eyc-tech PMM330 Differential Pressure Transmitter Instruction Manual
- September 16, 2024
- eyc-tech
Table of Contents
etc-tech PMM330 Differential Pressure Transmitter
Product Information
Specifications
- Model: etc-tech PMM330
- Type: Differential Pressure Transmitter (Indoor)
- Manufacturer: etc-tech
Product Usage Instructions
Security Considerations
Please read the specifications carefully before using the product and keep
the manual for timely reference. Ensure that qualified personnel perform
installation and wiring by safety standards. Do not operate the product in
explosive areas or situations that may affect human life. Always disconnect
the power supply before performing any wiring or installation to prevent
damage to the equipment. Use crimp-type terminals and comply with local indoor
wiring codes and electrical installation rules.
Dimension
Refer to the user manual for detailed dimensions of the pressure
differential pressure transmitter.
Connection Diagram
Consult the user manual for the connection diagram of the transmitter.
Analog Output Setting
Users can choose between 4-20 mA or 0-10 V for analog output by adjusting
the jumper settings. Remember to power cycle the device after changing the
jumper placement.
Autozero
The autozero button allows users to set the current pressure to zero point.
Press the button for about 5 seconds until LED2 turns on, then release it to
set the new zero point. To restore factory default settings, press the button
for about 10 seconds until LED2 turns on and off.
RS-485 and Modbus
The PMM330 integrates an RS-485 interface for digital communication using
Modbus protocol for connection to PLC, HMI, and PC. Refer to the attached file
on the website for Modbus protocol information. The device settings and data
logging functions can be accessed through user software available for download
on the website.
FAQ
Q: Can this product be used in explosive areas?
A: No, this product cannot be used in any explosion-proof area.
Q: How to set the analog output of the transmitter?
A: The user can choose between 4-20 mA or 0-10 V for analog output by
placing the jumper in the corresponding places as shown in the manual.
Q: How to reset the device to factory default settings?
A: Press the autozero button for about 10 seconds until LED2 turns on and
off to restore the factory default settings.
Security considerations
Please read this Specification carefully, before use of this, and keep the
manual properly, for timely reference. Solemn Statement: This product can not
be used for any explosion-proof area. Do not use this product in a situation
where human life may be affected. etc-tech will not bear any responsibility
for the results produced by the operators！
Warning!
- Installation and wiring must be performed by qualified personnel by all applicable safety standards.
- This product must be operated under the operating conditions specified in the manual to prevent equipment damage.
- Please use the product under ordinary pressure, or it will cause safety problems.
- This product must be operated under the operating conditions specified in this manual to prevent equipment damage.
- This product must be operated under all atmospheric conditions and equipment damage.
- To prevent product damage, always disconnect the power supply from the product before performing any wiring and installation.
- All wiring must comply with local codes of indoor wiring and electrical installation rules.
- Please use the crimp-type terminal.
- To prevent personal injury, do not touch the moving part of the product in operation.
- It may cause high high-humidity atmosphere during the product was breakdown. Please take a safety strategy.
Dimension
Connection Diagram
Analog Output setting
Users can choose 4 … 20 mA or 0 … 10 V for analog output by placing the g jumper in the corresponding places shown in the table below.
The user must do a power cycle after changing the jumper placement.
Autozero
This button allows the user to set the current pressure to zero point. It is
required to press the button for about 5 seconds, and the user can that see
LED2 will turn on. Then user can release this button and will see the LED2
flashing, and the new zero point has been set. This button also allows the
user to restore the factory default setting. It is required to press the
button for bout 10 seconds, the user will first see LED2 turn on and then off.
The user can release this button and will see the LED2 flashing, and the new
zero point has been set.
RS-485 and Modbus
PMM330 integrates an RS-485 interface for digital communication as an option feature. Based on Modbus protocol makes the general convenience on PLC, HMI, and PC] connection. For Modbus protocol information please attach the file from the website to download. Besides the PLC, and HMI application, the user software provides the device setting and data logging function, it also can be free to download from the website Technical Data
- Max. network size: 32 transmitters
- Communication: with COM-Port (serial interface) of PC
- Max. network expansion: 1200m (3937ft) total length at 9600 baud
- Transmission rate: 9600, 19200, 38400, 57600, 115200 Baud
- Parity: None, Even, Odd
- Data length: 8-bit
- Stop bit: 1 or 2 bit
- Factory default Station address = 1, Data format= 9600, N81
User Software
- Hardware connection: Connect the PMM330 to the PC by USB to the RS-485 converter.
- Check the COM port number from Computer Management
- Open the PMM33_UI, go to function “Interface”, click item “Config” and then set COM port, BAUD rate, and data format, Press “Scan” bottom for scan devices, and “Apply” for connection.
- Setting on Analog Output
- Quantity: Pressure
- Filter: 0, 5, 10, 20, 25 seconds
- Signal: Linear / Square root extraction- LCD shows the √ mark on lthe eft-low side and the red LED of LDEP flashes slowly while the square root extracted function is active.
- The range for Upper and Lower
- Setting on RS-485 and offset adjustment
- Station ID: 1~247
- Baud Rate: 9600 / 19200 / 38400 / 57600 / 115200
- Data Frame: None-8Bit-1Stop / None-8Bit-2Stop / Even-8Bit-1Stop / Even-8Bit-2Stop / Odd-8Bit-1Stop / Odd-8Bit-2Stop /
- Pressure Offset adjustment, unit available in inH2O only
- Multiple measuring values, from 0.01 to 100
- Unit setting, data display, and data logging
- Pressure unit: mbar, Pa, hPa, kPa, mmH2O, mmWS, inH2O, mmHg
- Export file: *.CSV
- Transmitter information
etc-tech Measuring Specialist enhances your capability with sensor technology Air flow | Humidity | Dew point | Differential pressure | Liquid flow Temp. | Pressure | Level | Air quality | Signal meter
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