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Smart Photoionization Detector Module PIDS3 

User Manual

 

 

PIDS3 - User Manual (en) - 1.03.docx 

Analytical Control Instruments GmbH, Volmerstraße 9A, 12489 Berlin, Germany, www.aci-berlin.com 

 

Page 43 of 58 

 

12

 

Modbus Communication 

 

The communication is compatible with the Modbus specification. 

Signal level 

RS485 differentials level 

Parameter 

115200 Baud, 57600 Baud, 34800 Baud, 19200 Baud, 9600 Baud  
Modes ASCII and RTU 
Device unique address 
Termination resistor enabling 

 

The default values are: 

Baud rate 

115200 

Mode 

RTU 

Gas Device unique address 

10 

Termination resistor enable 

false 

 

 

USAGE 

–

 COMM SELECT Jumper J1 

To use the MODBUS communication the jumper J1 must not be plugged. 

 

 

12.1

 

Register map 

 

Register 3xxxx 

–

 Access via function code 0x04 (read only) 

 

12.1.1

 

Module information register 

 

Name 

Access 

Register no 

Length 

Format 

Device identification 

RO 

30001 

32 byte 

String 

Device serial number 

RO 

30017 

32 byte 

String 

Measurement config 
gasname 

RO 

30033 

16 byte 

String 

Measurement config 
calibration method 

RO 

30041 

16 byte 

String 

 

 

Summary of Contents for PIDS3

Page 1: ...IDS3 User Manual PIDS3 User Manual en 1 03 docx Analytical Control Instruments GmbH Volmerstra e 9A 12489 Berlin Germany www aci berlin com Page 1 of 58 Smart Photoionization Detector Module PIDS3 Use...

Page 2: ...User Manual en 1 03 docx Analytical Control Instruments GmbH Volmerstra e 9A 12489 Berlin Germany www aci berlin com Page 2 of 58 Analytical Control Instruments GmbH Volmerstra e 9A D 12489 Berlin Ge...

Page 3: ...entative Analytical Control Instruments GmbH Volmerstra e 9A D 12489 Berlin Germany erkl rt hiermit dass das Produkt declares that the product Smart Photoionization Detector Module Version 3 Artikelnu...

Page 4: ...use 12 5 3 Liability Information 12 5 4 Safety and Precautionary Measures to be adopted 13 5 5 Permanent Instrument Warranty 14 6 Smart Photoionization Detector Modul PIDS3 briefly 15 6 1 Installation...

Page 5: ...save config data command 41 11 2 8 Module relays commands 41 11 2 9 Module lamp commands 42 11 2 10 Module sensor commands 42 12 Modbus Communication 43 12 1 Register map 43 12 1 1 Module information...

Page 6: ...nalog 4 20 mA output represents the linearized and compensated concentration value in different scaling The module is available in different measurement ranges with optional included pump and 4 20 mA...

Page 7: ...ain compounds in the tested atmosphere could contaminate the sensor In atmospheres where the device may be exposed to such materials calibration must be performed frequently to ensure that the operati...

Page 8: ...use are not pro rata i e the initial warranty period is not extended by virtue of any works carried out there under In no event will manufacturer be liable for any incidental damages consequential dam...

Page 9: ...mportant in avoiding injury or damage Observe and follow these cautions and regulations to avoid accidents and damage These terms and symbols explained below DANGER Indicates a hazardous situation whi...

Page 10: ...dity and temperature compensation at 0 60 C and 0 90 rH residual effect less than 10 Operating conditions 20 50 C 0 90 rH non condensing 10 50 C with integrated pump Storage conditions 20 60 C 0 95 rH...

Page 11: ...portant in avoiding injury or damage Observe and follow these cautions and regulations to avoid accidents and damage These terms and symbols are explained below DANGER Indicates a hazardous situation...

Page 12: ...fety instructions as well as the information for the use and operation of the product must be carefully read and observed Furthermore the national regulations applicable in the user s country must be...

Page 13: ...er overall operation of the device is to check it with a known concentration of the gas for which it has been calibrated Consequently calibration checks must be included as part of the routine inspect...

Page 14: ...racticable manufacturer reserves the right to charge for any site attendance where any fault is not found with the equipment Manufacturer shall not be liable for any loss or damage whatsoever or howso...

Page 15: ...following positions The sample gas will be conducted through the sample gas inlet A glass fiber syringe filter protects the device against material pollution Gas Inlet Type male luer Fit to tube Inne...

Page 16: ...e room under the ceiling for gases lighter than air or close to the ground for gases heavier than air Also consider how air movement may affect the ability of the device to detect gas The display on t...

Page 17: ...anical Installation Mounting The housing of Smart PID module must be mounted at the following positions Indoor or inside housings with minimum splash water protection arbitrary orientation In all othe...

Page 18: ...t or to slightly bend it to prevent water from entering NOTICE The power supply is defined as 10 28 VDC How To Install Electrical Connection 1 Open the device 2 Unscrew clamping nut at the cable gland...

Page 19: ...minal Isolated Ground Inverting Terminal 1 2 3 J1 COMM SELECT Jumper plugged in Jumper not plugged RS485 UART communication RS485 MODBUS communication Relays optional X3 1 2 3 ERROR Relay NC Relay COM...

Page 20: ...ule may be damaged flow over gas flow too high measurement result integrity loss 6 4 1 Using the internal optional pump The internal optional pump ensures ambient measurement gas flow through the PID...

Page 21: ...ID module Thereby gas and particle contamination from pump is prevented Gas flow scheme without internal optional pump 6 4 3 Using without pump NOTICE WATCH THE GAS FLOW Constant flow from active gas...

Page 22: ...s a uniform gas flow Do not enter the MEASURE state without appropriate gas flow USAGE PLACE THE MODULES IN A THERMALLY ISOLATED ENVIRONMENT The PID sensor is sensitive against fast gradients of tempe...

Page 23: ...riate commands Thereby the lamp is switched off and on and is tested On successful lamp test the MEASURE state is entered When in MEASURE state the gas flow indicator value should be around 100 When l...

Page 24: ...rement result Action values and module state Action state USAGE Modbus communication Using the modbus communication measurement data status and error information can be read out It is necessary to ena...

Page 25: ...in pA units Temperature Measurement chamber temperature may differ from ambient temperature in C units Humidity Measurement chamber humidity may differ from ambient humidity due to over temperature i...

Page 26: ...ppm result 5 ppm 0 010 ppm 0 00200 ppm 0 10 ppm result 10 ppm 0 050 ppm 0 00500 ppm 0 50 ppm result 20 ppm 0 100 ppm 0 01000 ppm 1 00 ppm result 50 ppm 0 500 ppm 0 02000 ppm 2 00 ppm result 120 ppm 1...

Page 27: ...ent config data can be read and written with UART command The dynamic resolution can be switched to raw precision by setting dynamic resolution enable false 9 1 Calibration method The module supports...

Page 28: ...it is recommended that SPAN gas concentration is in same range as the expected measurement result and fits to detection range of the module The procedure step by step Connect and start the measurement...

Page 29: ...a calibration Preparations before Calibration Calibration Test To perform a calibration you need a pressure cylinder of SPAN Gas and or ZERO Gas a flow reducer a tube and a T piece The flow reducer sh...

Page 30: ...no error as answer save pids savedata Invalid calibration values may be caused by MEASURE state not started no clean air applied during ZERO calibration step no or inappropriate calibration gas appli...

Page 31: ...face UART signal level RS485 differentials level UART parameter 115 200 Baud 8 Data no parity 1 Stop The communication is based on a serial interface The master controller manages connection and initi...

Page 32: ...DATA ETX CHK 7 CHK 0 EOT 0x01 HEX 0x02 command SPACE parameter 0x03 HEX 0x04 calculate checksum over this area SOH Start of Header 0x01 ADDR Device address 32 bit HEXSTRING 8 byte SOT Start of Text 0...

Page 33: ...static uint Crc32 byte buffer uint offset uint count const uint polynomial 0xEDB88320 uint crc uint MaxValue for uint index offset index offset count index crc buffer index for uint bit 0 bit 8 bit c...

Page 34: ...age section format The message section is formatted as ASCII text and consists of a command and a parameter A space character SPACE separates command and parameter If there are more than one value in...

Page 35: ...the module Parameter sw Software version string Example M device software S device software 1 02 030 Command device hardware device hardware hw Description Get hardware version of the module Parameter...

Page 36: ...check pids lampcheck ok Description Starts the lamp check and enters LAMP CHECK state Parameter Example M pids lampcheck S pids lampcheck ok M pids lampcheck S pids lampcheck error invalid module stat...

Page 37: ...s state 00004000 PID state bit definition Bit Meaning Bit Meaning D00 1 Module concentration under range D16 1 Current loop supply voltage low D01 1 Module concentration over range D17 1 Current loop...

Page 38: ...m D22 1 Relay ERROR error switch D07 1 Sensor eeprom error read write D23 reserved D08 1 Sensor unspecified error D24 reserved D09 reserved D25 reserved D10 1 Error start sensor D26 reserved D11 1 Err...

Page 39: ...RO gas point e g 3 850 pA curr2 compensated current of SPAN gas point e g 978 200 pA conc1 ZERO gas concentration 0 0 ppm conc2 SPAN gas concentration e g 100 0 ppm Example read active M pids calib S...

Page 40: ...s config ascii 16 19200 false S ok 11 2 5 Module current loop config commands Command pids currloop config pids currloop config sigmin sigmax Description Get or set the module current loop configurati...

Page 41: ...s savedata ok USAGE SAVING DATA Saving data may take about 100 ms Consider this period of time in UART communication timeout detection 11 2 8 Module relays commands Command pids relay state pids relay...

Page 42: ...al number text of connected lamp variant variant information text of connected lamp ontime on time of connected lamp in hours units Example M pids lampinfo S pids lampinfo C332003002 106eV 12 500 11 2...

Page 43: ...vice unique address Termination resistor enabling The default values are Baud rate 115200 Mode RTU Gas Device unique address 10 Termination resistor enable false USAGE COMM SELECT Jumper J1 To use the...

Page 44: ...ting point value PID state bit definition Bit Meaning Bit Meaning D00 1 Module concentration under range D16 1 Current loop supply voltage low D01 1 Module concentration over range D17 1 Current loop...

Page 45: ...1 Sensor error lamp module control D19 1 Current loop error control D04 1 Sensor error lamp variant D20 1 Relay ALM LO error switch D05 1 Sensor error flow sensor D21 1 Relay ALM HI error switch D06...

Page 46: ...ut which converts the physical measurement result into an electrical signal The module provides a current loop output which operates over the entire supply voltage range The most common resistor in a...

Page 47: ...gnal 20 5 mA Signal over range Error information 1 0 mA Error unspecified 2 0 mA Error PIDS module 2 2 mA Error PID sensor lamp function 2 4 mA Error PID sensor or internal comm 2 6 mA Error pump spee...

Page 48: ...s greater than 1 0 The minimum result must be greater or equal than zero and less then maximum Calculation examples for measurement result of 400 ppm Minimum result which maps to 4 mA Maximum result w...

Page 49: ...hotoionization Detector Module PIDS3 User Manual PIDS3 User Manual en 1 03 docx Analytical Control Instruments GmbH Volmerstra e 9A 12489 Berlin Germany www aci berlin com Page 49 of 58 14 Mechanical...

Page 50: ...9A 12489 Berlin Germany www aci berlin com Page 50 of 58 15 Maintenance and Service NOTICE The module contains electronic components which react sensitively to electrostatic discharge ESD Work on or...

Page 51: ...Remove the old front isolation from the PID sensor block by using a tweezer at the notch on front isolation border 4 Place the new front isolation into the PID sensor block and make sure that the curv...

Page 52: ...l en 1 03 docx Analytical Control Instruments GmbH Volmerstra e 9A 12489 Berlin Germany www aci berlin com Page 52 of 58 Replace sensor 1 Open device Remove of inner assembly is necessary 2 Flip inner...

Page 53: ...amp window and rub in a circular motion Repeat this 2 3 times 3 After cleaning process take short brake of 1 min before the lamp will be installed into PID sensor block 4 Switching on the device and a...

Page 54: ...1 0003177 PIDS3 10 6 eV High Range with CL RS485 PIDS3 R2 D0 L0 P0 S0 A1 0003180 PIDS3 10 6 eV High Range with CL RS484 Pump PIDS3 R2 D0 L0 P1 S0 A1 consist of Photoionization Sensor Module PID lamp E...

Page 55: ...www aci berlin com Page 55 of 58 17 Spare parts and Accessories PIM CPN lamp kit 10 6 eV Order code 0002954 PIM CPN lamp kit 11 8 eV Order code 0003023 PIDS3 sensor block kit Order code 0003194 PIDS3...

Page 56: ...Smart Photoionization Detector Module PIDS3 User Manual PIDS3 User Manual en 1 03 docx Analytical Control Instruments GmbH Volmerstra e 9A 12489 Berlin Germany www aci berlin com Page 56 of 58...

Page 57: ...Smart Photoionization Detector Module PIDS3 User Manual PIDS3 User Manual en 1 03 docx Analytical Control Instruments GmbH Volmerstra e 9A 12489 Berlin Germany www aci berlin com Page 57 of 58...

Page 58: ...mbH Volmerstra e 9A 12489 Berlin Germany www aci berlin com Page 58 of 58 18 Contact Analytical Control Instruments GmbH Volmerstra e 9A D 12489 Berlin Germany Analytical Control Instruments GmbH All...

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