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GHM GROUP – Delta OHM

 | Delta Ohm S.r.l. a socio unico 

Via Marconi 5 | 35030 Caselle di Selvazzano | Padova | ITALY  
Phone +39 049 8977150 | Fax +39 049 635596 
www.deltaohm.com | [email protected]

 

 

WARRANTY

 

Delta  OHM  is  required  to  respond  to  the  "factory  warranty"  only  in  those  cases  provided  by 
Legislative Decree 6 September 2005 - n. 206. Each instrument is sold after rigorous inspections; 
if  any  manufacturing  defect  is  found,  it  is  necessary  to  contact  the  distributor  where  the 
instrument was purchased from. During the warranty period (24 months from the date of invoice) 
any  manufacturing  defects  found  will  be  repaired  free  of  charge.  Misuse,  wear,  neglect,  lack  or 
inefficient maintenance as well as theft and damage during transport are excluded. Warranty does 
not  apply  if  changes,  tampering  or  unauthorized  repairs  are  made  on  the  product.  Solutions, 
probes,  electrodes  and  microphones  are  not  guaranteed  as  the  improper  use,  even  for  a  few 
minutes, may cause irreparable damages. 
Delta OHM repairs the products that show defects of construction in accordance with the terms and 
conditions of warranty included in the manual of the product. For any dispute, the competent court 
is the Court of Padua. The Italian law and the “Convention on Contracts for the International Sales 
of Goods” apply. 

TECHNICAL INFORMATION

 

The quality level of our instruments is the result of the continuous product development. This may 
lead to differences between the information reported in the manual and the instrument you have 
purchased. In case of discrepancies and/or inconsistencies, please write to [email protected]
Delta  OHM  reserves  the  right  to  change  technical  specifications  and  dimensions  to  fit  the 
product requirements without prior notice. 

DISPOSAL INFORMATION

 

 

Electrical  and  electronic  equipment  marked  with  specific  symbol  in  compliance 
with 2012/19/EU Directive must be disposed of separately from household waste. 
European  users  can  hand  them  over  to  the  dealer  or  to  the  manufacturer  when 
purchasing  a  new  electrical  and  electronic  equipment,  or  to  a  WEEE  collection 
point designated by local authorities. Illegal disposal is punished by law. 

Disposing  of  electrical  and  electronic  equipment  separately  from  normal  waste  helps  to 
preserve natural resources and allows materials to be recycled in an  environmentally friendly 
way without risks to human health. 
 
 
 
 
 
 
 
 
 

RoHS

 

 
 

V1.3 

09/2021 

 

 

Summary of Contents for PMBsense-A

Page 1: ...Operating manual PM CO2 Transmitter PM B sense www deltaohm com English Keep for future reference...

Page 2: ...S 1 INTRODUCTION 3 2 TECHNICAL SPECIFICATIONS 3 3 INSTALLATION 5 3 1 ELECTRICAL CONNECTIONS 5 4 CONFIGURATION AND MEASUREMENT 8 5 PROPRIETARY PROTOCOL 9 6 MODBUS RTU PROTOCOL 15 7 SAFETY INSTRUCTIONS...

Page 3: ...on request when order ing analog outputs is available The two analog outputs can be independently associ ated with any of the measured parameters The measuring circuit of the transmitter can be operat...

Page 4: ...esponse time 120 s air speed 2 m s Long term stability 5 of measurement 5 years Temperature drift 1 ppm C General specifications Output RS485 with Modbus RTU or ASCII proprietary protocol Only PMsense...

Page 5: ...escription 3 1 ELECTRICAL CONNECTIONS The transmitter has a M12 8 pole circular connector and uses the CPM12 8PM op tional cables with M12 8 pole connector on one side and open wires on the other side...

Page 6: ...are short circuited inside the transmitter The cable shield is not connected to the M12 connector To ensure a good noise immunity it is recommended to connect the cable shield to ground GND RS485 conn...

Page 7: ...OUT1 GND Vdc AOUT2 Fig 3 4 current analog outputs connection Voltage analog output optional only PM B sense A By default the voltage analog outputs are 0 10 V with 0 V 0 g m3 10 V 1000 g m3 The analog...

Page 8: ...riodically for the ON time The measurement is made available after 70 seconds from sensor ac tivation warm up time At the end of the ON time the measurement is frozen and the sensor is deactivated unt...

Page 9: ...USER ON must be sent first the instrument replies with USER CAL MODE ON The command CAL USER ON is automatically disabled after a few minutes of inactivity If the settings should be only read the com...

Page 10: ...ting of parity and stop bits CMWn Sets waiting time after transmission with MODBUS RTU protocol Immediate reception if n 0 violates protocol Waiting 3 5 characters if n 1 respects protocol Default Imm...

Page 11: ...second the sequence is the same described in command P5 P5 Measurements Prints the PM measurements in the following sequence PM measurement error 0 no 1 yes PM1 0 in N of particles ml PM2 5 in N of pa...

Page 12: ...register 19 RA1T n Reads the physical quantity associated to analog output 1 CA1Ln Sets n as the minimum value of the measuring range of the physical quantity associated to the analog output 1 If the...

Page 13: ...n Reads the physical quantity associated to analog output 2 CA2Ln Sets n as the minimum value of the measuring range of the physical quantity associated to the analog output 2 If the output is associ...

Page 14: ...ter must first be placed in an environment with a known CO2 concentration the value n entered in the command The value t in the reply to the command indicates the number of seconds required for the tr...

Page 15: ...ed according to what is set with CPS command or MODBUS holding register 19 16 bit Integer 2 PM10 in N of particles ml Measurement averaged according to what is set with CPS command or MODBUS holding r...

Page 16: ...every mi nute 16 bit Integer 20 PM10 in N of particles ml Measurement averaged over 15 min and updated every mi nute 16 bit Integer 21 PM1 0 in g m3 x10 Measurement averaged over 15 min and updated ev...

Page 17: ...set disabled 0 20 mA or 0 10 V default if the out put is voltage 1 offset enabled 4 20 mA or 2 10 V default if the output is current Bit 4 Sets the direct or inverse correspondence between analog outp...

Page 18: ...cal quantity associated to the analog output 1 If the output is associated to PM the value is expressed as a number of tenths e g 5 0 5 g m3 If the output is asso ciated to CO2 the value is expressed...

Page 19: ...val in seconds for the PM meas urement mode at cyclic intervals The default value is 300 5 min 16 bit Integer Unsigned 18 Setting of the sensor ON time in seconds for the PM measurement mode at cyclic...

Page 20: ...well as the specific measures described in this manual are followed The instrument proper operation and operating safety can be ensured only in the cli matic conditions specified in this manual Do not...

Page 21: ...8PM 5 or 10 m CPM12 8PM 10 standard other lengths on request RS51K Kit for connecting the transmitter RS485 output to a PC It includes the SWD10 power supply and the RS485 USB adapter with o screw ter...

Page 22: ...PM B sense 22 V1 3 NOTES...

Page 23: ......

Page 24: ...rranty included in the manual of the product For any dispute the competent court is the Court of Padua The Italian law and the Convention on Contracts for the International Sales of Goods apply TECHNI...

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