Skip to the beginning of the images gallery

Series TVA All Fluoropolymer Flowmeters

Series MM Mini-Master® Flowmeter

Series DR Direct Reading Glass Flowmeters

65 mm and 150 mm, Interchangeable Flowtubes, Direct Reading Scales

The Series DR Direct Read Variable Area Glass Flowmeters are ideal for the direct flow measurement of air, water, and other commonly used gases. These flowmeters are designed with direct read scales with no need for correlation charts. They feature borosilicate glass tubes in 150 mm or 65 mm scales with aluminum and SS metering valve options.

Flowmeters are shipped completely assembled and include standard panel mounting hardware for quick installation.

Calibration Options are available in the Accessory tab.

Product Applications

Gas or liquid metering
Paper manufacturing
Chemical processing
Semiconductor systems
Water and air pollution analysis systems
Laboratory systems

Starting at $335.35

Ordering

Filter By

Aluminum 150 MM Scale with Valve

Aluminum 150 MM Scale without Valve

Aluminum 65 MM Scale with Valve

Aluminum 65 MM Scale without Valve

SS 150 MM Scale with Valve

SS 150 MM Scale without Valve

SS 65 MM Scale with Valve

SS 65 MM Scale without Valve

Grouped product items
Model	Description	Availability*	Price
DR104102	Direct reading glass flowmeter, 316 SS float, flow rate 100 SCFH air.	5-6 Weeks*	$398.45
DR200232	Direct reading glass flowmeter, 316 SS float, flow rate 10 SCFH air.	5-6 Weeks*	$506.10
DR220232	Direct reading glass flowmeter, 316 SS float, flow rate 10 SCFH air.	5-6 Weeks*	$853.85
DR104200	Direct reading glass flowmeter, glass float, flow rate 10 GPH water.	1-3 days*	$398.45
DR10490	Direct reading glass flowmeter, glass float, flow rate 55 SCFH air.	5-6 Weeks*	$398.45
DR204132	Direct reading glass flowmeter, 316 SS float, flow rate 2 SCFH air.	5-6 Weeks*	$556.85
DR224332	Direct reading glass flowmeter, 316 SS float, flow rate 35 SCFH air.	5-6 Weeks*	$905.60
DR12090	Direct reading glass flowmeter, glass float, flow rate 55 SCFH air.	5-6 Weeks*	$692.40

Specifications

Service:: Compatible gases or liquids.
Wetted Materials:: Flowtube: Borosilicate glass; Float: 316 SS (black glass as indicated); Float stops: PTFE; End fittings: Anodized aluminum or 316 SS; O-rings: Buna-N on aluminum models and fluoroelastomer on SS models.
Temperature Limits:: 250°F (121°C).
Pressure Limits:: 250 psig (17 bar).
Accuracy:: ±5% FS @ 70°F (21.1°C) and 14.7 psia (1 atm absolute).
Repeatability:: ±0.25% of scale reading.
Scales:: Direct reading 65 mm or 150 mm scales for air or water.
Turn-down ratio:: 10:1.
Connection:: 1/8" female NPT.
Mounting:: Vertical.
Valve:: 6-turn needle (standard on models with valve).

Features

Permanently fused ceramic scale with vertical locator line, reflective lens background and 1.5 X magnification lens reduces parallax and eye fatigue saving time
Long operating life with thick polycarbonate front shield that protects tube from breakage and serves as a magnifying lens to enhance reading resolution
Optional needle valve for flow rate control eliminating the need for a separate valve reducing cost
Increased protection with included safety blow-out back panel for added safety

Support Library

Product Literature

Manuals

Instruction Manual

Catalog Pages

Series DR Catalog Page

Drawings

FAQ

Questions

Question

I am looking to use an "Air" flowmeter RMA-6-SSV to monitor CO2 flow. I am wondering if there are are any concerns or correction factors I need to apply.

Answer

A specific gravity correction factor will need to be considered when monitoring other gases with a meter calibrated for air. The correction factor equation is as follows: Q2=Q1 x sqrt (1/S.G.) Where: Q1= Observed Flowmeter reading Q2= Standard Flow Corrected for Specific Gravity 1= Specific Gravity of Air or Water S.G.= Specific Gravity of media being used in flowmeter originally calibrated for air or water.
This equation can be found in the beginning of the Flow section in the catalog. Alternatively, special ranges and scales can be provided; for specific information please contact our customer service department.
For further information, see our "Tech & Specs" Video Blog: Fix your Flow... Specific Gravity and Pressure Corrections for Variable Area Flowmeters (Episode 4), in Dwyer's Video Library.

Related

Series DR

Series RM

Series VF

Series LFM

Series VFC/VFCII

Series VA

Question

Will a DR4244 show an accurate measurement of flow with Methane or is there a converstion We need to use?

Answer

The scale on the DR direct reading flow meters is in millimeters. Therefore, they will come with a conversion chart to convert from millimeters to flow rate for air and water. You will then need to correct that chart to be used for Methane by correcting for the difference in specific gravity. These flow meters can be used to accurately measure the flow of Methane though.

Related

Series DR

Series DR4

Reviews

Write Your Own Review

Only registered users can write reviews. Please Sign in or create an account

Accessories

Model	Description	Availability*	Price
NISTCAL-FL1	NIST traceable calibration certificate for variable area flowmeters (air). NOTE: EQUAL CERTS WILL BE CHARGED PER UNITS PURCHASED.	Less Than 1 Week*	$352.00
NISTCAL-FL2	NIST traceable calibration certificate for variable area flowmeters (water). NOTE: EQUAL CERTS WILL BE CHARGED PER UNITS PURCHASED.	Less Than 1 Week*	$292.00