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CS125 Present Weather Sensor

8. CS125 internal connectors’ description

The CS125 has four standard IP66 rated glands. The first gland is by default used

by the power/communications line. This comprises the 7-30 V for the main

electronics, and the serial communications wires. The CS125 is supplied with 5 m

cable already connected.

The second gland is used for the 24 V feeds for the hood heaters fitted with a 5 m

cable.

Glands 3 and 4 are spare. If user alarms are connected they usually use gland 3

and if a CS215 is fitted this usually uses gland 4.

If the power cable is incorrectly wired to the CS125 then

damage can be done to the unit.

10 m is the longest length of the cable type supplied

recommended. In particular, additional RS485 communication

should be twisted pair. Please contact Campbell Scientific if

you wish to use a longer length of cable.

Figure 8-1. Connections

A configuration cable, part number 010817, is available from Campbell Scientific

that plugs directly into connector B, in place of the normal connector and cable.

CAUTION

Содержание CS125

Страница 1: ...INSTRUCTION MANUAL CS125 Present Weather Sensor Revision 10 15 C o p y r i g h t 2 0 1 3 2 0 1 5 C a m p b e l l S c i e n t i f i c I n c...

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Страница 3: ...ucts to CSI CSI will return such Products by surface carrier prepaid within the continental United States of America To all other locations CSI will return such Products best way CIP port of entry per...

Страница 4: ...g container Campbell Scientific s shipping address is CAMPBELL SCIENTIFIC INC RMA _____ 815 West 1800 North Logan Utah 84321 1784 For all returns the customer must fill out a Statement of Product Clea...

Страница 5: ...beginning work Wear a hardhat and eye protection and take other appropriate safety precautions while working on or around tripods and towers Do not climb tripods or towers at any time and prohibit cl...

Страница 6: ......

Страница 7: ...rounding 8 7 2 Mounting the CS125 9 7 3 Optional Campbell Scientific Mount 10 8 CS125 internal connectors description 12 8 1 CS125 recommended wiring using Campbell Scientific cables 14 9 CS215 T RH S...

Страница 8: ...31 14 2 The SETNC Command 31 14 2 1 Example of a SETNC Command 32 14 3 The GET command 32 14 4 The POLL command Polling the CS125 34 15 Entering the CS125 menu system 35 16 Calibrating the CS125 41 1...

Страница 9: ...ions 14 8 3 Communications and power connector 15 8 4 Configuration cable 15 9 1 Connection for the optional CS215 T RH sensor 16 9 2 Connection for an external CS215 temperature and RH sensor connect...

Страница 10: ...vi...

Страница 11: ...le The CS125 uses high speed sampling to reduce missed events such as rain and hail and improves response to other suddenly changing conditions When an optional CS215 temperature and RH sensor is conn...

Страница 12: ...ation in the installation use and maintenance of this product These should be followed carefully in order to gain the maximum benefit from the use of this product 1 2 Sensor Unit Safety The CS125 sens...

Страница 13: ...l Value Maximum Value Main power supply for DSP and dew heaters Power supply 12V connection DC only 7V 12V 30V 1 Current consumption sampling continuously with dew heaters active at 12V DC 200mA 248mA...

Страница 14: ...ecommended that the hood heaters are run at 24V AC DC It s possible to run the heaters at any voltage below 24V but the heaters will generate proportionally less heat reducing their ability to prevent...

Страница 15: ...Sensor temperature ranges Operating temperature 25 C 60 C Extended operating temperature 40 C 70 C 1 Storage temperature 40 C 85 C Sensor humidity ranges Operating humidity range 0 100 Sensor heater t...

Страница 16: ...cket mounts on a vertical pole 32 52 5 mm diameter The mounting bracket has cut outs for band clamps for larger diameter masts 7 Installation procedure The CS125 measures environmental variables and i...

Страница 17: ...lenses Whenever possible the CS125 should be located away from windbreaks Several zones have been identified upwind and downwind of a windbreak in which the airflow is unrepresentative of the general...

Страница 18: ...e 7 1 Equipment grounding The CS125 must be properly grounded It is sufficient to ground the mounting bracket and if the CS125 is connected to a grounded metal mast and in electrical contact with it t...

Страница 19: ...sensor s sensing volume Take care not to overtighten the nuts on the bolts as it may be possible to distort and or damage the brackets or DSP plate by doing so and or the nuts may seize up Only tight...

Страница 20: ...Instruments and Methods of Observation 7th Edition Section 9 3 4 Figure 7 4 Optical sensor mast If one is to be used follow the installation instructions below The mount should be installed on a conc...

Страница 21: ...the threads during installation Hammer the wedge anchors into the holes until the start of the threads are below the surface Tighten the nuts until about 25 mm of thread protrudes above the surface Re...

Страница 22: ...3 and 4 are spare If user alarms are connected they usually use gland 3 and if a CS215 is fitted this usually uses gland 4 If the power cable is incorrectly wired to the CS125 then damage can be done...

Страница 23: ...n 3 Pin 3 should not be more than 5 volts from the main electronics 0V Connector B Three way connector Pin number Description Notes Pin 1 0V 0V connection for serial communications This connection is...

Страница 24: ...g Campbell Scientific cables this cable is supplied already connected as standard The CS125 is provided pre wired with a default 5 m power and communications cable which is terminated at one end with...

Страница 25: ...by a CS215 and its use is highly recommended in regions where temperatures close to 0 C are common if information on precipitation type is important It also allows RH information to be included in dat...

Страница 26: ...ated within the main enclosure These switches perform certain functions at power up their functions are detailed below The switches are only read during the power up sequence of the CS125 This means t...

Страница 27: ...485 mode or a baud rate your PC does not support This change is temporary and will not be stored to flash When switched to the ON position and the CS125 is power cycled this switch temporarily sets th...

Страница 28: ...this switch set permanently 11 Message Formats A breakdown of the different default outputs of the CS125 Basic Partial Full The CS125 has twelve different message formats available to the user All pa...

Страница 29: ...age return Line feed 0x02 2 M or F 0 0 0 0 0 0 0 XXXX 0x03 0x0D 0x0A 11 2 Messages with SYNOP Present Weather Codes SYNOP Present Weather Basic Format STX Message ID Sensor ID System status Visibility...

Страница 30: ...XXXX 0x03 0x0D 0x0A 11 3 Messages with METAR Present Weather Codes METAR Present Weather Basic Format STX Message ID Sensor ID System status Visibility distance Visibility units METAR Code Checksum C...

Страница 31: ...XXXX 0x03 0x0D 0x0A Note relative humidity is only available if a CS215 temperature and RH sensor is attached If not this field is 99 11 4 Messages with Generic SYNOP Present Weather Codes These mess...

Страница 32: ...Particle count minute Intensity mm h Generic SYNOP code SYNOP code METAR code Temperature deg C Relative humidity Checksum CCITT EXT Carriage Return Line feed 0x01 11 M or F 0 0 0 0 0 0 0 XXXX 0x03 0...

Страница 33: ...output interval or when the sensor is polled Those averages are not direct averages of MOR measurements but are averages of extinction coefficient and that average is then used to calculate the MOR f...

Страница 34: ...ture error at power up Severity 3 2 User memory signature did not match when last read Severity 2 3 User memory fault at power up Secondary copy was reinstated to correct error Severity 2 4 User memor...

Страница 35: ...ge Definition See Section 10 3 METAR weather code for the last minute as defined by the WMO code table 4678 External temperature Range Definition 40 0 80 0 C External temperature in degrees Celsius Re...

Страница 36: ...zing slight 51 Drizzle not freezing moderate 52 Drizzle not freezing heavy 53 Drizzle freezing slight 54 Drizzle freezing moderate 55 Drizzle freezing heavy 56 Drizzle and rain slight 57 Drizzle and r...

Страница 37: ...nfiguring the CS125 on any Microsoft based personal computer All settings can be accessed using this program The program includes online help instructions that describe its general use with the CS125...

Страница 38: ...n the CS125 The acceptable range and the identification number for these variables are listed below along with a short description ID Name Range Description Factory default 1 Sensor ID 0 9 Separate ID...

Страница 39: ...message 0 1 and 2 Basic partial or full visibility messages 3 4 and 5 Basic partial or full SYNOP messages 6 7 and 8 Basic partial or full METAR messages 9 10 and 11 Basic partial or full SYNOP messag...

Страница 40: ...SET and POLL The GET command is used to request all current user settable values from the CS125 The SET commands sets user settable values and the POLL command is used to request the current visibili...

Страница 41: ...compensation CRC checking on received commands Sensor power down voltage Relative humidity threshold Delimiting character XXXX Checksum use the valid CCITT checksum Delimiting character 0x03 1 ETX C 2...

Страница 42: ...nd The GET request GET transmitted data Example Description 0x02 1 STX B 2 GET GET Delimiting character 0 Address based on Sensor ID Delimiting character 0 Reserved for future use zero default Delimit...

Страница 43: ...rmat RS232 or RS485 serial communications enabled Averaging Period Sample timing Dew heater override Hood heater override Dirty window compensation CRC checking on received commands Sensor power down...

Страница 44: ...32 or RS485 serial communications 1 RS485 Averaging period 1 minute Sample timing 1 sample per second Dew heater override 0 CS125 will automatically control the dew heaters Hood heater override 0 CS12...

Страница 45: ...sensitive Example of a POLL request The maximum response time to a poll command is 100 ms If the setting to check the checksum on received commands is enabled the checksum varies with the Sensor ID v...

Страница 46: ...bration menu but you will be informed before any changes are made Typing 1 opens the message menu containing settings relating to the CS125 s outputs Menu 1 The message output menu CS125 MESSAGE MENU...

Страница 47: ...or example typing 2 will toggle the units through the options METRES and FEET and typing 4 will allow the message interval to be entered Option 2 allows the User Alarms to be set again by toggling thr...

Страница 48: ...an be restored if needed using Option 2 in the calibration menu The disk constants however remain as the last disk used Option 4 gives the systems information menu containing useful information such a...

Страница 49: ...n 007646v1 Alarm Value Last visibility reading 3258M Overall system status 0 No faults Emitter dirty window alarm 0 0 Emitter internal temperature 0 38 4 Detector dirty window alarm 0 0 Detector inter...

Страница 50: ...RH threshold can also be set from this menu This applies if a CS215 sensor is attached and defined the level of RH below which obscuration is deemed to be dry that is haze SYNOP 04 or 05 METAR HZ rat...

Страница 51: ...t be necessary to change any internal switches See Section 10 for more information on the CS125 internal switches The test should ideally be performed in the following conditions Ambient temperature s...

Страница 52: ...mber and coefficient with a confirmation at each step giving you the chance to correct typing mistakes When asked for confirmation you do not need to press return after you type y Figure 16 1 Calibrat...

Страница 53: ...tes Every ten seconds a dot should appear indicating that the test is progressing as normal Remove the bungs once the sensor instructs you to Place the CS125 calibrator into the volume by fastening it...

Страница 54: ...ry setting can be viewed from menu item 4 from the main menu once the test is completed 16 2 Dirty window zero calibration Option 3 in the calibration menu allows the user to reset the zero contaminat...

Страница 55: ...in a similar way to the following Calibrating dirty window system Please wait DD 990 DO 4535 DD 1000 DO 4531 DD 1010 DO 4373 DD 1020 DO 4206 DD 1030 DO 3886 DD 1110 DO 2675 DD 1120 DO 2682 DD 1130 DO...

Страница 56: ...CS125 Present Weather Sensor 46 Figure 17 1 CS125 DevConfig download instructions Figure 17 2 CS125 DevConfig screen when OS update is complete...

Страница 57: ...ne to contaminants and monthly intervals for those prone to contamination roadside or airport use In some cases more frequent cleaning may be required where there are high levels of contaminants and h...

Страница 58: ...occur if any other type of heating unit or appliance is used 2 When placed in a forced air circulating air or convection oven allow a minimum of 4 to 5 cm of air space between the top of the bags and...

Страница 59: ...coming into contact with the regenerated desiccant Some care should be taken when re activating desiccant bags If heated in an oven which is too hot the bags may burst If in any doubt we recommend pu...

Страница 60: ......

Страница 61: ...ower feedback Dirty window detector Dirty window detector Amplifier and filter Amplifier and filter Second stage amplifiers and filters 14 bit Analogue to digital converter MCU Micro controller unit H...

Страница 62: ...CS125 Present Weather Sensor A 2...

Страница 63: ...ksum seeded with 0x0000 XModem style using a fast non table based algorithm Pass in the data to convert into a CRC in the form of a NULL terminated character array a string Returns the CRC in the form...

Страница 64: ...CS125 Present Weather Sensor B 2...

Страница 65: ...est 11 Emitter_lens_dirty 0 3 Emitter Lens Dirty Alias SerialIndest 12 Emitter_temp_error 0 3 Emitter Temperature Alias SerialIndest 13 Detector_lens_dirty 0 3 Detector Lens Dirty Alias SerialIndest 1...

Страница 66: ...sum is valid Calculate the expected checksum lngCRCCalc CheckSum InString 1 NBytesReturned 5 Extract the checksum from the message convert it for comparison lngCRCMsg HexToDec checksumrx ChecksumOK ln...

Страница 67: ...Lens Dirty Alias SerialIndest 14 Detector_temp_error 0 3 Detector Temperature Alias SerialIndest 15 Detector_saturated 0 1 Detector DC Saturation Level Alias SerialIndest 16 Hood_temp_error 0 3 Hood T...

Страница 68: ...h03 NBytesReturned 01 Check that a message has been recieved first If NBytesReturned 0 Then SplitStr SerialIndest InString 27 5 Check the received checksum is valid Calculate the expected checksum ln...

Страница 69: ...ows 1 Sensor ID 2 User Alarm 1 Set 3 User Alarm 1 Active 4 User Alarm 1 Distance 5 User Alarm 2 6 User Alarm 2 Active 7 User Alarm 2 Distance 8 Serial BaudRate 9 Serial number Read only so not used 10...

Страница 70: ...distance to 15000 CS125CArray 8 2 Set serial baud rate to 38400bps CS125CArray 9 0 Read only so dummy value added here but not needed CS125CArray 10 M Set unit type to metres use upper case CS125CArr...

Страница 71: ...er Dim TempString As String 100 Alias TRHData 1 AirTC Alias TRHData 2 RH This function creates a SETNC command string for the CS125 visibility sensor Including all delimiting characters and checksums...

Страница 72: ...as a fail safe in case the GET command does not return data CS125CArray 1 0 Set ID to 0 CS125CArray 2 0 Disable alarm 1 CS125CArray 3 1 Set alarm 1 to if greater than CS125CArray 4 10000 Set alarm 1 t...

Страница 73: ...nStringGET 1 Then Check data was returned SplitStr CS125CArray 1 InStringGET 21 5 Strip the settings from the returned data string CS125CArray 1 Right CS125CArray 1 1 Trim the SOT from the first data...

Страница 74: ...tgoing string Dim CheckVal As Long Checksum value Public InString As String 200 Incomming string Dim TempString As String 16 Main Program BeginProg SerialOpen Com1 38400 3 0 10000 open port to the vis...

Страница 75: ......

Страница 76: ...ua Apinag s nbr 2018 Perdizes CEP 01258 00 S o Paulo SP BRASIL www campbellsci com br vendas campbellsci com br Campbell Scientific Canada Corp 14532 131 Avenue NW Edmonton AB T5L 4X4 CANADA www campb...

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