Pneumatic Batch Controller

Manual

Diaphragm Pump Pneumatic Batch Controller

Accessories for your Air-Operated Diaphragm Pump

Blog / 2019

Diaphragm Pump Pneumatic Batch Controller

The Pneumatic Batch Controller is a versatile and accurate way to dispense a predetermined volume of liquid or gas from your Tapflo Diaphragm Pump. The controller is available in 2 key variations: predetermining batch control and timed batch control. The predetermining batch control variation (TPUK-BP) uses the number of strokes generated by the pump to control the dispensed volume. The timed batch control variation (TPUK-BT) uses the elapsed time to control the dispensed volume. Additional variations include the TPUK-BPI and TPUK-BTI for internal mounted control to prevent unauthorised adjustments and the TPUK-BP-ATEX for use in hazardous environments.

Accurate and repeatable dispensed volumes
Durable construction for challenging environments
Improve efficiency of your Diaphragm Pump by automating the operation

Manual

Overview Specifications

TPUK-BP Variation

Predetermining Batch Control

The system records the number of strokes generated by the pump as a series of low-pressure pulses from the air exhaust of the pump. The pump is stopped once a number of pre-set strokes have been achieved, thus controlling the volume of product dispensed by the pump. Volumes generated per stroke can be found within the technical data sheets of the pump in question.

TPUK-BT

Timed Batch Control

The pump can be started locally or remotely, stopping automatically once the set time has elapsed, thus controlling the volume of product dispensed by the pump.

Times Ranges

Model	Time Range	Repeat Accuracy	Setting Accuracy
*TPUK-BT-030S**	2-30 Seconds	/-0.3 Seconds	/-0.6 Seconds
*TPUK-BT-120S**	8-120 Seconds	/-1.2 Seconds	/-2.4 Seconds
*TPUK-BT-300S**	20-300 Seconds	/-3.0 Seconds	/-6.0 Seconds

If the batch controllers are installed in a system which has a positive suction head or the pump is below the fluid level there is a chance that siphoning may occur which can cause inconsistent batch sizes. Simply install one of our Non-Return Valves with a cracking pressure greater than the head pressure to prevent this. The batch controllers can be installed a maximum of 20 m away from the pump and can also be linked with either manual or electronic Remote Start / Stop Remote Station which can also be mounted 20 m away from the batch controller and controlled by a PLC for example.

TPUK ATEX Variation

Tapflo UK has developed the TPUK-BP-ATEX to be used for accurate and repeatable dispensed volumes within ATEX zones containing both gas and dust.

Classification: Gas and dust Zone II

Ex h IIB T4 Gb

Ex h IIIB T135°C Db

ATEX Batch Controller Features

New features and improvements for the TPUK-BP-ATEX compared to the previous design:

Temperature class T4 (135°C)
The enclosure is made from electrically conductive GRP
Earthing point for dissipation of electrostatic charge – must be permanently connected
IP66 Rated enclosure and inspection window covering the counter to enable use in washdown environments and chemical environments
Improved connection sealing via O-Rings to prevent ingress
Anti-tamper function through screwed locks on the inspection window

Overview