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AMMONIA  User Manual 

AMMONIA_User   9/09            

4

4

 

4.1    4-20mA Output Setpoints 

In this example an ammonia sensor 

is controlling the 4-20mA out current. 

The 

100.0%

 indicates that the ammonia 

is greater than the 20mA setpoint

 

To view or modify the 

20mA Setpoint

 

 press 

ENTER

.  

Key 

ENTER

 @ 

Setpoints

. 

Key 

DOWN

 to 

20mA Setpoint

. 

When the NH3 sensor measures than 

 

1000uS

 the loop current is 

20mA

 

Key 

ENTER

 to modify. 

Key 

UP

 or 

DOWN

 to change the underlined digit. 

Key 

RIGHT 

to move the underline.  

Press 

ENTER

 to save the new 

20mA Setpoint

 . 

or 

EXIT

 to leave unchanged. 

Key 

EXIT

 twice to view the effect of the new setpoint. 

In the example the loop current is now 

15.36mA

. 

71.4%

 of the 

0 ppm

 

to 

20 ppm 

span is 

14.28 ppm

 

Setpoints
Configure

4mA Setpoint
0.0 ppm

4-20mAOutput_D       
20.00mA  100.0%

D

Editing, or Exit
20.0 ppm

20mA Setpoint
20.0 ppm

then

4-20mAOutput_D       
15.42mA  71.4%

D

20mA Setpoint
20.0 ppm

Sensor Setpoint

Sidebar:

  

 

Setpoints: 

Setpoints may be positive or negative numbers. 

The 4mA Setpoint may be greater or less than the 20mA setpoint so that the loop current may 
either increase or decrease as the sensor increases. 

Calculating Loop Current: 

4-20mA Output current (mA) =  4 + 16 x ( Sensor Value  / ( 

20mA Setpoint

 – 

4mA Setpoint

) )

Use the absolute value of the setpoint difference for 

20mA Setpoint

 < 

4mA Setpoint

.

For this page’s example  

15.46mA

 = 4 + (16 ( 14.28 / ( 

20

 -  

0

)))

Содержание Ammonia

Страница 1: ...Ammonia Analyzer Operating Manual ProMinent Fluid Controls Inc 136 Industrial Drive Pittsburgh PA 15275 Phone 412 787 2484 Fax 412 787 0704 www prominent us...

Страница 2: ...ay to Day Operation 1 1 Main Menu Sensors Pumps Solenoids Valves 1 2 Checking Clearing Alarms 2 Sensors Ammonia NH3 pH temperature 4 20mA 2 1 Sensors 2 2 Sensor Calibration 2 3 Sensor Alarms 2 4 Senso...

Страница 3: ...Outputs 5 5 Metric U S Units 5 6 Configurations 5 7 Communications 5 8 System Diagnostic 6 Product Support 6 1 Application and Technical Support 6 2 Specifications E APPENDIX A Isometric Drawing B Di...

Страница 4: ...4 and the corresponding anions In nature ammonia is produced by the decomposition of animal or vegetable material that contains nitrogen Typical areas of application for ammonia sensors TheProMinentam...

Страница 5: ...ple sample preparation makes determination of the ammonia concentration a fast and economical operation that can be applied with high precision over a wide range of concentration Principles of analyze...

Страница 6: ...concentration of ammonium ions can be included in the equilibrium constant K K OH NH3 or OH NH3 3 Applying the Nernst equation thus results in the following dependency E E0 S log NH3 4 E electrode po...

Страница 7: ...ndicated in the following conversion table for various units of concentration mol l ppm as N ppm as NH3 5 x 10 7 7 x 10 3 8 5 x 10 3 10 6 1 4 x 10 2 1 7 x 10 2 10 1 1400 1700 1 14000 17000 Table 1 Con...

Страница 8: ...gh the hydrophobic membrane But volatile amines for instance may affect measurement These include various substances e g methylamine ethylamine and hydrazine Such substances also exhibit an alkaline r...

Страница 9: ...le valve to permit enough flow to allow flow switch to actuate Pressure range at the analyzer inlet 45 psi Pressure at the analyzer outlet if not to drain then it should be lower than inlet pressure W...

Страница 10: ...USB Type B jack and a microcontroller module S1 S2 T Running DC Power Output O P Q R S T A B U V G Power IN 18 VDC A B RS485 4 20mA Red Blk Wht Grn Meter Contact Set Inputs LCD Display Control Module...

Страница 11: ...O R5 NC NO DC P6 A B P7 A B P8 A B P9 A B FREQUENCY CONTROLS 115V 5 Power Relay ON OFF Controls 4 Pump Frequency Controls Line Voltage Select Relay Fuse To Measure Card Power Card Cable to Measure Car...

Страница 12: ...AC Controller Power Power the controller using a dedicated separate breaker in the local lighting distribution panel Do not route the controller AC power in common conduit with variable frequency pump...

Страница 13: ...O P Q R S T A B U V G 4 20mA Red Blk Wht Grn Meter Contact Set Inputs Connecting Meters Flowswitches Upper Measure Card Dry Contact Set Flowswitches Interlocks Seametrics type Turbine Water Meters Con...

Страница 14: ...Analyzer enclosure exposes user to the risk of electrical shock at power line voltages Understand fully the implications of the control setpoints interlocks and alarms that you select Harm to personn...

Страница 15: ...als on the upper Analyzer board G is a temperature sensor Inputs O to V may be individually selected to be digital inputs Terminals for outputs 1 to 5 are located on the lower board They are ON OFF po...

Страница 16: ...s Firefox or Internet Explorer 7 over a 10BaseT Ethernet connection or the internal modem if installed If the LB option is included in your Analyzer the Browser appendix LB has been added to this man...

Страница 17: ...icro server for command control using IE7 and Mozilla s Firefox browsers Logged data is served as an XML file in response to an HTML request Modem The RM controller option adds a 57 600 baud micro mod...

Страница 18: ...For Your Information explanations Here s what we re going to do Startup walks you through analyzer set up step by step We ll start by verifying each sensor First time users Have the analyzer user manu...

Страница 19: ...rature 4 Scroll UP or DOWN to the sensor G Temperature_G display check that it s displaying the approximate temperature 10F FYI Temperature needs to be accurate We re using it to compensate ammonia so...

Страница 20: ...just both High Alarm and Low Alarm Set ammonia alarms 9 Scroll UP or DOWN to the sensor D NH3 Sensor_D display Key ENTER to Alarms and adjust both High Alarm and Low Alarm 24 7 Sites Set Flowswitch Al...

Страница 21: ...to view alarm detail or to scroll the key press log Present value of the pH connected to sensor input C Updates every second Press ENTER to Calibrate view set Alarms Compensation A NH3 sensor is conn...

Страница 22: ...can disable unused sensors pumps or relays to un clutter the display and turn them back ON as site needs change Plug in a new sensor card and the Analyzer auto reconfigures Key EXIT anytime on the Mai...

Страница 23: ...ms display See Sidebar bottom of page ________________________________________________ Press ENTER then DOWN to view active alarms Alarms display until cleared so you ll know there was a problem altho...

Страница 24: ...of 7 3 to 12 0 Calibration is performed with a pH adjusted standard solution The terms ammonia NH3 and free ammonia are used interchangeably in reference to this sensor pH Install vertically tip down...

Страница 25: ...account for the various influences on the measurement There are two ways of making a quantitative measurement of ammonia direct measurement with a multi point calibration the standard addition method...

Страница 26: ...ompletely as possible alkali must be added to the samples with the unknown concentration and the standard solutions just before starting measurement One can for instance proceed as follows 100ml of st...

Страница 27: ...calibrated using standard pH buffer solutions of 7 and 10 for the low and high points respectively The Analyzer supports direct sets of sensor OFFSET GAIN values After the initial two point calibratio...

Страница 28: ...larms Factory Reset Yes NH3 0 5 ppm D and Calibrate Faults Sidebar Sensor Fault The Analyzer verifies that sensor OFFSET or GAIN required to make the sensor read its new value are within the range of...

Страница 29: ...l alarm if the NH3 falls below 0 50 ppm Key ENTER to modify Delay on Alarm prevents nuisance alarms by requiring in this example 5 minutes of fault occur before alarming Set the Delay to zero minutes...

Страница 30: ...move the digit underline Press ENTER to modify or EXIT to leave unchanged In this example we ve increased the High Alarm from 1 60 ppm to 1 90 ppm NH3 1 30 ppm Alarms Configure High Alarm 1 60 ppm D...

Страница 31: ...l Temperature is usually 1 pH NH3 typically 2 Press ENTER to modify Available Compensation varies with sensor type pH may have Temperature compensation Press ENTER to select modify A sensor used for c...

Страница 32: ...me of the NH3 sensor connect to control input D from NH3 to No 1 NH3 NH3 1 30 ppm Configure Diagnostic Description NH3 D Description No 1 NH3 Edit Description and Editing or Exit No 1 NH3 then Sidebar...

Страница 33: ...nged In this example we ve changed the number of digits after the decimal point from 2 to 3 changing the display of NH3 from 1 30 ppm to 1 306 ppm NH3 1 30 ppm Configure Diagnostic Decimal digits 2 D...

Страница 34: ...n use for control used to compensate another sensor or used for inventory or manual entry it will NOT be disabled you ll see this display Key EXIT pH 7 3 Configure Diagnostic Disable Input Yes C Disab...

Страница 35: ...mpensations Sensor Type Compensation User Sets or Selects Ammonia Temperature or None Temperature sensor G Compensation rate in degree 4 20mA Input Temperature or None Temperature sensor B to G Compen...

Страница 36: ...o not modify In this example we selected Thermal Compensation The Analyzer then displayed None as the temperature sensor we scrolled to and keyed ENTER Temperature B Key DOWN to view or modify the deg...

Страница 37: ...the decimal and user set units Thermal Compensation is used with pH and NH3 Gain Multiply is the value required to make the displayed NH3 value match your last calibration Default Gain is the Gain aft...

Страница 38: ...Gain Default Gain When you calibrate an ammonia sensor the Analyzer adjusts the GAIN to make your measured value match the displayed value Offset Default Offset When you calibrate a pH ammonia or temp...

Страница 39: ...ries with a Flowswitch Dry Contact Sets Contact sets connected to the Analyzer must be dry without AC or DC voltage on either of the contact set wires Contact sets cannot be shared between the Analyze...

Страница 40: ...0 minutes to 60 minutes Flowswitch ON 52 6min Alarms Configure ON Time Alarm 1500 0 min No Flow Alarm 1500 0 min S Alarms and No Flow Alarm 60 0 min Editing or Exit 0060 0 min then Sidebar Default ala...

Страница 41: ...vert Configure Diagnostic Invert sense No Invert sense Yes Invert sense Current State OPEN Invert and and RUN STOP OFF U Interlock OFF U Diagnostic and and Sidebar Inverting Sense Contact sets interlo...

Страница 42: ...ime you modify you ll get an extra digit So in this example you ll have to edit twice to get to 3 digits from the default 1 digit See the following Contact Set Control Example Solenoid 1 OFF Setpoints...

Страница 43: ...e ve increased the loop current from 4 00mA to 8 32mA Editing or Exit 27 Manual mode 27 then Setpoints Configure Manual Mode 0 4 20mAOutput_D 4 00mA 0 0 D 4 20mAOutput_D 8 32mA 27 0 D Manual Setpoint...

Страница 44: ...view the effect of the new setpoint In the example the loop current is now 15 36mA 71 4 of the 0 ppm to 20 ppm span is 14 28 ppm Setpoints Configure 4mA Setpoint 0 0 ppm 4 20mAOutput_D 20 00mA 100 0 D...

Страница 45: ...trol the 4 20mA loop current Configure Setpoints 4 20mAOutput_D 4 00mA 0 0 D and Return to Auto Yes Control by No Control Control by NH3 and and or Select Sensor Sidebar Control by Any enabled sensor...

Страница 46: ...N the current is 4 00mA 0 key ENTER and UP or DOWN to select an interlock Configure Setpoints 4 20mAOutput_D 4 00mA 0 0 D and Return to Auto Yes Trim Zero 9 Trim Span 950 Interlocked none Calibrate In...

Страница 47: ...urrent valid passwords you ll view an error message Turn ON Passwords Thu 16 54 10 S N A076X0486 Configure Time Date Password ON Keypad Password Yes Keypad Password No then Editing or Exit 1 Login Yes...

Страница 48: ...ed In this example we changed Operator1 s default password from 1 to OP1 Modify Password Thu 16 54 10 S N A076X0486 Passwords Diagnostic Reset Pswrds Yes Logout Operator1 then Editing or Exit OP1 Edit...

Страница 49: ...u 16 54 10 S N A076X0486 Thu 16 54 10 S N A041X0486 then Sidebar Time Date The Analyzer uses a 24 hour clock where 14 30 is 2 30 PM When you set the Date the Analyzer automatically sets the correct da...

Страница 50: ...tivity Log Keying RIGHT to view the User Ids Time Date stamps View Activity Log or Alarms B 2 Activity Log Clear Alarms Configure5 17 19 23 08 07 and NH3 D Alarms Adjusted NH3 D Alarms Adjusted pH Sen...

Страница 51: ...y the Analyzer for control or sensor compensation cannot be disabled Disabled I O does not display is not logged and does not appear in the selections used to compensate and configure other enabled I...

Страница 52: ...Enable I O Passwords then Enable Inputs 12 unused Thu 16 54 10 S N A076X0486 Enable Inputs SensorInput_K or Enable Inputs FlowSwitch_S Sidebar Enabling Inputs In each Analyzer there are 26 inputs 14 S...

Страница 53: ...ebar Commissioning Select U S or Metric Units when you commission or install the Analyzer Data logging uses the Units setting for the units on logged volumes and temperatures Changing units does not c...

Страница 54: ...The A B Analyzer inputs may be configured for several sensor types Usually this is done once site Key ENTER to view or modify the current A B Sensor type Thu 16 54 10 S N A076X0486 Configure Time Dat...

Страница 55: ...er allow the Analyzer on the site network The MAC address is six 2 digit hexadecimal numbers separated by colons into 3 groups of 4 to fit the LCD screen In this example the MAC address is 00 90 C2 00...

Страница 56: ...nged the IP Address from 10 10 6 106 to 192 168 24 86 Modify IP Address Thu 16 54 10 S N A076X486 Communicate Configure then IP Address 10 10 6 106 IP Address 192 168 24 86 IP Address 192 168 024 106...

Страница 57: ...isplays the time and date of the last Analyzer reset or the time and date of the most recent Load Factory was executed An Admin Password Default has not been modified from AAAA If modified displays Ch...

Страница 58: ...lacement Sensors and Parts Analyzer User and Technical Manuals Click on the NH3 Analyzer icon www aquatrac com Upgrade Kits Controls and sensors can be added to installed Analyzers Upgrade kits includ...

Страница 59: ...urrent 4 Phantom inputs may be used for volume tracking mirroring User configurable as water meters or contact sets S FlowSwitch sample flow Relay Outputs 1 5 5 1 SPST 4 SPDT Fused 6 3A 120VAC or 3 15...

Страница 60: ...ail Notes AC Input 120 or 230 VAC 50 60Hz Switch selectable 5 Relay Fusing 6 3 Amps 120VAC 3 15 Amps 230VAC 5x20mm AC fusing Relays alarm OFF on fusing 120VAC Power Cord 0 to 1 AWG18 NEMA grounded plu...

Страница 61: ...61 AMMONIA User Manual Ammonia Analyzer Assembly...

Страница 62: ...AMMONIA User Manual 62 APPENDIX B Ammonia Analyzer Dimensions...

Страница 63: ...PT 100 sensor 15 1 809128 PT 100 V1 transducer 16 2 305030 6 ft SN 6 to open end cables 17 1 1010511 PHEF sensor 18 725122 2 wire cable 10 ft 19 1 Jumo sensor p n 20 1 Aegis controller with ammonia o...

Страница 64: ...valves needed to flush system for standard method calibration Also it is could be used for taking a calibration sample for photometer calibration 4 Sample inlet with isolation valve 5 Metering valve...

Страница 65: ...n To ensure proper operation and for the initial ammonia sensor calibration prepare two test solutions that differ in their ammonia concentration by at least a factor of 10 The standards should be mad...

Страница 66: ...r 1 0 ppm ammonia add 10 ml For 10 0 ppm ammonia add 100 ml 6 Pipette 2 ml of the 10 mol caustic soda solution through the top of the calibration column 7 Fill the calibration column to the 1000 ml ma...

Страница 67: ...elow 4 Connect the ammonia and pH sensors to the driver field wiring terminals 5 Turn ON the analyzer after installing the OP Driver and the controller will auto configure displaying the installed sen...

Страница 68: ...Thermal compensation for the A conductivity or stand alone feedwater thermal sensor Sensors C D and E F Two sensor card slots Each slot can take a single or dual sensor driver card Plug Play sensor c...

Страница 69: ...b menus The diagnostic browser view auto enables the new sensors and displays their current values No additional hardware is required to connect another water meter flow or level switch Enable the inp...

Страница 70: ...a Do not install sensor cabling in the same conduit as AC power cabling Solution grounds are single conductor AWG18 22 0 25 0 75 mm2 Warning 1 Do not install pH sensors without installing and connecti...

Страница 71: ...election jumpers on power up loading default Offset and Gain on range change Driver Test Header COM V DVM millivolts ID S2 S1 S1 Sensor 1 mV x 1 S2 Sensor 2 mV x 1 ID Card ID Level ID Card ID Level pH...

Страница 72: ...roller AC power 2 IO driver cards may be installed in the Sensors E F slot 3 Turn ON the controller after installing the IO Driver and the controller will auto configure displaying the current output...

Страница 73: ...red unchanged Hardware Calibration COM V DVM DC Volts Verifying Loop Current 15 VDC Controller DC Supply 1 1 2 2 Part IO Dual 4 20mA Output Loop Terminating Resistor Typically 249 ohms 1 Insert a mA m...

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