GPL - Model 100 -Thermal Mass Flow Meter
We recommend the GPL 100 thermal mass flow meter for all GPL 750 odorization systems. Given that the the odorant injection rate of the odorizer is proportional to the gas flow rate of the pipeline, a flow meter with excellent low-flow sensitivity and high rangeability assures accurate, optimal and repeatable odorization with low-flow and intermittent-flow systems.
The meter is approved for use in Class I, Division 2 hazardous areas and is CE approved. The GPL 100 is available with 24 VDC input power. The power dissipation is among the lowest in the industry at less than 2.5 watts. The thermal mass flow meter offers both a 4-20 mA signal and, pulse output of total flow. Also, Modbus RTU with RS-485 communication is optional providing both daisy chain communication and the capacity to reconfigure the operating considerations of the device.
The thermal mass flow meter can function with either the ½" insertion probe in 1" and larger pipe, or the inline flow body with ¼" to 4" pipe. Various connections are available for inserting the probe into the pipe. The meter is calibrated by an NIST traceable calibration facility preconfigured with the specified process and installation parameters for the application. The GPL 100 has a dual compartment housing with separate wiring sections featuring large, easy-to-access terminals for simple field installation.
Performance
- Accuracy: +/– 1% of reading plus 0.5% of full scale
- Repeatability: 0.2% of reading
- Low-end sensitivity: 5 SFPM (1 SCFM in 6" pipe)
- Response time: 1 second constant
- Turndown: 100:1
- Resolution: 1000:
Electronics
- Power: 24 +/-10% VDC
- Output : 4-20 mA
- Pulse: Solid-state
- Isolated: Externally powered 4-20 mA and pulse
- Modbus: RS 485 RTU optional 1
- Approvals: Class I, Division 2, NEMA 4, CE
- Ambient temperature: –40 to 150° F (–40 to 65° C)
Sensor
- Type: Insertion probe (1/2" diameter)
- Flow Body with flow conditioning (1/4" to 4")
- Materials: 316 stainless steel and Hastelloy C
- Process temperature range: –40 to 200°F (–40 to 93° C)
- Process pressure: Max 500 psig