Hikmicro HM-PS Series User Manual
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Hikmicro HM-PS Series User Manual

Hikmicro HM-PS Series User Manual

Pressure transmitter
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HM-PS Pressure Transmitter
User Manual
© Hangzhou Microimage Software Co., Ltd. All rights reserved.

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  • Page 1 HM-PS Pressure Transmitter User Manual © Hangzhou Microimage Software Co., Ltd. All rights reserved.

  • Page 2: Safety Instruction

    HM-PS Pressure Transmitter  User Manual Symbols The symbols that may be found in this document are defined as follows. Symbol Description Indicates a hazardous situation which, if not avoided, will or Danger could result in serious injury. Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage, data loss, performance Caution degradation, or unexpected results.
  • Page 3 HM-PS Pressure Transmitter  User Manual Caution  The pressure transmitter shall be installed, tested and maintained by professional engineers or technicians. Read the manual carefully before installation.  The maximum static pressure overload of the pressure transmitter is noted on the label of the Product, and the maximum pressure in process should not exceed the range of the pressure transmitter.

  • Page 4: Table Of Contents

    HM-PS Pressure Transmitter  User Manual Contents Product description ......................1 Product sepcification ....................1 Appearance and installation ....................2 Pressure transmitter installation ................2 Gauge pressure and absolute transmitter installation ........2 Differential and differential style pressure transmitter installation ....5 Precautions for installation of the impulse line ..........
  • Page 5 HM-PS Pressure Transmitter  User Manual Buttons ......................21 Enter and exit menu ..................21 Browse the menu ..................... 21 Input data ......................22 View viariables and parameters ................24 Zero trim and measurement range adjustment ............. 24 Get analog lower range (4~20mA output only) ..........24 Get analog upper range (4~20mA output only) ..........
  • Page 6 HM-PS Pressure Transmitter  User Manual Repair ......................... 39 MODBUS-RTU Protocol..............41...

  • Page 7: Product Description

    HM-PS Pressure Transmitter  User Manual Product description The HM-PS Series pressure transmitters use high-precision silicon sensor, based on electronic components with a microprocessor, to enable communication with field equipment. The product measures the density and pressure of gases or vapors, and level of liquid, and converts the measured data to 4 to 20 mA DC HART output or Modbus- RTU/RS-485 signal output.

  • Page 8: Appearance And Installation

    HM-PS Pressure Transmitter  User Manual Appearance and installation Caution  For operator and plant safety, it is essential that the installation is carried out by trained personnel according to the technical data of the model. Refer to the data sheet of the model for technical data.

  • Page 9: Mounting With Bracket

    HM-PS Pressure Transmitter  User Manual Process connection Needle valve Impulse line Mount to impulse line The standard process connection is: 1/2 NPT female threaded, which can be connected to the following connectors (optional): Optional process connection Mounting with bracket Mount the transmitter to wall or pipe using the optional bracket.
  • Page 10 HM-PS Pressure Transmitter  User Manual 145.8 8-Ø 10 18.8 4-Ø 12 6-Ø 9 Bracket parts and size for gauge and absolute transmitter (unit: mm)

  • Page 11: Differential And Differential Style Pressure Transmitter Installation

    HM-PS Pressure Transmitter  User Manual Bracket mounting of gauge and absolute pressure transmitter Differential and differential style pressure transmitter installation Mount the transmitter to wall or pipe using the optional bracket. The clamp is used when the bracket is mounted on a pipe and is not required for wall mounting.
  • Page 12 HM-PS Pressure Transmitter  User Manual 145.8 8-Ø 10 18.8 4-Ø 12 6-Ø 9 Bracket for differential pressure transmitter...

  • Page 13: Precautions For Installation Of The Impulse Line

    HM-PS Pressure Transmitter  User Manual Ø 92 Ø 64 Bracket mounting of differential and differential style pressure transmitter Precautions for installation of the impulse line For proper installation, the following points must be observed:  The impulse line shall be as short as possible and avoid sharp bends. ...

  • Page 14: Housing Rotation

    HM-PS Pressure Transmitter  User Manual  The impulse line shall be so arranged that air bubbles in the liquid and deposits in the gas under measurement can be returned to the process piping.  There must be no leakage after process pipe installation. ...

  • Page 15: Wire Connection

    HM-PS Pressure Transmitter  User Manual The transmitter housing can rotate approximately ± 180 degrees relative to the sensor without affecting performance and internal wiring. Do not force the sensor to rotate, loosen or lock the set screw with a 2 mm hex wrench. This minimizes the impact on electronic connections and output displays.

  • Page 16: Grounding

    HM-PS Pressure Transmitter  User Manual  Power and signal wires can be connected to terminals via M20x1.5 wire inlet/outlet at two sides. Use wire with cross section area no more than 2.5 mm2 (14 AWG).  (Non-explosive type) The optional cable entry for M20×1.5 ensures IP67 protection for 6~12mm outer diameter shielded cables.

  • Page 17: Handheld Field Communicator Wiring (4~20Ma Output Only)

    HM-PS Pressure Transmitter  User Manual Handheld field communicator wiring (4~20mA output only) Parameters of the transmitter can be read and set via a handheld field communicator that supports HART protocol. The handheld field communicator is not an included accessory and need to be purchased by the user.

  • Page 18: Cable Protection

    HM-PS Pressure Transmitter  User Manual For M20 wire inlet/outlet, install a conduit plug with the threads fully engaged or until mechanical resistance occurs. M20 conduit plugs or cable entry with Ø 18 (ID) × 1.8 sealing ring are recommended. Cable protection To prevent liquid from flowing along the cable causing a liquid build-up at the waterproof connector or entering the junction box, set the cable between the wiring...

  • Page 19: Zero Trim And Measurement Range Adjustment

    HM-PS Pressure Transmitter  User Manual If a shut-off valve is present, open the shut-off valve. Open the equalizing valve on the three-valve block (only for differential pressure transmitters, not for absolute or gauge pressure transmitters). Open the isolate valve to positive chamber. Shut the equalizing valve (only for differential pressure transmitters, not for absolute or gauge pressure transmitters).

  • Page 20: Notes For 4-20 Ma Output

    HM-PS Pressure Transmitter  User Manual Notes for 4-20 mA output If the measured pressure is within the range of the nameplate, the output current signal is 4~20mA. If the pressure is below the calibrated measurement range, the output signal is between 3.9 and 4mA, and if the pressure is above the calibrated measurement range, the output signal is between 20 and 20.5mA.

  • Page 21: Transmitter Configuration (Local Buttons)

    HM-PS Pressure Transmitter  User Manual Transmitter configuration (local buttons) This chapter describes how to configure the transmitter with its operation menu and buttons. The control buttons are located under the top nameplate. Unscrew the nameplate to reveal both the Z and S control buttons. Secure the nameplate after configuration.

  • Page 22: Menu Tree (4~20Ma Output)

    HM-PS Pressure Transmitter  User Manual Screen display information Menu tree (4~20mA output) When the transmitter is powered up, with the menu not activated, enter the key "OK" (press the Z and S keys simultaneously) once to start the main menu. Navigate through the main menu with the Z and S keys and press the Z and S keys simultaneously again to access the sub-menu.
  • Page 23 HM-PS Pressure Transmitter  User Manual Get LRV GET 0% Press the 2 keys simultaneously to set the current pressure to the lower range value. Get URV GET 100% Press the 2 keys simultaneously to set the current pressure to the upper range value. Set LRV SET 0% Use the [Z] and [S] key to adjust to the...
  • Page 24 HM-PS Pressure Transmitter  User Manual Linear FUNCTION Use the [Z][S] key to select the desired function measurement linear function, and press the 2 keys simultaneously to confirm the selection (linear, square root, range flip). Alarm mode ALARM type Use the [Z][S] key to select the desired alarm type, and press the 2 keys simultaneously to confirm the selection (high mode, low and, keep mode).

  • Page 25: Menu Tree (Rs-485 Output)

    HM-PS Pressure Transmitter  User Manual Version SOFT VER Display the current software version. number Menu tree (RS-485 output) When the transmitter is powered up, with the menu not activated, enter the key "OK" (press the Z and S keys simultaneously) once to start the main menu. Navigate through the main menu with the Z and S keys and press the Z and S keys simultaneously again to access the sub-menu.
  • Page 26 HM-PS Pressure Transmitter  User Manual Display DISPLAY Use the [Z][S] key to select the desired mode CYCLE display type and press the 2 keys simultaneously to confirm the selection. P: pressure P%: % of range SP: static pressure (gauge transmitter shows as 0 NONE) PT100: PT100 temperature sensor...

  • Page 27: Operating Instructions

    HM-PS Pressure Transmitter  User Manual Set parity bit Select the parity bit. No parity, Odd, and PARITY Even, are selectable. Communicat COMM Display order: 1. Address; 2. Baud rate; 3. ion Preview VIEW Data bits; 4. Parity bit; 5. Stop bits Software SOFT VER Display the current software version.

  • Page 28: Input Data

    HM-PS Pressure Transmitter  User Manual  The right key [S]: press to cycle the menu items from top to down.  The confirm key [Z] and [S]: confirm the selection or enter the sub-menu. Input data Select an option Navigate through the options by entering the left (Z) key and the right (S) key, and confirm selection by entering the confirm key once.
  • Page 29 HM-PS Pressure Transmitter  User Manual Damping setting Enter the left (Z) key or right (S) key once to enter the editing state. The editable digit displays a blinking cursor. Data editing Data Editing Method Function Press the key Move the cursor Move the cursor with the Left key [Z].

  • Page 30: View Viariables And Parameters

    HM-PS Pressure Transmitter  User Manual Enter the Confirm key once to return to menu. View viariables and parameters Go to VIEW menu to check the measured data for the current operating condition, including current pressure/differential pressure, % of Range, etc. When the menu is not active, enter the Confirm key once to launch the menu.

  • Page 31: Get Analog Upper Range (4~20Ma Output Only)

    HM-PS Pressure Transmitter  User Manual Adjustment The output current value changes to 4~20mA while the pressure reading display remains unchanged. Procedure Set the pipe differential pressure to 0 kPa and the transmitter displays +0.1 kPa. Launch the menu, and navigate to GET 0%. Enter the Confirm key once, the program changes the measurement range to 0.1 to 20.1 kPa and displays the message OK;...

  • Page 32: Set Analog Lower Range Value (4~20Ma Output Only)

    HM-PS Pressure Transmitter  User Manual Procedure Set the pipe differential pressure to 20kPa. The transmitter displays +20 kPa. Launch the menu, and navigate to GET100%. Enter the Confirm key once, program changes the measurement range to 0 to 20kPa and displays the message OK. Enter the Confirm key once to clear the prompt and return to the menu browsing.

  • Page 33: Set Analog Upper Range Value (4~20Ma Output Only)

    HM-PS Pressure Transmitter  User Manual Enter the left (Z) or right (S) key once to enter data editing, and a blinking cursor appears on the display. Change the value to -4 kPa. Refer to 4.3.4 Input data. Enter the Confirm key once. The program changes the lower range to -4 kPa and displays OK.

  • Page 34: Shift Digital Zero

    HM-PS Pressure Transmitter  User Manual Enter the Confirm key once, it displays 40 kPa as the upper range. Enter the left (Z) or right (S) key once to enter data editing, and a blinking cursor appears on the display. Change the value to 20 kPa.

  • Page 35: Shift Analog Range (4~20Ma Output Only)

    HM-PS Pressure Transmitter  User Manual Launch the menu, navigate to SHIFT ZERO. Enter the Confirm key once, and the program modifies the digital zero value and displays OK. Enter the Confirm key once to clear the prompt and return to menu browsing. Navigate to VIEW menu, and you can see the first variable is now 0kPa.
  • Page 36 HM-PS Pressure Transmitter  User Manual Change the value to +50%. Refer to 4.3.4 Input data for the way of editing, and refer to next step for the calculation of % of modified quantity. Enter the Confirm key once and the program will shift the analog range, i.e. the upper and lower ranges will be modified the same way and quantity.

  • Page 37: Set Pressure Unit

    HM-PS Pressure Transmitter  User Manual Set pressure unit Sets the unit for pressure/differential pressure (the first variable). Available units are as follows. Unit of pressure Number Name Display Number Name Display inches of mercury inHg ftH2O feet of water at 20°C/68°F Torr torr...

  • Page 38: Set Damping Value

    HM-PS Pressure Transmitter  User Manual Pressure unit setting The transmitter prompts OK. Enter the Confirm key once to clear the prompt and return to the menu browsing. Exit the menu, and check on the first variable to see if the unit changes to the set one.

  • Page 39: Set Decimal Places Of Reading

    HM-PS Pressure Transmitter  User Manual Launch the menu, and navigate to DISPLAY/DISPLAY CYCLE menu. Enter the Confirm key once and it displays the second variable (%). Enter the left (Z) or right (S) key to navigate to the first variable (Pressure/Differential Pressure, displayed in its unit).
  • Page 40 HM-PS Pressure Transmitter  User Manual Table of functional units of analog output No. Name Display No. Name Display Volumeric flow rate cubic meters per second m3/s cubic feet per second ft3/s cubic meters per minute m3/m cubic feet per minute ft3/m cubic meters per hour m3/h...

  • Page 41: Set Alarm Current Type (4~20Ma Output Only)

    HM-PS Pressure Transmitter  User Manual No. Name Display No. Name Display kilograms per cubic meter kg/m3 grams per liter kilograms per liter kg/L Procedure Launch the menu, and navigate to OUT UNIT. Enter the Confirm key once. Switch output units with the left (Z) or right (S) key. Enter the Confirm key once and it prompts OK.

  • Page 42: Feature Function Selection (4~20Ma Output Only)

    HM-PS Pressure Transmitter  User Manual Feature function selection (4~20mA output only) Three options are ctable in FUNCTION menu, linear, square root, and range flip. Range Flip: it flips the linear relationship between pressure and current. For example, if 4 mA represents 0 kPa and 20 mA represents 40 kPa before range flip, 4 ma represents 40 kPa and 20 mA for 0 kPa after flip.

  • Page 43: Set Communication Address

    HM-PS Pressure Transmitter  User Manual The communication parameters can be viewed through the COMM VIEW menu. For more information on the MODBUS-RTU protocol, see Appendix A MODBUS-RTU Protocol. Set communication address Transmitter is the subordinate. The permitted address ranges from 1 to 255. Launch the menu, and navigate to ADDR menu;...

  • Page 44: Preview Communication Parameters

    HM-PS Pressure Transmitter  User Manual Switch the options with the left (Z) or right (S) key. Enter the Confirm key once to confirm the modification. And it displays OK. Enter the Confirm key once to clear the prompt and return to the menu browsing. Preview communication parameters Display order: 1.

  • Page 45: Maintenance And Repair

    HM-PS Pressure Transmitter  User Manual Maintenance and repair Maintenance Varify output signal regularly Regularly verify the output signals according to the operating instructions in the 4 Transmitter configuration (local buttons) . Clean transmitter There may be deposits on transmitter even in normal use. Thus, the transmitter should be cleaned regularly according to the field application conditions.
  • Page 46 HM-PS Pressure Transmitter  User Manual The sensor should only be repaired by the manufacturer. Malfunctioned transmitters should be returned to the manufacturer for repair providing of fault description and possible causes.

  • Page 47: Modbus Rtu Protocol

    HM-PS Pressure Transmitter  User Manual MODBUS-RTU Protocol Data format Communication protocol The communication with the transmitter adopts the master and subordinate query mode in MODBUS RTU protocol. Communication data format The subordinate address specified in the protocol is 0-255. As 0 is used for broadcasting which is not supported in this protocol version, 1 to 255 are usable.

  • Page 48: Modbus Registers

    HM-PS Pressure Transmitter  User Manual Modbus registers Type Size Permission Content Input register 2 Bytes Read-only I/O systems provide this type of data Holding register 2 Bytes Read-write Change this type of data through the application Data format The integers involved in the command are represented as 16-bit unsigned integers. Floating point numbers are in the 4-byte (32-bit) IEEE754 format, and the 4-byte order is 1032.
  • Page 49 HM-PS Pressure Transmitter  User Manual Register Holding Function Description Function address register code number 0004 40004 Sensor type 0: Differential pressure 0x03 (read-only) 3: Gauge pressure 6: Absolute pressure 0005 40005 Sensor range Code Meaning 0x03 code (read- 1 kPa only) 6 kPa 40 kPa...
  • Page 50 HM-PS Pressure Transmitter  User Manual Register Holding Function Description Function address register code number 0007 40007 Baud rate Default 9600 bps 0x03, 0x06 Code Baud rate (bps) 1200 2400 4800 9600 19200 38400 NOTE: Reboot is NOT requried for the modification taking effect.
  • Page 51 HM-PS Pressure Transmitter  User Manual Register Holding Function Description Function address register code number 0011 40011 4-byte data Default: 1032 0x03, format 0x06 Code Data format 1032 order 3210 order 0123 order 2301 order Note: 1) This data format is for floating point reading and writing;...
  • Page 52 HM-PS Pressure Transmitter  User Manual Register Holding Function Description Function address register code number 0032 40032 Device reboot 0: not perform 0x03, (operaiton 1: perform 0x06 only) Reserved 0051 40051 Factory Example: 19 (year 2019) 0x03 number - year (2 digits, read only) 0052...
  • Page 53 HM-PS Pressure Transmitter  User Manual Register Holding Function Description Function address register code number Reserved 0061 40061 Bit No.1 2-byte integer data, read and write. 0x03, Data saved when powered off. 0x06 0062 40062 Bit No.2 2-byte integer data, read and write. 0x03, Data saved when powered off.
  • Page 54 HM-PS Pressure Transmitter  User Manual MODBUS request Function code 1 byte 0x03 Start address 2 byte 0x0000 to 0x0017 or 0x0032 to 0x003E Number of reads 2 bytes 0x0001 to 0x000C MODBUS response Function code 1 byte 0x03 Byte count 1 byte Input status N*2 byte...
  • Page 55 HM-PS Pressure Transmitter  User Manual Content 2 byte MODBUS response Function code 1 byte 0x06 Start address 2 byte 0x0000~0x000B, 0x001E~0x0021, 0x003C~0x003E Content 2 byte Error response Function code 1 byte 0x06 + 0x80 Error code 1 byte 0x01, 0x02, 0x03, 0x04. See A.3.3 Error code for code explaination.

  • Page 56: Input Registers

    HM-PS Pressure Transmitter  User Manual Content 4 byte MODBUS response Function code 1 byte 0x10 Start address 2 byte 0x000C to 0x0017 Data length 2 byte 0x0002 Error response Function code 1 byte 0x10 + 0x80 Error code 1 byte 0x01, 0x02, 0x03, 0x04.
  • Page 57 HM-PS Pressure Transmitter  User Manual Register Register Function Description Function address number code 0021 30021 Lower alarm Lower alarm status 0x04 register 0001 Operating flow 0004 Standard flow 0010 Pressure 0040 Temperature Note: 1) There is no upper or lower limit setting for the multiple variable instrument now.
  • Page 58 HM-PS Pressure Transmitter  User Manual Register Register Function Description Function address number code 0023 30023 Fault location Example: 2 (02, indicating a 0x04 register problem during pressure collection) (ERROR 02 12, pressure chip damaged or overloaded) Note: It prompts an error code when abnormal...

  • Page 59: Error Code

    HM-PS Pressure Transmitter  User Manual Function code 1 byte 0x04 Start address 2 byte 0x0000 to 0x0007, or 0x0014 to 0x0017 Input quantity 2 byte 0x0001 to 0x000C MODBUS response Function code 1 byte 0x04 Byte count 1 byte Input status N*2 byte Error response...
  • Page 60 HM-PS Pressure Transmitter  User Manual 0x03 For read operations: wrongt number of registers For write operation (function code 6): abnormal data input For write operations (function code 16): wrongt number of registers or bytes ( bytes = number of registers×2) 0x04 The set data exceeds the range or sensor damaged Pressure unit code...
  • Page 61 UD40276B...

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