background image

25

7020

7510

max DP

r

o

C

Max. Dew point

7022

7511

min AH

r

g/m

3

Min. absolute humidity

7024

7512

max AH

r

g/m

3

Max. absolute humidity

Table 16 shows the register of measured value of the transducer P18D 
running in compatibility mode registers 7000 and 7500 with P14W trans-
ducer.

Value is 

place in two 

following 

16-bit regi-

sters, Those 

register have 

the same 

value like 32-

bit  register 

from range 

7500….

Value 

placed 

in 

32-bit 

regi-

sters 

Name

Wr

ite (w) / readout (r)

UNIT

Name of quantity

7000

7500

ID

r

-

ID of P18D transducer

7002

7501

T

r

o

C

Measured Temperature

7004

7502

DP

r

o

C

Calculated Dew point

7006

7503

-

-

-

7008

7504

RH

r

%

Measured relative humidity

7010

7505

AH

r

g/m

3

Calculated absolute humidity

7012

7506

-

-

-

7014

7507

-

-

-

7016

7508

-

-

-

7018

7509

min T

r

o

C

Min. temperature

7020

7510

max T

r

o

C

Max. temperature

Table 16

Summary of Contents for P18D

Page 1: ...1 USER S MANUAL TEMPERATURE AND HUMIDITY TRANSDUCER P18D TYPE...

Page 2: ...2...

Page 3: ...calucated values 12 5 4 2 Chosen of values for analog outputs 13 5 4 3 Individual characteristic of analog outputs 13 5 4 4 Default parameters 15 6 RS 485 interface 16 6 1 Serial interface connection...

Page 4: ...4...

Page 5: ...Con program available on our website www lumel com pl en Applied sensor shields enable the application of the P18D transducer in various ambient conditions Fig 1 View of the P18D transducer 2 TRANSDUC...

Page 6: ...INSTALLATION 4 1 Assembly The P18D transducer is designed to be mounted on a wall by means of a screw connection or glue without the loss of IP65 tightness The transducer housing is made of a self ext...

Page 7: ...round wire with external dia meter from 3 5 mm up to 6 mm Before the transducer assembly one must remove the LCD display pass supplying wires through the packing Twist the packing seal in order to obt...

Page 8: ...ucer with voltage outputs Fig 5 Way of Electrical Signal Connection To connect the input signals in an environment with high interference one must apply shielded wires The shield must be connected to...

Page 9: ...the transducer through another trans mission media like ETHERNET USB using LUMEL S A s converters 5 1 Messages after supply switching on After connecting external signals and switching the supply on...

Page 10: ...g absolute humidity g temperature Indicator of data receive on the RS 485 interface Indicator of data transmission on the RS 485 interface 5 2 Description of P18D display Readout field in the transduc...

Page 11: ...RS 485 interface servicing in the MODBUS protocol in RTU mode 5 3 Functions of capacitive button The P18D transducers have one capacitive button on the housing The position of the button is shown on...

Page 12: ...AH 2 1668 Pws RH 100 T 273 2 DP Tn m 1 log Pws RH 10000 A Coefficients for the dew point Table 2 T o C A m Tn 0 6 119866 7 926104 250 4138 0 50 6 1078 7 5 237 3 50 100 5 9987 7 3313 229 1 5 4 1 Measur...

Page 13: ...define the registers respectively 4015 for the first output and 4016 for the second analog output Table 12 5 4 4 Individual Characteristic of Analog Outputs The P18D transducer in version with analog...

Page 14: ...onding to set point values multiplied by the value 100 Example 1 Configuration of the individual characteristic of the first current analog output temperature The temperature conversion in the range 1...

Page 15: ...Averaging time 4005 30 s X1 for the first analog output 4007 0 2000 2000 Y1 for the first analog output 4008 0 400 0 X2 for the first analog output 4009 0 6000 6000 Y2 for the first analog output 401...

Page 16: ...converterter repeater of LUMEL S A production Derivation of the interface line is shown in the figure 3 To obtain a correct transmission it is necessary to connect the A and B line parallel with thei...

Page 17: ...2 8E1 8O1 8N1 maximal response time 500 ms The configuration of serial link parameters consists on settlement of baud rate device address and protocoll Note Each transducer connected to the communicat...

Page 18: ...Num ber bytes Value from the register 1DB0 7501 Value from the register 1DB1 7502 Control sum CRC MSB LSB MSB LSB 01h 03h 08h 41h CDh 70h A4h 41h A2h 00h 00h 83h D0h Table 6 Recording a single registe...

Page 19: ...0Fh A1h 00h 78h 04h 00h 78h 00 04 F8h 31h Device address Function Register address Number of registers Control sum CRC Hi Lo Hi Lo 01h 10h 0Fh A1h 00h 02h 13h 3Eh Table 10 Report identifying the devic...

Page 20: ...e P18D transducer the data is stored in 16 and 32 bit registers The process variables and parameters of the instrument are stored in the address space of the registers in such way that they depend on...

Page 21: ...0 bit s 1 9600 bit s 2 19200 bit s 3 38400 bit s 4 57600 bit s 5 115200 bit s 4003 Transmis sion mode of the RS 485 0 3 Description 0 RTU 8N1 1 RTU 8N2 2 RTU 8E1 3 RTU 8O1 4004 Accep tation of transmi...

Page 22: ...X1 of inp 2 w r 32768 32767 Value control inp no 2 pk X1 x100 4012 Y1 of inp 2 w r 32768 32767 Expected value for inp No 2 for pt X1 4013 X2 of inp 2 w r 32768 32767 Value control inp no 2 pk X2 x100...

Page 23: ...ettings new settings required Bit12 unsused Bit11 unsused Bit10 Marker of min max erasing write of value 1024 400h cause reset of status bit Bit9 Temprorary communication parameters short circuit ZW j...

Page 24: ...r g m3 Calculated absolute humidity 7010 7505 min T r o C Min temperature 7012 7506 max T r o C Max temperature 7014 7507 min RH r Min relative humidity 7016 7508 max RH r Max relative humidity 7018...

Page 25: ...ing 16 bit regi sters Those register have the same value like 32 bit register from range 7500 Value placed in 32 bit regi sters Name Write w readout r UNIT Name of quantity 7000 7500 ID r ID of P18D t...

Page 26: ...d rate 9600kb s mode RTU 8N2 After removing the jumper the transducer returns to previous settings or to settings changed during the operation with the jumper 7022 7511 min DP r o C Min Dew point 7024...

Page 27: ...e filter Casing made of PCV Membrane of teflon lamina ted by a film Pore size 1 m Mean filtration effect Maximal temp up to 80 o C Response time t10 90 15 s Building automation In rooms with low pollu...

Page 28: ...5 of the range absolute humidity a g m3 dew point temperature Td o C additional errors temperature influence 25 of the basic error 10 C for versions with analog outputs P18D 1 or P18D 2 error process...

Page 29: ...ility noise immunity acc to EN 61000 6 2 noise emission acc to EN 61000 6 4 Security requirements acc to EN 61010 1 installation category III pollution grade 2 phase to earth working voltage 50 V alti...

Page 30: ...language 0 without additional quality inspection certificate After agreeing with the manufacturer Table 18 P18D X XX X X Analog outputs lack 0 current 4 20 mA 1 voltage 0 10 V 2 Version standard 00 no...

Page 31: ...en used in compliance with the instructions the Manufacturer garantees to repair it free of charge 2 After the guarantee period One should turn over the transducer to repair it in a certified service...

Page 32: ...1 65 127 Zielona G ra Poland tel 48 68 45 75 100 exchange fax 48 68 45 75 508 e mail lumel lumel com pl http www lumel com pl Export Department Tel 48 68 45 75 302 or 304 Fax 48 68 325 40 91 e mail ex...

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