENSITOMETERS From the densitometer calibration certificate the following is determined: Units of calibration are: KG/M Calibration temperature is: 20 Calibration pressure is: 1 BAR Coefficient data is: -1112.63 -0.729462 -4.08188 E-03 -4.9619 E-05...
  • Page 130 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Step 1 Compute, using a hand calculator, the equivalent coefficients for density units of gm/cc, temperature units of F and pressure units of PSI from the following relationships: = K0 ÷ 1000 = K1 ÷ 1000 = K2 ÷...
  • Page 131 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ * If no values are given on the calibration certificate for K20B or K21B, A4 and A5 are set equal to zero. In this case K20 = K20A and K21 = K21A. Step 2 Enter the results obtained using the appropriate Read Codes.
  • Page 132 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 3.9.4.2 BARTON DENSITOMETERS From the densitometer calibration certificate the following is determined: Units of calibration are: gm/cc Calibration temperature is: 70 Calibration pressure is: 14.7 PSI Coefficient data is: A = 7.4145 B = 0.6917 Equation from data sheet is: Pressure coefficient = +0.0014 GM/cc/1000 PSI...
  • Page 133 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Step 1 Compute the equivalent coefficients using the following relationships: DTC = Temperature coefficient ÷ 100 Step 2 Enter the results obtained using the appropriate Read Codes. For the sample coefficients given, and assuming 0.5 gm/cc density, the proper entries would be as follows: -0.6917...
  • Page 134 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Exercise care to insure applicable units consistency when using the above or similar relationships. The constants A0, A1, A2 must be entered so as to yield density in gm/cc. 3.9.4.3 AGAR DENSITOMETERS From the densitometer calibration certificate, the following is determined.
  • Page 135 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Step 1 Compute, using a hand calculator, the equivalent coefficients for density units of gm/cc and temperature units of F from the following relationships: (K-2)/62.42778 SECTION 3...
  • Page 136 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Step 2 Enter the results obtained using the appropriate Read Codes. For the data given, the proper entries would be as follows: -1.24618↑-1 Read Code 30 -4.09069↑-4 Read Code 31 5.37292↑-6 Read Code 32 DTC = -4.5704↑...

  • Page 137: Command Codes

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ 3.9.5 COMMAND CODES Command Code 5 (Display Configuration) displays the type of densitometer and the type of densitometer input being used, as selected by the operator during the Start-up Prompting Sequence. The display is formatted as follows:...

  • Page 138: Calculations - Each Meter

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 3.10 CALCULATIONS - EACH METER Equations/calculation methods contained herein are based upon API Manual of Petroleum Measurement Standards, Chapter 14, Section 3, Part 4. In the event of discrepancies the API document shall have precedence.
  • Page 139 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Pipe Diameter D = ID [1 + LA (TF - LT)] where, Corrected pipe diameter, inches at TF Measured pipe diameter, inches at LT Pipe coefficient of thermal expansion Fluid temperature, degrees F Pipe measurement temperature, degrees F...
  • Page 140 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Upstream Static Pressure P = PF, if TLn is equal to 1 P = (HW/27.707) + PF, if TLn is equal to 2 where, Upstream Static Pressure, PSIA TLn = Tap location; 1 = upstream,...
  • Page 141 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Velocity of Approach Factor EV = 1/(1-B where, Velocity of Approach Factor Beta as computed in C. above Mass Flow Factor FM = N (Pi/4) EV d where, the Mass Flow Factor 323.279 [Reference Table 4-5, MPMS 14.3.4] the Number Pi the Velocity of approach factor per F.
  • Page 142 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Orifice Flow Coefficients 0.5961 0.0049 0.0291 0.0433 -0.229 0.0712 0.003 -0.1145 -0.2300 0.000511 -0.0116 0.021 -0.5200 -0.1400 1.0/D, where D is from step B. above / (1 - B), where B is from step C. above -8.5L1...
  • Page 143 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Viscosity of Ethylene MU = 0.01+ 0.000068* (DEN) where: MU is the viscosity in centipoise at TF DEN is the flowing density in pounds-mass/cubic foot Iteration Flow Factor where: orifice diameter pipe diameter expansion factor...
  • Page 144 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Orifice Coefficient Given from H. and J. above. first orifice coefficient constant second orifice coefficient constant third orifice coefficient constant fourth orifice coefficient constant fifth orifice coefficient constant iteration flow factor Constants: = value of X where low Reynolds number switch occurs, 1.142 139 337 256 165 (Reynolds number of 3502.2)
  • Page 145 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Calculate the correlation value of C , at the assumed flow, X, and the derivative of the correlation with respect to the assumed value of C , using the following formulae: If (X < X ) then 0.35...
  • Page 146 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER , δC Calculate the amount to change the guess for C , using the following formula: Update the guess for C according to: - δC Repeat Steps 2, 3 and 4 until the absolute value of δCd is less than 0.000005.

  • Page 147: Startup Prompting

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Calculation of Mass Flow Rate where: mass flow rate in LB mass flow factor from G. above expansion factor from E. above orifice coefficient from K. above density from API-2565, densitometer or operator entry, Lb measured differential pressure, InH 3.10.1 STARTUP PROMPTING...
  • Page 148 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Display Display Definition 1. CNFIG Enter System Configuration Code Number (1-11) 2. DENTYP Enter Densitometer Type (1,2,3,4 or 5) 3. ENTER IE Enter Isentropic Exponent 4. ENTER TFS Enter Full scale for Measured Temperature in degrees F 5.

  • Page 149: Calibration Procedures

    PCB in your equipment. 4.2.1 DETERMINE THE INSTRUMENT OPTIONS Compare the dash number located on the computer with the option diagram in Figure 2-1 to determine the option for which this Model 2234 Computer has been configured. 4.2.2 REQUIRED TEST EQUIPMENT Bench calibration of the Model 2234 Computer is conducted with a minimum amount of test equipment;...

  • Page 150: Procedure

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 4.2.3 PROCEDURE The Model 2234 Computer is manufactured with two versions of printed circuit board (PCB) No.1. Each version has different designations and/or locations for the test points and trimpot(s). Figure 4-1 shows the original version (DE-8992) and Figure 4-2 shows the more recent design (DE-10421).
  • Page 151 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Figure 4-1. Original Version of PC Board No.1 (DE-8992 series) Figure 4-2. More Recent Version of PC Board No.1 (DE-10421 series) SECTION 4...
  • Page 152 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER As a general procedure, turn off the power, pull out the board enough to attach digital voltmeter leads with the miniature clips, replace the board carefully and then re-apply power. Make sure nothing is shorted before applying power.

  • Page 153: Field Calibration

    Attach a digital voltmeter to terminals 46 (+) and 49 (-) on the rear of the Model 2234. Adjust span trimpot R23 (R4) on P.C. Board No.1 to a reading of +10.000 volts. Enter 0.0 into Read Code 18. Adjust zero trimpot R24 (R5) on PC Board No.1 to a reading of 0.00 volts.

  • Page 154: Reference Voltage Calibration

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 4.3.2 REFERENCE VOLTAGE CALIBRATION Attach the positive lead to TP2 (TP2) and the negative lead to TP3 (TP1). The voltmeter should read +5.000 volts ±0.04%. This is a check; if the voltage is not within tolerance, repeat the power supply adjustments.
  • Page 155 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Figure 4-3. Power Supply Voltage Adjustment Locations SECTION 4...
  • Page 156 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER Figure 4-4. PC Board No.2, Adjustment Locations SECTION 4...
  • Page 157 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Adjust gross span trimpot R47 on PC Board No.2 until the meter reads 20.000 mA. See Figure 4-4. Enter 0.0 into Read Code 18 (zero scale volume in LBHR). Adjust zero trimpot R54 on PC Board No.2 until the meter reads 4.000 mA.

  • Page 158: Density Current Calibration

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER 4.3.4 DENSITY CURRENT CALIBRATION Temporarily disconnect the wire at terminal 38. Connect your probes between terminal 38 and the wire you disconnected with the digital voltmeter set to the ammeter function. You will check the current between terminal 38 and the wire you disconnected.

  • Page 159: Maintenance

    Series computer performs to specifications, maintenance is not required. RECOMMENDED SPARE PARTS Daniel recommends only modular spare parts (e,g, plug-in boards, sub-assemblies, etc.). Recommended spare parts for the Model 2230 Series computer are listed in the Spare Parts list in Appendix B. To insure receiving the correct option of each spare part, order the part by its part number.

  • Page 160: Customer Service Report

    __________________________ MODEL 2234 DIGITAL FLOW COMPUTER CUSTOMER SERVICE REPORT A Customer Service Report is located in the back of this manual. It is to be used when returning the Model 2230 Series computer to the factory for repairs. Completely fill out this report and include it with the unit in the shipping container.

  • Page 161: Appendix A: Read Code Listing

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ APPENDIX A: READ CODE LISTING Read Mnemonic Title Feature Code Term Limits Par. Measured Displays Measured Density over 0.1 3.6.2 Density values in LBF3 (VAR or FXD) Temperature Displays Measured -50 to 3.6.2 Temperature in degrees...
  • Page 162 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER READ CODE LISTING (Continued) Read Mnemonic Title Feature Code Term Limits Par. Static Displays Static Pressure 3.6.1 Pressure Transducer at Full Scale in Transducer PSIA (FXD only) Full Scale Static Displays Static Pressure 3.6.1...
  • Page 163 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ READ CODE LISTING (Continued) Read Mnemonic Title Feature Code Term Limits Par. Station Displays Station Totalizing -9 to +9 3.6.5 Totalizing Factor (FXD only) Factor Total Hourly Displays current Total Hourly Real 3.6.4 Mass Rate...
  • Page 164 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER READ CODE LISTING (Continued) Read Mnemonic Title Feature Code Term Limits Par. Densitometer Displays Densitometer Any real 3.9.3 Calibration Calibration Temperature in number Temperature DEGF (FXD only) *Densito- Displays Densitometer Any real 3.9.3 meter Pressure...
  • Page 165 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ READ CODE LISTING (Continued) 44 thru 82 Serial Output for Printing Option Read Mnemonic Title Feature Code Term Limits Par. Print Delay Print Output delays for the 02 to 99 3.8.2 printer carriage return in 100 ms.
  • Page 166 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER READ CODE LISTING (Continued) Read Mnemonic Title Feature Code Term Limits Par. Print Displays data stored in Print Read 3.8.9 Location 01 Location 01 (FXD only) Code, Blank Line (-), Used Print Displays data stored in Print Read 3.8.9...
  • Page 167 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ READ CODE LISTING (Continued) Read Mnemonic Title Feature Code Term Limits Par. Line Hourly Displays Hourly Flow Rate Real 3.6.4 Flow Rate for a selected line (n) in number LBHR (VAR or FXD) greater than 0.0...
  • Page 168 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER READ CODE LISTING (Continued) Read Mnemonic Title Feature Code Term Limits Par. Line Displays Extension Factor for 3.6.4 Extension a selected line (n) as HWn Factor x PF (VAR or FXD) Line n Displays Discharge...
  • Page 169 MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ READ CODE LISTING (Continued) Read Mnemonic Title Feature Code Term Limits Par. Line n Pipe Displays Line n Pipe Measure Typically 3.10 Measure Temperature (FXD) >0.0 Tempera- ture Line n Beta Displays Line n Beta Factor >0.0...
  • Page 170 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER This page intentionally left blank. APPENDIX A...

  • Page 171: Appendix B: Drawings And Parts List

    MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ DRAWINGS AND PARTS LIST Spare Parts List SP-8969-4 Field Wiring Diagram DE-9144 Lightning Protection DE-8940 Dimensions CE-9117 APPENDIX B...
  • Page 172 __________________________ MODEL 2234 DIGITAL FLOW COMPUTER This page intentionally left blank. APPENDIX B...
  • Page 181 WARRANTY CLAIM REQUIREMENTS To make a warranty claim, you, the Purchaser, must: Provide Daniel with proof of the Date of Purchase and proof of the Date of Shipment of the product in question. Return the product to Daniel within twelve (12) months of the date of original shipment of the product, or within eighteen (18) months of the date of original shipment of the product to destinations outside of the United States.
  • Page 183 DANIEL INDUSTRIES, INC. CUSTOMER PROBLEM REPORT FOR FASTEST SERVICE, COMPLETE THIS FORM, AND RETURN IT ALONG WITH THE AFFECTED EQUIPMENT TO CUSTOMER SERVICE AT THE ADDRESS INDICATED BELOW. COMPANY NAME:____________________________________________________________________________ TECHNICAL CONTACT:_________________________________ PHONE:______________________________ REPAIR P. O. #:_____________________________ IF WARRANTY, UNIT S/N:_________________________...
  • Page 186 Electronics Products. Daniel Industries, Inc. reserves the right to make changes to any of its products or services at any time without prior notification in order to improve that product or service and to supply...

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