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CGS-240

RH Systems, LLC

1225 W Houston Ave.,

Gilbert AZ, 85233

Manual

Содержание CGS-240

Страница 1: ...CGS 240 RH Systems LLC 1225 W Houston Ave Gilbert AZ 85233 Manual...

Страница 2: ...dity Equations 10 Installation 13 3 1 Facility Requirements 13 3 2 Utility Connections 14 3 3 Initial Preparation 17 Operation 22 4 1 Introduction to Software 23 4 2 Connection Window 24 4 3 Enter Set...

Страница 3: ...nts 75 Troubleshoot Maintenance 76 7 1 Preventative Maintenance 76 7 2 Troubleshooting 82 Illustrated Parts Breakdown 90 8 1 Parts List 90 8 2 Illustrations 97 Drawings 119 RHS Plateau Software 134 10...

Страница 4: ...urator was a small cylinder containing water and filled with fragments of pumice or stream washed gravel through which the gas could be bubbled under pressure This device was developed primarily for t...

Страница 5: ...ratures The saturator and chamber share a common fluid bath temperature and are ideally in thermal equilibrium with each other In this case where saturator temperature Ts and chamber temperature Tc ar...

Страница 6: ...nciple where Ts Tc and Ps Pc Here the temperature of saturation Ts and temperature of the chamber Tc may be controlled independently of each other if desired By allowing the saturator and chamber to o...

Страница 7: ...he formula T k T k e i i i ln exp 5 1 4 0 2 where e is the saturation vapor pressure in Pascals over ice in the pure phase T is the temperature in Kelvin and k0 5 8666426 103 k1 2 232870244 101 k2 1 3...

Страница 8: ...n temperature range and are given as for water 223 15 K to 273 15 K 50 C to 0 C 273 15 K to 373 15 K 0 C to 100 C a0 5 5898101 10 2 a0 1 6302041 10 1 a1 6 7140389 10 4 a1 1 8071570 10 3 a2 2 7492721 1...

Страница 9: ...d must be solved by iteration For ease of computation the following inverse equation is provided This equation is generally used to find the dew point or frost point temperature when the vapor pressur...

Страница 10: ...bsolute saturation pressure c is the enhancement factor at chamber temperature and pressure s is the enhancement factor at saturator temperature and pressure ec is the saturation vapor pressure at cha...

Страница 11: ...re Tf chamber pressure Pc and Equation 4 for ice to compute the dew or frost point enhancement factor d e Converge to the proper frost point temperature Tf by repeating steps b through d several times...

Страница 12: ...unit volume of humidified gas and is computed with the formula d M R T f e P P v w c s s c s g m3 13 where R is the molar gas constant 8 31472 2 4 7 SPECIFIC HUMIDITY Specific humidity q is defined a...

Страница 13: ...cle size Dry A pressure dew point of 20 C or lower is recommended Liquid water should not be present in the air supply line if possible as this could overload the capacity of the humidity generator s...

Страница 14: ...e Plug the two connectors into the system at the rear panel one into the upper cabinet receptacle and one into the lower cabinet receptacle then plug the other end into your 200 240VAC power source Tu...

Страница 15: ...re is achieved The current tank pressure is indicated on the tank mounted mechanical pressure gauge The air compressor will cycle between its lower cut in and upper cut out factory pressure settings E...

Страница 16: ...sh to connect fitting using a standard outer diameter flexible hose such as PTFE PFA PUR Press the tube fully into the fitting to lock it into place Turn on your external air source and power up the C...

Страница 17: ...ation will be present You may if desired connect a NPT fitting and tube to direct this discharge away from the system to a small drip pan or a floor drain A drip pan volume of 0 5 to 1 liter is genera...

Страница 18: ...allons of clear propylene glycol You ll need to supply approximately 2 5 gallons of distilled water to mix with it Total cooling loop system capacity is approximately 4 gallons 16 liters Remove the to...

Страница 19: ...ump and Saturator Pump buttons to turn them on Turning on the pumps causes the fluid to flow through the system As the level in the fill port tank begins to drop add water to maintain it within the ta...

Страница 20: ...the 5 gallon 20 liter plastic reservoir located in the lower cabinet Using DISTILLED WATER ONLY fill this reservoir to at least half full approximately 2 5 gallons or more This distilled water reservo...

Страница 21: ...the syringe and allow the blue suction tube to drop to the bottom of the reservoir below the water level The end of the tube and the stainless steel nut will rest on the bottom of the tank Reinstall...

Страница 22: ...provided they have a serial data port For those instruments with a serial data port a customized protocol description in the form of a json file is used to make the data connection These json files a...

Страница 23: ...loads and automatically presents the software splash screen followed by the Connection window The splash screen indicates the software version number Connection Window Select Units Open the Connectio...

Страница 24: ...automatic search for attached instruments To connect 1 If the instrument you want to connect with is not listed ensure it is plugged into a USB port via a USB 232 converter as needed then press the S...

Страница 25: ...following window is typical of a CGS 240 Undock this window away from main screen Open Secondary data coefficients menu Open Mini Terminal Chamber Light On Off Chamber Fan On Off Figure 4 3 Run Stop...

Страница 26: ...MODE AND INITIATING GENERATE The CGS 240 can control in one of several different humidity control modes which automatically picks suitable parameters for saturation temperature and saturation pressur...

Страница 27: ...ow to indicate the new setpoint is being sent 5 Once the setpoint is sent to the generator and accepted the highlight disappears A new value is then read from the CGS 240 and will be displayed Saturat...

Страница 28: ...d control mode 4 4 2 RUN STOP THE HUMIDITY GENERATION PROCESS Start the generator by pressing the Run button It toggles to a Stop button which you may press to stop the generating process 4 4 3 CHAMBE...

Страница 29: ...a combination of data from any connected instruments Each parameter may be shown in a different color and may be quickly and easily shown or hidden during analysis Graphs respond to normal pinch and...

Страница 30: ...ended storing system and instrument data the entire time In addition if other instruments are also connected to RHS Control such as RHS MBW Chilled Mirror Hygrometers they too may be sent commands as...

Страница 31: ...ed via one of the four serial ports left on CGS 240 or via a USB 232 converter connected to one of the USB ports right side of the CGS 240 and a properly written description file json file the Connect...

Страница 32: ...ogging is defaulted to ON upon startup of RHS Control Each connected instrument has a separate log file with common time stamps for easy post run analysis using Excel or other programs of your prefere...

Страница 33: ...of the on screen keyboard It also allows for a light and dark mode theme light mode is shown throughout this manual Log Configuration allows for changes to the log file data formatting options It also...

Страница 34: ...ile seal for gas tightness An integrated fan with control provides internal air circulation and ensures uniformity and stability throughout the chamber The chamber design features a false wall for a f...

Страница 35: ...d chamber door uses heavy duty hinges a recessed latching mechanism a built in light and built in heaters for the door frame and window The liquid jacketing of the door and window aid significantly in...

Страница 36: ...iquid such as 3M Flourinert FC 770 is highly recommended Use of silicone oil is also suitable NOTE DO NOT USE WATER as this may cause an internal short within the probe if the probe is accidentally su...

Страница 37: ...2 0 Exponent of a2 coefficient should be no larger E 5 E 4 E 3 are out of range a3 0 Exponent of a3 coefficient should be no larger than E 6 E 5 E 4 are out of range Values that exceed the above range...

Страница 38: ...r s manual for the pressure controller standard or internal procedures connect the pressure standard to the pressure sensor The transducer should be mounted vertically NOTE The transducer port is a 1...

Страница 39: ...240 Manual 6 15 2021 Page 39 of 148 5 Open Cal Mode by selecting Utilities from the drop down menu 6 Click the Calibration button By default the Cal Mode window opens with the Temperature sensors Ts...

Страница 40: ...mate pressures for a duration of at least 2 to 5 minutes per point For the PL Low Pressure Sensor the Calibration range is ambient to 25 psia Calibrate this sensor with approximate pressures of ambien...

Страница 41: ...l appear for your next measurement 11 When you are ready to take another measurement type in the next Reference value and click Enter Repeat this step for each Reference reading until the desired numb...

Страница 42: ...move all recorded measurements NOTE For pressure calibration Cal Mode uses the 3rd order polynomial setting by default You can select a different order if something other than 3rd order is appropriate...

Страница 43: ...bottom portion of the window NOTE If your reference and PL Read or PH Read are within expected tolerance proceed to Section 5 1 3 Pressure Sensor Reinstallation Otherwise continue with Step 13 to sav...

Страница 44: ...b Switch the main power Off If you removed the AN 7 16 20 adapter use a new copper sealing gasket between the transducer and the AN side of the fitting Each sensor has either an O ring or a bonded was...

Страница 45: ...ess 1 and the units are in Pascal Pa IMPORTANT If the lab changes any of the parameters during calibration the sensors should be returned to the above sensor parameters by the calibration lab prior to...

Страница 46: ...SPRT recommended 0 03 C or better accuracy Temperature calibration bath detailed in section 5 7 16 deep access T wrench supplied with the system Adjustment is performed by altering the coefficient val...

Страница 47: ...ned by a spring clip a light pull is all that is necessary 3 Before removing the temperature probes drain one gallon of the water glycol mixture a Remove the white drain plugs and connect tubing to th...

Страница 48: ...ess T wrench that is supplied with the system RHS Sat Temp Removal Tool pictured to the right 7 Uncoil the cable but do not unplug it from the temperature measurement board 5 2 2 CALIBRATION OF TS AND...

Страница 49: ...re probes into the calibration bath Caution Do not submerge the probe to the point where the interface between cable and sheath goes below the liquid surface Doing so could damage the probes b Set the...

Страница 50: ...values approximately 0 25 50 and 75 C Note These exact temperature values are not necessary The calibration requires 4 to 5 distinct points over the probe range A minimum of 5 reference values must be...

Страница 51: ...y your coefficients were properly saved a Select Ts Sat Temperature Coefficients from the drop down list and verify the new coefficients b Select Tc Chamber Temperature Coefficients from the drop down...

Страница 52: ...mp near the front of the saturator box where it was previously removed 8 Ensure the saturator and chamber drains are closed then remove the tubes and reinsert the 1 4 drain plugs 9 Pour the previously...

Страница 53: ...Power Traveling through the circuit breaker power is then branched to several locations AC power is applied to a 5V power supply Line 1 and line 2 power are also applied to solid state relays one for...

Страница 54: ...he PC the control computer and remainder of the system 6 1 2 EMBEDDED CONTROL BOARD The Embedded Control Board ECB operates the humidity generator by performing all functions required for system contr...

Страница 55: ...SUREMENT BOARD PT12 A Precision Temperature Measurement Board containing a multi channel 24 bit analog to digital converter measures all temperature sensors Two of the channels are dedicated to system...

Страница 56: ...uit breaker CB3 to the pre sat heater The amount of heat applied is controlled by pulse with modulation of that output A1 on the main controller board SATURATOR HEAT SSR3 is activated by output A2 of...

Страница 57: ...they are remaining activated by the computer at that time Once the computer shuts itself off it removes the power from the SSR activation and those two relays shut off removing AC power from the rest...

Страница 58: ...trol of the ECB using feedback from the flowmeter The gas then takes one of two paths through the presaturator system it flows either through the presaturator to humidify the air or through a pre satu...

Страница 59: ...he flowmeter is pneumatically connected just after the inlet pressure regulator In addition to the flow measurement function the flow meter also incorporates a pressure sensor used to measure the regu...

Страница 60: ...o the presaturator gas path Momentarily energizing SOL 3B via a short pulse of 24 VDC from ECB RLY4 latches the valve to the preset bypass gas path As the latching valve is a pressure assisted valve e...

Страница 61: ...from the pressure sensor are queried and received via addressable RS 485 2 wire half duplex mode RS 485 connection between the ECB and pressure sensor on UART1 D and D Communication parameters are typ...

Страница 62: ...ryer bleeds continuously regardless of system run status or dry air demand 6 3 FLUID SYSTEM There are several separate and distinct fluid systems in the humidity generator The saturator fluid circulat...

Страница 63: ...e automatically utilizing an electronic tube liquid presence sensor a high pressure pump P2 and a liquid level sensor within the presaturator When activated the pump P2 pulls water from the distilled...

Страница 64: ...of several significant components fluid pump heater refrigeration evaporator saturator and the fluid expansion tank Water circulated from the fluid pump P3 exits the top of the pump passes through a t...

Страница 65: ...rall fluid volume When the system is generating 24 VDC is sourced from the ECB s DC CONTROL RLY 2 to the fluid pump P4 An LED at RLY 2 indicates when it is active and power is applied to the pump Note...

Страница 66: ...ed from the compressor by turning off CB2 6 4 2 CONDENSER AND FAN The refrigeration condenser cools the high pressure high temperature gas output from the refrigeration compressor condensing it into a...

Страница 67: ...E SENSORS PRL PRH The refrigeration low side pressure sensor PRL measures the suction side pressure of the refrigeration compressor Readings from this sensor are in gauge relative pressure The sensor...

Страница 68: ...e relay SSR3 which completes the AC current path through circuit breaker CB3 to the presaturator heater A1 s digital output is visually indicated with an adjacent LED The heater ON status is also indi...

Страница 69: ...ed by a thermal cutout switch TH3 which removes AC power in the event of over temperature Chamber fluid temperature influences chamber temperature Chamber temperature is measured by temperature probe...

Страница 70: ...cted to RLY 16 Heating is accomplished by activating the ECB s DC CONTROL RLY 16 to source 24 VDC to the heaters RLY 16 s output is visually indicated with an adjacent LED When the LED is ON the heate...

Страница 71: ...the system Grouped by functional type the following tables in this chapter list the various inputs and outputs of the ECB and reference the specific sections of this manual where each input or output...

Страница 72: ...ription Reference RLY 1 P1 Saturator Fluid Pump Section 6 3 3 RLY 2 P2 Chamber Fluid Pump Section 6 3 4 RLY 3 SOL 9 Presat Select Section 6 2 4 RLY 4 SOL 3 Presat Bypass Section 6 2 4 RLY 5 SOL 6 Satu...

Страница 73: ...olt analog to digital converter system Each connector also has 12 VDC power available to directly power the connected devices or sensors Analog Input Description Reference AD0 PRH Refrigeration High s...

Страница 74: ...into the associated digital LEVEL INPUTS channel 6 6 6 UARTS The ECB contains 8 fully independent Universal Asynchronous Receiver Transmitter UART serial ports which are configurable for either RS 23...

Страница 75: ...C Center Access Port Temp Section 6 5 5 CH 12 TPL Lower Access Port Temp Section 6 5 5 CH 13 Rref1 Reference Resistor Section 6 7 CH 14 Rref2 Optional Reference Section 6 7 CH 15 Rref3 Reference Resis...

Страница 76: ...ce of water The air compressor tank is located below the system in the lower cabinet There is a mechanical valve located at the bottom of the air tank Slowly open the valve to ensure there is no prese...

Страница 77: ...quarterly maintenance actions which are listed in the sections below AIR COMPRESSOR TEST As with all mechanical systems the air compressor may wear out over time limiting its performance To test its o...

Страница 78: ...n and rotate a quarter turn clockwise to lock it into position That activates the air flow to the regulator 2 Turn the adjusting knob on the pressure regulator counterclockwise to lower the indicated...

Страница 79: ...n and maintenance to make sure it is working properly The following instructions are for disassembly of these items 1 Remove the three 3 m3x40mm and three 3 m4 x10mm screws from the valve being disass...

Страница 80: ...m2x2 5mm screw and optical sensor from the motor mount Figure 7 6 5 Carefully separate the valve body from the motor and valve plug assembly Figure 7 7 6 Once separated as seen in Figure 7 8 inspect...

Страница 81: ...ubleshoot Maintenance CGS 240 Manual 6 15 2021 Page 81 of 148 7 The Teflon seal has a 016 Viton O ring that should be checked and lightly greased upon reassembly 8 Assembly is the reverse of disassemb...

Страница 82: ...solenoids SOL4 SOL5 see section 6 2 7 17 Tp Presat Temperature Missing Presat temperature sensor is not reading and is possibly disconnected Check pre saturator temperature sensor Ch1 connection or c...

Страница 83: ...ng Low side refrigeration pressure sensor is not communicating Check pressure sensor power and connection see section 6 4 6 or 6 6 3 27 Prh Refrigeration Pressure High Missing High side refrigeration...

Страница 84: ...rating range Verify chamber liquid temperature Check chamber liquid temperature sensor Ch4 connection or check temperature measurement board see section 6 7 or 6 1 3 38 Pai Regulated Air in Pressure O...

Страница 85: ...ee section 6 2 7 42 Prl Refrigeration Pressure Low Out of Range Low side refrigeration pressure sensor is out of operating range Check pressure sensor power and connection see section 6 4 6 or 6 6 3 4...

Страница 86: ...nsion valve Check flow or expansion valve stepper controllers see section 6 2 3 or 6 2 5 WARNING CODES DESCRIPTION RESOLUTION 225 Tp Presat temperature high Pre saturator temperature is too high Verif...

Страница 87: ...ture is too high Verify center chamber access port temperature Check center chamber access port temperature sensor Ch11 connection or check temperature measurement board see section 6 5 5 or 6 1 3 Che...

Страница 88: ...id level low Pre sat liquid level is low This warning could possibly display while the pump is running if the pre sat liquid sensor is reading low If pump is operating normally and reservoir is full t...

Страница 89: ...Ch11 connection or check temperature measurement board see section 6 5 5 or 6 1 3 Check upper access port heater see section 6 5 5 261 Tpl Lower chamber port temperature low Lower chamber access port...

Страница 90: ...20 4 8 H generic 36 18 Countersunk flathead screw ISO 7046 1 M5 x 20 4 8 H generic 10 20 Cross recessed panhead machine screw ISO 7045 M5 x 10 4 8 H generic 16 21 Cross recessed panhead machine screw...

Страница 91: ...r chamber 873 01 150 0 RH Systems 1 56 Inner chamber spacer Cev 10x1_2 ipt RH Systems 4 57 Gas outlet tube 873 01 160 0 RH Systems 1 58 Gas outlet tube seal 873 01 163 0 RH Systems 1 59 PT100 connecto...

Страница 92: ...cabinet right door 873 01 600 1 RH Systems 1 93 Magnet holder right 873 01 621 0 RH Systems 1 94 Accessory cabinet left door 873 01 700 1 RH Systems 1 95 Magnet holder left 873 01 621 1 RH Systems 1 9...

Страница 93: ...d Size 3 8 Long BHCS8 32x3 8 Generic 79 507 18 8 Stainless Steel Socket Head Screw 1 4 20 Thread size 2 long Full Thread SHCS1 4 20x2 Generic 4 508 Manifold mount NC solenoid valve A2016 8 MM SB5 V VO...

Страница 94: ...32 Pressure Gauge 200 psi max reading 1 8 male NPT connection 15W1005H01B200 Ashcroft 1 533 Stainless Steel class 150 1 4 male npt x 1 4 male npt connector PipeUnionSS1 4x1 4 generic 1 534 Stainless S...

Страница 95: ...m Thread 10mm Long BHCSM4x10 generic 6 556 REDUX Wave Spring 0 75 OD 0 55 ID 0 25 Free Length 272 lb inch spring rate LW 075 22 0250 Lee Spring 2 557 Optical Switch Panel Chassis 3 81 mm 1 52 mm 50 mA...

Страница 96: ...ERM BLOCK PLUG 2POS 5 08MM EDZ1100 2 On Shore Tech 13 582 TERM BLOCK PLUG 2POS STR 5 08MM EDZ950 2 On Shore Tech 3 583 CONN HOUSING 6POS 100 W LATCH 50579406 Molex 5 584 CONN HOUSING 4POS 100 W LATCH...

Страница 97: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 97 of 148 8 2 ILLUSTRATIONS Figure 8 1 CGS 240...

Страница 98: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 98 of 148 Figure 8 2...

Страница 99: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 99 of 148 Figure 8 3...

Страница 100: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 100 of 148 Figure 8 4...

Страница 101: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 101 of 148 Figure 8 5 Figure 8 6...

Страница 102: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 102 of 148 Figure 8 7 Figure 8 8...

Страница 103: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 103 of 148 Figure 8 9...

Страница 104: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 104 of 148 Figure 8 10...

Страница 105: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 105 of 148 Figure 8 11 Figure 8 12...

Страница 106: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 106 of 148 Figure 8 13 Figure 8 14...

Страница 107: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 107 of 148 Figure 8 15...

Страница 108: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 108 of 148 Figure 8 16...

Страница 109: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 109 of 148 Figure 8 17...

Страница 110: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 110 of 148 Figure 8 18...

Страница 111: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 111 of 148 Figure 8 19...

Страница 112: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 112 of 148 Figure 8 20...

Страница 113: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 113 of 148 Figure 8 21...

Страница 114: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 114 of 148 Figure 8 22...

Страница 115: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 115 of 148 Figure 8 23...

Страница 116: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 116 of 148 561 564 563 562 567 566 566 566 565 563 568 564 564 566 563 577 570 569 575 572 573 576 572 571 573 570 574 572 Figure 8 24...

Страница 117: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 117 of 148 Figure 8 25...

Страница 118: ...Illustrated Parts Breakdown CGS 240 Manual 6 15 2021 Page 118 of 148 Figure 8 26...

Страница 119: ...40 Manual 6 15 2021 Page 119 of 148 DRAWINGS The legend is followed by drawings of the refrigeration system pneumatic system and fluid system The electronic board drawings are included in this portion...

Страница 120: ...Drawings CGS 240 Manual 6 15 2021 Page 120 of 148...

Страница 121: ...Drawings CGS 240 Manual 6 15 2021 Page 121 of 148 Figure 9 3 Refrigeration System...

Страница 122: ...Drawings CGS 240 Manual 6 15 2021 Page 122 of 148 Figure 9 4 Pneumatic System...

Страница 123: ...Drawings CGS 240 Manual 6 15 2021 Page 123 of 148 Figure 9 5 Fluid System...

Страница 124: ...Drawings CGS 240 Manual 6 15 2021 Page 124 of 148 Figure 9 6 AC Distribution...

Страница 125: ...Drawings CGS 240 Manual 6 15 2021 Page 125 of 148 Figure 9 7 AD0 3 LVL4...

Страница 126: ...Drawings CGS 240 Manual 6 15 2021 Page 126 of 148 Figure 9 8 Power Distribution...

Страница 127: ...Drawings CGS 240 Manual 6 15 2021 Page 127 of 148 Figure 9 9 RLY 1 14...

Страница 128: ...Drawings CGS 240 Manual 6 15 2021 Page 128 of 148 Figure 9 10 PT 12 Temp Board...

Страница 129: ...Drawings CGS 240 Manual 6 15 2021 Page 129 of 148 Figure 9 11 UART 0 3...

Страница 130: ...Drawings CGS 240 Manual 6 15 2021 Page 130 of 148 Figure 9 12 Access to Presat Drain Fitting...

Страница 131: ...Drawings CGS 240 Manual 6 15 2021 Page 131 of 148 Figure 9 13 Access to Sat Drain Fittings...

Страница 132: ...Drawings CGS 240 Manual 6 15 2021 Page 132 of 148 Figure 9 14 Temperature Probes...

Страница 133: ...Drawings CGS 240 Manual 6 15 2021 Page 133 of 148 Figure 9 15 Pressure Transducers Manifold...

Страница 134: ...luates the plateau for the most stable sections based on standard deviation Once found the mean values of the selected stable plateaus are used along with reference data to calculate new coefficients...

Страница 135: ...You can use the three buttons below to select a reference data set use a manual data set or choose a UUT data set For example select the data column name e g T1 under file name hart chub ch1 ref temp...

Страница 136: ...it of the plateau by evaluation of the standard deviation Evaluate This button causes Plateau to evaluate the UUT data set and find the plateaus given the setting mentioned previously Plateau will the...

Страница 137: ...xample if there were a data set that was saved with the csv Comma Separated Value file format you would select from the drop down menu to parse the data If AUTO is selected RHS Plateau will attempt al...

Страница 138: ...menu options for X Axis DateTime format which specifies how the labels for the x axis will be formatted If AUTO is selected RHS Plateau defaults to Year Month Day_Hour Min Sec Once plotted the X Axis...

Страница 139: ...DateTime T1 T2 T3 T4 2020 12 07T14 30 20 137 24 917 0 4295 1 8263 2020 12 07T14 30 50 132 24 917 0 4244 3 9463 273 150 2020 12 07T14 31 20 129 24 918 0 5772 1 9482 To select a file click File Load Fil...

Страница 140: ...nce Alternatively you may use manual reference values as described in Selecting a Manual Reference section 5 3 3 You will notice that the Select as UUT add to view button has now also been enabled Nex...

Страница 141: ...Additionally there are multiple options with which you can further specify what is considered a plateau with respect to a given data set To understand these options refer to the Intro section under re...

Страница 142: ...set starting from 0 This can also be altered in real time to a different value by clicking in to the spinbox and typing a new value A spinbox labeled End Index which represents the end index of the pl...

Страница 143: ...ned outliers excluded 10 5 SELECTING A MANUAL REFERENCE As an alternative to selecting a reference data set it is possible to manually input reference values for a given plateau as shown in Figure 5 2...

Страница 144: ...al to the Calculating Calibration Coefficients section 10 6 CALCULATING CALIBRATION COEFFICIENTS Once the desired plateaus have been selected and the manual reference values are filled in if applicabl...

Страница 145: ...ration type appear displaying the calibration coefficients as shown in Figure 5 32 To save the newly calculated coefficients to a file on the host computer click the Save Coefficients button A pop up...

Страница 146: ...le is shown in Figure 5 36 10 7 PLOTTING RESIDUALS Once the coefficients have been calculated the UUT data may be evaluated using the new coefficients and the corresponding curve fit residuals determi...

Страница 147: ...r the coefficients themselves can be changed 10 8 EXPORT DATA Once the residual data has been plotted now export the calculated coefficients and the data from each plateau to a single CSV file To do s...

Страница 148: ...ures Bre C 25 Jun 2020 Parts Lists Drawing Bre D 16 Nov 2020 Drawings Pictures Bob E 17 Nov 2020 Figures Drawings Bre F 10 Feb 2021 Image Updates Template Changes Erik G 12 Apr 2021 Expanded content i...

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