Compressed Air and Nitrogen (N2) Flow Meter CFM Sage Metering Model 51 Thermal Mass Insertion
Sage Metering - Thermal Mass Compressed Air Flow Meter
Revolutionize Your Compressed Air, and Nitrogen Metering
Introducing the Sage 51 Natural Gas Series Meter– the ultimate flow meter for precise natural gas and air flow measurement in commercial and institutional buildings. Whether you’re managing a sprawling university campus, a busy hospital, or a complex office building, our thermal mass flow meter delivers unparalleled accuracy and efficiency.
This meter is an insertion thermal mass compressed air meter. As this meter is an insertion meter, this single meter can fit a variety of pipe sizes. Pipe sizes can range from 2" to 20" pipe sizes
Flow Meter Key Features:
Direct Mass Flow Measurement: No additional temperature or pressure transmitters required
High Accuracy: Within 1% of actual value, NIST calibrated with natural gas or air
Impressive Turndown: 100:1 ratio with resolution up to 1000:1
Low-End Sensitivity: Measures as low as 5 SFPM
Negligible Pressure Drop: Maintains energy efficiency
No Moving Parts: Ensures long-term reliability and accuracy
Perfect for HVAC Applications:
Inline or insertion-style options
Available with flow conditioner (minimizes pipe run requirements)
Easy installation and maintenance
High rangeability for both low- and high-flow scenarios
Facilitates LEED credits
Compact design (4-1/8″ dia. x 4-1/4″ deep)
CI D2 hazardous location rating
Advanced Communication:
BACnet communication standard (Modbus RTU optional)
Isolated 4-20 mA output for flow rate
Pulsed output for totalized flow
Optional dry contact relay module
Ideal for:
Mechanical contractors
Performance contractors
Campuses and universities
Energy service companies (ESCOs)
With the Emergent Metering natural gas meter, you can maximize your boiler system’s efficiency and reduce energy consumption. Experience the power of precise natural gas monitoring today!
Sage Model 51 HVAC Series | Natural Gas Thermal Mass Flow Meter
Sage Model 51 HVAC Series thermal mass flow meter for natural gas: ±1% of reading, 100:1 turndown, 24 VDC, OLED display, isolated 4–20 mA, pulse total, BACnet or Modbus RTU.
- College and university campuses
- Government facilities
- Hospitals
- Shopping centers
- Office buildings and complexes
- 4–20 mA analog output proportional to natural gas flow rate
- Pulsed outputs for totalized flow
- Local display showing:
- Flow rate
- Totalized flow
- Temperature
- It also includes BACnet communications as standard, with optional Modbus RTU for integration with energy dashboards and other master systems.
- Direct mass flow measurement
- No need for separate temperature or pressure transmitters
- High accuracy and repeatability
- Turndown ratio of 100:1
- Resolution up to 1000:1
- Low-end sensitivity
- Measures as low as 5 SFPM
- Example: 7 SCFH in a 2” pipe
- Negligible pressure drop
- Will not impede flow or waste energy
- No moving parts
- Eliminates costly bearing replacements
- Prevents undetected accuracy shifts
- Mass flow measurement for natural gas
- In-line or insertion meter options
- Easy installation
- High rangeability for both low and high flows
- High reliability
- Supports energy consumption reduction efforts
- Can help facilitate LEED credits
- 4-1/8” diameter x 4-1/4” deep
- BACnet communications (standard) or optional Modbus RTU
- Isolated 4–20 mA output for flow rate
- Pulsed output for totalized flow
- Rugged, user-friendly packaging
- Easy terminal access
- Built-in flow conditioning for in-line meters (½” and up)
- Optional dry contact relay module (DCR-DC)
- Standard performance specifications include:
- Accuracy: ±1% of reading
- Repeatability: 0.2%
- Turndown: 100:1
- Resolution: up to 1000:1
- For natural gas meters:
- 1% of reading applies above 500 SFPM (velocity units)
- The electronics include:
- 4–20 mA output proportional to mass flow rate
- Pulsed outputs for totalized flow
- BACnet communications (standard)
- Optional Modbus communications
- The Model 51 HVAC Series includes:
- Bright, high contrast, photo-emissive OLED display
- 24 VDC
- Power dissipation under 2.5 watts
- (Example: under 100 mA at 24 VDC)
- Select the pipe size
- Choose SCFM units
- Meter is pre-configured for the specified pipe size
- Totalized flow pulse output is pre-configured for the specified pipe size
- Sage recommends contacting them for typical flow rates for your pipe.
- CE approved
- CSA approved
- UL approved for Hazardous Service
- model-51-hvac
- Model 51 In-Line
- The in-line flow element consists of:
- 316 Stainless Steel Schedule 40 flow bodies
- ¼” x 6” long
- Up to 4” x 12” long
- The insertion flow element consists of:
- ½” OD probe
- Probe lengths up to 18”
- Typically 15” long
- Suitable for insertion into the center of a process pipe
- ¼” x 6” → 1-1/4” x 10”
- 3/8” x 6” → 1-1/2” x 12”
- ½” x 7” → 2” x 12”
- ¾” x 7” → 2-1/2” x 12”
- 1” x 8” → 3” x 12”
- 4” x 12”
- Mechanical contractors
- Performance contractors
- Campuses and universities
- Energy service companies (ESCOs)