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Economical Flowmeters
Model PM-1000 Series (37mm)

Description

The PM-1000 Series acrylic flowmeters are a practical, low-cost approach to low flow rate indication of gases. A broad range of industrial applications involving non-corrosive fluids, normal atmospheres and less stringent accuracy demands are within the scope of this simplified, plain tapered tube design. State-of-the-art manufacturing techniques assure each meter meets the performance demands of these applications.

The PM-1000 Series are direct reading for air, and are available in either English or metric units. Choose between a black glass or stainless steel float.

Complete annealing during production ensures each meter body is stress free. No plastic threading is used, eliminating crazing and fracture of the acrylic. An extruded aluminum support frame for the meter body absorbs all connection strain. Support frame flanges and lock nuts provide for a variety of panel mounting arrangements. The simplified design of this meter allows quick, easy maintenance. High impact strength of the acrylic meter block completes this dependable design.

Design Features
  • Aluminum frame absorbs connections strain
  • Reduced scale parallax
  • Full 37mm scale length
  • Low end flow measurement of 0.2 SCFH
  • 10 to 1 or greater meter range
  • Low pressure drop
  • Meter support frame flanges allow variety of panel mounting positions
  • Control valve available installed at inlet or outlet

Specifications

Pressure Rating: 100 psig maximum operating pressure
Temperature Rating: 160ºF maximum operating temperature
Accuracy: ±10% of full scale flow rate
Repeatability: 1% of scale reading
Range: 10 to 1 or greater, i.e., 100% to 10% of full scale
Scale Readings: Direct reading air. Special other direct reading scales available
Shipping Weight: 1 lb

Materials of Construction

Wetted End Plugs and Valve Parts: Aluminum, brass, or 316 stainless steel
Valve Stem 316 Stainless steel
Seal Materials: Buna-N Teflon,® EPR, Kalrez® or Viton®
Meter Block: Clear, cast acrylic plastic with plain tapered bore; extruded aluminum support frame
Piping Connections: Aluminum, brass, or 316 stainless steel 1/8" female NPT horizontal on inlet and outlet
Float Materials: Black glass or 316 stainless steel
Scale: Permanently screened on meter body, length 37mm

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Flow Tube Capacities for PM-1000 Series Flowmeters, 37mm, Direct Reading

English Scale Metric Scale Float Material
Tube No. Air (SCFH)* Tube No. Water (GPH) Tube No. Air (SLPM)* Tube No. Water (CCM)
N203 0.2-2.6 N207 0.05-0.4 N201 0.1-1.2 N205 2-24 Glass
N204 0.5-5 N208 0.1-1 N202 0.2-2.4 N206 5-60 Stainless Steel
P403 1-14 P407 0.2-2.2 P401 0.5-6 P405 10-140 Glass
P404 2-26 P408 0.5-5 P402 1-12 P406 20-320 Stainless Steel
Q603 5-60 Q607 1-12 Q601 2.5-30 Q605 50-800 Glass
Q604 20-120 Q608 2-24 Q602 10-55 Q606 100-1500 Stainless Steel
*All air flow rates are at 70ºF and 14.7 psia

Ordering Information
Model Series Number of
Metering Tubes
End Blocks/
Seal Material
Valve Types Connections Accessories Connection Orientation Flow Tube
(Capactities)
 
 

Model Number Generator for PM-1000 Series Flowmeters

MODEL SERIES VALVE TYPES ACCESSORIES
N = Model PM-1000 Plastic Flowmeter with NXXX Flow Tube Capacity E = Valve on Inlet 0 = None
P = Model PM-1000 Plastic Flowmeter with PXXX Flow Tube Capacity F = Valve on Outlet 1 = Bezel & Bracket --- Clear Anodized Aluminum
Q = Model PM-1000 Plastic Flowmeter with QXXX Flow Tube Capacity G = Valve Plug on Inlet 2 = Brackets Only
NUMBER OF METERING TUBES H = Valve Plug on Outlet 5 = Base Plate Assembly
1 = Single Tube Unit Y = No Valve/No Plug 7 = Bezel & Bracket --- Black Anodized Aluminum
2 = Two Tube Unit CONNECTIONS 9 = Clean for Oxygen Service
3 = Three Tube Unit 1 = 1/8"NPT Female CONNECTION ORIENTATION
4 = Four Tube Unit 6 = 1/4"Hose (3/16"-3/8"Hose Tapered) 1 = Back In and Back Out
END BLOCKS/SEAL MATERIAL D = 1/8"NPT Inlet & 1/4"Hose Outlet
1 = Aluminum with Buna-N Seals FLOW TUBE (CAPACITIES)
3 = Chrome Plated Brass with Buna-N Seals XXXX = See Capacity Table For PM-1000 Series Flowmeters
4 = 316 Stainless Steel with Viton®Seals
6 = 316 Stainless Steel with Teflon®Seals
A = Aluminum with Viton Seals
B = Chrome Plated Brass with Viton Seals
D = 316 Stainless Steel with Buna-N Seals
E = 316 Stainless Steel with EPR Seals
M = Aluminum with Buna-N Seals and Brass Adapters
N = 316 Stainless Steel with Kalrez®Seals

 

Model PM-1000 Series (37mm) Flowmeter Dimensions