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Ultrasonic Flowmeter USM GT400 OPERATING INSTRUCTION Reliable Measurement of Gas Read the instructions before starting work!
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+49 6033 897-173 +49 6033 897-130 E-Mail service@rmg.com The Ultrasonic Flowmeter USM GT400 Original Document OPERATING INSTRUCTION 9/4/2018 is the original document. This document may serve as a reference for translations into other languages. Please use in case of any uncertainties the German version as main reference.
For this reason, you may only use the device as intended and in technically sound condition. If the ultrasonic gas meter is not used for its intended purpose, warranty claims will be void. September, 4 2018 Ultrasonic Flowmeter USM GT400...
• recognize dangers that could be caused by the used flow medium. • training / education by RMG for working with gas measuring instruments. • education / instruction in all country-specific standards and directives to be observed for work that is to be carried out on the device.
Validity of the manual This manual describes the Ultrasonic Flowmeter USM GT400. The Ultrasonic Flowmeter USM GT400 device is only a part of a complete on site system. Observe also the instructions of other components of the site system.
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1 About this manual Ultrasonic Flowmeter USM GT400 September, 4 2018...
Unidirectional operation 10 D (no flow conditioner) 1.5 D to 5 D Unidirectional operation 3 / 5 D (with RMG or stan- 1.5 D to 5 D dardized flow conditioner) Bidirectional operation 10 D (no flow conditioner) 10 D (no flow conditioner)
Fig. 2-1: Connection assignment on the terminal strip 10 Connect the computer to the terminals RS 485-0. 11 Allocate the terminal strips according to the applications. Option: connect ERZ 2000 (-NG) to RS 485-1. Ultrasonic Flowmeter USM GT400 September, 4 2018...
The marking of the cable (numbers) is (always) identical to the terminal assignment. Earthing Earthing screw M6 Earthing screw M6 Earthing cable Fig. 2-2: Connect to earth - Ultrasonic gas meters DN150 (6") and DN100 (4") September, 4 2018 Ultrasonic Flowmeter USM GT400...
Changes to the pre-assembly are more extensive and are therefore not described in this brief instruction. If this should be necessary, you will then find the description: Section 10.1.3, "Calibration and Service Switch" on page 119 Ultrasonic Flowmeter USM GT400 September, 4 2018...
Covers of the transducer lines transducer lines Ultrasonic electronics Lifting eyes Joining flanges Transducer Retaining bolts Fig. 3-1: Main components of the ultrasonic gas meter The ultrasonic gas meter consists of the following main components: September, 4 2018 Ultrasonic Flowmeter USM GT400...
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The retaining bolts are mounted when delivering the device. The retaining bolts secure the product from tipping over or rolling away. The bolts must be mounted to ensure for a safe installation or de-installation. Ultrasonic Flowmeter USM GT400 September, 4 2018...
RMGView software. Service and calibration switch (A) The service switch (right switch) is only for RMG service. The ser- vice switch is, e.g., used to install new firmware. The calibration switch (left switch) protects the parameters against unauthorized changes.
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The calibration switch is open. The value of the parameter can be changed. The calibration switch is closed. The value of the parameter can- not be changed. Forth line Shows the warning, alarm and status messages, e.g., -01 power failure Ultrasonic Flowmeter USM GT400 September, 4 2018...
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When holding for a longer time, you can change the lines with quick return. Enter values. Reset button The reset button (A) is for RMG service only. If the reset button is pressed, the ultrasonic electronics is restarted. Switches Calibration switch (A): Activate to change parameters.
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Warning Warning message is Warning is active. stored. Reset Reset is running. — Calibration Calibration switch is — open. Service Service switch is — open. Control panel Panel is being — pressed. Ultrasonic Flowmeter USM GT400 September, 4 2018...
The arrangement of the transducers in the three levels is shown in three section representations. Four transducers are installed per level. The transducers form two paths per level for the measurement. September, 4 2018 Ultrasonic Flowmeter USM GT400...
TD1 to transducer TD2 more quickly than the other way around. This is caused physically by vector addition of the flow velocity to the speed of sound, the arrow above the shows the direction of flow. September, 4 2018 Ultrasonic Flowmeter USM GT400...
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2 d 2 d TD12 TD21 TD12 TD21 Fig. 4-3: Formula, average path velocity Legend Average flow velocity Speed of sound : Path angle to the pipe Path length Ultrasonic Flowmeter USM GT400 September, 4 2018...
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Fig. 4-5: Formula, flow velocity Legend = Average flow velocity (m/s) = Weighting factor with regard to the flow profile The summation and the weighting specified result from the math- ematic Gaussian integration procedure. September, 4 2018 Ultrasonic Flowmeter USM GT400...
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If the values are within given ranges, then good mea- surement conditions can be assumed. If the values are outside the accuracy of the reading may be affected by disturbed flow conditions. Please contact in this case the RMG service. "Manufacturer" on page I Turbulence Due to the actual flow, in particular the turbulence, there will be ...
Correction of the baseline for the velocity There are several influences (eg. Reynolds number) resulting in a not exactly proportional relation between the measured and ac- cording to the formula 4.5 calculated mean velocity to the exact September, 4 2018 Ultrasonic Flowmeter USM GT400...
v const G – const G – const G – ------------------------------ - ------------------------------ - Fig. 4-14: Formula - Basic correction of the device Legend Deviation of the error curve Ultrasonic Flowmeter USM GT400 September, 4 2018...
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F and flow Q . The characteristic curve correction K is used for further calculation of the corrected process volume flow. ---------------- Fig. 4-17: Formula, characteristic curve correction September, 4 2018 Ultrasonic Flowmeter USM GT400...
SoS calculation via gas components The second version of SoS calculation uses pressure, tempera- ture and composition of the gas to determine the SoS according to the specifications of the AGA 10 standard (AGA Report No. 10, Ultrasonic Flowmeter USM GT400 September, 4 2018...
1 results in the higher temporal resolution for the gas composi- tion, respectively the calorific value. 4.3.3 Extended SoS calculation The third possibility SoS calculation is presented under the name "Extended SoS measurement". This new method is introduced as an additional determination. September, 4 2018 Ultrasonic Flowmeter USM GT400...
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If correct, the result of the extended measurement is preferred due to its higher accu- racy. Otherwise, the standard method 1 is used; after any change Ultrasonic Flowmeter USM GT400 September, 4 2018...
4.4.1 Option 4: Data input on fixed defaults If there are no live data available for the gas analysis, then the gas data can be stored as fixed values in the USM-GT-400. For September, 4 2018 Ultrasonic Flowmeter USM GT400...
All other possibilities to transmit the volume fractions of the indi- vidual gas components on the USM-GT-400, will use interface 2 of the USM-GT-400. Terminal connections The following figure shows the terminal connections. Ultrasonic Flowmeter USM GT400 September, 4 2018...
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AGA-10 calculation or default values AX-04 and AX- Fig. 4-23: Pressure and Temperature input The electric connection of pressure (p) and temperature (T) has to be done a terminals 26 to 31; AUX1 = p; AUX2 = T. September, 4 2018 Ultrasonic Flowmeter USM GT400...
RMGBus telegram via the RMGBus protocol. Therefore, the coordinate AX-01 “SoS AGA-10 source data“ is set to "Serial port 2" and the serial interface in the mode "RMG- Bus". Additionally the parameters of the interfaces USM-GT-400 and the RMGBus master device have to be aligned to each other.
Parameter AX-10 "Modbus Master Target" sets which device the USM-GT-400 is addressing. If the GC9300 is chosen no Modbus register needs to be set at AZ-01 to AZ-54 for status and part of the gas component. September, 4 2018 Ultrasonic Flowmeter USM GT400...
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24 components adding some (surplus) gas components to other components. Neo-pentane: added to n-pentane (see ISO 12213-2) Propene: added to propane Ethene: added to CO (see ISO 12213-2) Ultrasonic Flowmeter USM GT400 September, 4 2018...
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100 mol-% (can only be applied if the sum is > 0 mol-% and < 110 mol-%). Otherwise, Bit 0 in AW-01 "SOS calculation status" will be set and the calculation takes place with 100 mol-% meth- ane instead. Fig. 4-25: Sequence of gas components treatment September, 4 2018 Ultrasonic Flowmeter USM GT400...
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If there are new gas components latest within three times of the given timeout time, the error status will be reset. Temperature Error The temperature measurement is disturbed. Calculation will be done with the default value. September, 4 2018 Ultrasonic Flowmeter USM GT400...
4 signals superimposed. If the F-Batch is active the ring down time should be chosen as short as possible, preferably to 0 ms. The slow batch mode can be activated in coordinate AI-09; it is to be squared for all paths, too. Ultrasonic Flowmeter USM GT400 September, 4 2018...
.......... 45 Responsibilities of the operator ....... 46 Intended use The Ultrasonic Flowmeter USM GT400 device is used to mea- sure the flow velocity of the gases in a pipeline and calculate the operating flow during running operation.
This information gives you tips on how to simplify your work. With this screen, you additionally receive further information on the device or the work process. Ultrasonic Flowmeter USM GT400 September, 4 2018...
DIN VDE 0105, IEC 364 or a similar national standards.. • Initial start up must only be carried out by especially trained personal (training by RMG) or by service personal from RMG. • Maintenance and cleaning must only be carried out by the respectively qualified specialist personnel.
Lift the device only on the intended lifting eyes. • Before lifting, make sure that the load is safely secured. • Never stand under suspended loads. • Observe the weight specifications for the ultrasonic gas meter at hand. Ultrasonic Flowmeter USM GT400 September, 4 2018...
• Use only an Atex or IECEx certified EMC cable screw con- nection in the protection category increased safety with a metric thread (M20x1.5). September, 4 2018 Ultrasonic Flowmeter USM GT400...
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Before start up, seal all open connections with certified blind plugs according to 94/9/EC. • Replace the blind plugs that have been installed for transpor- tation with certified blind plugs according to 94/9/EC or NEC 500. Ultrasonic Flowmeter USM GT400 September, 4 2018...
Cleaning agents / corrosion protection used may be harmful to health. • Always wear protective gloves and eye protection. • Ensure for good ventilation and do not inhale vapors! • Observe the safety data sheet! September, 4 2018 Ultrasonic Flowmeter USM GT400...
• In doing so, observe the specifications of the system manu- facturer or system operator. Use only genuine spare parts from RMG. • It is forbidden to install spare parts from third-party manufac- turers. It voids all guarantees and claims for guarantee. The explosion protection is no longer ensured.
Operate the device only in a sound and complete state. If you carry out technical changes to the device, safe operation can no longer be guaranteed. • Use the device only in its original state. September, 4 2018 Ultrasonic Flowmeter USM GT400...
„Qualification of the personnel“ on page 39 • Using suitable measures, ensure that that constructive risks are ruled out when using the device. Inform your personnel about the risks when using the device. Ultrasonic Flowmeter USM GT400 September, 4 2018...
Checking the device after storage ......63 Transport The device will be packed to customer-specifics according to the transport requirements. In this chapter you will receive informa- tion on the standard packaging of the device. September, 4 2018 Ultrasonic Flowmeter USM GT400...
The following are included in the scope of supply: Component Quantity Ultrasonic gas meter USM GT400 (including US-Electronic) Extension box In countries where ATEX / IECEx standards apply, connected at the ultrasonic electronic) Special tools to open the US electronic...
Options for the outer packaging can be, for example: • sea-proof wooden crate • cardboard packagings 1 Remove the outer packing. September, 4 2018 Ultrasonic Flowmeter USM GT400...
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6 Transport and storage 2 Recommendation: store the outer packaging for the future or for returning to RMG for service work. Retaining bolts Fig. 6-2: Retaining bolts of the device 3 Make sure that the retaining bolts (A) are screwed in, if necessary.
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• Observe the weight specifications for the ultrasonic gas meter at hand. 1 Attach a suitable lifting gear (B) to the lifting eyes (A) of the device. 2 Tension the chain of the lifting gear slightly to secure the device. September, 4 2018 Ultrasonic Flowmeter USM GT400...
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5 Pull the Euro pallet from under the device. 6 Recommendation: store the Euro pallet for the future or for returning to RMG for service work. Ultrasonic Flowmeter USM GT400 September, 4 2018...
Removing the protective sticker / blind plugs from the flanges The flanges are supplied sealed with a protective sticker or blind plug made of plastic. September, 4 2018 Ultrasonic Flowmeter USM GT400...
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2 Remove any residual adhesives or other impurities from the sealing surfaces of the flange using a gentle cleaning agent. Remove the blind plugs 1 Pull the blind plugs out of the openings. Ultrasonic Flowmeter USM GT400 September, 4 2018...
If you no longer have the original packaging material and sealing set, you can order the packaging material and sealing set re- quired from RMG. RMG service would be pleased to consult you as to how the de- vice should be packed. You need the following for standard packaging: •...
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Recommendation: remove the retaining bolts only if it is absolutely necessary. This is the only way to ensure that the device does not tip over or roll away after being installed. Ultrasonic Flowmeter USM GT400 September, 4 2018...
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1 Attach a suitable lifting gear (B) to the lifting eyes (A) of the device. 2 Tension the chain of the lifting gear slightly. 3 Undo the bolted connections from the system so that the device can be lifted out. September, 4 2018 Ultrasonic Flowmeter USM GT400...
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5 Carefully place the device on the Euro pallet with the lifting gear. 6 Secure the device using the tensioning straps (B). The tensioning straps must have a tight fit and must secure the device. Ultrasonic Flowmeter USM GT400 September, 4 2018...
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ESSO RUST BAN 397, Mobil Oil Tecrex 39. Chapter 11.7, „Cleaning the device“ on page 148 2 Place the corrosion protection mat (A) inside the device. September, 4 2018 Ultrasonic Flowmeter USM GT400...
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The following sealing bolts supplied must be used in countries where CSA / FM guidelines apply. If only transport is taking place, you can use 1/2" or 1" screws with appropriate length as an alternative. Ultrasonic Flowmeter USM GT400 September, 4 2018...
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2 Stick the protective sticker (A) onto the sealing surface of the flange (B). Sealing the flange with blind plugs 1 Insert the blind plugs into the opening of the flange so that the blind plugs have a tight fit. September, 4 2018 Ultrasonic Flowmeter USM GT400...
Danger of poisoning! • Avoid long storage times. • Have the device checked by RMG service if the storage time is lon- ger than one year. For this purpose, send the device to RMG. Ultrasonic Flowmeter USM GT400...
Danger of poisoning! • Avoid longer storage times. • Have the device checked by RMG service if the storage time is lon- ger than one year. For this purpose, send the device to RMG. Checking the device for any signs of damage There is a high risk to life and limb if a damaged device is used.
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6 Transport and storage Ultrasonic Flowmeter USM GT400 September, 4 2018...
Two devices series connected (Face to Face) ..74 Flow computer ........... 75 Connection flanges The devices from RMG are equipped with connection flanges. The joining dimensions of the flanges for the pipelines to be con- nected must correspond to the connection dimensions of the device flanges.
Variant 3 bolts with reduced shank may only be used for devices within the area of PED (Pressure Equipment Directive) application. Notice DN80 Screws are provided by RMG for the USM-GT400 for diameter DN80. Depending on the flange type the following hexagonal bolts are used for DN80: PN16/10 PN40/25...
Measurement Canada (MC), the device must be installed with an inlet and outlet piping. With this installation, the device can be used for calibrated mea- surements and for secondary measurements. Unidirectional operation Temperature sensor Fig. 7-4: Unidirectional operation September, 4 2018 Ultrasonic Flowmeter USM GT400...
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7 Construction and Planning Flow conditioner Temperature sensor Fig. 7-5: Unidirectional operation - compact installation Ultrasonic Flowmeter USM GT400 September, 4 2018...
Malfunctions from pairing the devices incorrectly If the devices do not match one-another for these installation possibili- ties, incorrect measurements may occur. • Please consult RMG if a Face-to-Face installation is possible with the desired devices and number of devices. Tapered bore Inner diameter Fig.
ERZ 2000 NG • ERZ 2400 If you want to use the flow computer from RMG specified above, you do not have to carry out any configurations. The flow comput- ers from RMG can directly process the protocol of the ultrasonic gas meter from RMG directly.
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The cable length must not exceed a length of 500 meters / 1640 feet. More information on the installation of a flow computer can be found here: Operating instructions of the flow computer Ultrasonic Flowmeter USM GT400 September, 4 2018...
If the device is put down without the retaining bolts, it can tip over or roll away. Serious injuries may occur. • Before starting work, make sure that the retaining bolts are screwed Ultrasonic Flowmeter USM GT400 September, 4 2018...
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4 Pull the blind plugs (C) out of the connection. 5 Screw glandes not required must be replaced by explosion- proof screw connections. Recommendation: store the blind plugs for the future or for returning to RMG for service work. September, 4 2018 Ultrasonic Flowmeter USM GT400...
Risk of intoxication and explosion! • Make sure that the flat seal does not protrude over the sealing sur- face into the pipeline. Observe the instructions for the dimensions! Chapter 13.5,„Weights and dimensions“ on page 163 Ultrasonic Flowmeter USM GT400 September, 4 2018...
2 Tighten the bolts cross-wise in order to avoid tensioning. Notice In general, only the horizontal installation of the USM GT400 is strongly recommended. Turning the meter by more than 2 flange holes should not be used to avoid the collection of condensate in the sensor pockets.
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Connecting the connection box This version of the connection box is supplied in countries where the ATEX / IECEx standards apply. The external connecting housing is pre-assembled and connect- ed electrically to the ultrasonic electronics ex-factory. Ultrasonic Flowmeter USM GT400 September, 4 2018...
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Observe the following when installing: • The cables must be connected according to the lettering. • Select a maximum cable length of three meters. If you need to use longer cables, please contact RMG services. September, 4 2018 Ultrasonic Flowmeter USM GT400...
2 x direction detectors for bi-directional operation (I/O1/2) • Interface for RMGView (RS 485 0) • Interface for an RMG flow computer (RS 485 1) • Interface for any flow computer (RS 485 2) • Analog output (4-20 mA) •...
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4 x 2 x 0.75 mm² Twisted pair cable (TP) are only required in case of multiple cir- cuits in one cable. Otherwise, LIYCY 2 x 0.75 mm² is sufficient for all signal outputs. September, 4 2018 Ultrasonic Flowmeter USM GT400...
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The numbers given below at each figure only counts the limited number of cables; all cables are labeled due to the number of the basic upper terminal block. Ultrasonic Flowmeter USM GT400 September, 4 2018...
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For this version, the ERZ 2000 or ERZ 2000 NG cannot be con- nected via the DZU protocol (RS 485-1). Version 4: Maximum assignment 1/2" and 3/4" sealing fitting Fig. 8-10: ½“ and ¾“ sealing fittings with up to 31 wires of size AWG 18 Ultrasonic Flowmeter USM GT400 September, 4 2018...
8.3.1 Connecting the power supply Power supply Fig. 8-11: Connection assignment on the terminal strip 1 Connect the power supply to the terminals 24 VDC (A). Figure 8-16 on page 94 September, 4 2018 Ultrasonic Flowmeter USM GT400...
IGM- and sequence for sequence for DZU-protocol, too, data types Long data types Long parameterizable and Float and Float byte sequence for data types Long and Float Ultrasonic Flowmeter USM GT400 September, 4 2018...
Connection assignment on the terminal strip 1 Connect the computer to the terminals RS 485-0 (A). In order to connect, you need an interface converter from USB to RS 485. (please see recommendations in chapter 8.3.4). September, 4 2018 Ultrasonic Flowmeter USM GT400...
(A). 1 Open the cover of the connection box. „Open the connection box (Ex-de)“ on page 83 Connecting the flow computer from RMG Connection via data cable for ERZ 2000 Use the following cable: •...
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2 (and 2 to 1) freely. 1 Connect the first flow computer to the terminals RS 485-1 (A). 2 Connect the second flow computer to the terminals RS 485-1 (B). September, 4 2018 Ultrasonic Flowmeter USM GT400...
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Warning and alarm messages are also available. You also have to connect a direction contact for bi-directional operation. 2 Connect the terminal Warn (A) for warning messages. 3 Connect the terminal Alarm (B) for alarm messages. Ultrasonic Flowmeter USM GT400 September, 4 2018...
Therefore the connection via DSfG-device-F has become the standard in Germany. Since the USM GT400 does not have its own DSfG bus access, its DSfG-instance-F protocol is implemented externally via a flow computer, the ERZ 2000-NG, which has this access. To realize the access the necessary data are transferred between the ...
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The corresponding settings can be found in the VK Modbus Master USM menu in the ERZ2000-NG. The corresponding register expressions can be found in the VJ register expressions menu. In the USM GT400, the Modbus registers of instance F are listed in column BA. Electrical connection The following figure shows the rear panel of the ERZ2000-NG.
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RS 485-2 is provided with terminal 21 (GND), terminal 22 (Data +) and terminal 23 (Data -). Fig. 8-19: Connection of the RS 485-2 (22 +, 23 -) at the USM GT400 September, 4 2018 Ultrasonic Flowmeter USM GT400...
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COM6 and 7 slots, which is the first one from the right looking from the display. Fig. 8-20: Configuration of the option card to be used as COM 6 and 7 of the ERZ 2000-NG Ultrasonic Flowmeter USM GT400 September, 4 2018...
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GB Flow rate parameter is activated, the further necessary settings are suggested in this menu (light yellow-green background): • GB16 Volume transducer mode -> "DZU" mode • GB51 Device type -> "USM GT400" • GB53 Meter type -> "USZ" (or "USM") September, 4 2018...
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8 Installation Fig. 8-22: Selection of DZU in Vol.transd. mode GB16 The proposal must then be "entered", i. e. accepted. Ultrasonic Flowmeter USM GT400 September, 4 2018...
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"DSfG: F-instance" must be defined in the menu VJ register expressions by button selection. The corresponding registers for the Modbus communication are thus suggested. Fig. 8-23: Selection of DSfG: F-Instanz in VJ98 September, 4 2018 Ultrasonic Flowmeter USM GT400...
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Therefore, the Modbus Master communication for GC1 and GC2 in the coordinates IL50 and IL51 must be realized via the serial interface COM7. It has to be deactivated if no Modbus IP is used. Ultrasonic Flowmeter USM GT400 September, 4 2018...
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Operating mode: OFF Configuration VK Modbus according to instance F For communication via DSfG Instance-F, VK Modbus Master USM must be parameterized according to the DSfG Instance-F specification as shown in the following figure. September, 4 2018 Ultrasonic Flowmeter USM GT400...
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Configuration oof Mobus Master USM due to Instanz-F The Modbus address in VK52 must be assigned with the address of the USM GT400 are the same. They can be found in J-31. Selection values in VK58 and VK59 are irrelevant because these data types are not included in the instance protocol.
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Byte order. It will not be treated here, in case it is required you may have a look into the German manual of the USM GT400. Modbus Registers for Device-F The Modbus registers for device-F can be found in chapter 18 the Appendix with the List of parameters.
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- could be taken into account. If one of ten measurements within a measurement cycle for a path is wrong (i.e. 9 valid measurements) the DSP provides 90% valid mea- surements and the path performance is 90%. Ultrasonic Flowmeter USM GT400 September, 4 2018...
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Modbus addresses can be seen (see below). Detailed information including hourly averages and deviations of the individual values from the mean value can be found in the September, 4 2018 Ultrasonic Flowmeter USM GT400...
Here Phoenix module FL COMSERVER UNI 485-2313452 may be used. Link: https://www.phoenixcontact.com/online/portal/de?uri=pxc-oc- itemdetail:pid=2313452&library=dede&pcck=P&tab=1 Fig. 8-32: Interface converter Ethernet to RS 485 Interface converter from USB to RS 485 (USM-GT- 400) There are 3 recommendations: 1. I-7561 U-G CR at: http://www.icpdas-europe.com Ultrasonic Flowmeter USM GT400 September, 4 2018...
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Type USB-RS485-WE-5000-BT 730-0164 (5,0 m) s 3. USB-RS485-Converter / part number: 0202047 at: http:// www.ipcas.com Fig. 8-35: Type 0202047s You may find more details of the interface converters and their product information at the given links September, 4 2018 Ultrasonic Flowmeter USM GT400...
(4") Earthing screw M6 Earthing screw M6 Earthing cable Fig. 8-36: Connect to earth - Ultrasonic gas meters DN150 (6") and DN100 (4") 1 Fasten the customers earthing to the earthing screw (A). Ultrasonic Flowmeter USM GT400 September, 4 2018...
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The transducers are metallic connected to the meter housing. You do not have to earth the transducer separately. You must en- sure that the conductive connection with the pipeline of the measuring system is established. September, 4 2018 Ultrasonic Flowmeter USM GT400...
(A and B) or without a shut-off valve (C and D). If the device is or- dered without a shut-off valve, the connection is provided with a union nut (clamping screw connection) or a female thread. Ultrasonic Flowmeter USM GT400 September, 4 2018...
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DN150 Female thread ¼" Blind plug (screwed) Fig. 8-40: Connection options of the pressure connection with female thread 1 Unscrew the blind plug (B). 2 Seal the connection in the female thread (A). September, 4 2018 Ultrasonic Flowmeter USM GT400...
US electronic 5. If you expect higher temperatures than 55 ° C, then the USM- GT-400 has to be protected under a large sun-shield (weather protection roof or similar). Ultrasonic Flowmeter USM GT400 September, 4 2018...
70% under difficult flow conditions, for example, with high flow rates. If the operating pressure is not reached, a functional check is only possible to a limited extent. In this case, contact RMG services. September, 4 2018 Ultrasonic Flowmeter USM GT400...
If one individual path has failed, then there is probably an error in the wiring or with the transducers of this path. Further information can be found at: Chapter 12, „Alarm and warning messages“ on page 151 Ultrasonic Flowmeter USM GT400 September, 4 2018...
10.3.3 Interface 2 ............132 10.4 Modbus communication in detail ....141 10.4.1 Codes supported ..........141 10.4.2 Data types ............142 10.5 List of the measurement values and parameters ............143 September, 4 2018 Ultrasonic Flowmeter USM GT400...
Under coordinate AG-32 the value for the unit m/s is converted to ft/s. All parameters and measuring values with this variable unit &v: are converted to ft/s. Ultrasonic Flowmeter USM GT400 September, 4 2018...
• Two frequency outputs for the actual flow • Two outputs for two flow directions • Alarm and warning contacts Serial protocols are: • DZU • DZU-DIAG • DZU-X • IGM and USE09 • VO • DZU-SLAVE September, 4 2018 Ultrasonic Flowmeter USM GT400...
3. J-14 mode serial 1 (extended menu: DZU slave) 4. J-23 DZU-1 Address 5. J-25 opt. ser2 mode (extended menu: DZU-Slave) 6. J-37 DZU-2 address Notice • This mode can be used only in areas where the MID is applied. Ultrasonic Flowmeter USM GT400 September, 4 2018...
In order to operate the buttons with the magnets (B), the magnet must be placed on the glass in the position with the switching point (A) of the button. September, 4 2018 Ultrasonic Flowmeter USM GT400...
• Press the button longer: continuously line by line upwards. 1 Press the buttons to select the desired line. The coordinates (column and line) of the parameter are selected. The value of the parameter is shown on the display. Ultrasonic Flowmeter USM GT400 September, 4 2018...
2 Press the button to select a value from the list. Possible value of the list: 0 /…/ 9 / - / + / . / E / _ 3 Press the button to confirm the value. The value is stored. September, 4 2018 Ultrasonic Flowmeter USM GT400...
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2 Press the button to select a value from the list. Possible value of the list: 0 /…/ 9 / - / + / . / _ / A /…/ Z 3 Press the button to confirm the value. The value is stored. Ultrasonic Flowmeter USM GT400 September, 4 2018...
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1 Press the button until the next value is marked in the display. 2 Press the button to select a value from the list. 3 Press the button to confirm the value. The value is stored. September, 4 2018 Ultrasonic Flowmeter USM GT400...
If the task is carried out by RMG service, the device does not have to be calibrated by a testing institute. The device is provided with a new official seal by RMG service.
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Opening the cover 2 Unscrew threaded pin (A) out of the housing. 3 Insert the special tools into the boreholes. 4 Release the cover with the special key. Cover Fig. 10-3: Open the cover September, 4 2018 Ultrasonic Flowmeter USM GT400...
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Screw down the cover 1 Each time you open the ultrasonic electronic you have to expect that the O-ring is damaged. Therefore, this damaged O-ring has to be replaced with a new one in general. (RMG Ultrasonic Flowmeter USM GT400 September, 4...
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Entering the code word of the ultrasonic electronics If you do not have the password for the ultrasonic electronics, request the code word from RMG Service. 1 Enter the code word for the ultrasonic electronics under coor- dinate AG-4.
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6 Activate the button with the magnet in order to confirm the desired value. When the parameter is changed, you have to move the cali- bration switch back to the closed position. Calibration switch Fig. 10-7: Close the calibration switch Ultrasonic Flowmeter USM GT400 September, 4 2018...
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To activate the Modbus Master, the mode must be set to Modbus master. Fig. 10-9: Activation as Modbus master Coordinates AW-08 and AW-09 indicate the time since of the last AGA10 calculation respectively the time of last update of the gas components. September, 4 2018 Ultrasonic Flowmeter USM GT400...
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Formula N-Pentane USM_Ob AZ-17 Formula Hexane+ USM_Ob AZ-18 Formula Hexane+ USM_Ob AZ-19 Formula Oxygen F8280 USM_Ob AZ-20 Formula Oxygen USM_Ob AZ-21 Formula Helium F8282 USM_Ob AZ-22 Formula Helium USM_Ob AZ-23 Formula Hydrogene F8284 Ultrasonic Flowmeter USM GT400 September, 4 2018...
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Formula Ethene USM_Ob AZ-48 Formula Ethene USM_Ob AZ-49 Formula Propene USM_Ob AZ-50 Formula Propene USM_Ob AZ-51 Formula Status u1038==0 USM_Ob AZ-52 Formula Status USM_Ob AZ-53 Formula Status USM_Ob AZ-54 Formula Status USM_Ob AZ-55 MB_Pause September, 4 2018 Ultrasonic Flowmeter USM GT400...
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“Treatment of the gas data” on page 32 It might be possible that there is no input field in the USM-GT-400 for a measured gas component from the PGC, for example, Neo- Ultrasonic Flowmeter USM GT400 September, 4 2018...
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Constants It might be possible that components required from the USM-GT- 400 are not given from the PGC, for example water and hydrogen sulfide. These can be set to 0: September, 4 2018 Ultrasonic Flowmeter USM GT400...
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The number of pending alarms shows the data type of an unsigned integer (unsigned short int). The prefix is a small u. The register address is 10, therefore, the value u10 should be requested. Ultrasonic Flowmeter USM GT400 September, 4 2018...
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20 characters. If this is insufficient for the formulation of a more complex expression, there are a total of four coordinates for the status. AX-51 Formula Status (lowest significance) AX-52 Formula Status (low significance) September, 4 2018 Ultrasonic Flowmeter USM GT400...
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It increases with the value of the byte. The se- quence is read from left to right. Fig. 10-16: Significance of the coordinates AY-46 telegram counter: Here all correct PGC answers are counted. Ultrasonic Flowmeter USM GT400 September, 4 2018...
Data Lo (Reg 2000) Value = A801 carriage return line feed Value in ASCII Value in HEX 10.5 List of the measurement values and parameters The lists for parameter and measured values are in appendix 18. September, 4 2018 Ultrasonic Flowmeter USM GT400...
For safe operation, the device must be sent back to RMG every 5 to 10 years to check for leaks. In the course of a recalibration from RMG, the device will also be checked for leaks at the same time.
• Change the transducer only if you have obtained a training from RMG for this activity. • Observe the separate service instructions for changing the trans- ducer. The special tool from RMG must be used for changing the transducers. September, 4 2018...
• Have a device that is contaminated on the inside only cleaned by RMG service or by personnel that have been especially trained by RMG. Damage to the device from incorrect cleaning agent...
The device mainly comprises materials that can be disposed of as old metal. In the following we shall specify the components that may not be disposed of as old metal. September, 4 2018 Ultrasonic Flowmeter USM GT400...
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The transducer comprises titanium, plastic and heavy metals (e.g., lead in piezo crystal). The transducers must be disposed of according to the applicable national and local guidelines. In order to remove the transducers, RMG service shall inform you of the procedure. „Manufacturer“ on page I...
In this chapter, you will find out which information, alarm and warning messages can be displayed. In this chapter, you will also find out how to eliminate problems with the RMG components. Active warning messages are displayed with a + in front of the message number.
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No valid measurement, all measuring paths have failed. Timeout ADC fault temperature input temperature ADC pressure ADC fault pressure input I1 Out min/ Power outlet outside the min. / max. limits Temp.min/ Temperature outside the min. / max. limits Ultrasonic Flowmeter USM GT400 September, 4 2018...
Speed of sound from path 7 outside the min./max. limits (spare) P8 c min/max Speed of sound from path 8 outside the min./max. limits (spare) p1.1 amplitude Amplitude of the signal from sensor 1.1 too small Ultrasonic Flowmeter USM GT400 September, 4 2018...
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Deviation from the speed of sound in path 8 from the average speed of sound too large (spare) p1 AGC delta Deviation from the amplification factor in path 1 from the average amplification factor too large September, 4 2018 Ultrasonic Flowmeter USM GT400...
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Deviation from the amplification factor in path 7 from the average amplification factor too large (spare) p8 AGC delta Deviation from the amplification factor in path 8 from the average amplification factor too large (spare) Ultrasonic Flowmeter USM GT400 September, 4 2018...
Status of the SoS calculation 12.4 Troubleshooting If you cannot find a solution to your problem with the RMG com- ponent in the table below, then please contact the RMG service. „Manufacturer“ on page I If problems cannot be eliminated, please contact RMG service.
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Thus, one has the option to already identify conspicu- 170-175 ous paths when the limit values relevant for the calibration have not been violated for the validity of the measurement yet. Possible causes are identical with those described in 100 -125. Ultrasonic Flowmeter USM GT400 September, 4 2018...
The components of the gases must be within the concentration limits for test gases according to EN 437:2009 or similar national standards. The national standards of other countries demand similar gas type specifications. Ultrasonic Flowmeter USM GT400 September, 4 2018...
USM (flow, pressure and temperature range) and must be free of corrosive and aggressive components, liquids and solids. In case of deviating conditions a suitable operation has to be agreed with the RMG service. 13.3 Approved measuring range according to MID Nominal diameter Measuring range...
Type plate Type plate Fig. 13-1: Position of type plate The following details can be found on the type plate: 13.4.1 Type plate ATEX / IECEx Fig. 13-2: Type plate ATEX / IECEx Ultrasonic Flowmeter USM GT400 September, 4 2018...
NEC and ATEX /IECEx. ANSI pressure stages: The flange connecting dimensions com- ply with the standard ASME B 16.5. DIN pressure stages: The flange connecting dimensions com- ply with the standard DIN EN 1092. September, 4 2018 Ultrasonic Flowmeter USM GT400...
The version NEC and version ATEX / IECEx have identical di- mensions. The table of the versions can be found on the following location: „Dimensions – Version NEC and ATEX / IECEx“ on page 167 Ultrasonic Flowmeter USM GT400 September, 4 2018...
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13 Technical specifications Fig. 13-6: DN80 Due to the different sizes of the individual components, the de- vice in DN80 is shown separately. Ultrasonic Flowmeter USM GT400 September, 4 2018...
The given values are for pressure level ANSI 600, respectively ANSI900 (specified). Maximum diameter at the flange, depending on tapering. Approximate dimension. Approximate values. Weights can vary due to casting tolerances. An angle of 7° is used for tapering. September, 4 2018 Ultrasonic Flowmeter USM GT400...
13 Technical specifications 13.6 Inner diameter of connecting spool pieces Connection diameter at tapering of the USM GT400 (= inner diameter for inlet and outlet spool pieces) Maximum deviation from meter to piping: +/- 1% acc. MID / AGA 9 For calibrated spool pieces belonging to the measuring instru- ment, the deviation may be up to +/- 3%.
In this chapter you will receive information at which location the official seals are attached to the device. The device must not be used for a calibrated operation if the offi- cial seal is broken. September, 4 2018 Ultrasonic Flowmeter USM GT400...
13 Technical specifications 13.7.1 Type plate Official seal Fig. 13-7: Position of the official seal on the type plate Ultrasonic Flowmeter USM GT400 September, 4 2018...
13 Technical specifications 13.7.2 Ultrasonic electronics Official seal diagram according to ATEX / IECEx Fig. 13-8: Representation of the device with DN 150 (6") September, 4 2018 Ultrasonic Flowmeter USM GT400...
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13 Technical specifications Official seal diagram according to NEC Fig. 13-9: Representation of the device with DN 150 (6") Ultrasonic Flowmeter USM GT400 September, 4 2018...
14 USM GT400 Approval USM GT400 Approval In this section, you will receive information in which fields of ap- plication the device is approved. The standards, guidelines and regulations are also listed which are applied for the development and manufacturing.
14 USM GT400 Approval 14.5 Standards, directives and guidelines We, RMG Messtechnik GmbH, herewith declare that due to its design and construction in the version brought onto the market the devices described in this operating instruction conforms to the relevant fundamental health and safety requirements of the applicable EC Directive.
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14 USM GT400 Approval USA Directives ASME B31.3 Pressure safety Ed. 2012 AGA report no. 9 Measurement of Gas by Multipath Ultrasonic Meters. AGA report no. 10 Speed of Sound in Natural Gas and Other Related Hydrocarbon Gases. Canada-Guideline PS-G-06...
Connect to earth Check Connecting Damage Damage Official seal Decommissioning Tightness Disposal Euro pallet Clamping screw connection Inlet piping Cleaning Installation Device Main components Risks Maintenance Safety instructions Measuring values Connecting flanges Official seal September, 4 2018 Ultrasonic Flowmeter USM GT400...
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Protective sticker Connection box Flanges Connection box ATEX ANSI Connection box NEC 500 Dimensions Connection boxIECEx Protective sticker Face to Face Flow Flow computer Flow computer Piping Cable length Possibilities Connection example Pressure port Ultrasonic Flowmeter USM GT400 September, 4 2018...
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Units (variable) Change Messages Column Alarm message Input protection Status Line Warning signal Tables Meter factor Units (variable) Meter parameter Path Change Path angle to the pipe Column Path length Input protection Performance data September, 4 2018 Ultrasonic Flowmeter USM GT400...
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Gaskomp. Mod- RMGBus Installation Messages Maintenance Temperature sensor Operation Temperature stratification Operation in potentially explosive envi- Tension straps ronment Transport Repairs Terminal assignment Start Up Connection box Transport Maximum assignment RMGViewUSM RMGViewUSM Terminal assignment Tightness Ultrasonic Flowmeter USM GT400 September, 4 2018...
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NEC (CSA / FM) ATEX Weighting factor IECEx Types Connection box Data Nuts Pressure port Screws Seals Transducer Ultrasonic electronics Battery Buttons Changing Close Display Disposal Enclosure Lead seal Light emitting diodes Opening September, 4 2018 Ultrasonic Flowmeter USM GT400...
16 USM GT400 Glossary USM GT400 Glossary Transducer In this chapter you will be given information on terminology. The transducer or sensor is built into the device. The transducer sends the opposing transducer an Ultrasonic gas meter (USM) ultrasonic signal. Using the time measured for the ultrasonic signal to travel the distance between the The gas flows through the ultrasonic gas meter.
17 USM GT400 Attachment USM GT400 Attachment You will find the declaration of conformity and approvals of the device in this section. September, 4 2018 Ultrasonic Flowmeter USM GT400...
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Subject to technical modification. For further information please visit our website: www.rmg.com or contact your local sales support office to learn more about the RMG products. RMG Messtechnik GmbH Otto-Hahn-Strasse 5 35510 Butzbach, Deutschland Phone: +49 6033 897-0 Fax: +49 6033 897-130 E-Mail: service@rmg.com...
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