E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Instruction Manual Document Type Page Document title 1 of 20 HygroMet MP Humidity Temperature Meteorological Probe User Guide © 2009-2011; Rotronic AG E-M-HM-V1_12
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Document title Instruction Manual Document Type Page 2 of 20 Table of contents 1 2 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 4 4.1 4.2 4.3 4.4 5 5.1 6 6.1 6.2 6.3 7 7.1 7.2 8 8.1 8.2 8.3 8.4 8.5 9 10 10.1 10.2 11 12 13 Overview ..............................................................................................................................................
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Document title Instruction Manual Document Type Page 3 of 20 Applicability: This manual applies to the HygroMet MP probe series with firmware version 1.x, where 1.x can be 1.0, 1.1, etc. Changes to the last digit of the version number reflect minor firmware changes that do not affect the manner in which the instrument should be operated.
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Document title 2 Instruction Manual Document Type Page 4 of 20 Mechanical configurations and dimensions HygroMet MP with HC2-S3 probe HygroMet MP with HC2-S3 probe and additional Pt100 RTD probe © 2009-2011; Rotronic AG E-M-HM-V1_12
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Instruction Manual Document Type Page Document title 3 General description 3.1 Power supply 5 of 20 Depending on the circuit type, the HygroMet MP requires the following power supply: a) 2-wire, loop powered version: 10…28 VDC - depending on the load connected to the output(s). The minimum supply voltage can be determined as follows: V min = 10 V + (0.
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Document title 3.4 Instruction Manual Document Type Page 6 of 20 Output signals HygroMet MP: HF2-wire and 3-wire versions With the ROTRONIC HW4 software any of the two analog output signals can be made to correspond to one of the following: • • • Relative humidity Temperature Calculated parameter Any output can also be disabled.
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Instruction Manual Document Type Page Document title 7 of 20 Making use of the HygroMet MP and HC2-S3 probe configurable settings and functions is entirely up to the user and the appropriate settings depend on the user application.
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Instruction Manual Document Type Page Document title 8 of 20 MEASUREMENT LOOP VALIDATION Functions Description ► Simulator mode Used to make the HygroMet generate fixed values for the humidity, temperature and calculated parameter.
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Instruction Manual Document Type Page Document title 9 of 20 Functions Applicability Factory default Humidity / temperature adjustment 3-wire Device write protection 2-wire, 3-wire Disabled (HygroMet and probe) Limit humidity output to 100 %RH 2-wire, 3-wire Enabled (probe) Out-of-limit value digital / display alarm 2-wire, 3-wire Disabled (HygroMet and
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Document Type Page Document title Function / Setting Instruction Manual HM HC2 10 of 20 Notes This setting has no effect on the HygroMet and probe.
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Instruction Manual Document Type Page Document title 11 of 20 General guidelines for signal cables The following guidelines are derived from European Standard EN 50170 for the transmission of signals by copper wires.
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Instruction Manual Document Type Page Document title 6.3 12 of 20 Wiring color code The HygroMet MP is supplied with 3m (9 ft) of PUR cable with tinned ends. Before connecting the power, please make sure that there is no wiring error. Improper wiring may damage the HygroMet MP. To facilitate maintenance of the HygroMet MP, keep the probe cable short.
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Instruction Manual Document Type Page Document title 13 of 20 6.3.2 HygroMet : 3-wire version Electrical diagram for voltage outputs The maximum permissible cable length can be determined under consideration of the voltage drop caused by the current flowing to the devices connected to the unit.
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Instruction Manual Document Type Page Document title 14 of 20 Measuring humidity or temperature only Operation of the HygroMet MP does not require both current loops to be closed. When using the HygroMet MP to measure either humidity only or temperature only, close only the loop that is being used.
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Document title 8.2 Instruction Manual Document Type Page 15 of 20 Location of the service connector (mini USB type) WARNING: the service connector is a UART interface with a mini-USB connector type. Do not connect the service connector directly to the USB port of a PC or hub. The service connector is located on the PCB of the HygroMet MP.
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Document title • • • • • Instruction Manual Document Type Page 16 of 20 Use cable AC3006 to connect the service connector of the HygroMet MP to a USB port of a PC with the ROTRONIC HW4 software installed. Note that the ROTRONIC USB driver must be installed on the PC as explained in the HW4 manual E-M-HW4v3-Main Power the HygroMet MP from a DC voltage source.
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Instruction Manual Document Type Page Document title 10 Technical data 10.
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Instruction Manual Document Type Page Document title Configurable analog outputs HM 2-wire Output 1 Can be made to correspond to any parameter Factory default parameter Relative humidity or dew / frost point Factory default scale As per ordering code Output 2 18 of 20 HM 3-wire Can be made to correspond to any parameter Factory default parameter Temperat
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Instruction Manual Document Type Page Document title 19 of 20 Environmental limits HM 2-wire Storage and transit -50…+70 °C / -20...
E-M-HM-V1_12 Rotronic AG Bassersdorf, Switzerland Document code Unit HygroMet MP Humidity Temperature Meteorological Probe: User Guide Instruction Manual Document Type Page Document title Document File Name Contents E-T-HumiDefs Humidity Definitions 20 of 20 Note: All document file names have an extension corresponding to the document release number. This extension is not shown in the above table. 13 Document releases Doc. Release Date Notes _10 Dec. 4, 2009 Original release _11 Jun.
