| Customization: | Available |
|---|---|
| Accuracy: | >±1% |
| Main Application: | Nature Gas |
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1. Applications:
The TBQSe Quantometer is a turbine meter for operational natural gas volume measurement and for other non-aggressive gases such as propane, butane, air, carbon dioxide or inert gases used in interna and controlling processes of various types, especially in industrial therma processing facilities.
2. Features:
3. Operation Principle:
The TBQSe Quantometer is a turbine gas meter that registers the operating volume using a nine-digit electronic index. The flow of the gas to be measured causes the turbine rotor to rotate. The gas flow is narrowed on an annular cross section, is accelerated and directed onto the smooth-running aluminum rotor, The number of rotations is proportional to the measured gas volume: the
frequency of rotations is proportional to the actual gas flow.
The rotation of the rotor is transmitted via a magnetoresistance sensor from the gas pressurized area to the electronic index which is in the atmospheric environment. The CPU is receiving the high freguency sienal for the maenetoresistance sensor to calculate the gas flow and gas volume under operating conditions. lf the optional electronic volume corrector function is installed the gas flow and gas volume under standard conditions will be calculated according AGA NX-19, The calculation can be based on fixed factors for temperature and pressure or on optionallyinstaled temperature and pressure sensors. The TBQSe is designed to have one external temperature and one external pressure transmitter installed directly in the meter.
4. Technical Parameters:
| ltems | TBQSe Quantometer | |
| Gas Temperature | -20°C to +60°C | |
| Ambient Temperature | -20°C to +60°C | |
| Storage Temperature | -30°C to +60°C | |
| Operating Pressure | 16 bar and 20 bar | |
| Protection Class | IP 67 | |
| Materials | ||
| Meter Housing | Aluminum alloy | |
| Turbine Rotor | Aluminum alloy | |
| Meter Index Head | Aluminum alloy | |
| Meter Index Head | Synthetic material (standard).optional Aluminum | |
| PED-Approval | Hpi/222-103-Q-OI | |
| ATEX-Approval | Ex-Zone 1; Ex ia mc T4 Ga | |
| Reproducibility | <0.2 % | |
| Overload | up to 1.25 Qmax | |
| Pressure Change Rate | <0.35 bar/s | |
| Electronic Index | ||
| Power supply | Lithium battery with a calculated life time under standard conditions of 5 years. alternatively external power supply as option |
|
| Display | LCD Display for flow and volume under operating and standard conditions, pressure and temperature as well as the status of the battery |
|
| Keys | 1 LF-pulser (Reed contact) and l anti-tampering contact Option:additional 1 HF-pulser |
|
| Counter | Nine-digit electronic index |
| Memory | Non-volatile 512 kB EPROM for saving the parameters and set of 1500 records |
| Electronic Volume Correction | |
| (option) | AGA NX 19 or fixed factors |
| Standard Conditions | Selectable.standard configurationis 273.150K(00C): 1013.25 mbar |
| Parameterization | PC based software (NMl) |
| Communication | |
| Pulse Output | I LF-pulser or 1 HF-pulser, Option: additionally 1 HF-pulser (at the turbine wheel) |
| Analog Output (option) | 14 to 20 mA output (only with external power supply) |
| Serial Communication | 1 RS 485 or M-Bus interface |
| Protocol | Modbus RTU. M-BuS |
| Connections | |
| Pressure | 1 connection with 1/4"NPT -thread |
| Temperature | 1 thermowell with G 1/4"-thread (option) |
5. Error Limits:
The TBQSe Quantometers are all initially calibrated within the specified measurement errors. Reduced measurement errors limits are optionally available.
The TBQSe Quantometers are manufactured with large measurement ranges due to the precision machining ofthe parts and a reproducible assembly process.
The standard calilbrated measurement range for the TBQSe is 1:20 under atmospheric conditions (exception is the DN25 with 1:10).
7. Meter Design:
1) Pressure containinghousing
2) Turbine wheel
3) Mechanical counterl index
4) Magnetic coupling
5) Inlet flow straightener
6) Measuring cartridge
7) Gear train
8. Connections:
TBQSe Quantometer housings are manufactured without flanges as a "sandwich" design to be
installed between the two inlet and outlet pipe fanges on a standard basis with raised face (RF)
fanges according to DIN/EN 1092-1 or ANSI B 16.5 for class 150 with a maximum operating
pressure of 20 bar/ 2.0 MPa. The TBQSe DN 25 M'' is designed as flange version with threaded holes or as a threaded pipe version with a thread of G1"
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