Landis Gyr ULTRAHEAT T150 Ultrasonic Flow Meter User Manual

Landis Gyr ULTRAHEAT T150 Ultrasonic Flow Meter

General

Use

• The flow meter is used as a flow meter for calculators for heating or cooling consumption measurement in systems with water.
• The flow meter consists of a metal measuring part and an associated electronic unit. These two components are affixed with each other by cable.

General Notes
The flow meter left the factory in a faultless condition where safety is concerned. The manufacturer will provide additional technical support on request. Calibration relevant security seal on the flow meter must not be damaged or removed. Otherwise the guarantee and calibration validity of the flow meter will lapse.

• Keep the packaging so that you can transport the flow meter in its original packaging following expiry of the calibration validity.
• Lay all cables at a minimum distance of 500 mm to high voltage and high frequency cables.
• A relative humidity of < 93 % at 25 °C is permissible (without condensation).
• Avoid cavitation in the whole system due to overpressure i.e. at least 1 bar at qp and approx. 3 bar at qs (applies for approx. 80 °C).

Safety Information

• The flow meter may only be used in building service engineering systems and only for the applications described.
• The local regulations (installation etc.) must be adhered to.
• Adhere to the operating conditions according to the dial plate during use. Non-adherence can cause hazards and the guarantee will lapse.
• The flow meter is only suitable for circulating water in heating systems.
• The flow meter is not suitable for drinking water.
• Adhere to the AGFW requirements regarding circulating water (FW510).
• Do not lift the flow meter by the electronic unit.
• Be aware of sharp points on the thread, flange and measuring tube.
• Only personnel, trained in the installation and operation of meters in heating and cooling systems, may install and remove the flow meter.
• Only install or remove the flow meter when the pipes are pressure-less.
• After installing the flow meter, check the leak-tightness of the system.
• Guarantee and calibration validity will lapse if the calibration relevant security seals are broken.
• Only clean the flow meter from outside with a soft, lightly wetted cloth. Do not use any spirit or cleaning solvent.
• As far as disposal is concerned, the flow meter is a waste electronic appliance in the sense of European Directive 2012/19/EU (WEEE) and it must not be disposed of as domestic waste. The relevant national, legal regulations must be observed as the appliance must be disposed of via the channels provided for this purpose. The local and currently valid legislation must be observed.
• The meter contains lithium batteries. Do not dispose of the meter and the batteries with domestic waste.
• Observe the local stipulations and laws on disposal.
• You can return the lithium batteries to the manufacturer for appropriate disposal following use.
• When shipping please observes legal regulations, in particular, those governing the labelling and packaging of hazardous goods.
• Do not open the batteries. Do not bring batteries into contact with water or expose to temperatures above 80 °C.
• The flow meter does not have any lightning protection.
• Ensure lightning protection via the in-house installation.[

Installation

Proceed as follows to install the flow meter:

• Observe the dimensions of the flow meter and check whether there is sufficient space available.
•  Rinse the system thoroughly before installing the flow meter.
• Fit the flow meter vertically or horizontally between two slide valves so that the arrow on the housing and the flow direction match. Also observe the installation situations and the following examples of installation (see figure 2 and figure 3).
•  Seal the fittings to protect against manipulation.
• Loosen the elastic band or the cable tie, provided for the transport, from the volume measurement unit. In operation, the control cable should not depend directly on the volume measurement unit.
• If you install the flow meter for cold metering, follow the appropriate notes.
  Recommendation: If you are installing more flow meters in one unit, make sure that all the flow meters operate under the same mounting conditions.

Installation Notes
Note: When installing the flow meter the locally applicable installation regulation for flow meters must be observed.
Inlet or outlet sections are not necessary. If you install the flow meter in the common return of two circuits, determine a place of installation with a minimum distance of 10 × DN from the Tpiece. This distance ensures a good thorough mixing of the different water temperatures.

Examples of installation

Note: During installation it must be ensured that no water can enter the electronic unit during operation.

Installation for cooling metering
Note: It is recommended that the flow meter installed on the hot side.

• When installing as a cold meter it is essential that the black cover on the measuring tube is pointed to the side or[ downwards in order to avoid problems with condensation forming.
• Fit the electronic unit separate to the volume measurement[ tube, e.g. on the wall. Make a loop downwards in order to prevent condensation running along the connected lines into the electronic unit.

Installation of qp 150
Note: Use flange bolts with a length of at least 100 mm to install the flanged body in the pipeline.

• As an assembly aid two M8 threads are mounted on the flange.
• The threads allow the use of stainless steel eye bolts, for example, for a lifting device.
• The measurement insert in the flanged body should be positioned on the top. This allows a simple exchange of the measurement insert (see chapter 5).

Electronic unit
The ambient temperature of the electronic unit must not exceed 55 °C. Avoid direct sunlight. For water temperatures between 10 °C and 90 °C you can fit the electronic unit on the volume measurement unit or on the wall.

Aligning electronic unit
Proceed as follows to align the electronic unit:

1. Pull the electronic unit off the volume measurement unit.
2. Turn the electronic unit to the left or right through 90° or 180° as required.
3. Push the electronic unit onto the adapter plate in this position until it engages.

Wall fitting (split fitting)

• Fit the electronic unit to the wall at water temperatures below 10 °C and above 90 °C.
• For wall mounting proceed as follows:
  • Pull the electronic unit off the adapter plate.
  • Unscrew the adapter plate from the volume measurement unit.
  • Fit the adapter plate to the wall.
  • Push the electronic unit onto the adapter plate.

Power supply
The flow meter is equipped with a long life battery for 5 or 9 years of operation. You can take the operating time from the dial plate.

• Warning: Do not open the batteries. Do not bring battery into contact with water or expose to temperatures above 80 °C. Dispose of used batteries at suitable collection points.
• Note: Only batteries approved by the manufacturer may be installed.

Interfaces

• The flow meter is equipped with an optical interface in accordance with EN 62056-21 as standard.
• In addition, the flow meter is equipped with a pulse output and is delivered with a 2m two wire cable. The connecting cable can be lengthened with a cable 2 x 0.75mm2
  A distributing box is recommended.

Getting Started

For activation proceed as follows:

• Open the slide valves slowly.
• Check the system for leak-tightness and bleed air out carefully.

After more than 100 sec. the flow meter begins to work. If the operating limit is exceeded and the flow rate is positive, volume pulses are generated according to the pulse parameter settings.

• Check the measured value flow or the volume of progress on the connected calculator for plausibility.
• Vent the system until the flow rate value on the calculator is stable. Check the output.
• Fit the user locks to the fittings.

Exchange of the measurement insert qp 150

The flow meter with the volume measurement unit qp 150 includes an exchangeable measurement insert.
Attention: Renew the gasket every time that the measurement insert is removed and installed. Use only a genuine gasket.

Removing the measurement insert

• Warning: Only install or remove the measurement
  insert when the pipes are free of pressure.

• Note: Please make sure that no adhesive labels are
  damaged.

• Proceed as follows to remove the measurement insert:

  • If necessary, pull the electronic unit away from the adapter plate.
  • If necessary, remove the user locks.
  • Loosen the screws “a“ (see figure 9).
  •  Lift the measurement insert from the flanged body.

If the measurement insert cannot be removed, proceed as follows:

• Loosen the 2 screws “b” (see figure 7).
•  Insert 2 screws M10 with a length of at least 30 mm into the 2 free threads of the screws “b”.
• Screw in the screws evenly until the measurement insert can be removed.
  • Replace the measurement insert by another measurement insert.
  • If the measurement insert is not installed immediately, opening must be closed with the provided interim cover (available as
    accessory)

Installing the measurement insert
To install the measurement insert, proceed as follows:

• Check the sealing surface of the flanged body in the measurement insert for damage and cleanliness.
• Check the fit of the gasket “c“ (see figure 10) on the interim cover. The gasket must be properly positioned in the groove and be free of any damage.
• Put the measurement insert into the opening. Please note the flow direction. The arrow on the measurement insert and the arrow on the flanged body have to match.
• Screw in the 8 screws “a“ (see figure 7) with 35 Nm.
•  If necessary, fit the user locks.
  Warning: All screws “a” (see figure 7) and “b” (see figure 8) must be screwed

Functional Details

• The operating hours are counted from the first connection of the power supply.

• Missing hours are summated if there is an error and the flow meter is thus unable to take a measurement.

• Operating hours and missing hours can be reset through the service software.
  Note: Detailed information’s on resetting operating hours and missing hours with the service software you will find in the UltraAssist user manual.

• Volume readings, maximum flow rates and missing hours are stored monthly for 36 months.

• The device number and the firmware version number are issued by the manufacturer.

Technical Data

Note: The information on the flow meter must be observed!

• General
  • [Measuring accuracy Class 2 or 3 (EN 1434)
  • Environment clas s A (EN 1434) for indoor installation
  • Mechanical class M1 *)
  • Electromagnetic class E1 *)
  • *) according to 2014/32/EU Directive on Measuring Instruments
  • Ambient humidity < 93 % rel. humidity at 25 °C, without condensation
  • Max. height 2000 m above sea level
  • Storage temperature – 20 … 60 °C
• Electronic unit
  • Ambient temperature 5 … 55 °C
  • Housing protection rating IP 54 according to EN 60529
  • Power supply Battery for 5 or 9 years
  • Optical interface Standard, EN 62056-21
  • Communication Pulse output
  • Separability Always, optional cable length
• Pulse output
  • Type Open drain
  • Dielectric strength 500 Veff against ground, galvanic insulated
  • Pulse significance Optional
  • Pulse length Optional
  • Pulse sequence In packages every 0.5 s (not equally spaced)
  • Cable length 2 m
  • Voltage Maximal 30 V
  • Current Maximal 30 mA
  • Voltage drop < 0.3 V at 10 mA
  • Polarity b[ipolar
• Volume measurement unit
  • Protection class
  • IP 54 / IP 65 according to EN 60529
  • IP 6[8 (at qp 150) according to EN 60529
  • Mounting place Hot[ side / cold side
  • Installation position Any
  • Flow straightening None
  • Measuring range 1: 100 resp. 1:50
  • Temperature range 5 … 130 °C National type approvals may be different.
  • recommended
  • heat application 10 … 130 °C
  • cooling application 5 … 50 °C
  • Maximum overload 2.8 x qp
  • Nominal pressure PN16 (1.6 MPa; PS16), PN25 (PS25)

Declaration of Conformity

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