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Rotronic PF4 Instruction Manual

Differential pressurep and temperature transmitter
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E-M-PF4-V1_00
Document Code
PF4 Differential Pressure Transmitter:
Instruction Manual
Document Title
Differential Pressurep and Temperature Transmitter
© 2014; Rotronic AG
PF4
Instruction Manual
Rotronic
Bassersdorf, Switzerland
Unit
Instruction Manual
Page
1 of 54
AG
Document Type
E-M-PF4-V1_00

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  • Page 1 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 1 of 54 Document Title Differential Pressurep and Temperature Transmitter Instruction Manual © 2014; Rotronic AG E-M-PF4-V1_00...

  • Page 2: Table Of Contents

    Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 2 of 54 Document Title Contents   Contents ................................2     Overview .............................. 4     Dimensions ............................5    ...
  • Page 3 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 3 of 54 Document Title   Device Calibration and Adjustment Procedure ................44     Validation of Analog Output Signals ....................48  ...

  • Page 4: Overview

    Document Title Scope: This manual is valid for the PF4 transmitter series with firmware version V3.x. The low-order digit of the firmware version stands for minor changes, e.g. correction of errors that do not influence the main functionality of the device.

  • Page 5: Dimensions

    Page 5 of 54 Document Title Dimensions The PF4 comes as wall-mounted unit in a ROTRONIC housing. The following drawings show the relevant overall dimensions in mm. Figure 1: Important overall dimensions of the PF4 © 2014; Rotronic AG E-M-PF4-V1_00...

  • Page 6: General Description

    General Description 3.1 Power Supply The PF4 is only available as three-wire version without galvanic isolation. For configuration purposes, the device can also be supplied with power via the service interface (Mini-USB port inside housing). During configuration with the service interface there is insufficient power to run the differential pressure sensor to its most accurate performance levels.

  • Page 7: Differential Pressure Measurement

    The sensor used in the PF4 series is based on a 2x2 mm silicon chip (Figure 2, right). This enables production of an extremely small and exactly reproducible flow passage with a very high pneumatic resistance, resulting in extremely small sensor flow rates (max.
  • Page 8 HC2 sensor for temperature and relative humidity Figure 3: Inside view with description of the main components of the PF4 3.2.1 Differential Pressure Measurement Ranges The following sensor measurement ranges are available:  -25...+25 Pa ...
  • Page 9 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 9 of 54 Document Title 3.2.2 Unit Systems The following unit systems are available: Unit Unit Symbol Remarks Pascal 1 Pa = 1 N/m²...
  • Page 10 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 10 of 54 Document Title 3.2.3 Filters The curve of the differential pressure measured values can be smoothened with the help of a low-pass filter with selectable time constant.

  • Page 11: Pt100 Connection

    3.4 HC2 Connection The PF4 optionally comes with a HC2 connection socket. It can be used for all HC2 probes in the ROTRONIC portfolio. Alternatively, one pin of the socket can be used as analog current or voltage input. It must be established on ordering the device whether the pin can evaluate current or voltage signals;...

  • Page 12: Analog Outputs

    3.5 Analog Outputs The ROTRONIC HW4 software enables free configuration and scaling of the analog outputs. The measured values (differential pressure, humidity, temperature, calculation value) can be assigned at will to any analog output (Out1, Out2) and the required range can also be scaled freely.
  • Page 13 3.5.1 Scale The scale can be changed at will with the ROTRONIC HW4 software in a range from -9,999 to +99,999. The limits of the sensor must, however, be observed (see chapter 3.2 /3.3 / 3.4 ). The devices have one of the following optional default settings on delivery:...

  • Page 14: Relay

    The PF4 can be supplied with power through the service cable. The service cable provides insufficient power for correct differential power measurement. For sensor adjustment, the PF4 must be supplied with power from a suitable power source via the terminals provided (K2-1: -/~, K2-2: +/~).

  • Page 15: Display And Keys

    / frost point. A trend indicator can also be configured for every line. The optional LCD for the PF4 has a backlight. The first line of the display shows the differential pressure, the second the relative humidity and the third the temperature or calculated value such as dew point / frost point.

  • Page 16: Hw4 Software Compatibility

    Document Title 3.8.2 Decimals The PF4 adjusts the number of decimal places automatically on the basis of the current measured value. The display therefore always shows the measured value clearly with the corresponding number of significant decimals. 3.9 HW4 Software Compatibility PF4 differential pressure transmitters are integrated completely in the HW4 software - devices with only differential pressure measurement or additional Pt100 connector from V3.2 and later, and with HC2 connection...

  • Page 17: Mechanical Installation

    4.1 General The PF4 can be mounted on a wall or on a DIN top-hat rail. The position of the device and thus of the differential pressure sensor has no influence on measurement, i.e. the device is not sensitive to position. However, for exact measurement, the device must not move and must not be exposed to vibrations.

  • Page 18: Mounting

    This would falsify the measurement. Configuration of differential pressure connections: +: Positive pressure connection Negative pressure connection Figure 7: Differential pressure connections and E2 socket on the bottom side of the PF4 © 2014; Rotronic AG E-M-PF4-V1_00...

  • Page 19: Hc2 / Analog Connection

    19 of 54 Document Title 4.5 HC2 / Analog Connection The PF4 can optionally be ordered with an E2 socket. This interface and its possible uses are described below. 4.5.1 Use of HC2 Probe The PF4 can optionally be set up for a HC2 probe. After connection of a HC2 probe, it is possible to measure and display three parameters: ...
  • Page 20 20 of 54 Document Title The PF4 does not contain a power supply for an analog third-party probe. If adequate, the power supply for the HC2 probe can be used via the pins V+ and GND (see Figure 9). When using an analog probe, be sure to define both the voltage signal range and the measurement range of the probe.

  • Page 21: Pt100 Connection

    (Binder series 711) for all Pt100 probes from ROTRONIC and all variants of third-party Pt100 probes. Figure 10: Pt100 and differential pressure connection on the bottom side of the PF4 Wiring Diagram / Pin Configuration Figure 11 shows the pin configuration and wiring diagram for the Pt100 probe.

  • Page 22: Electrical Installation

    Cable Grip and Cable Specifications The PF4 comes with a M16 cable grip with screw cable gland. The M16 cable grip offers effective sealing if cables with external diameters of 6 to 7 mm (0.236 to 0.275 inch) with connection wires per 18 AWG are used.
  • Page 23 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 23 of 54 Document Title  Bus signals such as RS-485  Data signals for PCs, printers, etc.  Shielded analog inputs ...

  • Page 24: Wiring

    PF4 outputs. The effective load of a PF4 output comprises the cable and load resistance and should amount to at least 1000 ohm. The cable resistance should not be more than 1/1000 of the load resistance.
  • Page 25 Terminal K2-3 (protective ground) is connected with GND due to the closed solder jumper B5. To remove this connection, open solder jumper B5. Warning: Before connecting the PF4 to an active Ethernet network, make sure it is configured correctly for IP communication. Otherwise conflicts could disturb communication in the network. © 2014; Rotronic AG...

  • Page 26: Operation

    The differential pressure sensor in the device is dependent on the local absolute ambient atmospheric pressure . This must be communicated to the PF4 per display or HW4 software in order to attain the measuring accuracy named in the data sheet. P can be determined with a barometer.
  • Page 27 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 27 of 54 Document Title 1050 1000 Altitude [m] Figure 15: Graph showing the correlation between atmospheric pressure and altitude © 2014; Rotronic AG...

  • Page 28: Analog Outputs

    ROTRONIC HW4 software are asked to consult ROTRONIC. The Ethernet interface of the PF4 can be used best together with a PC with installed HW4 software (version 3.2 or later). Users may in principle access the measured data of the PF4 with any communication software. This is described in detail in the document E-M-AC3000-CP.

  • Page 29: Analog Input

    Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 29 of 54 Document Title 6.4 Analog Input The measurement range for the input voltage lies between 0 and 3.2 V if a voltage input is configured and from 0...25 mA if a current input is configured.
  • Page 30 900 in the display and an input voltage of 1000 mV the value 1100. The unit is configured with the HW4 software as "hPa". Remark on PF4 with HC2 and analog input: The formula for calculation of the Display-Value ∗...
  • Page 31 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 31 of 54 Document Title Examples: 6.4.5 Output Scale The display range (Scale = ScaleHi - ScaleLo) of the Display-Value can be selected freely within the complete...
  • Page 32 Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 32 of 54 Document Title Remark on PF4 with HC2 and analog input: The formula for calculation of the Output-Value ∗ Examples: © 2014; Rotronic AG E-M-PF4-V1_00...

  • Page 33: Display And Keys

    Menu navigation keys + / - change value: increase / decrease Figure 18: Display of the PF4 with connected HC2 probe Note: Unauthorized use of the menu can be prevented by locking the setting "Display Menu" (using the HW4 software >...
  • Page 34 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 34 of 54 Document Title Differential pressure in Pascal Differential pressure [Pa] Differential pressure in Pascal [Pa] Differential pressure & Pt100 connection Temperature in degrees Celsius [°C]...
  • Page 35 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 35 of 54 Document Title Differential pressure [Pa] Relative humidity [%RH] Temperature [°C] Differential pressure [Pa] Relative humidity [%RH] Calculation [°C] Differential pressure & HC2...
  • Page 36 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 36 of 54 Document Title 6.5.1 PF4 Menu The menu structure depends on the hardware configuration of the device. The following three variants are possible: ...
  • Page 37 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 37 of 54 Document Title Filter value (0 = fast, 13 = very slow): 0…13 (suitable Filters setting 0…7) RefValue Current differential pressure can be changed <Adjust>...
  • Page 38 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 38 of 54 Document Title Variant 2: Differential pressure & Pt100 connection Main Menu Menu Navigation (valid for all menus) Select Options ...
  • Page 39 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 39 of 54 Document Title Display when a Pt100 sensor is not connected Pt100 Adjust (2) Display when a Pt100 sensor is connected...
  • Page 40 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 40 of 54 Document Title Settings for Differential Pressure Select Options Unit for the differential pressure: Pa, inH 0, mpsi, mbar, Unit...
  • Page 41 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 41 of 54 Document Title <Adjust> Applies change to RefValue Temperature Adjust (1) Display when a HC2 sensor is not connected Temperature Adjust (2)

  • Page 42: Relay

    Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 42 of 54 Document Title 6.6 Relay The relay can be used in operation as an alarm switch contact. The functions have already been described in section 3.6 .

  • Page 43: Maintenance

    Maintenance Warning: If only the service cable AC3009 is used to supply power to the PF4, the differential pressure shown will not be correct because the voltage supply to the electronics is insufficient. For calibration or adjustment with the HW4 software, therefore, the power must be supplied via terminal block K2 in the bottom part of the housing.

  • Page 44: Device Calibration And Adjustment Procedure

    Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 44 of 54 Document Title 7.3 Device Calibration and Adjustment Procedure Both the differential pressure sensor and the corresponding electronics are very stable and require no maintenance.
  • Page 45 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 45 of 54 Document Title 7.3.2 Adjust Pt100 Reference Value Adjustment Enter a defined reference value with a Pt100 simulator or record the current nominal temperature with a reference instrument.
  • Page 46 The calibration point is deleted automatically from the probe memory after adjustment.  Since the PF4 does not have a real-time clock, the date of the adjustment is not written in the probe. If it is important to record the adjustment date, use the HW4 software to adjust the probe.
  • Page 47 47 of 54 Document Title Humidity Adjustment The keypad of the PF4 enables multi-point adjustment of the humidity. The effect of a humidity adjustment differs in dependence on the number of calibration points entered into the probe memory before adjustment: ...

  • Page 48: Validation Of Analog Output Signals

    The text line Delete can be used to delete all calibration points before probe adjustment.  Since the PF4 does not have a real-time clock, the date of the adjustment is not written in the probe. If it is important to record the adjustment date, use the HW4 software to adjust the probe.

  • Page 49: Technical Data

    Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 49 of 54 Document Title Technical Data General Differential pressure transmitter with analog output signals and optional Device type Ethernet interface Circuit type...
  • Page 50 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 50 of 54 Document Title Analog Input Voltage: 0…3.2 V Measurement range Current: 0…25 mA Accuracy 0.5% of current measured value Voltage: ±30 mV...
  • Page 51 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 51 of 54 Document Title Configurable Analog Outputs Output 1 Can be assigned to every parameter Default parameter Differential pressure Default range...
  • Page 52 Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 52 of 54 Document Title General Specifications Relay switching capacity <50 VAC / <75 VDC / <1 A Optional display LC, resolution 1 or 2 decimals, backlight, trend and alarm indicators...

  • Page 53: Accessories

    Rotronic E-M-PF4-V1_00 Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 53 of 54 Document Title Accessories 10.1 Service Cable Order Code Description Service cable, USB to UART AC3006 Service cable, USB to UART with integrated...

  • Page 54: Additional Documents

    Additional Documents Document Name Contents E-M-HC2 Probes HC2 manual E-M-HW4v3-Main HW4 software main manual E-M-TCPIP-Conf Manual for Ethernet configuration of ROTRONIC instruments E-M-AC3000-CP Communication protocol for all AirChip3000 instruments E-M-HW4v3-P-001 HW4 software manual for PF4 Document Versions Doc. Release Date...

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