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Vaisala PTU200 Series, Руководство пользователя

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C

HAPTER 

6_______________________________________________

CALIBRATION AND 

ADJUSTMENT

V

AISALA

_________________________________________________________________________ 31

CHAPTER 6

CALIBRATION AND
ADJUSTMENT

Pressure

The user can select a simple offset or a two-point offset and gain
adjustment and use the LCI command for adjustment of pressure
transducer. The MPCI command is used for the more sophisticated
multipoint correction capability at up to eight pressure levels.

Check first what linear corrections the transmitter is currently using
before attempt to readjust the transducer. As the previous linear
corrections will disappear when new linear corrections are input, the
user has to take into account the previous linear corrections when
deciding about the new ones.

NOTE

Entering new linear or multipoint corrections will always cancel the
previous corrections. It is advisable to write down the previous linear
and multipoint corrections so that they will not be lost by mistake.

Entering new linear or multipoint corrections or changing their status
will also automatically cancel the date of calibration of the
transmitter (see CALD command).

T

ABLE 

6-1

Adjustment and calibration commands

Function

Command

listing corrections

CORR

linear corrections on/off

LC ON/OFF

multipoint corrections on/off

MPC ON/OFF

entering multipoint corrections

MPCI

calibration date

CALD

The linear and multipoint corrections are protected by switch SW4
(see figure 6.2). The switch SW4 is normally in write DISABLE
position (OFF) and the user must change it to write ENABLE position

All manuals and user guides at all-guides.com

Содержание PTU200 Series

Страница 1: ..._______________________CONTENTS VAISALA ___________________________________________________________________________I PTU200 Series Transmitters USER S GUIDE M210195EN A AUGUST 2001 All manuals and use...

Страница 2: ...t outputting ON or OFF 16 UNIT Setting the pressure and temperature units 16 AVRG Setting the averaging time 17 INTV Setting the output interval 18 ADDR Setting the transmitter address for POLL mode 1...

Страница 3: ...Returning the serial communication parameters 43 Diagnostic commands 44 Basic information on the transmitter settings 44 VERS Software version 45 SNUM Serial number 45 ERRS Error message output 45 CHA...

Страница 4: ...All manuals and user guides at all guides com...

Страница 5: ...d It calls attention to a procedure practice condition or the like which if not correctly performed or adhered to could result in injury to or death of personnel CAUTION Caution denotes a hazard It ca...

Страница 6: ...be sent to the works of Vaisala or to such other place as Vaisala may indicate in writing freight and insurance prepaid and properly packed and labelled unless Vaisala agrees to inspect and repair the...

Страница 7: ...S232 or RS485 optional serial interface and they are available also with a local display In outdoor applications it is recommended to use the PTU200MIK mounting kit with the PTU200 transmitters In add...

Страница 8: ...r The HMP45A P probe has the HUMICAP 180 polymer sensor and the Pt 1000 resistive platinum sensor for RH and T measurements respectively The 20 metres cable of the HMP45A P is connected to a board wit...

Страница 9: ...ct Vaisala or Vaisala distributor Please take into a consideration that the pressure fitting supplied with the transmitter is not a static pressure head and that the transmitter cannot be used success...

Страница 10: ...with diode 2 TX TXD TXD inverted 3 RX RXD RXD inverted 4 external power on off control 5 ground for the RS 232C 6 RS 485 422 LO 7 ground for supply voltage and TTL level serial interface 8 RS 485 422...

Страница 11: ...ny problems please check the jumper settings in connector X15 and the settings in dip switch S1 inside the transmitter The settings should be as indicated in the figure below TXD RXD X15 RX RXD TX TXD...

Страница 12: ..._________________________________________________ 8 ____________________________________________________________________ M210195EN A FIGURE 3 4 Connecting the cable Dimensions in mm inches All manuals...

Страница 13: ...d 16 characters on each row The following fields in the display format can be used pressure quantities pressure average difference three hour pressure trend and pressure tendency code temperature quan...

Страница 14: ...t with enter The transmitter now returns to the original display Example of changing serial settings 1 Press ENT and the text UNIT starts blinking Choose SER by using the arrow keys and acknowledge wi...

Страница 15: ...n STOP mode after power up the transmitter outputs its type and software version and then waits for further commands In RUN mode continuous outputting starts automatically from power up In SEND mode a...

Страница 16: ...URN key of the host computer The SERI command is used to set or inspect the serial bus settings of the transmitter Examples seri cr 9600 E 7 1 F seri 1200 N 8 1 H cr 1200 N 8 1 H reset cr PTU200 1 01...

Страница 17: ...y outputs a reading with the following form 1013 12 pressure quantities P1 P2 P average PD difference pressure trend TRE three hour trend pressure tendency A three hour tendency temperature quantity o...

Страница 18: ...P1 UUU T UU RH UUU r n esc Use ESC key to abort without changing the settings EFORM Defining the error output format EFORM cr The EFORM command can be used to define a user specific error output forma...

Страница 19: ...or heads T temperature quantity of HMP45 TH relative humidity RH units U UU UUU UUUU UUUUU serial number of the transmitter SN error status ERR three characters stability indicator OK uses three chara...

Страница 20: ...ed with an error message PROMPT Setting the prompt outputting ON or OFF PROMPT x where x ON or OFF PROMPT cr Prompt ON PROMPT OFF cr Prompt OFF send cr 1007 9 hPa Tend 7 24 9 C 28 RH PROMPT ON cr Prom...

Страница 21: ...eraging time for each pressure transducer The third transducer is the VMT for measuring RH T Note that if the averaging time is defined to be long the settling time at power up will be long too The ou...

Страница 22: ...ase of the half duplex RS 485 422 serial communication the user is requested to set the interval time to one second or more This enables an interruption of outputting if the R command is given by mist...

Страница 23: ...andard SEND command of the transmitter will always function normally whatever the SCOM definition may be The new command must be defined within signs then some end characters also can be defined Note...

Страница 24: ...g for the stability indicator level is 0 5 hPa pstab 0 5 cr Stab level 0 50 hPa form 4 2 P UUU OK r n send cr 1020 30 hPa OK accepted send cr 1020 30 hPa rejected PDMAX Setting the pressure difference...

Страница 25: ...d to set or inspect the keypad lock condition of the display cover keypad The PTU200 transmitters with display cover are supplied with the keypad locked KEYLOCK OFF It is thus possible to inspect the...

Страница 26: ...erface of the PTU200 does not require any hardware settings to be made to the transmitter See page 53 for quick reference information on how to use the RS485 422 interface of the PTU200 series digital...

Страница 27: ...rized settings of the dip switch S1 SW1 OFF not used SW2 OFF ON external power control OFF TTL 0 VDC external power control ON TTL 5 VDC SW3 OFF not used SW4 OFF ON memory write DISABLE memory write E...

Страница 28: ...All manuals and user guides at all guides com...

Страница 29: ...includes the address OPEN and CLOSE commands are also available for temporary communication with one single transmitter In the SEND mode no commands are needed The transmitter will automatically outpu...

Страница 30: ...hPa 22 9 RH 22 4 C 1013 25 hPa 22 9 RH 22 4 C 1013 25 hPa 22 RH 22 4 C Example of restarting the outputting in RUN mode SMODE cr Serial mode RUN RESET cr 1009 1 hPa 42 4 RH 24 2 C 1009 1 hPa 42 4 RH 2...

Страница 31: ...cified one using the SCOM command see Chapter on page 11 RESET Resetting the transmitter RESET cr The RESET command is used to reset the transmitter All software settings remain in the memory after re...

Страница 32: ...he host system is able to direct the outputting commands to the particular transmitter The addressable SEND command is used to ask for a single message output from the transmitter The OPEN command can...

Страница 33: ...d and requires no address The PTU200 series transmitters must always be closed after the POLL mode selection The RESET command and powering up will close the PTU200 series transmitters automatically a...

Страница 34: ...er ON and TTL LOW 0 VDC turns the transmitter OFF Examples of outputting with the prompt ECHO ON and without the prompt ECHO OFF echo cr Echo ON smode send cr Serial mode SEND reset cr 1013 25 hPa ech...

Страница 35: ...nt the previous linear corrections when deciding about the new ones NOTE Entering new linear or multipoint corrections will always cancel the previous corrections It is advisable to write down the pre...

Страница 36: ...us of linear and multipoint pressure corrections In case the status is ON the corrections and valid date of calibration are listed The listing varies according to the number of transducers in the tran...

Страница 37: ...he linear corrections in use The linear corrections are protected with switch SW4 see FIGURE 6 1 Turn the switch SW4 to write ENABLE position ON to be able to turn the linear corrections on or off NOT...

Страница 38: ...on of the transmitter then gives the required new corrections NOTE The new linear corrections will always cancel the previous corrections as well as the valid date of calibration of the transmitter se...

Страница 39: ...osition ON to be able to turn the multipoint corrections on or off NOTE Changing the multipoint corrections on or off will automatically cancel the previous date of calibration of the transmitter see...

Страница 40: ...ecalibration of the transmitter then gives the required corrections When entering new multipoint corrections always start at the low pressure end and then go up the pressure range NOTE The new multipo...

Страница 41: ...e switch SW4 to write DISABLE position OFF CALD Storing the date of calibration CALD yyyy mm dd cr This command is used to store the date of calibration in the memory of the transmitter Example cald c...

Страница 42: ...a Vaisala HMK15 or HMK13B calibrator and saturated salt solutions as described in the respective manuals If there is no local display read the outputs via the serial line Leave the calibrator and the...

Страница 43: ...ature adjustment follow attentively the instructions given below NOTE The temperature channel has to be calibrated if the probe head has been changed The temperature adjustment can be done via the ser...

Страница 44: ...ter at temperature T1 Tref2 measured with a reference thermometer at temperature T2 Tmeas1 measured with PTU200 at temperature T1 Tmeas2 measured with PTU200 at temperature T2 Example Tref1 14 97 C an...

Страница 45: ...x 2 if there is one pressure transducer installed 3 if there is two pressure transducers installed The V0XCI command is used to enter new offset and offset gain corrections for temperature measuremen...

Страница 46: ...All manuals and user guides at all guides com a l l g u i d e s c o m...

Страница 47: ...serial interface has to be set for basic RS 232C operation according to FIGURE 7 1 With these selections one single transmitter can be operated through the RS 232C serial interface using factory seria...

Страница 48: ...ation on the transmitter settings cr The command lists the basic information of the transmitter Software version PTU200 1 02 Serial number T5030004 Configuration 12 Linear adjustments ON Multipoint ad...

Страница 49: ...er of the transmitter snum CPU serial no T2210005 TR1 serial no 0 TR2 serial no 0 TR3 serial no 0 CTR1 serial no 0 CTR2 serial no 0 CTR3 serial no 0 ERRS Error message output ERRS cr The ERRS command...

Страница 50: ...fference too large E12 TR2 Transducer not present E22 TR2 EEPROM csum error E32 TR2 serial number error E42 TR2 f out of range E52 TR2 y value out of range E62 TR2 pressure out of range E72 TR2 P diff...

Страница 51: ...y 0 1 hPa year Response time 100 response class A class B one sensor 2 seconds 1 second Defined as the 2 standard deviation limits of end point non linearity hysteresis error or repeatability error De...

Страница 52: ...year Temperature dependence 0 05 RH C Response time 90 at 20 C 15 s with membrane filter Humidity sensor HUMICAP 180 Temperature HMP45A P HMP45D Measurement range 36 60 C HMP45A P 40 60 C HMP45D Accur...

Страница 53: ...than 50 mA with backlight hardware shutdown mode less than 0 1 mA Serial I O full duplex RS 232C or bidirectional TTL level or half duplex two wire RS 485 422 code ASCII parity even odd none data bits...

Страница 54: ...alve for 1 8 I D tubing Maximum pressure limit 5000 hPa abs Minimum pressure limit 0 hPa Electrical connector female 9 pin subD connector Housing epoxy painted aluminium HMP45A P and HMP45D Housing AB...

Страница 55: ...______________________________________________________________ 51 Dimensions Transmitter body HMP45A P HMP45D 120 4 72 25 6 1 01 145 5 71 133 5 24 104 4 09 120 4 72 139 5 5 49 65 2 56 6 5 0 26 0 94 24...

Страница 56: ...e EMC requirements Generic environment Test methods Emission Radiated emissions CISPR16 class B CISPR22 Class B Immunity Electrostatic discharge ESD EN IEC 61000 4 2 EM field EN IEC 61000 4 3 EFT Burs...

Страница 57: ...line master If a branch line is made with a junction box the branch should be shorter than 3 meters When using PTU200 series transmitters on RS485 422 interface select half duplex operation set an add...

Страница 58: ...2 differential input signals RS485 422 LO upper signal and RS485 422 HI lower signal at baud rate 9600 The vertical scale is 2V div for both signals The ground level for each signal is shown with a sm...

Страница 59: ...X A ____________________OPTIONAL RS485 422 INTERFACE OF PTU200 TRANSMITTERS VAISALA _________________________________________________________________________ 55 All manuals and user guides at all guid...

Страница 60: ...CONNECTOR MALE DATA TO PTU200 DATA FROM PTU200 DATA TO Z 12 DATA FROM Z 12 FIGURE B 1 Pin assignments between the PTU200 and an Ashtech Z 12 type receiver serial number LPxxxxxxx GND PWR 1 2 3 4 5 6...

Страница 61: ...ent of PTU200 for RS232 is as follows PIN SIGNAL 1 2 TX 3 RX 4 5 GND RS 232C 6 7 GND Supply 8 9 10 30 VDC Supply voltage NOTE To be compatible with the PTU200 the receiver must have a MET option NOTE...

Страница 62: ...that the transmitter has the same serial bus settings as the GPS receiver It is recommended to use baud rate less than 9600 FORM cr Example 1 PASHS XDR P 1 5_P_ B _SN_ C _3 2_TH_ C _SN_ H _RH_ P _SN_...

Страница 63: ...XDR P 1 01148 B C 27 11 C H 54 29 P NOTE Please note that the symbol for temperature depends on the probe type of the PTU200 see page 13 GPS Commands The PTU200 transmitter responds to following GPS...

Страница 64: ...__________________ 60 ___________________________________________________________________ M210195EN A Serial number 9900SN This command is used to give the serial number output to a GPS receiver Examp...

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