KROHNE H250 M40 (01) PDF MANUAL

KROHNE H250 M40 (01) PDF SUMMARY:

What should I do if the packaging is damaged?

Inspect the packaging carefully for damages or signs of rough handling and report damage to the carrier and to the local office of the manufacturer.

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What should I check to ensure I have received the correct device?

• Do a check of the packing list to make sure that you have all the elements given in the order.
• Look at the device nameplate to ensure that the device is delivered according to your order.
• Check for the correct supply voltage printed on the nameplate.

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What should be observed when installing the device in the piping?

• 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/VDE3513, sheet 3.
• H250Hs are installed horizontally and H250U devices are installed vertically with the flow direction from top to bottom.
• A straight unimpeded inlet run of ≥ 5x DN upstream of the device and a straight outlet run of ≥ 3x DN downstream of the device are recommended.
• Screws, bolts and gaskets are to be provided by the customer and must be selected in accordance with the pressure rating of the connection or the operating pressure.
• The inside diameter of the flange deviates from the standard dimensions.
• Flange seal standard DIN 2690 can be applied without any limitation.
• Align the gaskets.
• Tighten the nuts with the tightening torques of the appropriate pressure rating.
• For devices with PTFE liner or ceramic liner and PTFE raised faces, refer to chapter “Tightening torques”.
• Control devices are to be positioned downstream of the measuring device.
• Shut-off devices are preferably to be positioned upstream of the measuring device.
• Before connecting, blow or flush out the pipes leading to the device.
• Pipes for gas flow need to be dried before the device is installed.
• Use connectors suitable for the particular device version.
• Align the pipes centrically with the connection bores on the measuring device so they are free of stresses.
• If necessary, the piping has to be supported to reduce the vibrations transmitted to the measuring device.
• Do not lay signal cables directly next to cables for the power supply.

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What is the minimum distance required between devices when several are installed next to one another?

A minimum distance of a > 300 mm / 11.8" between the devices is necessary.

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Where should the display be located on H250H flowmeters for horizontal installation?

H250H flowmeters for horizontal installation are to be installed in the pipeline so that the display is located on the side of the measuring tube.

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What should you do before carrying out any work on the electrical connections?

All work on the electrical connections may only be carried out with the power disconnected.

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What should you observe when working on electrical connections?

• Take note of the voltage data on the nameplate.
• Observe the national regulations for electrical installations.
• Observe without fail the local occupational health and safety regulations.
• Any work done on the electrical components of the measuring device may only be carried out by properly trained specialists.

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How do I set the limit switches?

Setting is carried out directly via contact pointers 1 and 2:

• Slide the scale away.
• Loosen the locking screw 3 slightly.
• Slide the scale back to the latching point.
• Set contact pointers 1 and 2 to the desired switching point.

After setting has been carried out, fix the contact pointers with the locking screw 3.

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How can the ESK be configured?

The ESK can be configured via HART® communication.

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What is available for configuration?

DD (Device Description) for AMS and PDM as well as a DTM (Device Type Manager) for PACTwareTM are available for configuration and can be downloaded free of charge from our website.

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What can be transmitted using the integrated HART® communication?

The current flow rate can be transmitted using the integrated HART® communication.

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What can be configured with HART® communication?

• A flow counter can be configured.
• Two limit values can be monitored.
• The limit values are assigned either to flow values or to the counter overflow.

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What diagnostic functions are performed cyclically in the ESK4 / ESK4A?

• Plausibility of FRAM data
• Plausibility of ROM data
• Working range of internal reference voltages
• Signal detection of the measuring range of the internal sensors
• Temperature compensation of the internal sensors
• Calibration based on the application
• Plausibility of counting value
• Plausibility of physical unit, system and selected unit

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What should I do if the device is not working correctly?

When an error is detected, a failure signal (high) is activated (current > 21 mA, typically 22 mA) via the analogue output. In addition more detailed information can be requested via HART® (CMD#48).

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What must be observed to meet the requirements of protection category IP66/68?

• Use only original gaskets and ensure they are clean and free of any damage.
• Replace defective gaskets.
• The electrical cables must be undamaged and must comply with regulations.
• The cables must be laid with a loop upstream of the measuring device to prevent water from getting into the housing.
• The cable feedthroughs must be tightened.
• Close the unused cable feedthroughs using blanking plugs.

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What should be observed when starting up the device?

• 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.
• Make sure materials are compatible.
• Slowly open the shut-off valve.
• When measuring liquids, vent the pipes carefully.
• When measuring gases, increase pressure slowly.
• Avoid float impact (e.g. caused by solenoid valves), as this is likely to damage the measuring unit or float.

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How do I activate and operate the loop check mode?

• Press and hold the microswitch for more than 6 seconds to activate loop check mode. The current output jumps to constant 4mA.
• Change the current output from constant 4 to constant 20 mA as often as you like by briefly pressing it (less than 6 seconds) to check the function of the measuring circuit.
• Exit loop check mode by holding down the microswitch (longer than 6 seconds). The current output jumps back to measuring mode.

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What should you ensure when activating the loop check mode?

When activating the loop check mode, ensure that no alarms are unintentionally triggered in the downstream system components.

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What happens if the microswitch has not been pressed for longer than 60 seconds?

If the microswitch has not been pressed for longer than 60 seconds, the ESK4 / ESK4A automatically reverts to measuring mode.

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How is the device operated?

The device is operated with the cover on the front open, using the mechanical keys, or with the cover closed using a bar magnet. The mechanical keys and keys for the bar magnet have the same functionality.

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How do you navigate through the menu structure?

Navigate through the menu using the →, ↑ and ^ keys. Pressing the → key takes you one menu lower. Use the ↑ key to go one menu point higher (e.g. from 1 to 2). Pressing the ^ key takes you one menu higher.

If you are already at the lowest level (function level), you can use the → button to go to the change mode, which can be used to set data and values.

If you are located at the first level (main menu), you can use the ^ key to exit the menu mode and return to the measuring mode.

If settings were changed, the query whether they should be saved will appear. Confirm this query with the → key or cancel it with the ^ key.

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How is operation started?

Operation is started using the → key.

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What happens if a control lockout is set?

If a control lockout is set, the code (→ → → ^ ^ ^ ↑ ↑ ↑) must be entered. The code can be set in menu 3.13. A warning is displayed and the indicator returns to measuring mode if no key is pressed within 5 seconds or if an incorrect code is entered.

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How is operator input exited?

Operation is exited by pressing the ^ key several times.

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What should you do if implausible entries were made?

Each time parameters or settings are changed, the measuring device carries out an internal plausibility check. If implausible entries were made, a warning message is shown. If this warning is confirmed with the ^ key, the display returns to the respective menu point without saving the relevant change.

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What are the factory settings for the H250 M40 menu indicator ESK4-T?

• OUTPUT B1: INACTIVE
• OUTPUT B2: INACTIVE
• PULSE WDTH: 100 ms
• PULSE/UNIT: 1 pulse / unit
• DISPLAY: Measured value
• ROTATION: 0°
• TIME CONST.: 1.0 s
• RESET COUNT.: NO
• RESET ERROR: NO
• RE-INIT I/O: NO
• LANGUAGE: ENGLISH
• FUNCTION B1: INACTIVE
• CONTACT B1: NO CONTACT
• FUNCTION B2: INACTIVE
• CONTACT B2: NO CONTACT
• FUNCTION B3: INACTIVE
• MULTIDROP POLLING ADD: 00
• 4mA CALIBR.: 4.000 mA
• 20mA CALIBR.: 20.000 mA
• ALARM CURRENT: ALARM HIGH
• FS&UNIT: Application specific
• COUNTER: Application specific
• EDIT UNIT: User defined unit / factor
• LFC: 4% ON, 6% OFF
• DESCRIPTOR: Free text
• ENTRY CODE: OFF
• BASIC SETTING: NO

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When is configuration via the menu necessary?

Subsequent configuration via the menu is only necessary if the intended use of the device is changed. The measuring device has been preset at the factory in accordance with the customer order.

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How can I test the 4-20mA output?

The 4-20mA output can be tested by setting various current values. During the test, the value of the current loop does not follow the current process.

The following values can be selected:

• NORMAL OP
• 4.0 mA
• 5.6 mA
• 7.2 mA
• 8.8 mA
• 10.4 mA
• 12.0 mA
• 13.6 mA
• 15.2 mA
• 16.8 mA
• 18.4 mA
• 20.0 mA
• 21.6 mA

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How can I test the alarm current?

The alarm current HIGH /LOW can be tested according to setting Fct. 3.10.

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How can I test the binary switching output B1?

The binary switching output B1 can be tested by changing its binary status. During the test, the binary status does not correspond to the current process.

The following options are available:

• NORMAL OP
• OPEN
• CLOSED

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How can I test the binary switching output B2?

See test OUTPUT B1.

The following options are available:

• NORMAL OP
• OPEN
• CLOSED

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How can I test the binary input B3?

The current binary status of the binary input B3 is displayed. External switching of the voltage applied to input B3 activates a change of the displayed binary status. A reaction to the switching of the voltage applied to input B3 only occurs when the function of B3 is activated (see Fct. 3.6).

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Where can I find information for device identification?

The following information is available for device identification:

• ELEC. REV. Electronics revision
• SN ESK4 Serial number ESK4
• PA ORDER Production order for the complete flowmeter
• DEVICE SN. Serial number for the complete flowmeter

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Where can I find information about software revision status?

The following information about software revision status is available:

• FW. ESK4 Software revision status for device insert ESK4-Basic
• FW. ESK4 I/O Software revision status for optional add-on module ESK4-T

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How do I select a language for the menu texts displayed?

The following languages are available:

• ENGLISH
• DEUTSCH
• FRANCAIS
• ITALIANO
• ESPANOL
• CESKY
• POLSKI
• NEDERLANDS
• DANSK

The menu texts are displayed in the selected language.

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What functions can be assigned to the binary switching output B1?

One of the following functions can be attributed to this output:

• INACTIVE
• SWITCHPOINT
• COUNTERLIM
• PULSEOUTP

One of the following functions can be selected as contact type:

• NO CONTACT
• NC CONTACT

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What are the functions of the binary switching point B1?

• SWITCHING POINT: The binary switching point B1 functions as a limit switch depending on the current flow value. Configuration of the switching point takes place under Fct. 1.1.1 (MEAS.VALUE B1)

• COUNTERLIM.: The binary switching point B1 functions as a limit switch depending on the current counter value. Configuration of the switching point takes place under Fct. 1.1.1 (MEAS.VALUE B1)

• PULSEOUTP.: The binary switching point B1 functions as a pulse output depending on the current flow value. Pulses can be generated up to a maximum of 10 Hz. Configuration occurs under Fct. 1.3.1 (PULSE WDTH) and Fct. 1.3.2 (PULSE/UNIT).

  Configuration under Fct 1.3.1 and Fct. 1.3.2 applies to both pulse outputs. If both B1 and B2 are configured as pulse outputs, both binary outputs behave in exactly the same way.

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What are the functions of the binary switching output B2?

One of the following functions can be attributed to this output:

• INACTIVE
• SWITCHPOINT
• COUNTERLIM
• PULSEOUTP

One of the following functions can be selected as contact type:

• NO CONTACT
• NC CONTACT

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What are the functions of the binary switching input B3?

• INACTIVE: The binary switching input B3 has no function.
• ACTIV H: The internal flow counter is reset to 0.0 if there is an H-level at input B3 for at least 100 ms.
• ACTIV L: The internal flow counter is reset to 0.0 if there is an H-level at input B3 for at least 100 ms.
• STARTH STOPL: The counter is started by creating an H level at the B3 input and stopped by creating an L level at the B3 input.
• STARTL STOPH: The counter is started by creating an L level at the B3 input and stopped by creating an H level at the B3 input.

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How do I configure the Multidrop Polling Address?

The polling address for HART® multi-drop mode can be configured from 0 to 15. When the address is 0, the HART® multi-drop mode is disabled. When the HART® multi-drop mode (Address 1…15) is activated, the current loop is inactive (fixed current value of 4.5 mA) and no longer follows the current process.

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How do I calibrate the 4mA and 20mA values?

4mA Calibration:

1. This function is not available in HART® multi-drop mode.
2. During calibration, the value of the current loop does not follow the current process.
3. If a current measuring device in the 4…20 mA loop detects a deviation from the desired value 4.000 mA, the measured value must be entered.
4. The correction value is accepted following the query SAVE and Confirm with YES.

20mA Calibration:

1. This function is not available in HART® multi-drop mode.
2. During calibration, the value of the current loop does not follow the current process.
3. If a current measuring device in the 4…20 mA loop detects a deviation from the desired value 20.000 mA, the measured value must be entered.
4. The correction value is accepted following the query SAVE and Confirm with YES.

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How do I set the alarm current?

• OFF: Error indication via the current loop is deactivated. The current loop follows the current process. This function is not available in HART® multi-drop mode.
• ALARM HIGH: Error indication via the current loop is activated (failure signal “high” acc. to NE43). This function is not available in HART® multi-drop mode.
• ALARM LOW: Error indication via the current loop is activated (failure signal “low” as per NE43). This function is not available in HART® multi-drop mode. This function is supported as of Electronic Revision 2.2.x.

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How do I use the Low Flow Cutoff (LFC) feature?

LFC stands for Low Flow Cutoff. To ensure a stable zero point of the current output, the current output can be stably set to 4.00 mA in a range to be selected.

• CONTROL OFF: LFC function is not active.
• CONTROL ON: LFC function is active.
• LFC ON_VALUE: Switch-on value 1: Value range 1…19% (from final value of measuring range). Flow is greater than the switch-on value. The current output corresponds to this. If the flow rate falls, the current output follows until the switch-on value 1. If the flow value continues to fall, the current output is switched to 4.00 mA. The switch-on value to be set must be smaller than the previously selected switch-off value.
• LFC OFF_VALUE: Switch-off value 2: Value range 2…20% (from the measuring range final value). The flow rate is 0. The current output is 4.00 mA. If the flow rate increases, the current output remains at 4.00 mA until it has reached the switch-off value 2. The switch-off value to be set must be greater than the previously selected switch-on value.

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How do I activate the input code for the local operating menu?

• OFF: Use of an input code is not activated.
• ON: If YES is selected, the last code that was entered has to be typed in. Factory code: → → → ^ ^ ^ ↑ ↑ ↑. If, after confirmation with YES, the → button is also pressed, then a new, individual, nine-element code can be typed in. The desired button combination is visualized on the display.

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How do I reset parameters to factory default?

There is always a safety prompt (yes/no), to avoid accidental resetting.

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What maintenance should be performed on the flowmeter?

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 indicator. Inspections should be carried out at least once per year. The device must be removed from the piping before cleaning.

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What components of the variable area flowmeter can be retrofitted?

Some of the variable area flowmeter components can be retrofitted:

• Float damping
• Indicator M40:
  • Limit switch module K1 / K2
  • Current output 4…20mA ESK4 / ESK4A
  • Counter module with LCD and I/O ESK4-T
  • Fieldbus interface ESK4-PA / FF

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How do I replace floats?

1. Remove the device from the piping.

2. Take the upper snap ring out of the measuring unit.

3. Take the upper float stop and float out of the measuring unit.

4. Insert the new float into the centre hole of the lower float stop and push into the measuring unit along with the upper float catcher. While doing this, the float’s upper guide rod must be guided through the middle hole of the float stop.

5. Insert the snap ring into the measuring unit.

6. Fit the device back into the piping.

   CAUTION! Pressurized pipes must be depressurized before removing the device. Empty pipes as completely as possible. In the case of devices used for measuring aggressive or hazardous media, appropriate safety precautions must be taken with regard to residual liquids in the measuring unit. Always use new gaskets when reinstalling the device in the pipeline. Avoid electrostatic charges when cleaning the surfaces (e.g. sight window)!

   CAUTION! An additional measuring error is to be expected if recalibration is not conducted.

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How do I retrofit float damping?

1. Take the upper snap ring 1 out of the measuring unit.
2. Take the upper float stop 2 and float 5 out of the measuring unit.
3. Fasten the locking ring 3 into the lower slot of the float’s guide rod.
4. Slide ceramic sleeve 4 on to the float’s guide rod and attach it to the top slot using the locking ring 3.
5. Insert float into the lower float guide in the measuring unit.
6. Retrofit the supplied damping cylinder with the integrated float stop 2 into the measuring unit.
7. Insert upper snap ring 1.

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How do I retrofit a limit switch?

1. Remove ESK4 / ESK4A add-on module (if available).
2. Merge contact pointer 2 in the middle.
3. Loosen the locking screw 1 on the contact pointer.
4. Insert the contact module into slot 3 of the bracket until the semi-circle 1 on the contact board surrounds the pointer cylinder.

The contact module connecting terminals feature a pluggable design and can be removed in order to connect the cables.

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What information is required when replacing or retrofitting an ESK4 / ESK4A?

When replacing or retrofitting an ESK4 / ESK4A, the following are required at the time of ordering:

• SN – serial number or
• SO – sales order

This information can be found on the indicator nameplate.

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How do I replace/retrofit an ESK4 / ESK4A?

The ESK4 / ESK4A is factory calibrated, making it possible to replace it or retrofit it without recalibrating.

1. De-energise the ESK4 / ESK4A.
2. Lift and remove the ESK4 / ESK4A with a screwdriver.
3. The ESK4 / ESK4A plug-in tongues 1 are plugged in under the two bolts 2 on the baseplate.
4. Slight pressure is used to press the ESK4 / ESK4A onto the spring pins 3 until it stops, firmly attaching the ESK4 / ESK4A.

If a change in measuring range, product temperature, product, density, viscosity or pressure is desired, this can be done with the KroVaCal program and with a HART® modem. However, each measuring unit is subject to its own physical limits, which the KroVaCal program correctly calculates, and may thus reject the desired change. If a change is performed using the program, the new data is also transmitted to the ESK4 / ESK4A.

The following can be set using the KroVaCal program and with a HART® modem:

• Device identification
• Device address
• Serial Number
• Measuring point identifier
• Digital measured value query in flow units, % and mA
• Test / setting functions
• Calibration 4.00 and 20.00 mA
• Set current output to any desired value

WARNING! Do not damage the indicating element!

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How do I replace or retrofit the 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)
• ESK4-PA (Profibus PA interface)
• ESK4-FF (Foundation Fieldbus interface)

More detailed information can be found in the service manual included with each retrofit or replacement set.

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What should I do if I need to return a device for inspection or repair?

If you need to return a device for inspection or repair, please pay strict attention to the following points:

• Due to statutory regulations on environmental protection and safeguarding the health and safety of the personnel, the manufacturer may only handle, test and repair returned devices that have been in contact with products without risk to personnel and environment.
• This means that the manufacturer can only service this device if it is accompanied by a certificate confirming that the device is safe to handle.

CAUTION! If the device has been operated with toxic, caustic, flammable or water-endangering products, you are kindly requested to:

• check and ensure, if necessary by rinsing or neutralising, that all cavities are free from such dangerous substances.
• enclose a certificate with the device confirming that is safe to handle and stating the product used.

To avoid any risk for service personnel, a form has to be accessible from outside of the packaging with the returned device.