Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 1 of 54 Document Title PF4 Differential Pressurep and Temperature Transmitter Instruction Manual © 2014; Rotronic AG E-M-PF4-V1_00
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 2 of 54 Document Title Contents Contents ............................................................................................................................................................ 2 1 Overview ............................................................................................................................
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 3 of 54 Document Title 7.3 Device Calibration and Adjustment Procedure ............................................................................... 44 7.4 Validation of Analog Output Signals ............................................................................................... 48 8 Firmware Update ....................
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 4 of 54 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.
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 5 of 54 Document Title 2 Dimensions The PF4 comes as wall-mounted unit in a ROTRONIC housing. The following drawings show the relevant overall dimensions in mm.
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 6 of 54 Document Title 3 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).
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 7 of 54 Document Title 3.2 Differential Pressure Measurement The differential pressure measurement is based on the principle of thermal mass flow. A flow limiter in a tube generates a differential pressure. A very small quantity of gas diverted by a bypass before and after the limiter (max.
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 8 of 54 Document Title Inside View: Mini-USB service connector Differential pressure sensor Terminals K3 for isolated relay contacts Terminals K2 for power supply Differential pressure tubes Terminals K4 for analog temp.
Rotronic E-M-PF4-V1_00 AG 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 Pa 1 Pa = 1 N/m² Inch water column inH2O 1 inH2O (4 °C) = 249.089 Pa Milli-pound-force per square mpsi 1 mpsi = 0.001 psi = 6.89476 Pa Millibar mbar 1 mbar = 0.
Rotronic E-M-PF4-V1_00 AG 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. There are 13 smoothing filter stages available. Practice has shown stages 0...7 meet most application requirements.
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 11 of 54 Document Title 3.3 Pt100 Connection A Pt100 temperature sensor can optionally be connected to the four-pin connector (Binder series 711). The possible measurement range depends on the Pt100 sensor and is max. -100...200 °C. 3.3.
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 12 of 54 Document Title 3.4.2 Simulator Value When the simulation value has been activated, a defined simulator value is used instead of the current measured value. 3.5 Analog Outputs The ROTRONIC HW4 software enables free configuration and scaling of the analog outputs.
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 13 of 54 Document Title 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 ).
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 14 of 54 Document Title 3.6 Relay The PF4 provides a freely configurable internal isolated relay contact. Normally closed (NC) Common (COM) Normally open (NO) The relay can be controlled by freely configurable alarms.
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 15 of 54 Document Title 3.8 Display and Keys The optional LCD for the PF4 has a backlight. The display unit is configurable. Depending on the version (differential pressure / differential pressure & Pt100 / differential pressure & HC2 connection), the different parameters can be assigned to the different display lines.
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 16 of 54 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.
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 17 of 54 Document Title 4 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.
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 18 of 54 Document Title 4.3 Mounting Method 1: The PF4 comes with two screws, two wall plugs and two rubber washers. There are two screw depressions in the bottom part of the housing (closed on delivery). Use the template delivered with the PF4 to drill the holes in the wall and put in the wall plugs.
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 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.
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 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.
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 21 of 54 Document Title 4.6 Pt100 Connection The PF4 comes optionally with a Pt100 connection with four-pin connector (Binder series 711) for all Pt100 probes from ROTRONIC and all variants of third-party Pt100 probes.
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 22 of 54 Document Title 5 Electrical Installation This section describes the general safety precautions for electric wiring. 5.1.1 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.
Rotronic E-M-PF4-V1_00 AG 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.
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 24 of 54 Document Title 5.2 Wiring This section describes the wiring of the device with connection possibilities. 5.2.1 Electrical Diagrams The PF4 is wired with a four-pin connection cable for transmission of the electrical power and measured values.
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 25 of 54 Document Title Terminals K2-1: V- K2-2: V+ Ethernet (optional) Description Power supply: 15…40 VDC (-) or 14…28 VAC Power supply: 15…40 VDC (+) or 14…28 VAC K2-3: Protective ground K3-1: NC Normally closed – relay not energized K3-2: COM Common – common contact K3-3: NO Normally open – relay energized K4-1: OUT1
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 26 of 54 Document Title 6 Operation This chapter describes handling of the device in operation. 6.1 Differential Pressure 6.1.1 Ambient Pressure The differential pressure sensor in the device is dependent on the local absolute ambient atmospheric pressure Pabs.
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 27 of 54 Document Title 1050 Atmospheric pressure [hPa] 1000 950 900 850 800 750 700 650 600 Altitude [m] Figure 15: Graph showing the correlation between atmospheric pressure and altitude © 2014; Rotronic AG E-M-PF4-V1_00
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 28 of 54 Document Title 6.1.2 Dust and Humidity Since the flow of air through the differential pressure sensor is very low (max. 180 µl/min), dust particles already settle on the inside walls of the inlet tube and do not reach the sensor. The device is thus largely insensitive to dust in the air being measured.
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland 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. It must be stipulated in the order code whether the analog input is to be configured as current or voltage measurement (see also chapter 3.
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 30 of 54 Document Title 6.4.4 Scaling of the Analog Input The analog input can be scaled within the range 0…3.2 V / 0…25 mA. If, for example, only 1...2.5 V are to be shown in the display due to the application or a connected third-party probe, the analog input must be scaled accordingly.
Rotronic E-M-PF4-V1_00 AG 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 display range (Display-Scale), but may not exceed the maximum display range of -9,999…99,999.
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland 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 is: ∗ Examples: © 2014; Rotronic AG E-M-PF4-V1_00
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 33 of 54 Document Title 6.
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 34 of 54 Document Title Differential pressure Differential pressure in Pascal [Pa] Differential pressure in Pascal Differential pressure & Pt100 connection [Pa] Temperature in degrees Celsius [°C] © 2014; Rotronic AG E-M-PF4-V1_00
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland 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] Differential pressure & HC2 Calculation [°C] connection Differential pressure [Pa] Voltage [mV] Differential pressure [Pa] Current [mA] Remark: It is possible to switch between display of
Rotronic E-M-PF4-V1_00 AG 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.
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 37 of 54 Document Title Filters © 2014; Rotronic AG Filter value (0 = fast, 13 = very slow): 0…13 (suitable setting 0…7) RefValue Current differential pressure can be changed Applies change to RefValue Performs a zero adjustment Cancels the last change (, ) E-
Rotronic E-M-PF4-V1_00 AG 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 (Enter key) Selection of the menu point or menu Return; menu one level up + Line up; option right - Line down; option left Select Options Device Settings Units Backlight Unit for t
Rotronic E-M-PF4-V1_00 AG 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 Select Options RefValue The current temperature shown can be changed Applies change to RefValue Cancels the last change made with Variant 3: Differential pressur
Rotronic E-M-PF4-V1_00 AG 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 Unit Filters Options Unit for the differential pressure: Pa, inH20, mpsi, mbar, mmHg, mmH2O, Torr, g/cm2 Filter value (0 = fast, 13 = very slow): 0…13 (suitable setting 0…7) RefValue Current differential pressure can be changed Applies change to RefValue
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 41 of 54 Document Title Applies change to RefValue Temperature Adjust (1) Display when a HC2 sensor is not connected Temperature Adjust (2) Display when a HC2 sensor is connected Select Options RefValue The current temperature can be changed Applies change to RefValue Exchange Sensor Exchange Sensor is s
Rotronic E-M-PF4-V1_00 AG 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 . The relay is configured with the HW4 software, as described in the manual E-M-HW4v3-P-001. 6.6.
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 43 of 54 Document Title 7 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.
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland 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. They do not normally need to be changed or recalibrated after factory calibration.
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland 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 1. Enter a defined reference value with a Pt100 simulator or record the current nominal temperature with 2. Enter the reference value determined in MENU > Pt100 > RefValue. 3. Select "" in MENU > Pt100. a reference instrument.
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 46 of 54 Document Title 7.3.3 Adjust HC2 Probe Both the Pt100-RTD temperature sensor used in the probe and the corresponding electronics are very stable and do not normally need to be calibrated after initial factory calibration.
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 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: One calibration point adds an offset to all measured values.
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 48 of 54 Document Title Note: All calibration points are deleted automatically from the probe memory after adjustment. 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.
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 49 of 54 Document Title 9 Technical Data General Device type Differential pressure transmitter with analog output signals and optional Ethernet interface Circuit type 3-wire circuit Mounting types W (Wall) Power Supply and Connections Supply voltage (VDD) Rated current consumption DC supply Rated current consumption AC supp
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 50 of 54 Document Title Analog Input Measurement range Accuracy Voltage: 0…3.2 V Current: 0…25 mA 0.
Rotronic E-M-PF4-V1_00 AG 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 Per order code Output 2 Can be assigned to every parameter Default parameter Relative humidity / Temperature Default range Per order code Output 1 and output 2 0…20 mA 4…20
Rotronic E-M-PF4-V1_00 AG 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 Housing material ABS Housing protection grade IP65 (without Ethernet interface) IP40 (with Ethernet interface) Dimensions 129 x 72 x 45 mm W
E-M-PF4-V1_00 Document Code Rotronic AG Bassersdorf, Switzerland Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 53 of 54 Document Title 10 Accessories 10.1 Service Cable Order Code Description AC3006 Service cable, USB to UART AC3009 10.2 10.
Rotronic E-M-PF4-V1_00 AG Bassersdorf, Switzerland Document Code Unit Instruction Manual PF4 Differential Pressure Transmitter: Document Type Instruction Manual Page 54 of 54 Document Title 11 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 PF
