In addition to the insertion-style flow meters, Sage offers inline or in-line thermal mass flow meters in ¼” through 4”, and here are some installation considerations.

In-line Flowmeters

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Sage Metering offers inline flow meter mounting styles for 1/4″ through 4″ pipe (threaded male NPT ends are standard up to 2-1/2” and ANSI 150 lb. flanged ends are recommended for the 3” and 4” models). If other mounting styles are required, contact Sage. For pipe sizes greater than 4” use the insertion-style flow meter.

The assembly section of the inline flow meter should match the size and pipe material of the conduit. The meter is plumbed directly in the flow line by threading, flanging, or welding. The user should not apply reducers with an inline flow meter. The meter has a sensing element (a self-heated flow sensor and a temperature/reference sensor) mounted in the flow section where gas will flow. The meter also contains a sensor drive circuit, microprocessor meter board, and transmitter enclosure.

Flow Conditioning Chart
Obstructions such as valves, blowers, expanders, and PVC and HDPE pipes require additional straight run.

All Sage inline flow meters, 1/2″ and up, have built-in flow conditioners. The ¼” and 3/8” models do not have flow conditioners. For this reason, the inline flow meter of these sizes will require an additional straight run. Refer to the chart here for upstream straight run requirements.

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Other topics from the Sage Prime Manual you many be interested in are:

How do I clean my thermal mass flow meter sensor?

My Sage flow meter was damaged in shipment.

Optional Mounting Hardware for the Insertion Flow Meter

How to Install and Mount my Sage Prime Thermal Mass Flow Meter?

Common Diagnostics for Sage Prime Mass Flow Meters

Flow Profile and Installation Considerations for Insertion Flow Meters

Sage In-Situ Verification Procedure

Sage Mass Flow Meters Warranty

Sage Prime Thermal Mass Flow Meter Features and Benefits

Modbus Protocol and Function Codes

Returning Your Sage Flowmeter via Special Delivery

Sage Metering’s Cancellation and Return Policy

HART Protocol and Access Keys

Correction Factors for Biogas Variation From Original Calibration