Milltronics HydroRanger I Instruction Manual
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Milltronics HydroRanger I Instruction Manual

Milltronics HydroRanger I Instruction Manual

Programmable level system
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HYDRORANGER I
PROGRAMMABLE LEVEL SYSTEM
Instruction Manual
PL-399
May 1993
PROCESS MEASUREMENTS
33453990

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Summary of Contents for Milltronics HydroRanger I

  • Page 1 HYDRORANGER I PROGRAMMABLE LEVEL SYSTEM Instruction Manual PL-399 May 1993 PROCESS MEASUREMENTS 33453990...

  • Page 2: Table Of Contents

    Table of Contents GENERAL INFORMATION Important 1 – 1 HydroRanger I 1 – 1 SPECIFICATIONS HydroRanger I 2 – 1 Programmer 2 – 2 Transducer 2 – 2 Alternate Temperature Sensor 2 – 3 Current Output Isolator 2 – 3 Cabling 2 –...
  • Page 3 8 – 4 MAINTENANCE AND SPARE PARTS Maintenance 9 – 1 APPENDICES Sound Velocities 10 – 1 Glossary 10 – 2 Alphabetical Parameter Listing 10 – 4 Illustrations Fig. 1 HydroRanger I Outline and Mounting Diagram Fig. 2 Circuit Board Layout...

  • Page 4: General Information

    The echo is processed by the HydroRanger I and the time at which the ultrasonic pulse hits the level or target is extracted and compared to the time at which it was sent. This time differential is then converted into distance, material level, volume flow or differential level as a basis for display, relay control, analog output and totalizing.

  • Page 5: Hydroranger I

    Ambient Temp. » -20 to 50 °C (range outside of (-5 to 122 °F) HydroRanger I enclosure) OUTPUTS: transducer drive » 41 KHz, 400 V peak pulses of 1 mSec. max. duration at a max. repetition rate of 300 mSec.

  • Page 6: Programmer

    relays » 5 multi-purpose relays (for alarms, pump control, ...) » 1 Form ’C’ SPDT contact per relay, rated 5 A at 220 V AC non-inductive » adjustable deadband NOTE: All relays are certified for use in equipment where the short circuit capacity of the circuits in which they are connected is limited by fuses having ratings not exceeding the rating of the relays.

  • Page 7: Current Output Isolator

    TEFZEL  Tefzel is a fluoropolymer inert to most chemicals. For exposure to specific environments, check with chemical compatibility charts before installing and operating the HydroRanger I in your application.  Tefzel is a registered trade mark of Dupont. PL-399...

  • Page 8: Installation

    0.3 m/3 m x 10 m = 1.0 m from the closest vessel wall. Programmer In order to calibrate the HydroRanger I, a programmer must be set into the recess on the HydroRanger I front cover. It can be removed when operating in the RUN mode.

  • Page 9: Current Output Isolator

    Synchronization In applications where more than one HydroRanger I, up to a maximum of 8, are going to be used or where their transducers will be sharing a common conduit, synchronization is required. When synchronized no HydroRanger I(s) will transmit within 180 mSec.

  • Page 10: Internal Checks

    Internal Checks • If the integral ST-H temperature sensor is not used, jumper ‘J2’ must be set to ‘TS/P65’. • Make sure that voltage stab connector, ‘J9’, is properly set for either 100, 115, 200 or 230 V AC operation. •...

  • Page 11: Start-Up

    The CALIBRATE mode is selected by pressing the RUN/CAL keypad switch. This mode will enable the user to calibrate the HydroRanger I to suit his preferences and to the particular application to which the HydroRanger I is being be applied.

  • Page 12: Programmer Keypad Summary

    Programmer Keypad Summary — Calibrate mode: numeric entries Run mode: 1 = H.TOT; press to view high total, P-2 = 4 or 5 (P-55) press to view level at DLD transducer #1, P-2 =3 2 = L.TOT; press to view low total, P-2 = 4 or 5 (P-54) press to view level at DLD transducter #2, P-2 =3 3 = HEAD;...

  • Page 13: Parameter Entry

    HydroRanger I. The term “key” refers to any keypad switch of the calibrator. 1) Apply power to the HydroRanger I and place the calibrator in its front cover recess will be momentarily displayed and then a distance reading corresponding to the parameter factory settings will appear.
  • Page 14 Parameters are entered as follows: With ’P-#’ displayed, the user may increment or decrement the displayed parameter until the desired parameter is obtained or access the desired parameter directly by pressing the appropriate numbers on the keypad. e.g.’P-1’ is displayed, P-27 is desired. Press and then P-27 will be displayed.
  • Page 15 To set the next parameter: press ↑ the next parameter will be displayed momentarily, followed by a display of its contents. The contents may be changed as previously described. To directly access a parameter: press will be displayed enter desired parameter number press the contents of this parameter are now displayed and may be changed as previously described.

  • Page 16: Display Messages

    Display Messages Display Message Comment cable loss of echo » messages CAbL and LOE CAbL will alternately flash, indicating open, short circuited or reversed transducer connection have entered calibrate » appears after pressing mode “RUN/CAL” switch clear all parameters - »...

  • Page 17: Vfunctional

    FUNCTIONAL Transceiver The HydroRanger I transceiver will transmit a set of long and/or short pulses per measurement. The number and duration of the pulses is dependent upon P-88. A short pulse has a maximum measurement range of 2 m (6.6 ft) from the transducer face and the CABLE LOE message does not work.

  • Page 18: Temperature Compensation

    » optional TS-3 Temperature Sensor must be connected to TB1 - 5/6/7 If the temperature of the sound medium is to remain constant, compensation may be programmed into the HydroRanger I instead of using the remote sensor input by one of the following methods: 1.

  • Page 19: Sound Velocity

    The basis is to physically measure the level (measuring tape or sight glass) and enter this value via P-61. The HydroRanger I then calculates the sound velocity by comparing the entered physical measurement to its own ultrasonic measurement (empty calibration, P-61).

  • Page 20: Agitator Discrimination

    5 consecutive measurements nor will it change unless the echo is farther for at least 2 consecutive measurements. This feature allows the HydroRanger I to remain locked on the true echo, even if there are occasional false echoes due to the agitator blades, electrical noise or crosstalk from other ultrasonic units.

  • Page 21: Relays

    Relays General Five on board multi-purpose relays are provided on each HydroRanger I. Each relay may be assigned to one out of thirteen functions, except relay 5 which has the added scanner function for differential level operation. Each relay has a corresponding status LED which is visible through the front cover.
  • Page 22 pump control: » refer to Section VI, Pump Control Application. Select func- tion option 8, 9 or 10 and press “*” to scroll through the loss of echo defaults. For options 9, pressing “*” will also scroll through the cumulative, ratio or duty/back-up mode of pump operation.
  • Page 23 If the relay status can affect plant operation or personnel safety, it is advis- able to override the relay functions or disconnect the relay wiring during calibration or simulation. KEEP POWER DISCONNECTED AT MAIN BREAKER WHEN HydroRanger I COVER IS OPENED PL-399 5 – 7...
  • Page 24 It should be noted that some relay functions can not be used in certain modes of operation. The following table shows the valid relay functions for the five modes of operation. Relay Function Vs Mode Of Operation Mode of Operation Function Material Space...
  • Page 25 PL-399 5 – 9...

  • Page 26: Analog Output

    Analog Output The HydroRanger I can be programmed to provide an analog output (P-6) of 0 or 4 - 20 mA, proportional or inverse span. The 4 and 20 mA levels can be trimmed slightly via P-97 and P-98 respectively to compensate for any offset between the HydroRanger I and the customer’s equipment.

  • Page 27: Applications

    6 — 28 Standpipes 6 — 44 This section highlights the most common applications for which the HydroRanger I is designed. When calibrating, refer to the application which most suits your requirements. A practical example has been given to further illustrate the calibrating features used for an application.

  • Page 28: Simple Level Application

    5 ft. from the bottom. The maximum filling rate is 1 ft./min. The maximum emptying rate is 1 ft/min, a rate greater than this should set an alarm. In the event of a loss of echo, the HydroRanger I is to go into fail-safe hold after 2 minutes. select: enter option “3”, units in feet...
  • Page 29 P-14 enter option “5”, relay 3 - rate of change function P-15 enter “-1”, relay 3 - alarm ON P-16 enter “-0.9”, relay 3 - alarm OFF P-37 enter “1”, convert display (x1) P-68 enter “1”, max. fill damping 1 ft/min P-69 enter “1”, max.

  • Page 30: Pump Control Application

    The HydroRanger I can be programmed to control up to 5 pumps, each in one of the following ways.

  • Page 31: Example 2

    NOTE: sequential operation can be programmed as either cumulative, duty/back-up or ratio, but not more than one The HydroRanger I will take the last mode entered as the common choice for all sequenced relays. Relays assigned to pump control operation are software set that no two pumps can start up within 10 seconds of each other, a power failure or return to the RUN mode.
  • Page 32 • to start/stop two constant speed pumps - start pump 1 at 1 m level start pump 2 at 2 m level stop both pumps at 0.5 m level • two pumps operate on a cumulative sequential loop, de-energized under loss of echo •...

  • Page 33: Pump Run-On

    The run-on interval must be greater than the run-on duration. e.g. P-29 = 24 and P-30 = 15 After 24 hours from going into the run mode, the HydroRanger I enters the second run-on interval allowing only one pump run-on cycle of 15 seconds, at the first time the lead pump turns off.

  • Page 34: Pump Totalizer Application

    When the pump(s) is OFF, the HydroRanger I estimates the volume of the inflow or discharge by recording the rate at which the liquid level changes. When the pump(s) is...
  • Page 35 If it is wished to momentarily view an alternate reading while in the RUN mode and P-39 ≠ 0, press the desired calibrator key (3 - HEAD and 4 - FLOW are not applicable to the pumped volume totaling) e.g. - normal reading is high total, P-39 = 1 - to momentarily view low total, press ####...

  • Page 36: Example 3

    Example 3 Further to example 2 it is required that the volume pumped be totalized. A daily flow total of 1,200 cubic meters is expected and a contact closure is required every 10 cu. m. The full level of the well is equal to 42 cu. m. The following parameters should be set.

  • Page 37: Volume Application

    A = 0.75 m L = 5 m The maximum fill/draw rate is 0.35 cu. m/min. In the event of a loss of echo, the HydroRanger I is to go into fail-safe high after 30 sec. select: enter option “1”, units in meters advance to: enter option “1”, material level...
  • Page 38 enter “3”, span (inside diameter of tank) enter “.5”, near blanking distance, 3.5 m - 3.0 m = 0.5 m enter “1”, display max. 1 digit after decimal P-34 enter option “7”, tank shape for volumetric conversion P-35 enter “.75”, tank dimension A P-36 enter “5”, tank dimension L P-37...
  • Page 39 Custom Design Tanks Where the tank design does not match one of the eight common tank shapes, P-34 may be programmed for level versus volume characterization. Characterization is achieved by entering the level and corresponding volume for the elevations where there is a change in the tank profile. Where curves are involved, the more breakpoints that are defined, the more accurate will be the volume measurement.
  • Page 40 advance to: enter option "1", material level enter "6.5", empty distance to transducer enter "6", span enter ".5" near blanking distance P-34 enter option "9" universal level vs. volume press display will show or enter ALT. DISP. ---- ENTER 0.000 ↑...
  • Page 41 20°C. Refer back to Temperature or Sound Velocity, Section V, for details on compensating for such circumstances. If it is noted that the HydroRanger I reading is consistently off by a constant amount as compared to the physical reading, this may be compensated for by P-62. This measurement offset might occur when P-3 or P-4 does not exactly match the tank dimensions referenced for volume conversion.
  • Page 42 (refer to Figure 7), MEAS press the HydroRanger I will take a measurement and display the level in the units selected, regardless that percent, volume or convert display are used. Press “MEAS” at least 5 times and insure that a stable reading is being obtained enter the “physical measurement”.

  • Page 43: Differential Level Application

    In order to use the HydroRanger I as a differential level detector, TB-1 must be wired as in Figure 3 and both transducers must be installed at the same level.

  • Page 44: Example 5

    20 mA level has been arbitrarily set to correspond to a 24" differential (span). In the event of a loss of echo, the HydroRanger I should go into fail-safe high after 5 minutes. select: enter option “4”, units in inches...

  • Page 45: Ocm Application

    0.01 to 0.17% per celsius degree over the operating range (P-3). Flow readings are calculated by the HydroRanger I as a function of the head under the transducer, installed upstream from the primary measuring device (P-40). The flows are then accumulated in the arbitrary volume units chosen per the time units of P-41 in an 8 digit totalizer.
  • Page 46 The HydroRanger I can be programmed to ignore low head, i.e. flows for heads less than that set in P-48 will not be accumulated into the totalizer. The low head cutoff is measured in % of maximum head (P-45).
  • Page 47 The mA output responds to the head or flow (P-50). In the event of fail-safe due to loss of echo, the mA output will respond as programmed by P-6 and P-74. When calibrating the HydroRanger I for the OCM function, the empty distance to transducer (P-3) may be considered and entered as the distance from the transducer face to the 0 head or no flow reference level.

  • Page 48: Example 6A

    • alarms at 10% overflow (approx. = 1.8 ft) and 0 head • in the event of loss of echo, the HydroRanger I is to go into low alarm after 45 sec. • head to read to 1 decimal place •...
  • Page 49 4 hyphens must appear in the display press at least 5 times to insure that the HydroRanger I will obtain a stable MEAS ultrasonic measurement. The resultant reading will be the apparent head with respect to the estimated P-3 = 3.33 ft.
  • Page 50 P-50 enter option “2”, mA output responds to flow P-59 enter “1”, time sampler control closure once every hour P-74 enter option “2”, fail-safe low P-75 enter option “.75”, fail-safe timer, 45 sec. PL-399 6 – 34...
  • Page 51 SINGLE EXPONENTIAL, P-40 = 1 Weirs transducer location near blanking (P-5) min. 0.3 m (11.81") crest profile 3 to 4 Applicable Weir Profiles v-notch or suppressed cipolleti or sutro or triangular rectangular trapezoidal proportional Non-Applicable Weir Profiles contracted compound Poebing approximate rectangular exponential...
  • Page 52 SINGLE EXPONENTIAL, P-40 = 1 (cont’d) FLUMES Parshall Flume • 2/3 C sized by throat width • set on solid foundation • general free flow equation is Q = KH plan where Q = flow rate transducer K = constant H = head x = exponent •...
  • Page 53 SINGLE EXPONENTIAL, P-40 = 1 (cont’d) FLUMES (cont’d) Leopold Lagco (as manufactured by Leopold Co., Inc.) • designed to be installed directly into pipelines and manholes • Leopold Lagco may be classed transducer as a rectangular Palmer-Bowlus plan converging flume throat diverging •...
  • Page 54 SINGLE EXPONENTIAL , P-40 = 1(cont’d) FLUMES (cont’d) Cuthroat Flume • similar to Parshall flume except that the floor is flat bottomed and throat has no virtual length. • refer to manufacturer’s specifications for flow equation and plan point of head measurement. Flows through the following flumes may be measured using the universal head vs.
  • Page 55 PALMER-BOWLUS FLUME, P-40 = 1 (as manufactured by Warminster Fiberglass or Plasti-Fab) transducer D/2 point of measurement plan head side front D = pipe or sewer diameter • sized by pipe diameter • flume relief is trapezoidal • designed to install directly into pipelines and manholes •...
  • Page 56 H FLUMES, P-40 = 3 (as developed by the U.S. Department of Agriculture, Soil Conservation Service) transducer point of measurement plan side front • sized by max. depth of flume • approach is preferably rectangular, matching width and depth for distance 3 to 5 times the depth of the flume.

  • Page 57: Other

    OTHER, P-40 = 4 or 5 Where the primary measuring device does not fit one of the three other categories, P-40 may be programmed for one or two head versus flow characterizations. - P-40 = 4 : curved - P-40 = 5 : linear Head Head P-40 = 4, curved...

  • Page 58: Example 6B

    Example 6b The application is to measure the flow across a 4 ft. rectangular weir with end contractions. The flow is characterized by the following formula: where cfs = flow in cu ft/sec cfs = 3.33 (L - 0.2H) H L = length of crest H = head select:...
  • Page 59 F-11 ---- ALT. DISP. F-11 ALT. DISP. ---- ENTER 0.0000 ↑ ---- 2.156 2.156 ENTER 2.156 ↑ ---- 6.005 6.005 ENTER 6.005 ↑ F-10 ---- 51.12 51.12 ENTER 51.12 58.83 58.83 ENTER 58.83 ALT. DISP. F-12 P-40 P-41 enter option "4", flowrate time units - per day enter option :"58.83", maximum flowrate in ft 3 /sec P-46 P-49...

  • Page 60: Applications With Standpipes

    Applications with Standpipes In many solids and liquid applications, access to the vessel must be made via a standpipe. In such cases, Milltronics can provide flange mounted transducers that will readily mate to the standpipe (refer to Figure 4). The maximum standpipe length that can be used without additional near blanking (P-5 not greater than 0.3 m) is 200 mm (8").

  • Page 61: Parameter Description

    SECTION VII PARAMETER DESCRIPTION NOTE: • (F) indicates the parameter’s factory setting, where applicable. For reference only - factory set values may change with software revisions. • (V) indicates that parameter can be viewed only, not entered. security This parameter can be used to lock out the calibrator such that the content of parameters P-1 through P-99 can not be changed.
  • Page 62 mode of measurement enter 1 = liquid level 2 = space (F) 3 = differential level 4 = volume totalizer (pump totalizer) 5 = OCM (open channel measurement) empty distance to transducer enter desired amount (F=10.00 m) span - distance between full (high) and empty (low) levels - max.
  • Page 63 P-11 relay 2 function Refer to Section V, Relays. enter desired option (F=0) P-12/13 relay 2 - ON/OFF setpoints enter level in units as selected in P-1 or °C (F=----) P-14 relay 3 function Refer to Section V, Relays. enter desired option (F=0) P-15/16 relay 3 - ON/OFF setpoints enter level in units as selected in P-1 or °C (F=----)
  • Page 64 P-25 relay 2 pump log * P-26 relay 3 pump log * P-27 relay 4 pump log * P-28 relay 5 pump log * * these are multi-level parameters related to the respective relays when assigned to a pump control function. Access to the levels is made by pressing e.g.
  • Page 65 The initial interval begins upon return to the run mode or resumption of power to the HydroRanger I. Subsequent intervals begin at the end of the previous interval. Intervals end after the time entered has expired or when the power or run mode is interrupted.

  • Page 66: Parameters

    Parameters P-34 through P-39 are used for volume and display conversion. P-34 tank shape for volumetric conversion enter 0 = non volume - linear level measurement (F) 1 = flat bottom 2 = conic or pyramidic bottom 3 = parabolic bottom 4 = half sphere bottom 5 = flat slope bottom 6 = horizontal cylinder, flat ends...
  • Page 67 P-36 tank dimension L horizontal length of tank shape 7 excluding parabolic ends (not required for other tank shapes). enter “dimension L”, in units selected per P-1 (F=0.000) P-37 convert display parameter value is the factor by which the measurement is to be multiplied by before being displayed.
  • Page 68 Parameters P-40 through P-50 are used specifically for OCM applications. Refer to section VI. P-40 primary measuring device enter option 1 = exponential (F) 2 = Palmer-Bowlus 3 = H-flume 4 = universal head vs flow (refer to Section VI, Volume Application) P-41 flowrate time units enter option 1 = per second...
  • Page 69 ENTER press , the HydroRanger I will then calculate the correct zero reference level, the offset will be automatically entered into P-62. P-48 OCM low head cutoff flows for head below this level will not be totalled.
  • Page 70 P-51 OCM simulation press , display will show previous flow DISP enter head in units programmed, display will show head ENTER press , display will show corresponding flow Parameters P-52 through P-59 are used specifically for OCM and pump totalizer applications. Refer to Section VI. P-52 totalizer display factor totalizer display of flow or volume pumped is factored by a power of 10...
  • Page 71 P-55 high total this parameter will display the 4 highest digits of the 8 digit totalizer used in pump totalizer or OCM applications. The parameter will also allow the display to be reset to any value. (F=0000) P-56 remote totalizer contact control a momentary closure of the remote totalizer contact occurs once each time the entered flow or pumped volume has passed enter option -3 = 0.001...
  • Page 72 MEAS press , the HydroRanger I will take a measurement and display the level in the linear units chosen regardless if percent, volume or convert display is used. Press “MEAS” at least 5 times and insure that a stable reading is being obtained...
  • Page 73 P-63 sound velocity at 20°C can be used to enter the known velocity, at 20°C, of sound in a particular gas or vapour or to view the resultant velocity of an empty calibration (P-61), normalized to 20°C. (F=344.1) the units of velocity are assumed to be: meters/sec if P-1= 1 (meters) 2 (centimeters) feet/sec if...
  • Page 74 Parameters P-68 through P-75 are used to stabilize the reading. These are general purpose parameters, suitable for all applications. P-68 fill damping is the maximum rate at which the display reading and analog output will change under filling conditions. The damping rate is measured in P-1 units per minute and has a range of 0.001 to 9999.
  • Page 75 0 = OFF 1 = ON (F) P-74 fail-safe mode in the event of a loss of echo, the HydroRanger I will flash ’LOE’ and go into one of the following fail-safe modes after the timer (P-75) expires enter 1 = high...
  • Page 76 During simulation, relay LED’s, alarm relays and mA output are all enabled to allow full response of the HydroRanger I. Pump relays are maintained in a de-energized state throughout simulation (unless P-0 = – 1), however the corresponding relay LED’s will respond.
  • Page 77 P-76 reading this is one of the optional displays selected in the display options parameter, P-39, and may also be obtained by pressing ∗ This reading incorporates both the measurement and display offsets. MODE READING (P-2) (linear, %, volume) material material space space...
  • Page 78 (F=5) Typical usage; during filling of vessel, material intersects beam path. Instead of displaying wrong level, increasing threshold to a value above that of the echo confidence (P-80) will force the HydroRanger I into fail-safe. PL-399 7 – 18...
  • Page 79 P-83 echo strength (V) displays the absolute strength of the selected echo in dB above 1 uV rms P-84 noise average and peak ambient noise, in dB above 1 uV rms ambient noise includes acoustical and electrical noise being picked up by the transducer/receiver circuit when the transmit/receive cycles have been disabled during the mode...
  • Page 80 - press any key to stop P-92 mA output test HydroRanger I will output to terminal board, TB1, the displayed mA value (also by pressing ). Range is approximately 0 to 20. Upon entering the CAL mode, the prior mA out value will be displayed.
  • Page 81 ENTER press , hyphens will flash for 5 seconds or less and then the HydroRanger I goes into the run mode. Should the test fail, the HydroRanger I will not go back into the run mode. P-97 trim for 4 mA PL-399 7 –...
  • Page 82 when this parameter is selected, the mA output goes to 4 mA. The display however, will show a typical value of 200. By increasing or decreasing this value, the mA output can be slightly varied to make external equipment read 4 mA. This parameter is not reset by P-99. e.g.: “P-97"...

  • Page 83: Troubleshooting

    For example, echo analysis parameters 79-84 or echo processing parameters 85-87 can be viewed or changed while monitoring results on both the HydroRanger I display and on the oscilloscope.
  • Page 84 The processed echo display (P-79) can be made to show not only the processed echo profile, but also the: • echo marker • window • TVT curve or auxiliary window Typical scope settings for viewing the processed echo are: • gain - 1 v/div •...
  • Page 85 TVT curve window echo profile echo marker (near blanking) (far end blanking) Scope display LCD display (P-79) Window Marker Curve - TVT Profile PL-399 8 — 3...

  • Page 86: Troubleshooting Guide

    Troubleshooting guide The following is a list of operating symptoms, their probable cause and action to be taken. SYMPTOM CAUSE ACTION Loss Of Echo (LOE) display will flash open circuit - check transducer wiring. Refer CAbL/LOE, neon L1 will to fig. 2, 3 & 4 flash but no pulsing is felt on transducer face defective transducer...
  • Page 87 LOE, neon L1 will flash, polarity incorrect pulsing is felt on transducer face Reading Does Not HydroRanger I process- - check transducer aim. Refer to Change, But Level Does ing wrong echo, i.e. ves- transducer installation page sel wall, structural mem- 3 —...
  • Page 88 SYMPTOM CAUSE ACTION Measurement Consis- measurement offset - refer to P-60 & 62 & e.g. 4 tently Off By Constant Amount Reading Error Progres- temp. compensation - insure that J2 is properly set, sively Worsens With refer to fig. 2 Distance sound velocity compen- - P-61 &...
  • Page 89 SYMPTOM CAUSE ACTION Reading Response Slow damping too high - increase P-68 & 69 agitator on - turn off P-73 fuzz filter on - turn off P-72 Reads correctly but detecting close range - increase blanking occasionally reads high echo or ringing - increase short measurement when vessel is not full threshold, P-81...

  • Page 90: Maintenance And Spare Parts

    The enclosure and circuit boards should be cleaned if necessary, but only when the power is disconnected at the main breaker and using a vacuum cleaner and a clean, dry paint brush. Check all electrical contacts in the HydroRanger I enclosure as well as those in junction boxes, for corrosion and arcing.

  • Page 91: Sound Velocities

    APPENDIX I SOUND VELOCITIES GASES (0° C) m/sec ft/sec air, dry 1086 ammonia 1362 argon 1010 carbon dioxide carbon monoxide 1109 chlorine deuterium 2920 ethane (10° C) 1010 ethylene 1040 helium 3166 hydrogen 1284 4213 hydrogen bromide hydrogen chloride hrydrogen iodide hydrogen sulfide illuminating (coal gas) 1486...

  • Page 92: Glossary

    APPENDIX II GLOSSARY Aeration: - air gap between nappe and weir. Beam angle: - angle between the opposing one-half power limits (-3dB) of the sound beam Blanking: - zone in which received echoes are ignored. Crest: - the edge (sharp-crested weir) or surface (broad crested weir) over which the flow passes.
  • Page 93 Ringing: - the inherent nature of the transducer to con- tinue vibrating after the transmit pulse has ceased. Secondary measuring device: - any instrument for measuring the head or flow related to the primary measuring device. Stilling well: - a well separate from but adjacent to the pri- mary measuring device and interconnected by a small duct to provide an ideal point of measurement.

  • Page 94: Alphabetical Parameter Listing

    APPENDIX III ALPHABETICAL PARAMETER LISTING PARAMETER PARAMETER pump 5, hours P-28 agitator discrimination P-73 pump, run-on, duration P-30 air temperature P-65 pump, run-on, interval P-29 air temperature, maximum P-66 range extension P-87 air temperature, minimum P-67 algorithms P-85 rate display P-70 rate filter P-71...

  • Page 95: Fig

    HYDRORANGER OUTLINE AND MOUNTING 160 mm 97 mm (6.3") (3.8") lid screws 131 mm 6 places 82 mm (5.1") (3.2") 240 mm (9.5") programmer 228 mm (9") lid, clear polycarbonate suitable location for mounting holes conduit entrances (accessed under lid CSA enclosure 4 4.3 mm (0.17") dia.

  • Page 96: Fig. 2

    CIRCUIT BOARD LAYOUT OPTIONAL ISOLATOR DAUGHTERBOARD 10 to 18 V DC operation 12 V DC model MOTHERBOARD 18 to 36 V DC operation 24 V DC model FIG. 2 PL-399 11 – 2...

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