OTT HydroMet Pluvio 2 L 200 Manual

Precipitation gauge, using the weighing principle
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Precipitation Gauge
Using the weighing principle
The OTT Pluvio² L reliably and accurately measures both the amount and the intensity of liquid, solid, and mixed precipitation
Lifetime factory calibration, drift-free measurements, and robust protective housing eliminate field visits for instrument service
Multiple communication interfaces: SDI-12, RS-485, and Pulse Output options
Solar panel power options make the instrument ideal for remote locations
Easy software setup and a USB interface for communication with computer
Wind protection shield available for particularly exposed locations
Ready for All Conditions
In line with the standards applicable in the world, the OTT
Pluvio
L is available in two versions: One has a bucket orifice of
2
200 cm
and a measuring capacity of 1500 mm, the other has
2
a bucket orifice of 400 cm
2
mm. Both versions are optionally available with ring heating.
Suitable for Any Location
Conceived for a precipitation intensity range of 0.05 to 3,000
mm/h, the OTT Pluvio² L reliably measures heavy tropical
rain and arctic snow showers. As the bucket orifice has
no funnel, heavy and solid precipitation are recorded with
precise timing. The OTT Pluvio
continuously with the highest availability of data and without
evaporation losses from heated funnels or buckets so that
solid precipitation is measured correctly.
with a measuring capacity of 750
L measures precipitation
2
Accurate, stable long-term and robust
Developed in conjunction with technologically leading
meteorological services, the OTT Pluvio
expectations and at the same time stands out with relatively
low operating costs. It complies with all requirements of
WMO manual No. 8.
Virtually maintenance-free
The maintenance work is limited to emptying the
collecting bucket, occasional visual checks, and
adding anti-freeze as necessary.
Pluvio² L
Applications
Climatology
Meteorological Observation
Flood warning
Hydropower
L fulfills the highest
2

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  • Page 1 Pluvio² L Applications Climatology Meteorological Observation Flood warning Hydropower Precipitation Gauge Using the weighing principle The OTT Pluvio² L reliably and accurately measures both the amount and the intensity of liquid, solid, and mixed precipitation Lifetime factory calibration, drift-free measurements, and robust protective housing eliminate field visits for instrument service Multiple communication interfaces: SDI-12, RS-485, and Pulse Output options Solar panel power options make the instrument ideal for remote locations Easy software setup and a USB interface for communication with computer...
  • Page 2: Technical Specifications

    (Ø x h) Pedestal (Ø): 4” Weight (bucket empty) approx. 16 kg /16.6 kg MATERIAL Material Base plate: stainless steel / aluminium Collecting bucket: polyethylene Bucket support: ASA, UV-resistant Pipe housing: ASA, UV-resistant OTT HydroMet GmbH euinfo@otthydromet.com www.otthydromet.com a brand of...
  • Page 3 Diagnosis Firmware update Guided accuracy test *RT = real-time; NRT = non real-time; units can be configured in mm or in (inch), mm/min or mm/h, in/min or in/h and °C or °F OTT HydroMet GmbH euinfo@otthydromet.com www.otthydromet.com a brand of...
  • Page 4 Konformitätserklärung Declaration of Conformity Declaration de Conformité Declaración de Conformidad OTT Hydromet GmbH / We / Nous / Nosotros Ludwigstr. 16 87437 Kempten, Germany erklären, in alleiniger Verantwortung für die Ausstellung dieser Konformitätserklärung in Bezug auf die Erfüllung der grundlegenden Anforderungen und die Anfertigung der technischen Unterlagen, für das...
  • Page 5 OTT Pluvio²L 7004000090, 7004000190, 7004002090, 7004002190 Das Produkt stimmt mit den Anforderungen der folgenden harmonisierten Normen überein. The product fulfills the requirements of the following harmonized standards. Le produit est conforme aux exigences des normes harmonisées suivantes. El producto cumple los requisitos de las siguientes normas armonizadas. 2011/65/EU Richtlinie des Europäischen Parlaments und des Rates vom 8.
  • Page 6 Precipitation Measurement OTT Pluvio L – Universal precipitation gauge for liquid, solid, and mixed precipitation OTT Pluvio Precipitation gauge using the balance principle It does not matter whether it is drizzle or a cloudburst, sleet, hail or snow, the new OTT Pluvio L reliably and accurately measures both the amount and the intensity of liquid, solid, and mixed precipitation.
  • Page 7 Setting standards with the OTT Pluvio Ready for anything When collecting climate data throughout the world, different demands are made regarding the bucket orifice of the rain gauge. In accordance with the standards applicable in the world, we therefore offer the OTT Pluvio L in two versions.
  • Page 8 Suitable for any location Conceived for a precipitation intensity range of 0.05 to 3000 mm/h, the OTT Pluvio reliably measures the drizzle of the temperate zones as well as heavy tropical rains and arctic snow showers. — Bucket orifice without a funnel – heavy and solid precipitation are also recorded with precise timing.
  • Page 9: Technical Data

    *RT = real-time; NRT = non real-time; units can be configured in mm or in (inch), mm/min or mm/h, in/min or in/h and °C or °F Germany OTT Hydromet GmbH Ludwigstrasse 16 · 87437 Kempten Phone +49 831 5617-0 · Fax -209...
  • Page 10 Operating Instructions Precipitation gauge OTT Pluvio...
  • Page 11 We reserve the right to make technical changes and improvements without notice.
  • Page 12: Table Of Contents

    Table of contents 1 Scope of supply 2 Order numbers 3 Basic safety information 3.1 Markings and symbols used in the instruction 3.2 Explanation of safety information used 3.3 Note the following for safe and trouble-free operation 4 Introduction 4.1 Measured value output to the SDI-12 and RS-485 interfaces 4.2 Measured value output at pulse output 4.3 Graphic display of measured value output for differentprecipitation intensities 4.4 Orifice ring rim heater...
  • Page 13 Appendix A – Connecting the OTT Pluvio L to an OTT datalogger A.1 Connecting the OTT Pluvio L to an OTT netDL or OTT DuoSens via SDI-12 or RS-485 interface A.2 Connecting the OTT Pluvio L to an OTT netDL or OTT DuoSens via the pulse output Appendix B –...
  • Page 14: Scope Of Supply

    1 Scope of supply – Weighing precipitation gauge; Version 200 (RH) or 400 (RH). OTT Pluvio Consisting of: base plate with weighing mechanism, bucket support, collecting bucket, and pipe housing. With SDI-12, RS-485, and USB interfaces (for servicing purposes). Additional pulse outputs for amount of precipitation and status information.
  • Page 15: Basic Safety Information

    3 Basic safety information 3.1 Markings and symbols used in the instruction This bullet point indicates an instruction relating to a specific action. This bullet point indicates an item in a list. – This bullet point indicates a sub-item in a list. Remark: …...
  • Page 16: Note The Following For Safe And Trouble-Free Operation

    3.3 Note the following for safe and trouble-free operation Please read these Operating Instructions before using the OTT Pluvio L for the first time! Make yourself completely familiar with the installation and operation of the OTT Pluvio L! Keep these Operating Instructions for later reference. Only use the OTT Pluvio L as described in these operating instructions! The intended use of the OTT Pluvio...
  • Page 17: Introduction

    4 Introduction The OTT Pluvio L precipitation gauge is used for automatic determination of the meteorological intensity and amount of precipitation. In contrast to conventional precipitation gauges, the OTT Pluvio L works using the weighing principle. The OTT Pluvio L reliably detects precipitation, whether liquid or solid, by determining the weight of the collecting bucket.
  • Page 18 Every 6 seconds, the precipitation gauge determines the weight of the collecting bucket including its content using a resolution corresponding to 0.001 mm of pre- cipitation (= raw data). The difference between this measured value and the basic weight of the empty collecting bucket gives the current bucket content. A special filter algorithm prevents falsification of the measurement results caused by effects such as wind.
  • Page 19: Measured Value Output To The Sdi-12 And Rs-485 Interfaces

    For service purposes (test measurements, convenient setting of operating parame- ters and for an accuracy test) a USB interface has been provided. The particular advantage of this is: when using the USB interface, no separate power supply is required. Please note: After connecting the USB interface, the OTT Pluvio L interrupts communication on the serial interfaces! The measuring system of the OTT Pluvio...
  • Page 20 Accu total NRT This measured value outputs the sum of the correct amounts of precipitation since the last device start with a fixed output delay of 5 minutes. For this purpose, the individual Accu NRT values are totalled (redundant sensor). This value is particularly suited for daily or monthly totals as well as for tracking the plausibility of the Accu NRT and Accu RT-NRT values.
  • Page 21: Measured Value Output At Pulse Output

    Bucket RT This value outputs the currently measured, unfiltered bucket content. It corresponds to the measured weight raw data and is subjected to higher uncertainty with regard to temperature and wind impact. The measured value is particularly suited for quick reference measurements of the weighing mechanism and for determining the current bucket level.
  • Page 22 Pulse-Accu RT-NRT This measured value is same as Accu RT-NRT. However, the threshold is deter- mined by the resolution of the pulse output (0.05 mm · 0.1 mm · 0.2 mm · 0.5 mm · 1.0 mm). The measured value is output as a pulse sequence using a rate of 5 Hz (default) or 2 Hz (con figurable through the OTT Pluvio L operating software via USB interface).
  • Page 23: Graphic Display Of Measured Value Output For Differentprecipitation Intensities

    Please note: When the pulse outputs are connected to – OTT dataloggers ➝ no additional wiring is required to be made. You may directly connect the pulse outputs to the pulse inputs of an OTT datalogger. – Third-party datalogger ➝ external wiring at the pulse and status outputs must be designed in such a way, that the limits for I ≤...
  • Page 24: Orifice Ring Rim Heater

    4.4 Orifice ring rim heater For both versions of OTT Pluvio L, an optional orifice rim heater is available. This heater reliably keeps the orifice rim free of snow and ice at low ambient tempera- tures (e.g. no snow or ice build-up). No snow will accumulate at the orifice rim. The orifice rim heater consists of a ring-shaped heating element within the pipe housing with temperature sensor and an electronic heater control module for con- trolling and monitoring the heating function.
  • Page 25 The OTT Pluvio L unit heats the orifice rim until the target temperature of +4 °C (factory setting) is reached – as far as heating power and ambient conditions allow. To achieve this, the heater control system measures both ambient and ori- fice rim temperatures and uses these values together with the target temperature to calculate the pulse/pause ratio.
  • Page 26 Mode #3 The heater is controlled based on the National Weather Service (NWS) Standard. The heater control is active from a preset time (starting time) on and continuously keeps the orifice rim tempera- ture at the predetermined setpoint. The On-time may be adjusted as well (1 …...
  • Page 27: Installing The Ott Pluvio

    5 Installing the OTT Pluvio CAUTION Risk of injury from flying components If there is a stormy wind during installation, there is a risk of injury from flying components. Do not perform installation in stormy wind! The installation of the OTT Pluvio L is carried out on a 4"...
  • Page 28: Grounding Cable

    Please note: All connection cables must be UV-resistant and suitable to be laid in the ground! Connection cable for data collection device/precipitation gauge SDI-12 interface – Cable length: maximum 70 m – Cable type: shielded low-voltage cable – Wire size: 3 x 0.5 mm 2 2) RS-485 interface –...
  • Page 29: Preparing The Installation Location

    5.3 Preparing the installation location WARNING Risk of injury due to pedestal falling over/down The OTT Pluvio pedestal has a weight of up to 32 kg (depending on its length)! Wear safety shoes when mounting the pedestal! Temporarily secure the pedestal against falling over during assembly. CAUTION Danger of eye injuries due to drilling dust and chemicals Wear protective goggles during drilling work and when setting the composite...
  • Page 30: Preparing The Base Plate

    5.4 Preparing the base plate CAUTION Risk of crushing when installing the base plate The base plate has a weight of 8 kg! Wear safety gloves and safety shoes when installing the base plate! Carefully transport the OTT Pluvio L to the installation location upright in the closed shipping carton Turn the OTT Pluvio L shipping carton upside down.
  • Page 31: Preparing The Connection Cable

    Unscrew 4 Phillips screws on the cover of the electronics unit approx. 3 mm, raise the cover slightly and pull it off forwards. When the foam rubber seal for the cover is stuck to the surface below, carefully pry the cover off using a slotted head screwdriver.
  • Page 32 Orifice rim heater connection cable (optional) If using a separate connection cable for the orifice rim heater: Assemble the cable as described above and connect to the 8-wire screw terminal strip, see Fig. 11. Fig. 10: Connecting the cable for the data recording device/power supply for the precipitation gauge to 6-wire and/or Pulse Out mm/inch A...
  • Page 33: Installing The Base Plate On The Pedestal

    5.6 Installing the base plate on the pedestal Place the base plate onto the pedestal such that the connection and grounding cables come out of the slit in the base plate flange (see Fig. 14). Lead connection and grounding cables through the opening in the base plate upwards.
  • Page 34: Connecting The Connection Cable

    5.7 Connecting the connection cable Push rubber grommet with connection cable into the slot. Connect 6-wire and 8-wire screw terminal strip to the appropriate PCB sockets. Connect the twisted shielding of the cables to the terminal, refer to Fig. 13. If necessary, pull back connection cable and store in pedestal (raise base plate again if necessary).
  • Page 35: Aligning The Base Plate

    Fig. 14: Connecting the grounding cable (view from below). Recess Grounding cable Ground terminal Base plate flange slot 5.9 Aligning the base plate First, fix the base plate using the three upper hexagon bolts. Alternately tighten the bolts until they are all contacting the pedestal. Important: Insert all hexagon bolts approximately to the same depth! Using the lower hexagon bolts, adjust the base plate so that the air bubble is within the indicator marked ring.
  • Page 36: Performing Final Work

    5.10 Performing final work Replace the electronics unit cover and tighten the four Phillips screws. Align the bucket support (taking into account the anti-rotation protection) and carefully place it onto the bracket for the bucket support. Secure the bucket support using the central attachment bolt. Fig.
  • Page 37: Chapter 7.6. Factory Settings

    Fig. 17: Placing the collecting bucket onto bucket support. Collecting bucket Version 200 Collecting bucket Version 400 Bucket support Protection against incorrect positioning As necessary: change the factory settings using the OTT Pluvio operating software. For installation procedure and using the operating software, see Chapter 7.6.
  • Page 38 Carry out functional check: Remove cover of the USB interface ➝ red LED must briefly flash once every two seconds. Replace cover. Fig. 18: Carrying out the functional check. Cover red LED USB interface Align the pipe housing and place it onto the base plate. The pipe housing must completely seat on the base plate (refer to the detail drawing in Fig.
  • Page 39 Tighten three knurled bolts. Fig. 20: Fitting the pipe housing and tightening the knurled screws. Please note: Always place and remove the pipe housing of the OTT Pluvio L with Pipe housing orifice rim heater straightly! Knurled bolt (3 x) Please note: After startup, the OTT Pluvio L uses a 2 minute delay to output the measured values.
  • Page 40: Sdi-12 Commands And Responses

    6 SDI-12 commands and responses 6.1 Basic commands All SDI-12 basic commands are implemented in the OTT Pluvio L. The following SDI-12 basic commands are relevant for the operation of the OTT Pluvio Conventions applicable to measured value formats: p – Sign (+,–) b –...
  • Page 41 Command Response Description aD0!* Send data a<value1><value2><value3> … a – sensor address … <CR><LF> * after <value1> – Intensity RT aM!, aMC!, [mm/h]: pbbbb.ee (0.00 … 3000.00) aC!, aCC! [mm/min]: pbb.ee (0.00 … 50.00) [inch/h]: pbbb.eee (0.000 … 118.110) [inch/min]: pb.eee (0.000 …...
  • Page 42 Command Response Description (continuation <value9> – Status of aD2!) pbbbb +0 = Precipitation gauge working properly +1 = W: Bucket level ≥ 80 % +2 = W: USB interface is/was connected +4 = W: Restart (due to power failure) +8 = W: Restart (due to firmware) +16 = W: Weight change out of range +32 = W: Supply voltage <...
  • Page 43: Advanced Sdi-12 Commands

    6.2 Advanced SDI-12 commands All advanced SDI-12 commands start with an “ “ for OTT. These commands may be used, for example, to retrieve addition- al information from an OTT Pluvio L through the transparent mode of a datalogger or to configure an OTT Pluvio Command Response Description...
  • Page 44 Set/read orifice rim heater mode (OTT Pluvio L with orifice rim heater) aOCHb! ab<CR><LF> Set mode Read mode aOCH! ab<CR><LF> a – sensor address b – 0 = Orifice rim heater disabled 1 = Mode #1; continuously ON 2 = Mode #2; temperature range control 3 = Modus 3;...
  • Page 45: Rs-485 Interface With Modbus Protocol (Rtu)

    Set/read serial interface (SDI-12 or RS-485) aOCLb! ab<CR><LF> Set serial interface Read serial interface aOCL! ab<CR><LF> a – sensor address b – 0 = SDI-12; factory setting 1 = RS-485 2-wire 2 = RS-485 4-wire Set/read protocol on RS-485 interface Set protocol aOCMb! ab<CR><LF>...
  • Page 46: Rs-485 Command Line Mode (Ascii Text Retrieval)

    6.3 RS-485 command line mode (ASCII text retrieval) When using the RS-485 interface, the default transmission protocol is the SDI-12 protocol. This assumes that the data recording device connected can process the SDI-12 protocol. The OTT netDL or OTT DuoSens dataloggers can handle this protocol. To easily incorporate the OTT Pluvio L unit into any measuring station infrastructure, a so-called command line mode is implemented in the OTT Pluvio...
  • Page 47: Performing Maintenance Operation

    7 Performing maintenance operation CAUTION Risk of burns due to potentially hot orifice rim! For device versions with orifice rim heater (RH) the orifice rim is heated at low ambient temperatures. Wear protective gloves during maintenance! To ensure smooth operation of the precipitation gauge, we recommend to perform the following maintenance operations at the intervals given: Emptying: bucket level ≥...
  • Page 48: Adding Anti-Freeze Agent For Winter Operation

    7.2 Adding anti-freeze agent for winter operation CAUTION Risk of eye injuries from anti-freeze agent The anti-freeze agent contains chemicals that can cause severe eye irritation. Wear protective goggles when filling/emptying the anti-freeze agent! For temperatures below 0 °C *, we recommend anti-freeze agent be added to the collecting bucket.
  • Page 49: Performing The Visual Inspection

    7.3 Performing the visual inspection Check smooth movement of the collecting bucket in all directions at the lower edge of the bucket orifice. To do this, with the pipe housing closed, move the bucket slightly with a sideways tap on the inside. The collecting bucket upper edge may not contact the pipe housing! A short movement can affect the mea- sured value “Intensity RT”...
  • Page 50 RS-485 interface – SDI-12 protocol RS-485 interface wiring is incorrect (pins “Data RS-485 ...“): ➝ 2-wire: check pin assignments of “… - A“, “… - B“ and swap as necessary; ➝ 4-wire: check pin assignments of “… TX - A“, “… TX- B“ as well as of “…...
  • Page 51 No or incorrect pulses available at the pulse outputs Precipitation gauge supply voltage missing, incorrectly connected, or is outside the specified range; red LED is continuously OFF: ➝ restore power supply to the unit (replace fuse as necessary); ➝ check supply voltage level and adjust as necessary; ➝...
  • Page 52 Orifice rim heater does not work/does not work as expected Orifice rim heater supply voltage is missing, incorrectly connected, or is outside the specified range: ➝ restore power supply to the orifice rim heater (replace fuse as necessary); ➝ check supply voltage level and adjust as necessary; make sure that output power of power source is sufficient;...
  • Page 53: Performing The Guided Accuracy Test (Check Measurement)

    Incorrect precipitation output Foreign matter (leafs, insects, …) have entered the collecting bucket (increase in weight < approx. 12 mm within 6 seconds; any higher increase is detected as foreign matter by the filter algorithm): ➝ manually correct the amount of precipitation by deducting a respective amount.
  • Page 54: Preparatory Work

    Preparatory work Prerequisite: PC (notebook) running Microsoft Windows 7 or later operating system. Log on to the PC as an administrator Installing the OTT Pluvio Operating Software: – copy the file “setup.exe“ into a directory of the PC; – start the file “setupe.exe“ ➝ the “InstallShield Wizard“ (installation program) opens;...
  • Page 55: Repair

    8 Repair In case of a device malfunction, use Chapter 7.5 to see if you can resolve the problem yourself. In case of unit failure, please contact the OTT repair center: OTT Hydromet GmbH Repaircenter Ludwigstrasse 16 87437 Kempten · Germany...
  • Page 56: Technical Data

    10 Technical Data Supply voltage 5.5 … 28 V ; typ. 12 V ; reverse-polarity protected Current consumption typ. 9.2 mA (measuring and communication at 12 V Power consumption ≤ 110 mW (without heater) Recordable precipitation liquid, solid, mixed Recordable precipitation amount Version 200 1,500 mm Version 400...
  • Page 57: Product Certifications

    Dimensions Ø x h Version 200 450 mm x 752 mm Version 400 450 mm x 677 mm Weight (empty) Version 200 approx. 16.0 kg Version 400 approx. 16.6 kg Housing material Base plate stainless steel/aluminium Collecting bucket Polyethylene Bucket support Pipe housing ASA, UV resistant Degree of protection...
  • Page 58 Limits/accuracy...
  • Page 60: Appendix A - Connecting The Ott Pluvio

    Appendix A – Connecting the OTT Pluvio L to an OTT datalogger A.1 Connecting the OTT Pluvio L to an OTT netDL or OTT DuoSens via SDI-12 or RS-485 interface Method A: Connecting the OTT Pluvio L via the SDI-12 interface (protocol and physical interface: SDI-12).
  • Page 61 Configuring the OTT netDL/OTT DuoSens for the OTT Pluvio L with SDI-12 interface Create a OTT netDL/OTT DuoSens channel with “SDI-12 Master“ or “OTT SDI RS485“ function block (“Serial sensors“ tab). Make the following settings: Fig. A3: Setting the operating parameters of the OTT netDL/OTT DuoSens SDI-12 Master function block.
  • Page 62 Fig. A4: Example configuration of an OTT DuoSens with 6 values recorded. The configuration examples can be found on “www.ott.com“ A.2 Connecting the OTT Pluvio L to an OTT netDL or OTT DuoSens via the pulse output Connect the OTT Pluvio L to the OTT netDL IP datalogger or to the OTT DuoSens Compact Datalogger as shown in Figure A5.
  • Page 63 Configuring OTT netDL/OTT DuoSens for OTT Pluvio L with pulse output Create two OTT netDL/OTT DuoSens channels with function block “Pulse input“ (“Digital sensors“ tab). (When you only want to record the amount of precipita- tion, one function block is sufficient.) Make the following settings: Fig.
  • Page 64: Appendix B - Dimensions Of The Ott Pluvio

    Appendix B – Dimensions of the OTT Pluvio L 200 with pedestal and bottom plate Nominal height (height of bucket orifice): ±0.3 Ø 159.6 3.0 m 200 cm 1200 1500 2040 2540 3040 mm 1000 1300 1800 2300 mm 1288 1788 2288 mm Ø...
  • Page 65 Appendix C – Dimensions of the OTT Pluvio L 400 with pedestal and bottom plate Nominal height (height of bucket orifice): 3.0 m ±0.4 Ø 225.7 400 cm 1200 1500 1965 2465 2965 mm 1000 1300 1800 2300 mm 1288 1788 2288 mm Ø...
  • Page 66: Appendix D - Dimensions Of Pedestal With Bottom Plate

    Appendix D – Dimensions of pedestal with bottom plate Ø 114.3mm Dimensions A for OTT Pluvio L … Nominal installation height 1.0 m 260 mm 335 mm Nominal installation height 1.2 m 460 mm 535 mm 4.5 mm Nominal installation height 1.5 m 760 mm 835 mm Nominal installation height 2.0 m...
  • Page 67: Appendix E - Installing The Anti-Theft Protection

    Appendix E – Installing the anti-theft protection...
  • Page 68 Appendix F – Installation bird repellent ring CAUTION Risk of cuts due to thin-walled metal parts Wear protective gloves when installing the bird repellent ring! CAUTION Risk of burns due to potentially hot orifice rim! For device versions with orifice rim heater (RH) the orifice rim is heated at low ambient temperatures.
  • Page 69: Appendix G - Accessories/Replacement Parts

    Appendix G – Accessories/replacement parts Accessories 4"-pedestal with bottom plate; for 1.0 m installation height – for OTT Pluvio L 200: length 260 mm 70.020.060.9.2 – for OTT Pluvio L 400: length 335 mm 70.020.061.9.2 – incl. bottom plate for attaching to a concrete foundation –...
  • Page 70 24 V power supply for C-rail mounting – 50 W 65.030.001.9.2 – 100 W 65.030.003.9.2 – degree of protection: IP 20 – for C-rail mounting – input voltage: 90 … 260 V 24 V power supply in separate protective casing –...
  • Page 73 OTT HydroMet GmbH Ludwigstrasse 16 87437 Kempten · Germany Phone +49 831 5617-0 +49 831 5617-209 Document number euinfo@otthydromet.com 70.040.000.B.E 02-0523 www.otthydromet.com...

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