1. Manuals
  2. Brands
  3. Endress+Hauser Manuals
  4. Measuring Instruments
  5. promag 31
  6. Operating manual

Endress+Hauser promag 31 Operating Manual

Electromagnetic flow measuring system
Hide thumbs Also See for promag 31:
Table of Contents

Advertisement

Quick Links

Download this manual
BA 028D/06/e/02.97
No. 50084257
valid from software version
V3.01.XX (measuring amplifier)
promag 31
Electromagnetic
Flow Measuring System
Cold Water Fiscal Metering
Operating Manual

Advertisement

Table of Contents
loading

Related Manuals for Endress+Hauser promag 31

Summary of Contents for Endress+Hauser promag 31

  • Page 1 31 BA 028D/06/e/02.97 No. 50084257 Electromagnetic valid from software version V3.01.XX (measuring amplifier) Flow Measuring System Cold Water Fiscal Metering Operating Manual...

  • Page 2: Safety Instructions

    Promag 31 Safety Instructions Correct Usage • The Promag 31 is only to be used for measuring the flow of conductive fluids. Warning! • The Promag 31 flowmeter is designed and checked according to the regulations in force EN 61010 “Protection Measures for Electronic Measuring Equipment”). The flowmeter may be dangerous if it is not used for the purpose it was designed for or is used incorrectly.

  • Page 3: Table Of Contents

    ..6.4 Nominal diameter and flow rate ..53 2.4 Mounting Promag 31 F ..6.5 Conceptual definitions ..54 2.5 Turning the transmitter housing...
  • Page 4 Promag 31 Endress+Hauser...

  • Page 5: System Description

    1. System Description 1.1 Fields of application The measuring system Promag 31 possesses the PTB licence for the transport of cold water (waste water) and at an attractive price offers accurate magnetic-inductive flow measurement of fresh water with a minimum conductivity of 5 µS/cm. The measuring...

  • Page 6: The Promag 31 Measuring System

    • Local display Fig. 2 Caution! The Promag 31 is available with different Ex-certificates. Information about the current status can be found from your existing E+H representive. Furthermore, all relevant Ex informations and the specifications of the certificates can always be obtained from your E+H representative.
  • Page 7 Promag 31 1. System Description The measuring equipment comprises: • Transmitter Promag 31 and • Sensor Promag F Compact version: Remote-mounted version (FS version or FL version) The Promag 31 transmitter The transmitter is mounted remote from the sensor: and the sensor together form a mechanical unit.

  • Page 8: Design Of The Measuring System

    1. System Description Promag 31 1.4 Design of the measuring system Power supply* Screw cover of electronic 85...260 V AC 45...65 Hz Cable entry compartment (6 parameters can 20... 55 V AC be set here with internal miniature 16... 62 V DC...
  • Page 9 Flow direction recognition • Creep suppression (on/off) Local display Using the Promag 31 local display, important parameters can be read off and control- led at the measuring point directly: • Flow rate and/or totaliser value • Technical units (SI/US units) (US-conformity with fiscal measuring systems is not available) •...
  • Page 10 After calibration The user of a fiscal Promag 31 measuring system is obligated to insure that the perscribed standards have been adhered to. Safety •...

  • Page 11: Mounting And Installation

    Promag 31 2. Mounting and Installation 2. Mounting and Installation Caution! • Pay consistent attention to the notes in this chapter regarding to assure reliable measurement. • For explosion protected instruments the mounting regulations and the technical data may differ from those stated here. Please refer to the Ex supplement of this operating manual.

  • Page 12: Transport Instructions For Promag From Dn 350 / 14

    2. Mounting and Installation Promag 31 2.2 Transport instructions for Promag from DN 350 / 14" The pipe lining on the flanges is protected by disks to prevent damage when transporting to the installation point. These are to be removed before installation.

  • Page 13: Mounting Instructions

    Promag 31 2. Mounting and Installation 2.3 Mounting Instructions Please pay attention to the following instructions, in order that you may measure correctly and avoid damage to the equipment. Mounting position (any) a) Vertical mounting: Optimal, with the flow upwards.
  • Page 14 2. Mounting and Installation Promag 31 Inlet and outlet runs The sensor should be mounted away from fittings liable to generate > 3...5 x DN > 2 x DN turbulence (e.g. valves, elbows, T-junctions). Inlet run: > 3...5 x DN Outlet run: >...
  • Page 15 Promag 31 2. Mounting and Installation Downward pipe (>5 m) Vent valve With the suggested installation opposite (siphon, vent valve after the sensor) no partial vacuum is created with such a downward pipe >5 m long. Fig. 15 Installation of pumps...

  • Page 16: Mounting Promag 31 F

    2. Mounting and Installation Promag 31 2.4 Mounting Promag 31 F Lengths and dimensions See Chapter 6.1 “Dimensions and weights” Mounting The sensor is mounted between the flanges of the pipe (see Fig. 18). Since the lining of the measuring pipe is drawn on over the sensor flange, it performs the sealing function at the same time.
  • Page 17 Promag 31 2. Mounting and Installation Replacement measuring electrodes right side: Type DN 350...600 Fig. 19 The Promag F Type DN 350...DN 600 is available with replacement electrodes. This version enables the measuring electrodes to be cleaned or replaced under process conditions.

  • Page 18: Turning The Transmitter Housing And Local Display (Compact Version)

    2. Mounting and Installation Promag 31 2.5 Turning the transmitter housing and local display (compact version) In the compact version the transmitter housing and the local display can be rotated in steps of 90° relative to the sensor. This enables the unit to be adapted to suit the various mounting positions in the pipe.

  • Page 19: Mounting The Transmitter (Remote-Mounted Version)

    Fixing the wall holder/Stamped lead seal Sealing of compact versions The cover of the electronic compart- ment of the Promag 31 is separetly sealed. Instead of the conventional cylindric screws a leading screw is used and the seal wire is drawn through it and fixed under the clutch.

  • Page 20: Potential Equalisation

    Measuring pipe thed metal piping it is therefore suffi- cient to connect the earthing terminal of the Promag 31 transmitter housing to Reference electrode the potential equalizing line. Fig. 24 With the remote-mounted version this connection is made at the earth terminal of the connection housing (transmitter).

  • Page 21: Earthing In An Area With Severe Interference

    2.8 Earthing in an area with severe interference In order to make the most of the electro- magnetic compatibility (EMC) of the Promag 31, it is advisable to provide two flange-to-flange links and to con- nect them jointly with the transmitter housing to earth potential.
  • Page 22 2. Mounting and Installation Promag 31 Endress+Hauser...

  • Page 23: Electrical Connection

    Promag 31 3. Electrical Connection 3. Electrical Connection 3.1 General information Please note the information in Chapter 2.1 on maintenance of the type of protection IP 67. Caution! When connecting explosion protected versions, refer to the corresponding information and connection diagrams in the Ex supplement to this operating manual.

  • Page 24: Connection Of The Remote Version

    3. Electrical Connection Promag 31 3.3 Connection of the remote version Caution! Only connect or disconnect the coil-current cable when the supply is switched off. 1. The connection to the terminal compartment is made as described for the compact version (see Chapter 3.2).

  • Page 25: Wiring Diagrams

    *After the first operation or in case of an interruption of the power supply the fiscal meter measuring system Promag 31 signals an alarm. With connection through an external reset switch according wiring version 1/2 the alarm can be canceled.
  • Page 26 Status evaluation Status 24 V DC Aux IN – Button IP 67 RS Components International Fig. 33 Remote-mounted version (FS/FL): Connection between sensor and transmitter Promag 31 F Promag 31 F (FL version) (FS version) Transmitter Transmitter Sensor Sensor Fig. 34...

  • Page 27: Cable Specifications

    Capacitance: core/core, screen earthed ≤120 pF/m Cable specifications for use in areas with severe electrical interference The Promag 31 measuring equipment fulfils all general requirements for electromagnetic compatibility (EMC) according to EN 50081 Part 1 and 2 / EN 50082 Part 1 and 2 when installed in accordance with the NAMUR recommenda- tions.
  • Page 28 Promag 31 Endress+Hauser...

  • Page 29: Operation And Commissioning

    4. Operation and Commissioning 4. Operation and Commissioning 4.1 Instrument Functions With Promag 31, various instrument functions can be activated or deactivated using miniature switches (see page 33). Explanations on individual instrument functions are given on the following pages. Creep suppression Works setting: Switched on Switch No.
  • Page 30 ⇒ not conducting «open»: Fig. 36 System units Works setting: SI units Switch No. 3: OFF SI units: volume in [l, m US units: volume in [US gal] Note! With the fiscal Promag 31 the SI units are always activated! Endress+Hauser...
  • Page 31 With the fiscal Promag 31 the switch is always in OFF-position. Note! The Promag 31 measuring system can be operated in a bidirectional or unidirectional mode. Selecting this mode is dependent on the status output and functions as follows: Configuration of status output...
  • Page 32 In practice the maximum rate of flow that occurs is not always reliably known. There- fore it is possible to extend up to 125% (500 Hz). For the Promag 31 measuring system eight preset pulse-value steps can be selected in terms of the nominal diameter. Setting is made by means of three miniature swit- ches (see Chapter 4.2).

  • Page 33: Setting Unit Parameters With Miniature Switches

    Promag 31 4. Operation and Commissioning 4.2 Setting unit parameters with miniature switches Warning! Danger of electric shock! Switch off the supply voltage before you unscrew the cover of the electronic compartment of the transmitter housing. Do not fail to observe the supplementary Ex documentation for Ex-certified instruments (in particular regarding rates of cooling).
  • Page 34 4. Operation and Commissioning Promag 31 Pulse value ⇒ SI units [dm Table /pulse, m /pulse] Switch No. 5, 6 and 7 [mm] = 400 Hz at v = 10 m/s) 0.01 0.004418 0.012272 0.020106 0.031416 0.049087 0.082958 1000 0.125664 1000 0.196350...
  • Page 35 Promag 31 4. Operation and Commissioning Full-scale value setting ⇒ SI units [m Table Switch No. 8, 9 and 10 [mm] (v = 10 m/s) 0.5 m/s 1 m/s 1.5 m/s 2 m/s 2.5 m/s 4 m/s 8 m/s 10 m/s...

  • Page 36: Local Display

    For the fiscal measurement system Promag 31 there is no operation possible, because the access is sealed! With the Promag 31 local display important variables can be read off and controlled directly at the measuring point: • Flow rate and/or totaliser value •...
  • Page 37 Promag 31 4. Operation and Commissioning Display functions Display Function Description Display totaliser Display of the current flow rate or totaliser volume. A negative flow direction is indicated by a negative digit. To select the measuring unit ⇒ press “Set” key...

  • Page 38: Commissioning

    4. Operation and Commissioning Promag 31 4.4 Commissioning Before switching the measuring equipment on for the first time repeat the following checks: • Check the electrical connections and the allocation of the terminals. • Compare the data on the nameplate with the local mains voltage and frequency.

  • Page 39: Fault Location And Remedies

    (see Chapter 4). • An LED is also situated on the amplifier board of the Promag 31 (see Fig. 44). This LED is always lit as long as the measuring system is operating correctly. In case of error the LED is flushing, thus indicating an error.

  • Page 40: Instructions For Fault Location And Remedies

    5.2 Instructions for fault location and remedies Note! This instruction is only for the custody transfer meter Promag 31! Please contact the E+H service for the fiscal measurement system. During manufacture all units pass through various stages of quality control.

  • Page 41: Replacing The Transmitter Electronics

    5. Fault Location and Remedies 5.3 Replacing the transmitter electronics Note! The exchange of the transmitter electronics on the fiscal measuring unit Promag 31 can only be done by breaking the seal! After the exchange the authorised standards institution has to be contacted (seal!).
  • Page 42 5. Fault Location and Remedies Promag 31 Power supply board (Promag 31) Pin base for coil current cable Fixing screw Fixing screw Socket base Socket Plug for supply cable Fixing screw base Fig. 43 Measuring amplifier board (Promag 31) Pin base for connecting the flow simulator “Flowjack”...

  • Page 43: Repairs

    • Chemical and physical properties of the medium measured. Caution! Please carry out the following before you return the Promag 31 unit for repair: • Remove all traces of the medium still adhering. • This is particularly important if the medium is harmful for health, i.e. caustic, poisonous, cancerogenous, radioactive, etc.
  • Page 44 5. Fault Location and Remedies Promag 31 Endress+Hauser...

  • Page 45: Technical Data

    6.1 Dimensions and weights Note! The dimensions and weights of explosion protected versions may differ from the specifications given here. These are given in the Ex supplement to this manual. Promag 31 F, DN 15...300 Compact version Fig. 45 Remote-mounted version (FS/FL) Fig.
  • Page 46 The face-to-face length is identical with the selected nominal diameter and independent of pressure rating. Weight of compact version Weights Compact version: see table above Promag 31 transmitter: 3 kg (5 kg when wall-mounted) Sensor connection housing: appr. 1 kg Endress+Hauser...
  • Page 47 Promag 31 6. Technical Data Promag 31 F, DN 350...2000 (In general measuring points with DN >600 are don’t have to have the PTB licence for the transport of cold water (waste water). Compact version Fig. 47 Remote-mounted version (FS/FL) Sensor DN 350...2000...

  • Page 48: Technical Data: Sensor

    6. Technical Data Promag 31 6.2 Technical data: Sensor Promag F Nominal diameter DN 15...2000 Nominal pressure DIN: PN 10 (DN 200…2000) PN 16 (DN 65...150) PN 40 (DN 25...50) PN 16 /25 (DN 200...300), Option PN 40 (DN 65...100), Opt.
  • Page 49 Promag 31 6. Technical Data Inside diameter of measuring pipe [mm] Sensor Inside diameter of measuring pipe in mm, lining [mm] [inch] DIN [bar] ANSI [lbs] PTFE Hard rubber, (Teflon) Soft rubber (EPDM) Promag F – – " Class 150 1"...
  • Page 50 In fiscal metering applications operates within a temperature range of 0...+30 °C for cold water. Caution! At high medium and ambient temperatures it is necessary to mount the Promag F sensor and Promag 31 transmitter separately. Risk of the electronics becoming over-heated! Temperature range available only for remote-mounted...
  • Page 51 Promag 31 6. Technical Data Pressure limitations Promag F sensor (flange-mounted) Pressure limitations due to fluid temperature (DIN 2413 and 2505) Flange material: steel 37.2 Temperature [°C] Fig. 50 Pressure limitations due to fluid temperature (DIN 2413 and 2505) Flange material: stainless steel 1.4571 Temperature [°C]...

  • Page 52: Technical Data: Transmitter And Measuring System

    6. Technical Data Promag 31 6.3 Technical data: Transmitter and measuring system Housing material Powder-coated die-cast aluminium Protection IP 67 (EN 60529) Ambient temperature -20...+60 °C Resistance to shock Acceleration up to 2 g/2 h per day; 10...100 Hz and vibration...

  • Page 53: Nominal Diameter And Flow Rate

    If it is necessary to increase the flow velocity, this can be done by reducing the nominal diameter of the sensor. The table below summarizes the minimum and maximum full-scale values (incl. works setting) which can be set by miniature switches in Promag 31. Metrological Classes A [m...

  • Page 54: Conceptual Definitions

    6. Technical Data Promag 31 6.5 Conceptual definitions Temperature ranges for cold water: 0...30 °C Metrological Classes Indicate the range from Q (full scale value) down to Q in which the approved fiscal meter can measure. Within this complete range, the maximum error as defined by the metrology office shall not be exceeded.

  • Page 55: Error Limits

    Pulse output plus typ. ±10 µA Current output ± 0.1% o.r. ± 0.005% o.f.s. Repeatability Promag 31 F: ± 0.2% o.r. ± 0.05% of Q Options =desired reference flow rate for calibration (v = 2...10 m/s). Please quote Q when ordering...
  • Page 56 6. Technical Data Promag 31 Endress+Hauser...

  • Page 57: Index

    Promag 31 Index Index Adaptor pieces ....Gaskets ....11, 16 After calibration ....
  • Page 58 Index Promag 31 Repairs ....2, 43 Replacing the transmitter electronics ..41 Resistance of lining to vacuum ..49 Safety .
  • Page 60 Tel. (032) 6 72 31 31, Fax (032) 6 72 00 90 Belorgsintez Colombia Poland Minsk Colsein Ltd. Endress+Hauser Polska Sp. z o.o. Tel. (0172) 26 31 66, Fax (0172) 26 31 11 Taiwan Santafe de Bogota D.C. Warsaw Kingjarl Corporation Tel.

Table of Contents