Dwyer PMI Series Particulate Matter Transmitter User Manual

User Manual for Dwyer models including: PMI Series Particulate Matter Transmitter, PMI Series, Particulate Matter Transmitter, Matter Transmitter, Transmitter

Instruction Manual

Series PMI Particulate Matter Transmitter · Apex Industrial Solutions

Instruction Manual - DWYER INSTRUMENTS, INC.

prieš 1 dieną — The Series PMI Particulate Matter Transmitter is designed to measure indoor air quality by detecting particulate matter in an office environment or HVAC ...

DWYER INSTRUMENTS, INC.

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AQ PM

Series PMI Particulate Matter Transmitter Specifications - Installation and Operating Instructions

Bulletin AQ-PM

3-17/64 [83]

63/64 [25]

4-17/32 [115]

3-11/64 [80.5]
2-23/64 [60]

1-3/16 [30]
3-5/16 [84]

Wall mount

Wall mount with LCD

4-21/64 [110]

1-13/64 [30.6]
Wall mount
4-21/64 [110]

2-61/64 [75]

3-13/16 [97]

Ø5/32 [Ø4]
1-17/64 [32] 4-59/64 [125]
43/64 [17]

Duct mount

Duct mount with LCD

The Series PMI Particulate Matter Transmitter is designed to measure indoor air quality by detecting particulate matter in an office environment or HVAC duct. Using laser scattering technology, the Series PMI can measure particles as small as 0.3 m, making it an essential component of any indoor air quality monitoring system. The optional relay combined with the settable alarm and control parameters allow the Series PMI to be a stand-alone controller.
BENEFITS/FEATURES · Maintains healthy air supply with long term stability and accuracy · Particulate matter application independent as duct and wall mount units are
available · Low maintenance with 10 years of service life in auto mode · Minimal downtime with overvoltage protection · Easy setup with optional integral display and buttons · Saves time using removable terminal block on duct mount model · Single unit controller with alarm, control modes, and optional relay
APPLICATIONS · Educational institutions · Healthcare facilities · Corporate offices · Hotels/restaurants · Air purifiers

SPECIFICATIONS
Sensor: Laser scattering. Range: PMI-2.5: 0-500 g/m3, particle size 0.3-2.5 m; PMI-10: 0-600 g/m3, particle size 0.3-10 m. Accuracy: ±10 g/m3 @ 0-100 g/m3; ±10% reading @ 100-600 g/m³ @ 25°C, 50% RH. Resolution: 1 g/m3. Response Time: <10 s, continuous service mode. Temperature Limits: Operating: 32 to 122°F (0 to 50°C); Storage: -22 to 158°F (-30 to 70°C). Humidity Limits: 0-95% RH (non-condensing). Power Requirements: 16-28 VAC/6-35 VDC. Load Resistance: Current output: 500 ; Voltage output: 2 k. Output: Current: 4-20 mA; Voltage: 0-10 VDC; Relay: SPST 3A, 30 VDC/250 VAC; RS-485/Modbus® (RTU). Service Life: MTBF more than 3 years in continuous service mode, service life up to 8-10 years in auto (intermittent) service mode. Display: Optional 4-digit LCD. Housing Materials: Wall mount: Polycarbonate (UL 94 V-0); Duct mount: ABS and polycarbonate (UL 94 V-0). Enclosure Rating: Wall mount: IP30; Duct mount: IP65 (housing), IP30 (probe). Weight: Wall mount: 7.05 oz (200 g); Duct mount: 9.5 oz (270 g). Compliance: CE, UKCA.

DWYER INSTRUMENTS, INC.
P.O. BOX 373 · MICHIGAN CITY, INDIANA 46360, U.S.A.

Phone: 219-879-8000 Fax: 219-872-9057

www.dwyer-inst.com e-mail: info@dwyermail.com

INSTALLATION
CAUTION Hazard of eye injury. This product uses a laser particulate matter sensor and it is strictly prohibited to disassemble the unit. Direct
laser exposure is hazardous.

NOTICE

Use electrostatic discharge precautions (e.g., use of wrist straps) during installation and wiring to prevent equipment damage.

NOTICE

Avoid locations where severe shock or vibration, excessive moisture or corrosive fumes are present.

This product is suitable for common environment measurement. If it is installed in an environment exceeding the acceptable measurement range for a long period of time, it may lead to the decrease of the measurement accuracy. In any environment with high humidity, high temperature, smoke, etc., the performance of the sensor may also be decreased due to excessive contaminants, such as dust and oil mist, etc.

Choose a location with good ventilation and without strong light or vibration. Direct light or vibration can affect the accuracy of the sensor.

The unit should be powered OFF during installing and wiring. When using 24 VAC, it is strongly recommended to power the unit with an independent transformer. If sharing a 24 VAC transformer with other equipment, such as controllers, transmitters or actuators, please make sure the terminals 24 V and GND are connected correctly to avoid equipment damage that is not covered under warranty.

Surface Mounting: The wall mount models should be installed vertically on a flat surface. The installation site should be far away from any heater, cooler, fan, humidifier, dehumidifier, and other heat/cool/humidity sources. To mount the transmitter:
· Use a flathead screwdriver and insert it into the snap at the upper side of the housing. Push down gently and then open the front cover.
· Feed the cable into the housing before installing the base on the wall according to the diagram inside the front cover.
· Finish electrical connection according to the wiring diagram in Figure 3. · Snap the front cover back into place and finish the installation.

Duct Mounting

NOTICE

During assembly, installation, and wiring, all seal rings must be

applied properly and securely to ensure the whole enclosure,

including where the probe and duct meet, will be sealed. This is the only way to

prevent leaks from air sources other than the air sampling vents/holes and maintain

the IP65 rating.

To duct mount the transmitter: · First, the probe must be attached to the back of the enclosure as shown in Figure 2A by inserting the provided black seal ring in the groove located on the back of the housing. Next, align the probe latches with the cutouts on the back of the housing and gently turn it according to the direction indicated on the probe until it snaps
into place. · Mount using one of the following ways, ensuring that all sampling holes on the
probe are inserted into the duct and that the direction indicated on the front cover is the same as the direction of the air flow inside of the duct.
To install via the flange as shown in Figure 2B, drill a Ø19 mm hole in the duct, install the seal ring and the flange onto the duct using three of the four provided shorter screws. Then, insert the probe into the duct. Use the last provided short screw to lock the whole enclosure onto the flange.
To install the enclosure directly on the duct as shown in Figure 2C, drill a Ø19 mm hole on the duct, insert the probe with the seal ring, and screw the enclosure
on the duct directly using the two longer screws provided. · Remove the four screws from the front cover and lift to access the wiring. Wire
according to the wiring diagram inside the front cover. Once completed, replace the front cover.

Figure 2A

2-1/16 [52]

Ø3/4

FLOW

HOLE [19] DIRECTION

SEAL RING

Figure 1

1-19/32 [40.5]

SAMPLE

PROBE

DUCT FLANGE

BASE

Figure 2B

FRONT COVER CABLE GLAND

FLOW DIRECTION

4 [101.5] Ø3/4 HOLE [19]

SEAL DUCT
Figure 2C

ELECTRICAL NOTICE

Different models have different electrical terminals. Please wire specific model according to the wiring diagram inside the front cover.

OPERATION NOTICE

CAUTION Disconnect power supply before installation to prevent electrical shock and equipment damage.

LCD display with buttons is only available for wall mount units and does not apply for duct mount units.

Make sure all connections are in accordance with the job wiring diagram and in accordance with national and local electrical codes. Use copper conductors only.

CAUTION

Do not exceed ratings of this device, permanent damage not covered by warranty may result.

Outputs Shown in Figure 3 below is an example of a communication terminal block. Analog only models will not include terminals 5 and 6. Terminal 3 is the 0-10 V output and terminal 4 is the 4-20 mA output. For RS-485/ Modbus® communication refer to the RS-485 COMMUNICATIONS/Modbus® RTU section later in the manual.

Terminals 9 and 10 close when relay 1 is on. Terminals 9 and 10 open when relay 1 is off. For relay output setting, refer to Setting Parameters section.

BUTTON FUNCTIONS

Button

Function

Set/Save

1 23 4 56

9 10

VA
+POWER 24 VDC SUPPLY 24 VAC

BA
RS-485 9600,8,N,1 SLAVE ADD = 1 J8:120

RELAY1 OUTPUT

Figure 3: Communicating and analog terminal board

Jumpers Figure 4 shows the RS-485 terminal resistance jumper J8 description as follows:

120

TERMINAL RESISTANCE: NONE [DEFAULT] Figure 4

TERMINAL RESISTANCE: 120

The Series PMI has two working modes, automatic mode (AUTO) and continuous mode (NORMAL). AUTO mode will automatically reduce the measuring time to extend the service life of the sensor when the environment's dust concentration changes very slightly. Use the MODE jumper shown in Figure 5 to choose the desired mode. The factory default mode is AUTO.

MODE

NORMAL

AUTO NORMAL

AUTO

CONTINUOUS OPERATION MODE [NORMAL]

Figure 5

AUTOMATIC OPERATION MODE [AUTO] [DEFAULT]

Adjust/Increase
Bit Select/Decrease
Below are the corresponding instructions to set the parameters. The backlight of the LCD will turn off after 30s without any key operation. The LCD will display "----" when the settings are successful, and display "Err" when failed.
Setting Parameters (Applicable for LCD display with buttons only) Use the following instructions to set the transmitter parameters. Push to enter programming mode. The display should read "P000". Then push to select the digit and push to cycle through 0-9; follow the instructions below to enter the corresponding parameter group settings.
Reset P000 / P999 "rSt" finish.
To reset the unit to factory default settings: input "P999", then press button to display "rSt". Press the button . All factory default settings will be restored.
Check LCD backlight, LCD display, Relay Test Screen P000 / P083 display "0123" LCD backlight on/off, LCD segments
display normally and relay functions properly finish.
PMI2.5 display range (Default 0, 500) P000 / P091 XX(1) / XX(1) XX(2) /
XX(2) finish. XX(1) means low range and XX(2) means high range
PMI2.5 1 point calibration P000 / P161 X.X / X.X finish.
XX means calibration offset value. Press key to finish and display the temperature single point calibration offset. After 2 seconds, the display temperature will read the value; the display value (output) = actual measurement + offset
Relay 1 setting (default set: 2, 100, 5, 3, 1, for models with a relay) Minimum of 100; Maximum equals Max Range
P000 / P401 XX(M) / XX(M) XX(P1) / XX(P1) XX(P2) / XX(P2) XX(P3) / XX(P3) XX(P4) / XX(P4) finish. XX (M) means Mode; XX (P1) means Parameter #1; XX (P2) means Parameter #2; XX (P3) means Parameter #3; XX (P4) means Parameter #4; refer to descriptions in Table 1. The symbol "R1" will show on the display when relay 1 is actuated.

Mode Mode Description

Cancel relay alarm function

Relay actuate when input is

lower than set point

Parameter #1 Parameter #2 Parameter #3 Parameter #4 Definition

N/A

RELAY OFF

Set point

Deadband

Start delay

Stop delay

RELAY ON

Relay actuate when input is

Set point

Deadband

Start delay

Stop delay

higher than set point

RELAY OFF

Relay actuate between high and Low limit

High limit

Start delay

Stop delay

low limits

RELAY OFF

LOW LIMIT

Relay actuate outside high and Low limit low limits

High limit

Start delay

Stop delay

RELAY ON

LOW LIMIT

Table 1: Relay descriptions

DEADBAND SETPOINT DEADBAND
RELAY ON
RELAY OFF

RELAY OFF
RELAY ON SETPOINT RELAY OFF HIGH LIMIT RELAY ON HIGH LIMIT

Set RS-485 baud rate (Default set: 9600, available 4800, 9600) P000 / P483 XX / XX finish.
XXX means baud rate.
Set RS-485 parity (Default set: 0(None), available 0(None), 1(Odd), 2(Even)) P000 / P484 XX / XX finish.
XXX means parity.

A typical Modbus® RTU mode message frame is shown below. In Modbus® RTU mode, the messages between frames are separated by no activity of at least the time interval of 3.5 characters. If the no activity interval between two characters is more than the time of 3.5 characters, the previous character was transferred successfully, and the current character's transmission starts.
Modbus® message

Set RS-485 address(Default set: 1, available ranges 1-255, but recommend 1-32) P000 / P485 XX / XX finish.
XXX means address.

ERROR MESSAGES The following error messages will appear if an LCD is present and the device is an error state.

LCD ERROR MESSAGES

Error Code Possible Problem

Err

Button input error

Er4

Sensor reading is abnorma

reading is abnormal

Solution Try a different input value Verify sensor is plugged in correctly

Start 3.5 char

Address Function

8 bits

Data N x 8 bits

CRC Check 16 bits

End 3.5 char

Modbus® Address The message's first frame field is the device's address. Modbus® can support up to 256 different addresses, including valid addresses from 1-247. Address 0 is for broadcast and addresses 248-255 are reserved for special addresses. Slave address can be set with compatible Modbus® RTU software. The default address is 1. It is suggested each single loop be less than 32 devices.

RS-485 COMMUNICATIONS/Modbus® RTU
Communication settings: · Baud rate: 9600 · Data: 8 Bit · Stop: 1 · Parity: None · Protocol: Modbus® RTU/RS-485

Modbus® Function The function code is the second data in the frame. Valid function codes are from 0-127 (01H-7FH). See the relevant Modbus® standard. The Series PMI supports 03H/06H function codes, shown as the following Modbus® Poll software. The detail register addresses are in the General Register Table found on the next page.

Broadcast mode to write data to slave Using broadcast mode, the user can write data to all slaves connected to the network. The address of broadcast mode to write data is 0. Example: To change slave address with broadcast mode, the user can set a new slave address. Note: Since this operation will modify all the addresses of the slaves to the same address, it is NOT applicable for a network of more than one slave. As shown in Figure 9, the slave address is changed to 3 by using broadcast mode:

Slave address: 0 Function: 06 Register address: 40014 Set value: 3 Communication codes: Master/PC to SLAVE: 00 06 00 0D 00 03 59 D9 SLAVE to Master/PC: none

Figure 6 03H Read Holding Register Example: Use the 03 function code to read the measurement value As shown in Figure 8:
Slave address: 5 Function: 03 Started register: 40002 Register reading length: 2 Scan rate: 200 ms Communication codes: Master/PC to SLAVE: 05 03 00 01 00 02 94 4F SLAVE to Master/PC: 05 03 04 00 FA 01 F4 9F D5

06H Preset Single Register Example: restore factory settings. As shown in Figure 7:

Figure 7

Slave address: 5 Function: 06 Register: 40016 Set value: 21845 Communication code: Master/PC to SLAVE: 05 06 00 0F 55 55 47 22 SLAVE to Master/PC: 05 06 00 0F 55 55 47 22

Figure 9
Special mode to read data from slave With the special mode, the user can read the register data under the circumstance of NOT knowing the slave address. Address of special mode read data: 255(0xFF) Note: This operation is applicable for ONLY ONE slave in the network. As shown in Figure 10 is a special mode to read slave address: Slave address: 255(0xFF) Function: 03 Started register: 40014 Register reading length: 1 Communication codes: Master/PC to SLAVE: FF 03 00 0D 00 01 59 D9 SLAVE to Master/PC: FF 03 02 00 01 9F D5
Figure 10

Figure 8

GENERAL REGISTER TABLE

Remarks

40001, 00000

R Signed Product code

PMI series product code: 9070

0×0000

40002,00001

R Signed PM2.5 value

PMI2.5 = Value, ug/m³

0×0001

40003, 00002

R Signed PM10 value

PMI10 = Value, ug/m³

0×0002

40014, 00013

R/W Signed RS-485/Modbus® RTU slave address

Default slave address =1, RTU,9600,n,8,1)

40016, 00015

R/W Signed Function register

Write 40016=21845 to reset to factory default setting

0: Off

1: Relay activated below the set point

2: Relay activated higher than set point

3: Relay activated in the set range

4: Relay activated outside the set range

40017, 00016

R/W Signed Relay control mode

Relay control parameters set

40018, 00017

R/W Signed Back up

Relay control parameters set

40019, 00018

R/W Signed Set point (mode 1 or 2) low limit (mode 3 or 4) regional Relay control parameters set

40020, 00019

R/W Signed Deadband (mode 1 or 2) high limit (mode 3 or 4)

Relay control parameters set

40021, 00020

R/W Signed Start delay

Relay control parameters set

40022, 00021

R/W Signed Stop delay

Relay control parameters set

40029, 00028

R/W Signed Baud rate

Baud rate: 9600(default) or 4800

40030, 00029

R/W Signed Parity

Parity: 0: NONE, 1: ODD, 2: EVEN

Note: 1. 40001 is PLC mode ADDRESS (BASE 1); 00000 is PROTOCOL ADDRESS (BASE 0). 2. Function register 40016: Use the 06 function code to write password (21845) to the register 40016 to return to the factory set.

MAINTENANCE/REPAIR
Upon final installation of the Series PMI, no routine maintenance is required. The Series PMI is not field serviceable and it is not possible to repair the unit. Field repair should not be attempted and may void warranty.

WARRANTY/RETURN
Refer to "Terms and Conditions of Sale" in our catalog and on our website. Contact customer service to receive a Return Materials Authorization (RMA) number before shipping the product back for repair. Be sure to include a brief description of the problem plus any additional application notes.

MODEL CHART Model PMI-2.5WC-N-N PMI-2.5WC-N-LCD PMI-10WC-N-N PMI-10WC-N-LCD PMI-2.5DC-N-N PMI-10DC-N-N PMI-2.5WC-RLY-LCD PMI-10WC-RLY-LCD PMI-2.5WC-RLY-B PMI-10WC-RLY-B PMI-2.5WA-RLY-B PMI-10WA-RLY-B PMI-2.5WC-RLY-N PMI-10WC-RLY-N PMI-2.5WA-N-LCD PMI-10WA-N-LCD PMI-2.5WA-N-N PMI-10WA-N-N PMI-2.5WA-N-B PMI-10WA-N-B PMI-2.5WC-N-B PMI-10WC-N-B PMI-2.5DA-N-N PMI-10DA-N-N PMI-2.5DA-N-LCD PMI-10DA-N-LCD PMI-2.5DC-N-LCD PMI-10DC-N-LCD

Particulate Size Mounting

PM 2.5 PM 2.5 PM 10
PM 10 PM 2.5 PM 10 PM 2.5 PM 10 PM 2.5 PM 10 PM 2.5 PM 10 PM 2.5 PM 10 PM 2.5 PM 10 PM 2.5 PM 10 PM 2.5 PM 10 PM 2.5 PM 10 PM 2.5 PM 10 PM 2.5 PM 10 PM 2.5 PM 10

Wall mount Wall mount Wall mount Wall mount Duct mount Duct mount Wall mount Wall mount Wall mount Wall mount Wall mount Wall mount Wall mount Wall mount Wall mount Wall mount Wall mount Wall mount Wall mount Wall mount Wall mount Wall mount Duct mount Duct mount Duct mount Duct mount Duct mount Duct mount

Output Modbus®, 4-20 mA, 0-10 V Modbus®, 4-20 mA, 0-10 V Modbus®, 4-20 mA, 0-10 V Modbus®, 4-20 mA, 0-10 V Modbus®, 4-20 mA, 0-10 V Modbus®, 4-20 mA, 0-10 V Modbus®, 4-20 mA, 0-10 V Modbus®, 4-20 mA, 0-10 V Modbus®, 4-20 mA, 0-10 V Modbus®, 4-20 mA, 0-10 V 4-20 mA, 0-10 V 4-20 mA, 0-10 V Modbus®, 4-20 mA, 0-10 V Modbus®, 4-20 mA, 0-10 V 4-20 mA, 0-10 V 4-20 mA, 0-10 V 4-20 mA, 0-10 V 4-20 mA, 0-10 V 4-20 mA, 0-10 V 4-20 mA, 0-10 V Modbus®, 4-20 mA, 0-10 V Modbus®, 4-20 mA, 0-10 V 4-20 mA, 0-10 V 4-20 mA, 0-10 V 4-20 mA, 0-10 V 4-20 mA, 0-10 V Modbus®, 4-20 mA, 0-10 V Modbus®, 4-20 mA, 0-10 V

Relay No No No No No No Yes Yes Yes Yes Yes Yes Yes Yes No No No No No No No No No No No No No No

LCD Display No Yes No Yes No No Yes Yes Yes Yes Yes Yes No No Yes Yes No No Yes Yes Yes Yes No No Yes Yes Yes Yes

Buttons No No No No No No No No Yes Yes Yes Yes No No No No No No Yes Yes Yes Yes No No No No No No

NOTES
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Printed in U.S.A. 1/22

Modbus® is a registered trademark of Schneider Automation, Inc. FR# 444637-00 Rev. 2

DWYER INSTRUMENTS, INC.
P.O. BOX 373 · MICHIGAN CITY, INDIANA 46360, U.S.A.

Phone: 219-879-8000 Fax: 219-872-9057

www.dwyer-inst.com e-mail: info@dwyermail.com

References

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