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 Description SIERRR' www.sierrainstruments.com ierra Instruments' BoilerTrak™ Immersible Thermal Mass Flow Meter provides an optimized solution for natural gas or propane flow measurement applications. BoilerTrak 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 a 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 x 12 backlit LCD panel. 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 Interface™ Windows™ based software (supplied with the meter) or three push buttons in the device. Optimized natural and propane measurement for 1,2, 3, 4 inch sch. 40 pipe sizes. Windows is a registered trademarks of Microsoft.

Gases Natural gas, Propane, Methane Gas Pressure 0 psig to 120 psig (0 to 8 barg) Note: actual gas calibration limited to 30 psig (2 barg) Pressure Drop Negligible Gas & Ambient Temperature Gas . . . .-40°F to 176°F (-40°C to 80°C) Note: actual gas calibration limited to 50°F to 100°F (10°C to 38°C) Ambient . . . -40°F to 120°F (-40°C to 50°C) Power Requirements 15 to 18 VDC (regulated), 625 mA draw maximum Note: BoilerTrak is not available in other power configurations due to safety concerns Accuracy of Point Velocity +/- 1% of full scale (actual gas calibration) +/- 1% of full scale +/- 3%...

BoilerTrak™ Insertion Mass Flow Meter optimized for natural gas and propane. 15-18 VDC input power with a 3/8-inch in diameter probe. Includes "Smart Electronics" with PC configuration software, calibrated temperatures up to 100F and pressures up to 30 psig (2.1 barg) real gas calibration and 120 psig (8.3 barg) correlation. 200 msec response. CE approved. 4-20 mA and 0-5 VDC linear output. NOTE: ALL slpm flow ranges also available in nlpm. Option 3: Power Supplies 900-T1 Power Supply, 15 VDC (for BoilerTrak only)

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