TRZ 03 / TRZ 03-K — turbine gas meters DN 50–600, PN 10–100 / ANSI 150–600
TRZ 03 and TRZ 03-K are turbine gas meters DN 50–600 with a mechanical totalizer and magnetic coupling, PN 10–100 and ANSI 150–600. TRZ 03 is designed for custody transfer metering under EN 12261 and OIML, TRZ 03-K for process metering. MID type approval T10417, turndown up to 1:20, intrinsically safe version for zone 1.
- Type
- turbine gas meter with a mechanical counter and magnetic coupling
- TRZ 03
- custody transfer metering, EN 12261 / OIML, MID T10417, PED CE0091
- TRZ 03-K
- process (non-custody) metering, turndown up to 1:16; special version up to DN 1000
- Nominal sizes
- DN 50–600
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
TRZ 03 is a turbine gas meter that the manufacturer calls the benchmark in the class of mechanical gas flow meters, distinguished by high metrological performance, robustness and durability. The meter is intended for custody transfer metering under EN 12261 and OIML and shows the volume in cubic metres at operating pressure and temperature. The gas flow is narrowed to a set cross-section and turns a coaxially mounted turbine wheel, whose rotation speed is proportional to the flow. A flow straightener in front of the measuring element removes turbulence and swirl.
The rotation is transmitted by a magnetic coupling from the pressurized housing to the unpressurized meter head, where a gear train with a selected gear pair drives the mechanical totalizer. A reed switch or inductive sensor on the totalizer outputs low-frequency pulses (up to three sensors). Inductive HF sensors scan the turbine blades (HF3, from DN 80) and the reference wheel for monitoring (HF2, from DN 100). An ENCO 08 encoder can be built in as an option for digital transmission of readings to a corrector. The rotor is made of Delrin (DN 50–200, PN 10/16) or aluminium alloy.
The nominal sizes are DN 50–600, the pressure classes PN 10–PN 100 and ANSI 150–600, and the maximum flow ranges from 100 m³/h (DN 50) to 25,000 m³/h (DN 600). The standard turndown is 1:20 under MID, and up to 1:160 when verified at high pressure. Error limits are ±1.0 % from Qmin to 0.2 Qmax and ±0.5 % from 0.2 Qmax to Qmax at pressures above 4 bar, with repeatability of ±0.1 %. Type approvals are MID T10417 and PED CE0091. The temperature under MID is −25 to +55 °C, under PED −20 to +80 °C (ductile iron) or −40 to +80 °C (cast steel).
The sensors are intrinsically safe (Ex ia IIC T6 Ga), the meter is approved for zone 1, and the head has IP65 protection. The meter is suitable for natural, refinery and liquefied gases in the gas phase, nitrogen, dry CO2, air and inert gases. Special versions exist for aggressive gases, and declarations have been issued for mixtures with up to 30 % and with 100 % hydrogen. TRZ 03-K is a simplified variant of the same design for process metering without custody transfer functions. It has DN 50–600 (up to DN 1000 by special order), PN 10–100 and ANSI 150–600, a turndown of up to 1:16, a temperature of −10 to +50 °C and explosion protection II 2G Ex ib T6/T4.
Technical specifications
| Type | turbine gas meter with a mechanical counter and magnetic coupling |
|---|---|
| TRZ 03 | custody transfer metering, EN 12261 / OIML, MID T10417, PED CE0091 |
| TRZ 03-K | process (non-custody) metering, turndown up to 1:16; special version up to DN 1000 |
| Nominal sizes | DN 50–600 |
| Pressure | PN 10–PN 100; ANSI 150–600 |
| Flow Qmax (TRZ 03) | 100 m³/h (DN 50) – 25,000 m³/h (DN 600) |
| Measuring range | 1:20 (MID); up to 1:160 when verified at high pressure |
| TRZ 03 error | ±1.0 % (Qmin–0.2 Qmax), ±0.5 % (0.2 Qmax–Qmax) at pressure >4 bar |
| Repeatability | ±0.1 % |
| Temperature | MID −25…+55 °C; PED −20…+80 °C (ductile iron), −40…+80 °C (cast steel) |
| Pulse sensors | LF — reed switch or inductive (up to 3); HF HF1, HF2, HF3 per NAMUR; ENCO 08 encoder (optional) |
| Explosion protection | Ex ia IIC T6 Ga (TRZ 03), II 2G Ex ib T6/T4 (TRZ 03-K) — zone 1 |
| Head protection | IP65 |
| Rotor | Delrin (DN 50–200, PN 10/16) or aluminium alloy |
| Hydrogen | manufacturer's declarations for mixtures with up to 30 % H2 and for 100 % H2 (TRZ 03) |
Request a price and lead time
TRZ 03 / TRZ 03-K — turbine gas meters DN 50–600, PN 10–100 / ANSI 150–600. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
What sizes and pressure classes are available for TRZ 03?
Nominal sizes DN 50–600, pressure classes PN 10–PN 100 and ANSI 150–600. The maximum flow ranges from 100 m³/h for DN 50 to 25,000 m³/h for DN 600.
What are the accuracy and measuring range of TRZ 03?
The standard turndown is 1:20 under MID, and up to 1:160 when verified at high pressure. The error is ±1.0 % from Qmin to 0.2 Qmax and ±0.5 % from 0.2 Qmax to Qmax at pressures above 4 bar, with repeatability of ±0.1 %.
How does TRZ 03-K differ from TRZ 03 and is it suitable for hydrogen?
TRZ 03-K is intended for process metering, its turndown is up to 1:16 and its explosion protection is II 2G Ex ib T6/T4. Declarations have been issued for TRZ 03 for mixtures with up to 30 % hydrogen and for 100 % hydrogen.
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