Series PI Piston In-Line Variable Area Flowmeter

No Straight Run Requirements, Mechanical Sensing, Switch and Transmitter Options

The Series PI Piston In-Line Variable Area Flowmeter is a series of mechanical piston variable area flow meters with visual and electronic output options. The Series PI is offered with inscribed scale displays via pointer or numeric digital LCD options. It offers mechanical switch output options and electronic output options such as 4-20 mA analog output, and HART® protocol. It is available in pipe sizes 1/4" to 1" (8 to 25 mm) and flows of 0.25 to 30 GPM (5 to 100 LPM) for liquids with viscosity up to 650 centistokes.

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Product Applications

  • Cooling water monitoring
  • Plastic injection molding coolant control
  • Oil and gas measurement
  • Lubricant flow control
  • Hydraulic flow
  • Pump protection
  • Hazardous areas
Grouped product items
Model Description Availability* Qty Price

Specifications

Service:
Compatible liquids.
Range:
See flow rate chart on catalog page.
Display:
Standard analog scale and pointer display with optional numeric digital LCD (model selectable).
Wetted Materials:
Flow body: Aluminum, brass or 316 SS; Piston: 316L SS; Seal: Buna-N or Viton®.
Accuracy:
±2% or ±1% FS (model selectable).
Repeatability:
1% of reading.
Temperature Limits:
200°F (93°C) or HT option 400°F (205°C); Transmitters HT 300°F (150°C); Ambient temperature: 150°F (65°C) CSA listed only to 105°F (41°C).
Pressure Limits:
Aluminum and brass: 500 psi (34.5 bar); 316 SS: 1500 psi (103.4 bar) (3:1 safety factor).
Pressure Drop:
5 psi (0.35 bar) at FS.
Response Time:
250 ms.
Power Requirements:
Standard: None; 4-20 mA analog output or HART® protocol: 10-30 VDC, 0.25 A @ 24 VDC; Intrinsically safe transmitter*: 10-24 VDC, 0.25 A @ 24 VDC.
Output:
4-20 mA (model selectable).
Deadband:
Alarm output: 2.5% FS for up to 1/2 ̋; 5% FS for larger than 1/2 ̋.
Viscosity:
650 centistokes max.
Enclosure Rating:
NEMA 12 (IP52), NEMA 4 (IP66) or NEMA 4X (IP65) (model selectable).
Process Connection:
Female NPT, SAE, BSPT, BSPP or ANSI RF flanges (model selectable).
Electrical Connection:
3/4 ̋ NPT for A, L, Z and T-box enclosures; 1/2 ̋ NPT for R-box enclosure.
Weight:
10 to 20 lb (4.5 to 9.1 kg) (model dependent).
Installation Orientation:
In-line and in any position.
Straight Pipe Run:
Zero straight pipe runs before or after, meter required.
Switch Output Compliance:
General purpose or rated for hazardous locations (all classes, groups and divisions) (model selectable).
Compliance:
CE, ETL.
*Only when used with intrinsically safe barrier.

Features

  • Zero straight pipe runs required before or after the meter
  • Standard mechanical sensor pointer and switches do not require power
  • 10:1 turndown for added measuring flexibility
  • Rugged, all metal construction
  • Multi-directional mounting

Product Literature

Manuals

Catalog Pages

Product Data Sheet

PI-XXXX-XXXXX-XXX-XXXXXX-OPT PISTON INLINE VARIABLE AREA FLOW METER

2ND SEGMENT (1ST X) HOUSING MATERIAL
          A ALUMINUM (LUBE OIL)
          B BRASS (WATER,OIL)
          Z 316 STAINLESS STEEL (CHEMICALS/CORROSIVES/OIL)

2ND SEGMENT (2ND X) INTERNAL MOVING PARTS
          Z 316L STAINLESS STEEL

2ND SEGMENT (3RD X) SEAL MATERIAL
          B BUNA N
          F VITON

2ND SEGMENT (4TH X) MAXIMUM FLOW RATE
          0.25GM 0.25 GALLONS PER MINUTE
          0.5GM 0.5 GALLONS PER MINUTE
          0.75GM 0.75 GALLONS PER MINUTE
          1GM 1 GALLONS PER MINUTE
          1.5GM 1.5 GALLONS PER MINUTE
          2GM 2 GALLONS PER MINUTE
          2.5GM 2.5 GALLONS PER MINUTE
          3GM 3 GALLONS PER MINUTE
          4GM 4 GALLONS PER MINUTE
          5GM 5 GALLONS PER MINUTE
          6GM 6 GALLONS PER MINUTE
          7GM 7 GALLONS PER MINUTE
          8GM 8 GALLONS PER MINUTE
          9GM 9 GALLONS PER MINUTE
          10GM 10 GALLONS PER MINUTE
          15GM 15 GALLONS PER MINUTE
          20GM 20 GALLONS PER MINUTE
          30GM 30 GALLONS PER MINUTE
          5GH 5 GALLONS PER HOUR
          10GH 10 GALLONS PER HOUR
          15GH 15 GALLONS PER HOUR
          20GH 20 GALLONS PER HOUR
          25GH 25 GALLONS PER HOUR
          30GH 30 GALLONS PER HOUR
          40GH 40 GALLONS PER HOUR
          50GH 50 GALLONS PER HOUR
          60GH 60 GALLONS PER HOUR
          75GH 75 GALLONS PER HOUR
          80GH 80 GALLONS PER HOUR
          90GH 90 GALLONS PER HOUR
          100GH 100 GALLONS PER HOUR
          120GH 120 GALLONS PER HOUR
          150GH 150 GALLONS PER HOUR
          200GH 200 GALLONS PER HOUR
          250GH 250 GALLONS PER HOUR
          300GH 300 GALLONS PER HOUR
          5LM 1 LITERS PER MINUTE
          10LM 10 LITERS PER MINUTE
          15LM 15 LITERS PER MINUTE
          20LM 20 LITERS PER MINUTE
          25LM 25 LITERS PER MINUTE
          30LM 30 LITERS PER MINUTE
          35LM 35 LITERS PER MINUTE
          40LM 40 LITERS PER MINUTE
          50LM 50 LITERS PER MINUTE
          60LM 60 LITERS PER MINUTE
          70LM 70 LITERS PER MINUTE
          75LM 75 LITERS PER MINUTE
          80LM 80 LITERS PER MINUTE
          90LM 90 LITERS PER MINUTE
          100LM 100 LITERS PER MINUTE
          20LH 20 LITERS PER HOUR
          30LH 30 LITERS PER HOUR
          40LH 40 LITERS PER HOUR
          50LH 50 LITERS PER HOUR
          60LH 60 LITERS PER HOUR
          70LH 70 LITERS PER HOUR
          80LH 80 LITERS PER HOUR
          90LH 90 LITERS PER HOUR
          100LH 100 LITERS PER HOUR
          200LH 200 LITERS PER HOUR
          300LH 300 LITERS PER HOUR
          400LH 400 LITERS PER HOUR
          500LH 500 LITERS PER HOUR
          600LH 600 LITERS PER HOUR
          700LH 700 LITERS PER HOUR
          800LH 800 LITERS PER HOUR
          900LH 900 LITERS PER HOUR
          1000LH 1000 LITERS PER HOUR
          1CMH 1 CUBIC METERS PER HOUR
          2CMH 2 CUBIC METERS PER HOUR
          3CMH 3 CUBIC METERS PER HOUR
          4CMH 4 CUBIC METERS PER HOUR
          5CMH 5 CUBIC METERS PER HOUR
          6CMH 6 CUBIC METERS PER HOUR
          0.25GLM 0.25 GM DUAL GALLONS/LITERS PER MINUTE
          0.5GLM 0.5GM DUAL GALLONS/LITERS PER MINUTE
          0.75GLM 0.75GM DUAL GALLONS/LITERS PER MINUTE
          1GLM 1GM DUAL GALLONS/LITERS PER MINUTE
          1.5GLM 1.5GM DUAL GALLONS/LITERS PER MINUTE
          2GLM 2GM DUAL GALLONS/LITERS PER MINUTE
          2.5GLM 2.5GM DUAL GALLONS/LITERS PER MINUTE
          3GLM 3GM DUAL GALLONS/LITERS PER MINUTE
          4GLM 4GM DUAL GALLONS/LITERS PER MINUTE
          5GLM 5GM DUAL GALLONS/LITERS PER MINUTE
          6GLM 6GM DUAL GALLONS/LITERS PER MINUTE
          7GLM 7GM DUAL GALLONS/LITERS PER MINUTE
          8GLM 8GM DUAL GALLONS/LITERS PER MINUTE
          9GLM 9GM DUAL GALLONS/LITERS PER MINUTE
          10GLM 10GM DUAL GALLONS/LITERS PER MINUTE
          15GLM 15GM DUAL GALLONS/LITERS PER MINUTE
          20GLM 20GM DUAL GALLONS/LITERS PER MINUTE
          30GLM 30GM DUAL GALLONS/LITERS PER MINUTE

3RD SEGMENT (5TH X) PROCESS CONNECTION
          2 1/4 INCH NPT THREADED ATTACHMENT
          4T 1/4 INCH SAE THREADED ATTACHMENT
          4BP 1/4 INCH BSPP THREADED ATTACHMENT
          4BT 1/4 INCH BSPT THREADED ATTACHMENT
          2 1/4 INCH WELDED/THREADED ANSI RAISED FACE FLANGE
          3 3/8 INCH NPT THREADED ATTACHMENT
          6T 3/8 INCH SAE THREADED ATTACHMENT
          6BP 3/8 INCH BSPP THREADED ATTACHMENT
          6BT 3/8 INCH BSPT THREADED ATTACHMENT
          3 3/8 INCH WELDED/THREADED ANSI RAISED FACE FLANGE
          4 1/2 INCH NPT THREADED ATTACHMENT
          8T 1/2 INCH SAE THREADED ATTACHMENT
          8BP 1/2 INCH BSPP THREADED ATTACHMENT
          8BT 1/2 INCH BSPT THREADED ATTACHMENT
          4 1/2 INCH WELDED/THREADED ANSI RAISED FACE FLANGE
          6 3/4 INCH NPT THREADED ATTACHMENT
          12T 3/4 INCH SAE THREADED ATTACHMENT
          12BP 3/4 INCH BSPP THREADED ATTACHMENT
          12BT 3/4 INCH BSPT THREADED ATTACHMENT
          6 3/4 INCH WELDED/THREADED ANSI RAISED FACE FLANGE
          8 1 INCH NPT THREADED ATTACHMENT
          16T 1 INCH SAE THREADED ATTACHMENT
          16BP 1 INCH BSPP THREADED ATTACHMENT
          16BT 1 INCH BSPT THREADED ATTACHMENT
          8 1 INCH WELDED/THREADED ANSI RAISED FACE FLANGE

3RD SEGMENT (6TH X) FLANGE ATTACHMENT
          NO FLANGE
          FW WELDED
          FT THREADED

3RD SEGMENT (7TH X) FLANGE MATERIAL
          NO FLANGE
          CS CARBON STEEL
          S 316 STAINLESS STEEL

3RD SEGMENT (8TH X) FLANGE CLASS
          NO FLANGE
          150 CLASS 150
          300 CLASS 300

3RD SEGMENT (9TH X) FLANGE STYLE
          NO FLANGE
          RF ANSI RAISED FACE

4TH SEGMENT (10TH X) FLUID OPERATING VISCOSITY
          32 32 SAYBOLT UNIVERSAL SECONDS (WATER)
          1 1 CENTIPOISE (WATER)
          1 1 CENTISTOKES (WATER)
          ? ENTER IN CUSTOM VISCOSITY

4TH SEGMENT (11TH X) FLUID VISCOSITY UNIT OF MEASURE
          V SAYBOLT UNIVERSAL SECONDS
          C CENTIPOISE
          CS CENTISTOKES

4TH SEGMENT (12TH X) SPECIFIC GRAVITY
          1.00 1.00 (WATER)
          ? ENTER IN CUSTOM SPECIFIC GRAVITY

5TH SEGMENT (13TH X) CONTROL BOX
          A A BOX
          L L BOX
          Z Z BOX
          R R BOX
          T T BOX

5TH SEGMENT (14TH X) TRANSMITTER
          NO TRANSMITTER
          X 4-20MA TRANSMITTER
          H HART DIGITAL COMMUNICATION PROTOCOL

5TH SEGMENT (15TH X) LIQUID CRYSTAL DISPLAY
          WITHOUT LCD
          L WITH LCD

5TH SEGMENT (16TH X) SWITCH
          0 NO SWITCHES
          1 ONE SPDT (3 WIRE)
          1B ONE HIGH VIBRATION SPDT (3 WIRE)
          2 TWO SPDT (3 WIRE)
          2B TWO HIGH VIBRATION SPDT (3 WIRE)
          3 ONE SPDT (4 WIRE)
          4 TWO SPDT (4 WIRE)
          7 ONE SPDT (HAZARDOUS LOCATION)
          17 ONE DPDT (HAZARDOUS LOCATION)
          18 TWO SPDT (HAZARDOUS LOCATION)
          19 TWO DPDT (HAZARDOUS LOCATION)
          53 ONE SPDT (3 WIRE) HERMETICALLY SEALED
          54 TWO SPDT (3 WIRE) HERMETICALLY SEALED
          61 ONE SPDT (3 WIRE) HIGH TEMPERATURE
          62 TWO SPDT (3 WIRE) HIGH TEMPERATURE
          71 ONE SPDT (3 WIRE) GOLD CONTACT
          72 TWO SPDT (3 WIRE) GOLD CONTACT

5TH SEGMENT (17TH X) SERVICE
          N OIL AND DUST TIGHT (TYPE 12)
          W WEATHERPROOF (TYPE 4)
          X WEATHERPROOF/CORROSION PROOF (TYPE 4X)

5TH SEGMENT (18TH X) FLOW DIRECTION
          R LEFT TO RIGHT
          L RIGHT TO LEFT
          U UP
          D DOWN

6TH SEGMENT (OPT) SPECIAL OPTIONS
          -HT HIGH TEMPERATURE
          -HA HIGH ACCURACY
          -ST STAINLESS STEEL ID TAG
          -TG SAFETY GLASS WINDOW
          -W WALL MOUNT BRACKET
          -F FOOT MOUNT BRACKET
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Model Description Availability* Price
A-DAK-MN-A-1 Dial assy kit for Series MN, A-L-Z control boxes with one 3-wire SPDT switch 1-2 Weeks*
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A-SAK-MN-F-A/T Seal kit for Series MN, A style box & T box (transmitter) FKM elastomer 1-2 Weeks*
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