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Immersible Gas Flow Meter
NATURAL GAS & PROPANE IMMERSIBLE THERMAL GAS MASS FLOW METER
Features
- Fast response flow meter optimized for natural gas or propane measurement applications
- 200 millisecond response to changes in flow rate
- Programmable pulse output for remote totalization
- Optional Modbus communication
- Smart electronics permit field adjustment of critical flow meter settings
- Field validation of flow meter calibration
- Outstanding rangeability
- 2 x 12 backlit LCD display totalizer values along with instantaneous flow display
- Minimal flow blockage and low pressure drop
- CE approved
Sierra Instruments' Boiler-TrakTM Immersible Thermal Mass Flow Meter provides an optimized solution for natural gas or propane flow measurement applications. Boiler-Trak is designed to provide an economical solution to new regulations for the burning of natural gas or propane in heaters and boilers. The meter's sensor offers long-term reliability and a 200 millisecond response to changes in flow rate.
The versatile microprocessor-based transmitter integrates the functions of flow-range adjustment, meter validation and diagnostics in probe-mounted NEMA 4X (IP65) housing. Mass flow rate and totalized flow, as well as other configuration variables, are displayed on the meter's 2 x12backlitLCDpanel.
The meter also provides an optical/galvanic isolated 4-20 mA output and two alarm outputs along with a programmable pulse output for remote totalization. An optional Modbus Communications package is also available. The programmable transmitter is easily configured via RS-232 and Sierra's Smart InterfaceTM WindowsTM based software (supplied with the meter) or three pushbuttons in the device. Boiler-Trak is suitable for pipes or ducts from 1-inch to 6-inches.
Dimensional Specifications
| (L) DIMENSIONS | |
| CODE | L |
| L04 | 4.0 (101.6) |
| L06 | 6.0 (152.4) |
| L09 | 9.0 (228.6) |
| L13 | 13.0 (330.2) |
Dimensional Specifications
Wetted Material
Probe 316SS
Sensor 304SS, glass coating epoxy
Enclosure
NEMA 4X (IP65) powder-coated cast aluminum
Electrical Connections
One 1⁄2-inch female NPT
Mounting
3⁄8-inch tube compression fitting with 1⁄2-inch male NPT
Certifications
CE approved
Performance Specification
Accuracy of Point Velocity
- +/- 1% of full scale (actual gas calibration)
- +/- 1% of full scale +/- 3% of reading (correlation)
Repeatability
- +/- 0.2% of full scale
Temperature Coefficient
- +/- 0.02% of reading per °F within +/- 50°F of customer specified conditions
- +/- 0.03% of reading per °F within +/- 50°F to 100°F of customer specified conditions
- +/- 0.04% of reading per °C within +/- 25°C of customer specified conditions
- +/- 0.06% of reading per °C within +/- 25°C to 50°C of customer specified conditions
Pressure Coefficient
- .02% per 7 kpa for natural gas / Methane / Propane
Reponse Time
- 200 milliseconds to 63% of final velocity value
Standard Calibrated Flow Rates
|
IN VARIOUS SIZES OF SCHEDULE 40 PIPING - STP = 70°F, 1ATM (21°C, 101.3 KPA) |
|
| 1.25" | 80 SCFM (2.1 NM3/min) |
| 1.5" |
110 SCFM (2.9 NM3/min) |
| 2" | 185 SCFM (4.9 NM3/min) |
| 2.5" | 265 SCFM (7.0 NM3/min) |
| 3" | 410 SCFM (10.8 NM3/min) |
| 4" | 705 SCFM (18.5 NM3/min) |
| 6" | 1600 SCFM (42.1 NM3/min) |
