PCE Instruments PCE-CPC 50 Users guide

User Manual

Cleanroom Particle Counter

PCE-CPC 50

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Cleanroom Particle Counter PCE-CPC 50

Applications



Power battery manufacturing



Chip manufacturing



Medical and pharmaceutical



Precision machining

Description

The PCE-CPC 50 online particle counter adopts the principle of optical scattering, which can accurately detect and

calculate the number of suspended particles of different particle sizes in the air per unit volume. It can output the

particle count of 6 channels of 0.3μm, 0.5μm, 1.0μm, 2.5μm, 5.0μm and 10μm at the same time (the default unit is

pcs/m³, can be switched to pcs/L; pcs/28.3L).

Features

 4 in 1 integrated particle counter of particulate matter sensor, filter, flow sensor and pump

 Output particle number (PCS/m³, PCS/L or PCS/28.3L) in 6 channels including 0.3μm, 0.5μm, 1.0μm, 2.5μm,

5.0μm, 10μm

 Built-in high power industrial grade linear laser, accurate identification

 Built-in pump and flow sensor for constant stable sampling

 Wide working temperature -30℃~70℃, stable for different clean room application

 With voltage regulator design and EMC compliant, strong anti-static ability

 Modbus RS485,MQTT, 4-20mA output for online remote monitoring

Working Principle

When sampled particles pass through light beam (laser), there will be light scattering phenomenon. Scattered light

will be converted into electrical signal (pulse) via photoelectric transformer. The bigger particles will obtain stronger

pulse signal (peak value). Through peak value and pulse value quantity concentration of particles in each size can

be calculate. Thus, real-time measurement data is obtained through measuring quantity and strength of scattered

light.

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Specification

Cleanroom Particle Counter PCE-CPC 50 Specification

Operating principle

Light Scattering

Detect particle diameter range

>0.3μm, >0.5μm, >1.0μm, >2.5μm, > 5.0μm, >10μm

Measurement error

<100pcs/l: ±30pcs/L
>100pcs/L: ±30% of reading
Condition: 0C ~ 40C,50+10%RH

(0°C ~ 40°C, 50 ±10%RH. Reference instrument TSI 9306. TSI 9306
count efficiency 50% @ 0.3 µm and 100% for particles >0.45 µm)

Timeto

first reliable reading

≤8s

Sampling interval

1s

Working condition

0℃～45℃; 0～95%RH (non-condensing)

Storage condition

-20~60℃, 0~95%RH (non-condensing)

Working current

≤1A

Communication

RS485 (standard)

RJ45 (standard)

4~20mA (standard)

Lifetime

≥3 years

Sampling flow rate

2.83L/min

Standard

Comply with JJF 1190-2008

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Product Appearance and Pin Definition Function

Interface 1

No.

PIN

Description

Connector:
KF2EDGRM-3.81-6P­14-curved needle

Insertion:

KF2EDGKM-3.81-6P­14

1

VCC

Power terminal (+12VDC)

2

GND

Power terminal (GND)

3TBCommunication interface (RS485_TB)

4TACommunication interface (RS485_TA)

Interface 2

RJ45

Connector:
HR911105A
(Fusida)

1

I1 +

I1 Positive pole

>0.5um channel

2

I1 -

I1 Negative pole

3

I2 +

I2 Positive pole

>1.0um channel

Interface3

Interface2

Interface1

Reset Button

1. Product dimensions (unit: mm, tolerance: ±2 mm)

2. Pin Definition Diagram

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Interface 3

Connector:
KF2EDGRM-3.81-6P­14-curved needle

Insertion:
KF2EDGKM-3.81-6P­14

4

I2 -

I2 Negative pole

5

I3 +

I3 Positive pole

>2.5um channel

6

I3 -

I3 Negative pole

7

I4 +

I4 Positive pole

>5.0um channel

8

I4 -

I4 Negative pole

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Installation Instruction

When this product is installed and used in the system, the air flow of the air inlet and air outlet should be guaranteed to

Air Inlet

be smooth; in order to avoid the dust deposition on the surface of the sensitive device during use, which will affect the

test accuracy of the sensor, it is recommended to install the sensor in the following way.

Recommended installation method:

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Precautions for Use

※ The instrument is forbidden to be used in environments with high dust concentration, environments containing

moisture, oil and corrosive substances, and environments with high temperatures exceeding the allowable use.

※ Do not block the air inlet and outlet to avoid damage to the air pump.

※ The product is an integral part, users should not disassemble it to prevent irreversible damage.

※ Do not cause great vibration to the product, so as not to affect the internal air tightness.

※ The device cannot run continuously, which will shorten the service life of the product.

This product contains Class IIIB laser products, which contain laser radiation, avoid direct exposure to the eyes. Do

not remove the case or cover. The warning signs are as following:

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1 Protocol overview

Communication Protocol

1.1 Serial RS485 communication protocol

1) The data of this protocol are all hexadecimal data. For example, "46" is [70] in decimal.

2) [xx] is single-byte data (unsigned, 0-255); double-byte data high byte is in front and low byte is behind.

3) Baud rate: 9600b/s; data bits: 8 bits; stop bits: 1 bit; parity bit: none.

2 UART serial communication protocol format

The device adopts the Modbus RTU communication protocol, and the requirements are as follows:

1) The device acts as a slave;

2) The Modbus 03 function code (Read Holding Registers) can be used to read the device status and data;

the Modbus 06 function code (Preset Single Register) can be used to set the device status.

3) If the function code in the sent message does not meet the requirements, the device will reply the error

code 01 (ILLEGAL FUNCTION) through the 81 function code message; if the request address in the sent

message does not meet the requirements, the device will report the 81 function code. The text reply error

code 02 (ILLEGAL DATA ADDRESS) notification.

3 Device factory default settings

1) The factory address is 01 by default.

2) The factory default is intermittent working mode. (Work 1 min/ Sleep 4 min)

3) The factory defaults all user coefficients are 1.0000.

4) The factory default setting control flow rate is 2.83 L/min (cannot be changed at will).

4 Check code

CRC-16 (Modbus), high byte first, low byte after.

5 Register address table

Restriction Description

1) Read-only registers and readable and writable registers are not allowed to overlap.

2) Only function of writing a single register is implemented, and writing multiple registers is not available.

3) The total number of registers is limited, currently 32 input registers and 32 holding registers are supported.

4) The current version does not support file transfer with a large amount of data.

5) See Table 1 and Table 2 for register details, all registers are 16-bit word, and the register address is

register number-1.

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Table 1: Input Registers

Data No.

Address

Definition

Explanation

IR1

00H

Version No. (Enlarge 100)

IR2

01H

Reserve

IR3

02H

Reserve

IR4

03H

The number of particles >0.3μm

≥0.3μm particle quantity high byte

IR5

04H

The number of particles >0.3μm

≥0.3μm particle quantity low byte

IR6

05H

The number of particles >0.5μm

≥0.5μm particle quantity high byte

IR7

06H

The number of particles >0.5μm

≥0.5μm particle quantity low byte

IR8

07H

The number of particles >1.0μm

≥1.0μm particle quantity high byte

IR9

08H

The number of particles >1.0μm

≥1.0μm particle quantity low byte

IR10

09H

The number of particles >2.5μm

≥2.5μm particle quantity low byte

IR11

0AH

The number of particles >2.5μm

≥2.5μm particle quantity low byte

IR12

0BH

The number of particles >5.0μm

≥5.0μm particle quantity high byte

IR13

0CH

The number of particles >5.0μm

≥5.0μm particle quantity low byte

IR14

0DH

The number of particles >10μm

≥10μm particle quantity high byte

IR15

0EH

The number of particles >10μm

≥10μm particle quantity low byte

IR16

0FH

Reserve

IR17

10H

Reserve

IR18

11H

Reserve

IR19

12H

Reserve

IR20

13H

Reserve

IR21

14H

Reserve

IR22

15H

Reserve

IR23

16H

Reserve

IR24

17H

Gas flow value

Actual gas flow value multiplied by 100

IR25

18H

Reserve

IR26

19H

Reserve

IR27

1AH

Reserve

IR28

1BH

Reserve

IR29

1CH

Reserve

IR30

1DH

Reserve

IR31

1EH

Reserve

IR32

1FH

Reserve

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Table 2: Holding Registers

Data No.

Address

Definition

Explanation

IR1

00H

Reserve

IR2

01H

Reserve

IR3

02H

Address setting register

Slave address (1-247)

IR4

03H

Reserve

IR5

04H

Reserve

IR6

05H

Reserve

IR7

06H

>0.3μm particles user coefficient

Reserve

IR8

07H

>0.5μm particles user coefficient

Reserve

IR9

08H

>1.0μm particles user coefficient

Reserve

IR10

09H

>2.5μm particles user coefficient

Reserve

IR11

0AH

>5.0μm particles user coefficient

Reserve

IR12

0BH

>10μm particles user coefficient

Reserve

IR13

0CH

Reserve

IR14

0DH

Device intermittent stop time

Set the device intermittent

stop time (min)

IR15

0EH

Device control traffic size

Actual set gas flow value

multiplied by 100

IR16

0FH

Reserve

IR17

10H

Reserve

IR18

11H

Reserve

IR19

12H

Reserve

IR20

13H

Output unit

3 output units: pcs/m³,

pcs/L, pcs/28.3L

IR21

14H

Working mode

2 working modes:

continues measurement,

single accumulated count

mode

IR22

15H

Reserve

IR23

16H

Reserve

IR24

17H

Reserve

IR25

18H

Reserve

IR26

19H

Reserve

IR27

1AH

Reserve

IR28

1BH

Reserve

IR29

1CH

Reserve

IR30

1DH

Reserve

IR31

1EH

Reserve

IR32

1FH

Reserve

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6 Host communication protocol format

Function

code description

The PCE-CPC 50 supports the following function codes:

0x03: read holding register

0x04: read input register

0x06: write a single register

7 Command example

Application conditions

1) Assuming a single sensor.

2) All data are hexadecimal data, and DFX nee to be converted to decimal when calculating data.

3) Symbol description:

1

IP is the device address.

2

CRC16 is MODBUSCRC16 two-byte check, the high byte is in the front and the low byte is in the back.

3

CS is 0-ADD8 and check, the lowest byte of the previous data and +CS result is 0x00.

4

DF1 DF2 DF3 DF4 represent uncertain data.

7.1 Read >0.3um, >0.5um, >1.0um, >2.5um >5.0um, >10um of particles in each channel

7.7.1 Read >0.3μm particle count:

Send

: IP 04 00 03 00 02 CRC16

Answer: IP 04 04 DF1 DF2 DF3 DF4 CRC16

Description: >0.3μm particle count = DF1*256^3+DF2*256^2+DF3*256+DF4 (pcs/ m³)

7.1.2 Read >0.5μm particle count:

Send

: IP 04 00 05 00 02 CRC16

Answer: IP 04 04 DF1 DF2 DF3 DF4 CRC16

Description: >0.5 μm particle count = DF1*256^3+DF2*256^2+DF3*256+DF4 ( pcs/ m³)

7.1.3 Read >1.0μm particle count:

Send

: IP 04 00 07 00 02 CRC16

Answer: IP 04 04 DF1 DF2 DF3 DF4 CRC16

Description: >1.0 μm particle count = DF1*256^3+DF2*256^2+DF3*256+DF4 ( pcs/ m³)

7.1.4 Read >2.5μm particle count:

Send: IP 04 00 09 00 02 CRC16

Answer: IP 04 04 DF1 DF2 DF3 DF4 CRC16

Description: >2.5μm particle count = DF1*256^3+DF2*256^2+DF3*256+DF4 (pcs/m³)

7.1.5 Read >5.0μm particle count:

Send

: IP 04 00 0B 00 02 CRC16

Answer: IP 04 04 DF1 DF2 DF3 DF4 CRC16

Description: >5.0μm particle count = DF1*256^3+DF2*256^2+DF3*256+DF4 ( pcs/ m³)

7.1.6 Read >10μm particle count:

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Send

: IP 04 00 0D 00 02 CRC16

Answer: IP 04 04 DF1 DF2 DF3 DF4 CRC16

Description: >10μm particle count = DF1*256^3+DF2*256^2+DF3*256+DF4 ( pcs/ m³)

7.2 Read real-time gas flow value

Send

: IP 04 00 17 00 01 CRC16

Answer: IP 04 02 DF1 DF2 CRC16

Description: Real-time gas flow value = (DF1*256+DF2)/100（L/min）

7.3 Continuously read input register data

Send: IP 04 00 03 00 15 CRC16

Answer: IP 04 2A DF1~DF46 CRC16

Description:

>0.3μm particle count = DF1*256^3+DF2*256^2+DF3*256+DF4 ( pcs/m³)

>0.5μm particle count = DF5*256^3+DF6*256^2+DF7*256+DF8 ( pcs/ m³)

>1.0μm particle count = DF9*256^3+DF10*256^2+DF11*256+DF12 ( pcs/ m³)

>2.5μm particle count = DF13*256^3+DF14*256^2+DF15*256+DF16 ( pcs/ m³)

>5.0μm particle count = DF17*256^3+DF18*256^2+DF19*256+DF20 ( pcs/ m³)

>10μm particle count = DF21*256^3+DF22*256^2+DF23*256+DF24 ( pcs/ m³)

Real-time gas flow value = (DF41*256+DF42)/100 (L/min)

7.4 Read >0.3um, >0.5um, >1.0um, >2.5um >5.0um, >10um of particles user coefficient in each channel

7.4.1 Read >0.3μm particle count

：

Send: IP 03 00 06 00 01 CRC16

Answer: IP 03 02 DF1 DF2 CRC16

Description: >0.3μm particles user coefficient= (DF1*256+DF2)/10000

7.4.2 Read >0.5μm particle count

：

Send: IP 03 00 07 00 01 CRC16

Answer: IP 03 02 DF1 DF2 CRC16

Description: >0.5μm particles user coefficient= (DF1*256+DF2)/10000

7.4.3 Read >1.0μm particle count

：

Send: IP 03 00 08 00 01 CRC16

Answer: IP 03 02 DF1 DF2 CRC16

Description: >1.0 μm particles user coefficient= (DF1*256+DF2)/10000

7.4.4 Read >2.5μm particle count

：

Send: IP 03 00 09 00 01 CRC16

Answer: IP 03 02 DF1 DF2 CRC16

Description: >2.5 μmparticles user coefficient= (DF1*256+DF2)/10000

7.4.5 Read >5.0μm particle count

：

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Send: IP 03 00 0A 00 01 CRC16

Answer: IP 03 02 DF1 DF2 CRC16

Description: >5.0 μmparticles user coefficient= (DF1*256+DF2)/10000

7.4.6 Read >10μm particle count

：

Send: IP 03 00 0B 00 01 CRC16

Answer: IP 03 02 DF1 DF2 CRC16

Description: >1.0 μm particles user coefficient= (DF1*256+DF2)/10000

7.5 Read output unit

Send: IP 03 00 13 00 01 CRC16

Answer: IP 03 02 00 DF1 DF2 CRC16

Description: output particles number unit, when DF=0, output unit is pcs/L; when DF=1, output unit is pcs/m³;
when DF=2, output unit is pcs/28.3L.

7.6 Read working mode

Send: IP 03 00 14 00 01 CRC16

Answer: IP 03 02 00 DF1 CRC16

Description: DF1=0 is continuous measurement mode, and real-time measurement values will be continuously

output. DF1 = 1 is the single cumulative counting mode. When the output unit is pcs/L, the detection value will

be output after 21 seconds of reading; when the output unit is pcs/m³, the output detection value of 5 minutes

can be read; when the output unit is pcs/28.3L, the output detection value of 60 seconds will be read. When

working mode is set, the parameter is not saved after power off. After the device is powered on again, the

default working mode is restored: Continuous measurement mode. In the single cumulative counting mode,

the device carries out a fixed time measurement, and the output value of the device does not change after the

single reading. If you need to measure again, you need to send the set working mode command again, or

switch to continuous measurement mode

7.7 Confirm device address

Send: IP 03 00 02 00 01 CRC16

Answer: IP 03 02 00 DF1 CRC16

Description: Device address is DF1

7.8 Read the intermittent operation stop time of the device

Send:

IP 03 00 0D 00 01 CRC16

Answer: IP 03 02 DF1 DF2 CRC16

Description: Equipment intermittent stop time = DF1*256+DF2 (min)

7.9 Read device setting flow size

Send: IP 03 00 0E 00 01 CRC16

Answer: IP 03 02 DF1 DF2 CRC16

Description: Device setting flow size=(DF1*256+DF2)/100 (L/min)

7.10 Continuously read input register data

Send: IP 03 00 02 00 0D CRC16

Answer: IP 03 1A DF1~DF26 CRC16

Description: Device address:DF2

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>0.3μm particle count user coefficient = (DF9*256+ DF10)/1 0 0 00

>0.5μm particle count user coefficient = (DF11*256+DF12) /100 0 0

>1.0μm particle count user coefficient = (DF13*256+DF14) /10 0 0 0

>2.5μm particle count user coefficient = (DF15*256+DF16) /10 0 0 0

>5.0μm particle count user coefficient = (DF17*256+DF18) /10 0 0 0

>10μm particle count user coefficient = (DF19*256+DF20) /10 0 0 0

Device stop operation time= DF23*256+DF24 (min)

Control device setting flow rate=(DF25*256+DF26)/100 (L/min)

7.11 Modify >0.3μm, >0.5μm, >1.0μm, >2.5μm, >5.0μmm, >10μm of particles user coefficient in each channel

7.11.1 Modify >0.3μm of particles user coefficient in each channel

Send: IP 06 00 06 DF1 DF2 CRC16

Answer: IP 06 00 06 DF1 DF2 CRC16

Description: >0.3μm particle quantity user coefficient =(DF1*256+DF2)/10000

7.11.2 Modify >0.5μm of particles user coefficient in each channel

Send: IP 06 00 07 DF1 DF2 CRC16

Answer: IP 06 00 07 DF1 DF2 CRC16

Description: >0.5μm particle quantity user coefficient =(DF1*256+DF2)/10000

7.11.3 Modify >1.0μm of particles user coefficient in each channel

Send: IP 06 00 08 DF1 DF2 CRC16

Answer: IP 06 00 08 DF1 DF2 CRC16

Description: >1.0μm particle quantity user coefficient =(DF1*256+DF2)/10000

7.11.4 Modify >2.5μm of particles user coefficient in each channel

Send: IP 06 00 09 DF1 DF2 CRC16

Answer: IP 06 00 09 DF1 DF2 CRC16

Description: >2.5μm particle quantity user coefficient =(DF1*256+DF2)/10000

7.11.5 Modify >5.0μm of particles user coefficient in each channel

Send: IP 06 00 0A DF1 DF2 CRC16

Answer: IP 06 00 0A DF1 DF2 CRC16

Description: >5.0μm particle quantity user coefficient =(DF1*256+DF2)/10000

7.11.6 Modify >10μm of particles user coefficient in each channel

Send: IP 06 00 0B DF1 DF2 CRC16

Answer: IP 06 00 0B DF1 DF2 CRC16

Description: >10μm particle quantity user coefficient =(DF1*256+DF2)/10000

7.12 Modify the device address (the address range that can be set is 1-254)

Send: IP 06 00 02 00 DF1 CRC16 (IP address indicates the device address before the change)

Answer: IP 06 00 02 00 DF1 CRC16 (IP address indicates the new device address)

Description: DF1 indicates the device address to be changed

7.13 Modify the operating stop time of the equipment (the time range that can be set is 1-10000)

Send: IP 06 00 0D DF1 DF2 CRC16

Answer: IP 06 00 0D DF1 DF2 CRC16

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Description: Device stop time = DF1*256+DF2 (min)

7.14 Modify the flow rate set by the control device (the flow rate can be set in the range of 2.0L/min

–

3.5L/min)

Send: IP 06 00 0E DF1 DF2 CRC16

Answer: IP 06 00 0E DF1 DF2 CRC16

Description: The modified flow rate=(DF1*256+DF2)/100 (L/min)

7.15 Set output unit

Send: IP 06 00 13 DF1 DF2 CRC16

Answer: IP 06 00 13 DF1 DF2 CRC16

Description: The modified output unit=(DF1*256+DF2)/100 (L/min),support 0 (pcs/L), 1 (default pcs/m³)，

2(pcs/28.3L); set output unit is restored after power off.

7.16 Set working mode

Send: IP 06 00 14 DF1 DF2 CRC16

Answer: IP 06 00 14 DF1 DF2 CRC16

Description: The modified working mode=(DF1*256+DF2), support 0 (continues measurement), 1 (single

cumulative counting mode); set output unit is not saved after power off. When working mode is set, the

parameter is not saved after power off. After the device is powered on again, the default working mode is

restored: Continuous measurement mode. In the single cumulative counting mode, the device carries out a

fixed time measurement, and the output value of the device does not change after the single reading. If you

need to measure again, you need to send the set working mode command again, or switch to continuous

measurement mode

7.17 Query device address

Send: 11 02 55 FF CS

Answer: 16 02 55 DF1 CS

Description: In the running mode, the query device address is DF1

7.18 Query the software version number

Send: 11 01 1E CS

Answer: 16 0E 1E DF1 DF2 DF3 DF4 DF5 DF6 DF7 DF8 DF9 DF10 DF11 DF12 DF13 CS

Description: The version number is DF1-DF13, the ASCII string is the software version number

7.19 Set 4 channel range of 4-20mA

Send: 11 06 F0 DF1 DF2 DF3 DF4 DF5 CS

Answer: 16 06 F0 DF1 DF2 DF3 DF4 DF5 CS

Description:

When DF1=0, current modified channel is PM0.5, corresponding measurement range of

4~20mA=DF2*256*256*256+DF3*256*256+DF4*256+DF5

When DF1=1, current modified channel is PM1.0, corresponding measurement range of

4~20mA=DF2*256*256*256+DF3*256*256+DF4*256+DF5

When DF1=2, current modified channel is PM2.5, corresponding measurement range of

www.gassensor.com.cn

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4~20mA=DF2*256*256*256+DF3*256*256+DF4*256+DF5

When DF1=3, current modified channel is PM5.0, corresponding measurement range of

4~20mA=DF2*256*256*256+DF3*256*256+DF4*256+DF5

The range will automatically update the corresponding range according to the set unit. Therefore, it is

recommended to confirm (query) the current output unit before setting the measurement range. After the

range setting will be saved.

The default output unit is pcs/L, 4~ 20mA corresponding default output unit measurement ranges are:

PM0.5->35000000pcs/L, PM1.0->8000000pcs/L, PM2.5->3000000pcs/L, PM5.0->300000pcs/L

7.20 Query MQTT server IP and port number

Send: 11 01 67 CS

Answer: 16 07 67 DF1 DF2 DF3 DF4 DF5 DF6 CS

Description: MQTT server IP and port number format: [IP1]:[IP2]:[IP3]:[IP4]:[PORT]

IP1=DF1, IP2=DF2, IP3=DF3, IP4=DF4, PORT=DF5*256+DF6

7.21 Modify MQTT server IP and port number

Send: 11 07 66 DF1 DF2 DF3 DF4 DF5 DF6 CS

Answer: 16 01 66 83

Description: MQTT server IP and port number format: [IP1]:[IP2]:[IP3]:[IP4]:[PORT]

IP1=DF1, IP2=DF2, IP3=DF3, IP4=DF4, PORT=DF5*256+DF6

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MQTT Communication Protocol

1 Protocol overview

Directions

Topic

Description

Server->MCU

/productID/deviceID/function/invoke

Server sen the instant command (CMD-

1~CMD-10)

MCU->Server

/productID/deviceID/function/invoke/reply

Reply to the server ‘s sending command

(ACK) : notifies the server of the received

number

According to (CMD-999)

MCU->Server

/productID/deviceID/properties/report

Device periodically reports data, cycle

is intermittent operation cycle (configurable)

(CMD-168)

Repones to data sent by the server

(CMD-101 ~ CMD-110)

Key value

Types

Description

cmd

String

Command number

 This device support DHCP protocol, can obtain the IP address automatically.

 Support the MQTT protocol version: MQTT V3.1.1.

 Using JSON data format.

 Support device calibration instructions.

 Default IP address and port number connected to the MQTT server: 39.108.78.19:1883 (which can be

modified using RS485)

2 Topic List

3 Authentication Definition

Product ID: PCE-CPC 50

deviceID: Device factory sn

secureId: sifangguangdian

secureKey: 123456

var clientId = deviceID(device SN)

var username = secureId+"|"+deviceID; // Concatenate user password

var password = md5(username+"|"+secureKey); // Use md5 to generate the abstract

4 Rule of Message

4.1 Messages are delivered in a uniform format where the inputs object is the content of the message.

All send instruction contents will be in inputs.

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inputs

Object

Downlink message content

desired

Object

Uplink message content

messageId

Otring

Message Id

Note: All descending instructions must contain the "messageId" and "inputs" fields; and the "inputs" field must

Command

Description

CMD-1

Read particle count

CMD-2

Read the real-time gas flow value

CMD-3

/

CMD-4

Read the particle quantity coefficient

CMD-5

/

CMD-6

Read the intermittent operation & stop time of the device

CMD-7

Query the SN code and firmware version

CMD-8

Modify device parameters

Command

Description

CMD-101

Upload the particle count

CMD-102

Upload Real-time gas flow value

CMD-103

/

CMD-104

Upload the particle quantity coefficient

CMD-105

/

CMD-106

Upload the intermittent operation stop time of the device

CMD-107

Upload SN code and firmware version

CMD-108

Modify the device parameter response

CMD-168

Periodically report the data automatically

CMD-999

Uplink ACK(Acknowledgement message of receiving the instruction,
which informs the server that the instruction was received）

Parameter

Type

Description

-

-

-

begin with cmd field. messageId of the uplink ACK = messageId of the downlink ACK

4.2 Command List

MCU->Server (Downlink)

MCU->Server (Uplink)

5 Instruction specification

5.1 Read particle count CMD-1

Description: Read >0.3um, >0.5um, >1.0um, >2.5um, >5.0um, >10um of particles count in each channel

Downlink command：

Example：

topic : /prodcutID/deviceID/function/invoke

{
"messageId":"1574326733176995841",
"deviceId" :"173072083110001",
"timestamp":1664183717422,
"functionId":"CMD1",
"messageType":"INVOKE_FUNCTION",
"inputs":[{"cmd":"CMD-1"}]
}

Uplink ACK (Acknowledgement message of receiving the instruction, which informs the server that the
instruction was received)：

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TOPIC：/prodcutID/deviceID/function/invoke/reply

Parameter

Type

Description

particles_0.3um

Number

>0.3μm particle count

particles_0.5um

Number

>0.5μm particle count

particles_1.0um

Number

>1.0μm particle count

particles_2.5um

Number

>2.5μm particle count

particles_5.0um

Number

>5.0μm particle count

particles_10um

Number

>10μm particle count

Unit

String

Unit (pcs/m³by default)

Parameter

Type

Description

-

-

-

Parameter

Type

Description

gas_flow

Number(Floating-point value)

real-time gas flow value

unit

String

real-time gas flow (Unit: L/min)

{
"messageId":"1574326733176995841",
"cmd": "CMD-999",
"output":"success"
}

Uplink data

：

topic : /prodcutID/deviceID/properties/report

{
"cmd": "CMD-101",
"desired":{
"particles_0.3um" : 123,
"particles_0.5um" : 123,
"particles_1.0um" : 123,
"particles_2.5um" : 123,
"particles_5.0um" : 123,
"particles_10um" : 123,

"unit":"pcs/m³ "

}

}

5.2 Read the real-time gas flow value CMD-2

Description: Read the real-time gas flow value,Unit is (L/min)
Downlink command：

topic : /prodcutID/deviceID/function/invoke
{
"messageId":"1574326733176995841",
"deviceId":"173072083110001",
"timestamp":1664183717422,
"functionId":"CMD2",
"messageType":"INVOKE_FUNCTION",
"inputs":[{"cmd":"CMD-2"}]
}

Uplink ACK (Acknowledgement message of receiving the instruction, which informs the server that the
instruction was received)：

TOPIC：/prodcutID/deviceID/function/invoke/reply
{
"messageId":"1574326733176995841",
"cmd": "CMD-999",
"output":"success"
}

Uplink data

：

topic :/prodcutID/deviceID/properties/report
{

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"cmd":"CMD-102",

Parameter

Type

Description

-

-

-

Parameter

Type

Description

particles_coef_0.3um

Number-integer number

>0.3μm particle count user coefficient,10000 times larger

particles_coef_0.5um

Number- integer number

>0.5μm particle count user coefficient,10000 times larger

particles_coef_1.0um

Number- integer number

>1.0μm particle count user coefficient,10000 times larger

particles_coef_2.5um

Number- integer number

>2.5μm particle count user coefficient,10000 times larger

particles_coef_5.0um

Number- integer number

>5.0μm particle count user coefficient,10000 times larger

particles_coef_10um

Number- integer number

>10μm particle count user coefficient,10000 times larger

Parameter

Type

Description

-

-

-

"desired":{
"gas_flow" : 2.83
"unit" : "L/min"

}
}

5.3 Read the particle quantity coefficient CMD-4

Description: Read the particle quantity coefficient
Downlink command：

topic : /prodcutID/deviceID/function/invoke
{
"messageId":"1574326733176995841",
"deviceId":"173072083110001",
"timestamp":1664183717422,
"functionId":"CMD4",
"messageType":"INVOKE_FUNCTION",
"inputs":[{"cmd":"CMD-4"}]
}

Uplink ACK (Acknowledgement message of receiving the instruction, which informs the server that the
instruction was received)：

TOPIC：/prodcutID/deviceID/function/invoke/reply
{
"messageId":"1574326733176995841",
"cmd": "CMD-999",
"output":"success"

}

Uplink data：

topic : /prodcutID/deviceID/properties/report
{

" cmd": "CMD-104",
"desired":{

"particles_coef_0.3um" : 123,
"particles_coef_0.5um" : 123,
"particles_coef_1.0um" : 123,
"particles_coef_2.5um" : 123,
"particles_coef_5.0um" : 123,
"particles_coef_10um" : 123

}

}

5.4 Read the intermittent operation stop time of the device CMD-6

Description: Read the intermittent operation stop time of the device
Downlink command：

topic : /prodcutID/deviceID/function/invoke
{

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"messageId":"1574326733176995841",

Parameter

Type

Description

work_stop_time

Number-Shaping number

Available to set, unit is minute.

Cannot set it to be 0, otherwise the setting value is invalid.

Work_run_time

Number- Shaping number

The value is set to 1min.

Actively upload MQTT data once the run time is over

Parameter

Type

Description

-

-

-

Parameter

Type

Description

sn

String

Device sn

sw_version

String

sw version

"deviceId":"173072083110001",
"timestamp":1664183717422,
"functionId":"CMD6",
"messageType":"INVOKE_FUNCTION",
"inputs":[{"cmd":"CMD-6"}]
}

Uplink ACK (Acknowledgement message of receiving the instruction, which informs the server that the
instruction was received)：

TOPIC：/prodcutID/deviceID/function/invoke/reply
{
"messageId":"1574326733176995841",
"cmd": "CMD-999",
"output":"success"

} Uplink data：

topic : /prodcutID/deviceID/properties/report
{

"cmd": "CMD-106",
"desired":{

"work_stop_time" : 10,

"work_run_time" : 1

}

}

5.5 Query the SN code and firmware version CMD-7

Description: Query the SN code and firmware version
Downlink command:

topic : /prodcutID/deviceID/function/invoke
{
"messageId":"1574326733176995841",
"deviceId":"173072083110001",
"timestamp":1664183717422,
"functionId":"CMD7",
"messageType":"INVOKE_FUNCTION",
"inputs":[{"cmd":"CMD-7"}]
}

Uplink ACK (Acknowledgement message of receiving the instruction, which informs the server that the
instruction was received)：

TOPIC：/prodcutID/deviceID/function/invoke/reply
{
"messageId":"1574326733176995841",
"cmd": "CMD-999",
"output":"success"
}

Uplink data：

topic : /prodcutID/deviceID/properties/report
{

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"cmd": "CMD-107",

Parameter

Type

Description

particles_coef_0.3um

Number

>0.3μm particle count user coefficient, range 1000~65000,10000 times

larger, actual coefficient is 0.1~6.5

particles_coef_0.5um

Number

>0.5μm particle count user coefficient, range 1000~65000,10000 times

larger, actual coefficient is 0.1~6.5

particles_coef_1.0um

Number

>1.0μm particle count user coefficient, range 1000~65000,10000 times

larger, actual coefficient is 0.1~6.5

particles_coef_2.5um

Number

>2.5μm particle count user coefficient, range 1000~65000,10000 times

larger, actual coefficient is 0.1~6.5

particles_coef_5.0um

Number

>5.0μm particle count user coefficient, range 1000~65000,10000 times

larger, actual coefficient is 0.1~6.5

particles_coef_10um

Number

>10μm particle count user coefficient, range 1000~65000,10000 times

larger, actual coefficient is 0.1~6.5

work_stop_time

Number

Device stop time ,unit is min.

Parameter

Type

Description

result

String

success or failed

"desired":{
"sn" : "123456789",
"sw_version" : "xxx"
}
}

5.6 Modify device parameters CMD-8

Description: Modify device parameters
Downlink command：

topic : /prodcutID/deviceID/function/invoke
{
"messageId":"1574326733176995841",
"deviceId":"173072083110001",
"timestamp":1664183717422,
"functionId":"CMD8",
"messageType":"INVOKE_FUNCTION",
"inputs":[
{"cmd":"CMD-8"},
{"particles_coef_1.0um":12345},
{"work_stop_time": 2}
]

}

Uplink ACK (Acknowledgement message of receiving the instruction, which informs the server that the
instruction was received)：

TOPIC：/prodcutID/deviceID/function/invoke/reply
{
"messageId":"1574326733176995841",
"cmd": "CMD-999",
"output":"success"
}

Uplink data：

topic : /prodcutID/deviceID/properties/report
{
"sn" : "123456789",
"cmd": "CMD-108",
"desired":{
"result" : "success"
}
}

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5.7 Automatically report the data periodically CMD-168

Parameter

Type

Description

particles_0.3um

Number

>0.3μm particle count

particles_0.5um

Number

>0.5μm particle count

particles_1.0um

Number

>1.0μm particle count

particles_2.5um

Number

>2.5μm particle count

particles_5.0um

Number

>5.0μm particle count

particles_10um

Number

>10μm particle count

Unit

String

Unit (pcs/m³, default)

The device will automatically report data periodically without the server sending request data packets
The automatic report period is the intermittent operation period (set by CMD-8). After one working period is
complete, the automatic report is uploaded once
Uplink data list:

topic : /prodcutID/deviceID/properties/report
{
"cmd": "CMD-168",

"desired":{

"particles_0.3um" : 123,
"particles_0.5um" : 123,
"particles_1.0um" : 123,
"particles_2.5um" : 123,
"particles_5.0um" : 123,
"particles_10um" : 123,
"unit": "pcs/m3",

}
}

Contact

If you have any questions, suggestions or technical problems, please do not hesitate to contact us. You will find the relevant contact
information at the end of this user manual.

Disposal

For the disposal of batteries in the EU, the 2006/66/EC directive of the European Parliament applies. Due to the contained

pollutants, batteries must not be disposed of as household waste. They must be given to collection points designed for that purpose.

In order to comply with the EU directive 2012/19/EU we take our devices back. We either re-use them or give them to a recycling
company which disposes of the devices in line with law.

For countries outside the EU, batteries and devices should be disposed of in accordance with your local waste regulations.

If you have any questions, please contact PCE Instruments.

PCE Instruments contact information

Germany

PCE Deutschland GmbH
Im Langel 26
D-59872 Meschede
Deutschland
Tel.: [phone]
Fax: [phone]
[e-mail]
www.pce-instruments.com/deutsch

United Kingdom

PCE Instruments UK Ltd
Trafford House
Chester Rd, Old Trafford Manchester M32 0RS
United Kingdom
Tel: [phone]
Fax: [phone]
[e-mail]
www.pce-instruments.com/english

The Netherlands

PCE Brookhuis B.V. Institutenweg 15
7521 PH Enschede
Nederland
Telefoon: [phone]
[e-mail]
www.pce-instruments.com/dutch

France

PCE Instruments France EURL
23, rue de Strasbourg
67250 Soultz-Sous-Forets
France
Téléphone: [phone]
Numéro de fax: [phone]
[e-mail]
www.pce-instruments.com/french

Italy

PCE Italia s.r.l.
Via Pesciatina 878 / B-Interno 6
55010 Loc. Gragnano
Capannori (Lucca)
Italia
Telefono: [phone]
Fax: [phone]
[e-mail]
www.pce-instruments.com/italiano

United States of America

PCE Americas Inc.
1201 Jupiter Park Drive, Suite 8
Jupiter / Palm Beach
33458 FL
USA
Tel: [phone]
Fax: [phone]
[e-mail]
www.pce-instruments.com/us

Spain

PCE Ibérica S.L.
Calle Mula, 8
02500 Tobarra (Albacete) España
Tel. : [phone]
Fax: [phone]
[e-mail]
www.pce-instruments.com/espanol

Turkey

PCE Teknik Cihazları Ltd.Şti.
Halkalı Merkez Mah.

Pehlivan Sok. No.6/C
34303 Küçükçekmece - İstanbul Türkiye
Tel: [phone]
Faks: 0212 705 53 93
[e-mail]
www.pce-instruments.com/turkish

Denmark

PCE Instruments Denmark ApS
Birk Centerpark 40
7400 Herning
Denmark
Tel.: [phone]
[e-mail]
www.pce-instruments.com/dansk