KROHNE H250 M40 Handbook
  1. Manuals
  2. Brands
  3. KROHNE Manuals
  4. Measuring Instruments
  5. H250 M40 Series
  6. Handbook

KROHNE H250 M40 Handbook

Variable area flowmeter
Hide thumbs Also See for H250 M40:
Table of Contents

Advertisement

Quick Links

H250 M40
H250 M40
H250 M40
H250 M40
Variable area flowmeter
© KROHNE 07/2016 - 4000640704 - MA H250-M40 R04 en
Handbook
Handbook
Handbook
Handbook

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the H250 M40 and is the answer not in the manual?

Questions and answers

Related Manuals for KROHNE H250 M40

Summary of Contents for KROHNE H250 M40

  • Page 1 H250 M40 H250 M40 H250 M40 H250 M40 Handbook Handbook Handbook Handbook Variable area flowmeter © KROHNE 07/2016 - 4000640704 - MA H250-M40 R04 en...
  • Page 2 All rights reserved. It is prohibited to reproduce this documentation, or any part thereof, without the prior written authorisation of KROHNE Messtechnik GmbH. Subject to change without notice. Copyright 2016 by KROHNE Messtechnik GmbH - Ludwig-Krohne-Str. 5 - 47058 Duisburg (Germany) www.krohne.com 07/2016 - 4000640704 - MA H250-M40 R04 en...

  • Page 3: Table Of Contents

    CONTENTS H250 M40 1 Safety instructions 1.1 Intended use ........................5 1.2 Certifications ........................6 1.3 Pressure equipment directive..................6 1.4 Safety instructions from the manufacturer ..............8 1.4.1 Copyright and data protection ....................8 1.4.2 Disclaimer ..........................8 1.4.3 Product liability and warranty ....................9 1.4.4 Information concerning the documentation................
  • Page 4 CONTENTS H250 M40 5 Start-up 5.1 Standard device ......................38 5.2 Indicator ESK4-T ......................38 6 Operation 6.1 ESK4 / ESK4A - Loop Check Mode ................. 39 6.2 Operating elements ESK4-T................... 40 6.3 Basic principles of operation ESK4-T ................41 6.3.1 Description of the operating keys..................

  • Page 5: Safety Instructions

    SAFETY INSTRUCTIONS H250 M40 1.1 Intended use CAUTION! Responsibility for the use of the measuring devices with regard to suitability, intended use and corrosion resistance of the used materials against the measured fluid lies solely with the operator. INFORMATION! This device is a Group 1, Class A device as specified within CISPR11:2009. It is intended for use in industrial environment.

  • Page 6: Certifications

    SAFETY INSTRUCTIONS H250 M40 1.2 Certifications CE marking The device fulfils all applicable statutory requirements of the EU directives: • Pressure equipment directive • For devices with electrical installations: EMC directive • Devices for use in hazardous areas: ATEX directive as well as •...
  • Page 7 SAFETY INSTRUCTIONS H250 M40 Residual risk A risk analysis in accordance with the pressure equipment directive has been carried out for the devices . The residual risk is described as follows: • The devices are designed according to the valid and applicable rules and standards for static operation and their pressure resistance is calculated for the declared maximum pressure and temperature (no calculation for cyclical change).

  • Page 8: Safety Instructions From The Manufacturer

    SAFETY INSTRUCTIONS H250 M40 1.4 Safety instructions from the manufacturer 1.4.1 Copyright and data protection The contents of this document have been created with great care. Nevertheless, we provide no guarantee that the contents are correct, complete or up-to-date. The contents and works in this document are subject to copyright. Contributions from third parties are identified as such.

  • Page 9: Product Liability And Warranty

    SAFETY INSTRUCTIONS H250 M40 1.4.3 Product liability and warranty The operator shall bear responsibility for the suitability of the device for the specific purpose. The manufacturer accepts no liability for the consequences of misuse by the operator. Improper installation or operation of the devices (systems) will cause the warranty to be void. The respective "Standard Terms and Conditions"...

  • Page 10: Warnings And Symbols Used

    SAFETY INSTRUCTIONS H250 M40 1.4.5 Warnings and symbols used Safety warnings are indicated by the following symbols. DANGER! This warning refers to the immediate danger when working with electricity. DANGER! This warning refers to the immediate danger of burns caused by heat or hot surfaces.

  • Page 11: Device Description

    DEVICE DESCRIPTION H250 M40 2.1 Scope of delivery INFORMATION! Inspect the packaging carefully for damages or signs of rough handling. Report damage to the carrier and to the local office of the manufacturer. INFORMATION! Do a check of the packing list to make sure that you have all the elements given in the order.

  • Page 12: Device Version

    DEVICE DESCRIPTION H250 M40 2.2 Device version • H250 with indicator M40 • H250 with M40 indicator with display cut-out for ESK4-T 1. H250/RR/M40 • Local indicator without auxiliary power • Max. 2 limit switches, type NAMUR, NAMUR safety-oriented or transistor (3-wire) ®...

  • Page 13: Indicator Versions

    DEVICE DESCRIPTION H250 M40 2.2.1 Indicator versions The M40 indicator can be fitted with various modules. Basic version 1 Pointer module 2 Bolts for ESK4 / ESK4A attachment 3 Baseplate 4 Module profile 5 Pressure piece for ESK4 / ESK4A attachment...
  • Page 14 1 Basic module with electronic magnet sensors ESK4 / ESK4A 2 Connection bus module 3 DIP switch for bus settings For more details see the supplementary instructions "H250 M40 Foundation Fieldbus" and "H250 M40 Profibus PA" www.krohne.com 07/2016 - 4000640704 - MA H250-M40 R04 en...

  • Page 15: Float Damping

    DEVICE DESCRIPTION H250 M40 2.2.2 Float damping Float damping is characterised by high standstill times and self-centering. The damping sleeve is made of high performance ceramic or PEEK, depending on the medium and the application. Float damping can also be retrofitted for the user (refer to "Service").

  • Page 16: Nameplate

    DEVICE DESCRIPTION H250 M40 2.3 Nameplate INFORMATION! Check on the device nameplates, that the device is supplied according to your order. 0035 0102 H250/.././M40/..-Ex MD:201x P/A: 011123456.001 PED/G1/II/H PS: xxx bar PTmax: xxx bar TS: xx °C Tag-No.: PTB 11 ATEX 2012 X II2G Ex ia IIC T6 IECEx PTB 11.0069 X...

  • Page 17: Description Code

    DEVICE DESCRIPTION H250 M40 2.4 Description code The description code* consists of the following elements: 1 Device type H250 - standard version H250H - horizontal flow direction H250U - flow direction from top to bottom 2 Materials / versions RR - stainless steel C - PTFE or PTFE/ceramics ®...

  • Page 18: Electronic Revision

    DEVICE DESCRIPTION H250 M40 2.5 Electronic revision The electronic revision (sticker on the base module ESK4 / ESK4A) indicates the respective hardware/software status of the electronics. All add-on modules (ESK4-T, ESK4-FF and ESK4- PA) have an additional sticker indicating their respective firmware version.

  • Page 19: Installation

    INSTALLATION H250 M40 3.1 Notes on installation INFORMATION! Inspect the packaging carefully for damages or signs of rough handling. Report damage to the carrier and to the local office of the manufacturer. INFORMATION! Do a check of the packing list to make sure that you have all the elements given in the order.

  • Page 20: Installation Conditions

    INSTALLATION H250 M40 3.3 Installation conditions CAUTION! When installing the device in the piping, the following points must be observed: The variable area flowmeter must be installed vertically (measuring principle). Flow direction • from bottom to top. For installation recommendations please refer also to directive VDI/VDE 3513, sheet 3.
  • Page 21 INSTALLATION H250 M40 Minimum distance between devices When several devices are installed next to one another, a minimum distance of a > 300 mm / 11.8" between the devices is necessary. Take special note of the installation position for the H250H with horizontal flow...

  • Page 22: Tightening Torques

    INSTALLATION H250 M40 3.3.1 Tightening torques For measuring devices with PTFE liner or ceramic liner and PTFE raised face, tighten the flange threads with the following torques: Nominal size acc. to Stud bolts Max. torque EN 1092-1 ASME B16.5 ASME...

  • Page 23: Heat Insulation

    INSTALLATION H250 M40 3.3.3 Heat insulation CAUTION! The indicator housing may not be heat-insulated. The heat insulation 3 may only reach to the housing mounting 4. 1 Standard indicator M40 2 Indicator with HT extension CAUTION! The heat insulation 1 may only reach to the rear of the housing 2. The area around the cable entries 3 must be freely accessible.

  • Page 24: Electrical Connections

    ELECTRICAL CONNECTIONS H250 M40 4.1 Security information DANGER! All work on the electrical connections may only be carried out with the power disconnected. Take note of the voltage data on the nameplate! DANGER! Observe the national regulations for electrical installations! DANGER! For devices used in hazardous areas, additional safety notes apply;...

  • Page 25: Electrical Connection Indicator M40

    ELECTRICAL CONNECTIONS H250 M40 4.2 Electrical connection indicator M40 4.2.1 Limit switches K1/K2 The M40 indicator can be fitted with a maximum of two limit switches. The limit switch works as a slot sensor which is inductively activated via the semi-circular metal vane of the pointer. The switching points are set using the contact pointers.
  • Page 26 ELECTRICAL CONNECTIONS H250 M40 Limit switch connection terminals 1 2-wire limit switch NAMUR 2 3-wire limit switch 3 Limit switch Reed SPST 4 Terminal connection of Min. contact 5 Terminal connection of Max. contact 6 3-wire load 7 NAMUR isolated switching amplifier...
  • Page 27 ELECTRICAL CONNECTIONS H250 M40 Switch contact definition 1 MIN contact 2 MAX contact 3 Pointer vane with switching vane If the pointer vane goes into the slot, an alarm is triggered. If the pointer vane is outside of the proximity switch, a wire break in a NAMUR contact also triggers the alarm.

  • Page 28: Esk4 / Esk4A Current Output

    ELECTRICAL CONNECTIONS H250 M40 4.2.2 ESK4 / ESK4A current output The connecting terminals of the ESK4 / ESK4A have a pluggable design and can be removed in order to connect the cables. ESK4 / ESK4A connection 1 Current output of ESK4 / ESK4A 2 Power supply 14...30 VDC...
  • Page 29 ELECTRICAL CONNECTIONS H250 M40 Power supply Power supply Power supply Power supply INFORMATION! The supply voltage has to be between 14 VDC and 30 VDC. This is based on the total resistance of the measuring loop. To calculate this, the resistance of each component in the measuring loop (not including the device) must be added together.
  • Page 30 ELECTRICAL CONNECTIONS H250 M40 ® Load for HART communication INFORMATION! communication a load of at least 230 Ω is required. ® For HART The maximum load resistance is calculated as follows: DANGER! Use a twisted two-core cable to prevent electrical interference from impeding the DC output signal.

  • Page 31: Esk4-T Limit Outputs

    ELECTRICAL CONNECTIONS H250 M40 4.2.3 ESK4-T limit outputs Once the housing cover has been unscrewed, the scale can be removed. The connection terminals have a pluggable design and can be removed to connect the cables. 1 Binary output 1 2 ESK4 / ESK4A power supply / current output...
  • Page 32 ELECTRICAL CONNECTIONS H250 M40 1 NAMUR terminal connection 2 Isolated switching amplifier 3 OC switch output terminal connection 4 Power supply U ext. 5 Load R Value range for NAMUR NC contact NO contact Switching value reached < 1 mA >...

  • Page 33: Esk4-T Pulse Output

    ELECTRICAL CONNECTIONS H250 M40 4.2.4 ESK4-T pulse output INFORMATION! The binary outputs can also be operated as pulse outputs. When using the binary outputs as a pulse output, two separate signal circuits are required. Each signal circuit requires its own power supply.

  • Page 34: Esk4-T Binary Input

    ELECTRICAL CONNECTIONS H250 M40 4.2.5 ESK4-T binary input The binary input can be used to control the internal flow counter (start/stop/reset). Value range for NAMUR Binary input Terminal no. Connection Binary input 1 Function active HI 2 Function active LO This binary input can be activated in the menu of the indicator and can be configured to ACTIVE HI or ACTIVE LO.

  • Page 35: Esk4-Ff / Esk4-Pa Fieldbus Communication

    ELECTRICAL CONNECTIONS H250 M40 4.2.6 ESK4-FF / ESK4-PA fieldbus communication 1 FF HSE Bus / Profibus DP 2 Linking device / bus coupler 3 FF H1 Bus / Profibus PA, 2-wire with shielding 4 H250/M40/ESK4-FF / H250/M40/ESK4-PA ESK4-FF / ESK4-PA •...

  • Page 36: Harting Han 7D Connection

    ELECTRICAL CONNECTIONS H250 M40 4.2.7 Harting HAN 7D connection ® 1 Terminal pin assignment of HAN 7D - View of plug connection K1/K2: NAMUR R1/R2 Reed ESK4/ESK4A Terminal no. ® 1 Pin no. HAN contacts contacts NAMUR Reed 2 NAMUR MIN (-)

  • Page 37: Grounding Connections

    ELECTRICAL CONNECTIONS H250 M40 4.3 Grounding connections 1 Grounding connection in the indicator 2 Grounding connection outside DANGER! The grounding wire may not transfer any interference voltage. Do not use this grounding cable to ground any other electrical devices. 4.4 Ingress protection The measuring device meets all requirements of ingress protection IP66/68.

  • Page 38: Start-Up

    START-UP H250 M40 5.1 Standard device CAUTION! When starting up the device, the following points must be observed: Compare the actual operating pressure and the product temperature of the system with the • specifications on the nameplate (PS and TS). These specifications may not be exceeded.

  • Page 39: Operation

    OPERATION H250 M40 6.1 ESK4 / ESK4A - Loop Check Mode The ESK4 / ESK4A is equipped with a loop check function, enabling a simple test of the entire 4…20 mA current loop. It is activated and operated using a microswitch 1.

  • Page 40: Operating Elements Esk4-T

    OPERATION H250 M40 6.2 Operating elements ESK4-T The device is operated with the cover on the front open, using the mechanical keys keys, or with the keys keys cover closed using a bar magnet bar magnet bar magnet bar magnet.

  • Page 41: Basic Principles Of Operation Esk4-T

    OPERATION H250 M40 6.3 Basic principles of operation ESK4-T 6.3.1 Description of the operating keys Switch from measuring mode to menu mode → Switch to one menu level lower Open menu item and activate change mode Confirm query whether data should be accepted...

  • Page 42: Change The Settings In The Menu

    OPERATION H250 M40 6.3.3 Change the settings in the menu Starting operation Operation is started using the → key. If an operation lock is set, the code (→ → → ^ ^ ^ ↑ ↑ ↑) must be entered. The code can be set in menu 3.13.

  • Page 43: Overview Of The Units Esk4-T

    OPERATION H250 M40 6.4 Overview of the units ESK4-T Volume units can either represent real operating volumes (no prefix before the unit) or standard volumes virtually converted to reference statuses. Prefix Volume definition None Operating volume flow e.g. m /h or ft Volume flow at standard (norm.) conditions (0°C - 1.013 bara) acc.

  • Page 44: Error Messages Esk4-T

    OPERATION H250 M40 6.5 Error messages ESK4-T Error messages and warnings are indicated by one of the following symbols in the bottom left corner of the display. The ^ ^ ^ ^ key switches from the measured value display to the display of current errors / warnings.
  • Page 45 OPERATION H250 M40 Error message Description Category Remedy NO ZERO CAL The current output zero Perform calibration using ammeter and menu OF AO point 4.00 mA is not ® 3.10 or using standard HART tools/process calibrated = poss. control system and poss. external ammeter.

  • Page 46: Esk4-T Menu

    OPERATION H250 M40 Error message Description Category Remedy ERROR TIMEOUT Data not transferred, or Confirm menu item "1.6.3 WRITE INFO I/O". transferred incorrectly WARNING TIMEOUT from the ESK to the counter module 1 Category can be changed by user 6.6 ESK4-T menu 6.6.1 Factory settings...

  • Page 47: Menu Structure

    OPERATION H250 M40 6.6.2 Menu structure Main menu Submenu 1 Submenu 2 1 OPERATION 1.1 OUTPUT B1 1.1.1 INACTIVE, MEAS.VAL. B1, CNT. VAL. B1, PULSE WIDTH 1.1.2 HYST. B1, PULSE/UNIT 1.2 OUTPUT B2 1.2.1 INACTIVE, MEAS.VAL. B2, CNT. VAL. B2, PULSE WIDTH 1.2.2 HYST.
  • Page 48 OPERATION H250 M40 Main menu Submenu 1 Submenu 2 2 TEST & INFO 2.7 SOFT.VERSION 2.7.1 FW. ESK4 2.7.2 FW. ESK4 I/O 2.8 TAG NB. 8 characters 2.9 LONG TAG 32 characters 3 INSTALLATION 3.1 LANGUAGE 3.1.1 ENGLISH 3.1.2 DEUTSCH 3.1.3 FRANCAIS...

  • Page 49: Menu Description

    OPERATION H250 M40 6.6.3 Menu description 1 OPERATION Selection / Input Explanation 1.1 OUTPUT B1 1.1 OUTPUT B1 Output B1 is a binary switching output. In Fct. 3.2, one of the following functions can be 1.1 OUTPUT B1 1.1 OUTPUT B1 selected for this output: INACTIVE, SWITCH POINT, COUNT.
  • Page 50 OPERATION H250 M40 Selection / Input Explanation 1.2 OUTPUT B2 1.2 OUTPUT B2 1.2 OUTPUT B2 1.2 OUTPUT B2 Output B2 is a binary switching output. In Fct. 3.4, one of the following functions can be selected for this output: INACTIVE, SWITCH POINT, COUNT.
  • Page 51 OPERATION H250 M40 1.4 DISPLAY 1.4 DISPLAY 1.4 DISPLAY 1.4 DISPLAY Different measured values can be selected for permanent or alternating display. The reading on the display can be rotated. 1.4.1 MEAS’D VALUE Permanent display of flow in flow units...
  • Page 52 OPERATION H250 M40 2 TEST & INFO Selection / Input Explanation 2.1 4-20mA OUTP 2.1 4-20mA OUTP 2.1 4-20mA OUTP 2.1 4-20mA OUTP Testing the current loop by setting various current values. Note: Note: Note: Note: ® The test is not available in HART multi-drop mode (refer to Fct.
  • Page 53 OPERATION H250 M40 Selection / Input Explanation 2.8 TAG NB. 2.8 TAG NB. 2.8 TAG NB. 2.8 TAG NB. 8 digits Measuring point identifier Alphanumerical characters. Up to eight digits are possible. 2.9 LONG TAG 32 digits Measuring point identifier Alphanumerical characters.
  • Page 54 OPERATION H250 M40 Selection / Input Explanation NORM.OPEN Refer to CONTACT B1 3.6 FUNCTION B3 3.6 FUNCTION B3 3.6 FUNCTION B3 3.6 FUNCTION B3 INACTIVE The binary switching input B3 has no function. ACTIVE HI The internal flow counter is reset to 0.0 if there is an H level at input B3 for at least 100 ms.
  • Page 55 OPERATION H250 M40 Selection / Input Explanation 3.12 EDIT UNIT 3.12 EDIT UNIT 3.12 EDIT UNIT 3.12 EDIT UNIT User-defined unit with conversion to calibrated unit. 3.13 L.FL.CUTOFF 3.13 L.FL.CUTOFF 3.13 L.FL.CUTOFF 3.13 L.FL.CUTOFF L.FL.CUTOFF stands for low flow cutoff.

  • Page 56: Service

    SERVICE H250 M40 7.1 Maintenance Within the scope of routine maintenance of the system and pipelines, the flowmeter should also be inspected for signs of fouling, corrosion, mechanical wear and leaks, as well as damage to the measuring tube and the indicator.

  • Page 57: Retrofitting Float Damping

    SERVICE H250 M40 7.2.2 Retrofitting float damping • Take the upper snap ring 1 out of the measuring unit. • Take the upper float stop 2 and float 5 out of the measuring unit. • Fasten the retaining ring 3 into the lower slot of the float's guide rod.

  • Page 58: Replacement - Retrofitting Esk4 / Esk4A

    SERVICE H250 M40 7.2.4 Replacement - Retrofitting ESK4 / ESK4A CAUTION! When replacing or retrofitting an ESK4 / ESK4A, it is mandatory to indicate the serial number (SN) or sales order (SO) when ordering. This information can be found on the indicator nameplate.

  • Page 59: Replacement - Retrofitting Add-On Module Esk4-T / Pa / Ff

    SERVICE H250 M40 7.2.5 Replacement - Retrofitting add-on module ESK4-T / PA / FF The add-on module for the ESK4 / ESK4A can be replaced or retrofitted on-site without removing the device from the process control. • ESK4-T (Display module with LCD and I/O) •...
  • Page 60 SERVICE H250 M40 Spare part Order number DN50 DN50 DN50 DN50 Float CIV 55, 1.4404 X253041000 Float DIV 55, 1.4404 X253042000 Float TIV55, 1.4404 X253043000 Float DIVT 55, 1.4404 X253044000 Set float stop; standard (1 float stop, 1 span ring) X253050100 Set float stop;...
  • Page 61 SERVICE H250 M40 Spare part Order number Housing components indicator M40 Housing components indicator M40 Housing components indicator M40 Housing components indicator M40 Retrofit kit HT extension X251021000 Module carrier (profile rail) X251121100 Set housing attachment parts X251121300 Pointer system, complete *...
  • Page 62 SERVICE H250 M40 Spare part Order number Replacement cable gland Replacement cable gland Replacement cable gland Replacement cable gland Single cable gland M20x1.5 black, plastic - for non-Ex / Ex-i X251150300 Single cable gland M20x1.5 blue, plastic - for non-Ex / Ex-i X251150100 Single cable gland M20x1.5 brass - for non-Ex / Ex-i / Ex-nA...

  • Page 63: Availability Of Services

    SERVICE H250 M40 7.4 Availability of services The manufacturer offers a range of services to support the customer after expiration of the warranty. These include repair, maintenance, technical support and training. INFORMATION! For more precise information, please contact your local sales office.

  • Page 64: Form (For Copying) To Accompany A Returned Device

    SERVICE H250 M40 7.5.2 Form (for copying) to accompany a returned device CAUTION! To avoid any risk for our service personnel, this form has to be accessible from outside of the packaging with the returned device. Company: Address: Department: Name: Tel.

  • Page 65: Technical Data

    TECHNICAL DATA H250 M40 8.1 Functional principle The H250 flowmeter operates in accordance with the float measuring principle. The measuring unit consists of a metal cone in which a float can move freely up and down. The flow goes from bottom to top.

  • Page 66: Technical Data

    TECHNICAL DATA H250 M40 8.2 Technical data INFORMATION! • The following data is provided for general applications. If you require data that is more relevant to your specific application, please contact us or your local sales office. Additional information (certificates, special tools, software,...) and complete product •...
  • Page 67 TECHNICAL DATA H250 M40 Materials Device Flange Measuring tube Float Float guide Ring orifice H250/RR Stainless steel CrNi 1.4404 / 316L H250/HC ® ® Hastelloy Hastelloy (2.4610) solid or plated H250/F - Food CrNi steel 1.4435 CrNi-steel 1.4435 / 1.4404 H250/C - CrNi steel 1.4571 with TFM/PTFE...
  • Page 68 TECHNICAL DATA H250 M40 Ambient temperatures T with electrical components Version [°C] [°F] ESK4, ESK4A, ESK4-FF, ESK4-PA -40...+70 -40...+158 Limit switches SJ3,5-SN / I7S23,5-N / Reed SPST -40...+70 -40...+158 Limit switches SC3,5-N0 / SJ3,5-S1N / SB3,5-E2 -25...+70 -13...+158 1 Display contrast out of the temperature range 0...+60°C / +32...+140°F decreasing.
  • Page 69 TECHNICAL DATA H250 M40 Abbreviation High-temperature version ESK4 / ESK4A ® ® 2-wire current output 4…20 mA with HART 5 / HART 7 ESK4-T ESK4 with LCD, binary status outputs, digital counter and pulse output ESK4-FF FOUNDATION FIELDBUS interface ESK4-PA...
  • Page 70 16 mA Error current 23 mA Boot-up current after 10 ms < Nominal current For more details refer to the supplementary instructions "H250 M40 Foundation Fieldbus". ESK4-PA Physical layer IEC 61158-2 and FISCO model Communication standard Profibus PA profile 3.02...

  • Page 71: Pulse Output

    TECHNICAL DATA H250 M40 ESK4-T with LCD, binary inputs and outputs and digital counter Binary output Two binary outputs Galvanically isolated; passive Mode Switching output NAMUR or transistor (OC) Configurable as switch contact or pulse output NC / NO or max. 10 pulses/s...
  • Page 72 TECHNICAL DATA H250 M40 Approvals Standard Display Marking ATEX / IECEx M40 mechanical II2GD IIC II3GD IIC M40 electrical II2G Ex ia IIC T6 Gb II2G Ex d IIC T6 Gb II3G Ex nA IIC T6 Gc II2D Ex t IIIC T70°C Db II2D Ex ia IIIC T85°C Db...

  • Page 73: Dimensions And Weights

    TECHNICAL DATA H250 M40 8.3 Dimensions and weights Dimensions H250/M40 Front view Side view with heating High-temperature [mm] ["] [mm] ["] [mm] ["] [mm] ["] H250/RR Flange 5.56 9.85 5.91 5.91 H250/F Clamp connection H250/RR from 2" 600 lb 11.82 ISO 228 / ASME B1.20.1 / SMS...
  • Page 74 TECHNICAL DATA H250 M40 Weights Weights Weights Weights H250 Heating Nominal size EN 1092-1 with flange connection with Ermeto connection ASME [kg] [lb] [kg] [lb] [kg] [lb] DN15 12.6 ½" DN25 1" 16.5 12.8 DN50 2" 18.1 11.2 24.7 DN80 3"...
  • Page 75 TECHNICAL DATA H250 M40 Bolts and tightening torques For measuring devices with PTFE liner or ceramic liner and PTFE raised face, tighten the flange threads with the following torques: Nominal sizes EN Stud bolts Tightening torques Nominal size acc. to EN 1092-1...

  • Page 76: Measuring Ranges

    TECHNICAL DATA H250 M40 8.4 Measuring ranges ® H250/RR - Stainless Steel, H250/HC - Hastelloy Measuring span: 10 : 1 Flow values: Values = 100% Water: +20°C / +68°F Air: +20°C / +68°F, 1.013 bara / 14.7 psia Water Max. pressure loss Float Alu.
  • Page 77 TECHNICAL DATA H250 M40 ® H250/RR - stainless steel, H250/HC - Hastelloy Measuring span: 10 : 1 Flow values: Values = 100% Water: +20°C / +68°F Air: +20°C / +68°F, 1.013 bara / 14.7 psia Water Max. pressure loss Float Alu.
  • Page 78 TECHNICAL DATA H250 M40 H250/C - Ceramic/PTFE Measuring span: 10 : 1 Flow values: Values = 100% Water: +20°C / +68°F Air: +20°C / +68°F, 1.013 bara / 14.7 psia Flow Max. pressure loss Water Water Liner / Float PTFE...
  • Page 79 TECHNICAL DATA H250 M40 H250/C - Ceramic/PTFE Measuring span: 10 : 1 Flow values: Values = 100% Water: +20°C / +68°F Air: +20°C / +68°F, 1.013 bara / 14.7 psia Flow Max. pressure loss Water Water Liner / Float PTFE...
  • Page 80 TECHNICAL DATA H250 M40 H250H - Horizontal installation position Measuring span: 10 : 1 Flow values: Values = 100% Water: +20°C / +68°F Air: +20°C / +68°F, 1.013 bara / 14.7 psia ASME Cone Water [l/h] Pressure loss Air [Nm...
  • Page 81 TECHNICAL DATA H250 M40 H250H - Horizontal installation position Measuring span: 10 : 1 Flow values: Values = 100% Water: +20°C / +68°F Air: +20°C / +68°F, 1.013 bara / 14.7 psia ASME Cone Water [GPH] Air [SCFM] Pressure loss...
  • Page 82 TECHNICAL DATA H250 M40 H250U - Vertical installation position Measuring span: 10 : 1 Flow values: Values = 100% Water: +20°C / +68°F Air: +20°C / +68°F, 1.013 bara / 14.7 psia Flow direction Vertical downwards ASME Cone Water [l/h]...
  • Page 83 TECHNICAL DATA H250 M40 H250U - Vertical installation position Measuring span: 10 : 1 Flow values: Values = 100% Water: +20°C / +68°F Air: +20°C / +68°F, 1.013 bara / 14.7 psia Flow direction Vertical downwards ASME Cone Water [GPH]...
  • Page 84 • Process Analysis • Services Head Office KROHNE Messtechnik GmbH Ludwig-Krohne-Str. 5 47058 Duisburg (Germany) Tel.: +49 203 301 0 Fax: +49 203 301 10389 info@krohne.com The current list of all KROHNE contacts and addresses can be found at: www.krohne.com...

Table of Contents

Save PDF