PDFlo Positive Displacement Flow Meters for Industrial Service

A positive displacement meter that is affordable and accurate. One primary feature is the ability to maintain consistent accuracy despite changing viscosity conditions. This reliability, coupled with a large turndown range, offers an affordable replacement for older turbine technology.

Materials of Construction: Aluminum or stainless steel bodies; gears are stainless steel
Accuracy: +/-0.5% with over 10:1 turndown with 30cP fluid
Repeatability: +/-0.1%
Max Fluid Temperature: Meter 185°F Aluminum Body, Meter 400°F Stainless Body

The GearFlo™ Helical Gear Flow Meter is constructed of two highly accurate cycloid shaped screw spindles that mesh and rotate inside the cylindrical housing with two overlapping holes in the form of a figure 8, forming the measuring chamber. Its lower pressure drop makes this meter perfect for measuring polyurethanes and polymer, glues and sealing materials and heavy fuel oils.

Materials of Construction: stainless steel
Accuracy: +/-0.5%
Repeatability: +/-0.1%
Max Fluid Temperature: 300°F (higher temperature options available upon request)

The GearFlo™ PDTX4 is a four-wire, meter mounted digital flow transmitter that is compatible with most PDFlo flow meters. The PDTX4 is housed in a Class I Hazardous Location rated enclosure and features HART communication protocol. A large, back-lighted LCD graphic display provides an easy to read indication of flow rate or total in user programmable engineering units. To change any key functions, simply use the magnet that is attached. No opening of the enclosure is required. To prevent the magnet from entering the programming mode inadvertently, an on board jumper controls ability to allow programming via external magnet. An isolated input also allows for remote rest of the totalizer. A 4-20 mA rate output with user programmable filtering and scaling is also provided for remote indication.

Power Requirement: 15-24 VDC/150mA (customer supplied)
Sensor/Monitor Frequency Range: 0-4000 Hz
Analog Output: 4-20 mA
Enclosure Certifications: Class I, Groups B,C,D; Class II, Groups E,F,G; Class III; Atex: EEx d IIC, IP68; NEMA 4X, 7BCD, 9EFG

The GearFlo™ PDTX3 is a three-wire, meter mounted flow transmitter that is well-suited for a variety of remote monitoring applications. Microprocessor based, the PDTX3 delivers a fast and linear response. The operational frequency range is user defined and accepts frequencies up to 5,000 Hz. Output signals are available in six types to meet preferred voltage, mA and zero offset choices.

Supply Voltage: 110-30 VDC
Input: 0.25 Hz to 5 KHz
Output: 0-20 mA, 0-5 V, 0-10 V, 4-20mA, 1-5 V, 2-10 V
Enclosure Approvals: NEC Class I Groups C, D; Class II Groups E, F, G; UL Std. 886-CSA Std. C22.2 No. 30

The GearFlo™ PDTX2 is a two-wire, meter mounted flow transmitter that is compatible with most PDFlo flow meters. The PDTX2 is used in a wide variety of applications where ease of operation and flexibility are required. A NEMA 4X enclosure houses a large 6-digit LCD display screen where either flow rate or total is continuously displayed in the customers selected and programmed engineering units. The selection of rate, total, reset of the total, programmable sleep mode and the real-time clock can be done via magnet-without opening the enclosure. A long life field replaceable battery provides power for a period of 4 years – depending on the units configuration.

Power: Internal 3.6V “C” Cell Battery
Sensor/Transmitter Frequency Range: 0-3,000 Hz Max
Output Options: 4-20 mA, loop powered; Pulse output scaleable to 100 Hz
Enclosure Certifications: Class I, Groups B, C, D; Class II, Groups E, F, G; Class II ATEX: EExd IIC, IP68, NEMA 4X, FM Class No. 3615, CSA Class 1, Div 1Certification Pending

The GearFlo™ PDSR1 is a single hall effect sensor that is compatible with PDFlo GearFlo Positive Displacement Flow Meters. This sensor detects the rotation of the flow meter’s gears and emits a frequency signal proportional to flow. The GearFlo PDSR2 is a dual hall effect sensor that is compatible with GearFlo Positive Displacement Spur Gear flow meters. This microprocessor-based sensor can detect both uni- and bi-directional flow. The sensors’ mode of operation is determined by an output selection switch located inside the housing.

PDSR1 & PDSR2 Models

Supply Voltage: PDSR1: +10 to 28 VDC; PDSR2: +10 to 27 VDC
Minimum Signal: 0.5 Hz
Driving Capacity: 50mA Max resistance load
Temperature Range: -40ºF to 185ºF (-40º to 85ºC)

The GearFlo™ PDSR1 is a single hall effect sensor that is compatible with PDFlo GearFlo Positive Displacement Flow Meters. This sensor detects the rotation of the flow meter’s gears and emits a frequency signal proportional to flow. The GearFlo PDSR3 is a carrier-frequency pulse amplifier that can be paired with GearFlo Positive Displacement Helical Gear Flow Meters. The integral carrier-frequency pickup of the PDSR3 detects the r.p.m. of the flow meter.

PDSR1 Model
Supply Voltage: PDSR1: +10 to 28 VDC
Classification: General Purpose: PDSR1-__-GP; Explosion Proof: PDSR1-__-XP

PDSR3 Model
Supply Voltage, UB: +8.5 to 29 VDC, controlled
Classification: General Purpose: PDSR3-__-GP; Intrinsically Safe: PDSR3-__-IS (Ex II2 G EEx ia IIC T4)