Microflex MP-1000 MicroPulser 1000 Precision 2 Channel Volume Pulser, Provides 1000 Pulses Per Revolution

Features

• Detects flow direction and provides a separate output for clockwise and counter-clockwise rotation
• Provides 1000 pulses per revolution
• Designed for class I, Division 1 Groups C and D locations
• Designed to fit most industrial and commercial gas meters
• Microprocessor True Absolute Rate algorithm removes error pulses caused by vibration
• Open collector outputs simplify interfacing
• Standard 1/2" NPT electrical connection
• Environmentally sealed electronics
• Lubrication free Engineered Plastic bearings

MicroPulser 1000 provides a pulse output for forward flow (rotation in one direction) and a seperate output for reverse flow (rotation in the opposite direction).  Only MicroPulser offers this feature.  Determining index rotation direction allows blocking flow pulses in reverse flow.  If flow is to be measured in both directions from separate outputs, the index shaft must reverse 36 degrees (100 pulses) before pulses will appear on the reverse flow output. 

MP-1000 Brochure (PDF)
MicroPulser Manual (PDF)
Installation Drawing (PDF)

MicroPulser is a precision microprocessor-based dual channel flow rate transmitter designed to be installed between the meter and the vertical index, or instrument on most industrial/ commercial gas meters. MicroPulser provides high-resolution flow rate information to RTU’s, flow computers or any other device requiring accurate flow rate information. Flow rates can be calculated more frequently using MicroPulser due to the 1000 pulses per revolution output. Pulsers with only 100 pulses per revolution take 10 times longer to produce the same flow rate information as MicroPulser. In some cases, such as sampling systems or flow rate telemetry, quick updates can significantly improve overall performance and accuracy. High-speed flow computers with quick sample rates can be significantly improved with the MicroPulser’s high resolution. A primary cause of pulser failure is corrosion of the index shaft and bearings. MicroPulser uses maintenance-free engineered plastic bearings and a 316 stainless steel index shaft to minimize added torque to the meter movement.

True Absolute Rate™ is determined using direction and position tracking algorithms. At 1000 pulses per revolution even the slightest vibration (0.36 degrees of rotation per pulse) in the index shaft can add significant errors to other pulsers. Only MicroPulser uses a dual-channel optics system and a microprocessor to remove false rotation pulses and transfer only precision information to the correct output. If vibration or index bounce causes the index shaft to move in the opposite or wrong direction, the error rotation distance is measured. The index must then move in the forward direction by the same amount before pulses are again produced. Rotating 36 degrees (100 pulses) in the same direction reverses the absolute rate rotation direction. This allows for a plus or minus 36-degree window to strip off false pulses caused by vibration or index bounce.

Dual Outputs allows for volume calculations in reverse flow directions. Clockwise pulses are only produced when the index shaft is rotating in the clockwise direction. The True Absolute Rate filter requires that the index shaft rotate a 36 degrees in the same direction before output direction is reversed. If you need pulses supplied to two devices from the same meter, consider the 1000M with matched outputs.

Specifications include a hard anodized aluminum housing, machined from a solid block. The NEMA 3R enclosure provides various mounting configurations to fit most meters.