We have the Technical Edge

Why us?

We have the most accurate temperature measurement

This is essential for the thermodynamic method. Be aware of two factors -

(1) The accuracy and stability of calibration of the temperature probes themselves (see Robertson MicroPM temperature probes).

The general specification we work to for differential temperature measurement is a long-term calibration accuracy of < 0.001 °C (0.0018 °F) for 10 years. This permits accurate continuous monitoring for total heads above about 10 m (33 ft). This specification is a factor of about 10 better than our competitors, who struggle with heads lower than 50 m. The lower the head, the lower the differential temperature signal.

As well as the calibration stability, each temperature probe has two temperature sensors, operating independently. An alert is provided in the event of any significant discrepancy between the two sensors. Otherwise, there could be no indication of a temperature measurement problem. Our competitors do not have this dual sensor feature. Would you fly in an aeroplane with no back-up systems?

(2) For continuous monitoring, the method used to insert the temperature probes to take the measurement.

Short, low mass thermowells are essential for accurate and continuous temperature measurement, to minimise vibration heating, mechanical stress, and stem effect.

In contrast, our competitors do not differentiate between portable and continuous monitoring, and immersion temperature probes are inserted into the fluid via gate valves. This method is prone to measurement error due to vibration heating, since longer probes are required to get through all the fittings. In addition, the mechanical stresses on longer probes will eventually lead to metal fatigue and fracture, so the method should not be used for continuous monitoring. Another problem is that build-up of calcines will eventually make it difficult to withdraw the temperature probe.

(For wet sumps, thermowells are not used for the suction temperature measurements)

We have the lowest running costs

A corollary of our dual sensor design is that maintaining temperature calibration is straightforward (see MicroPM Calibration Checks), an alert will be given if there is a significant change in calibration.

We have expert firmware (MicroPM™ continuous pump performance monitor)

This minimises SCADA or HMI development and maintenance costs

Installation and commissioning (MicroPM™) is easy

Installation is readily carried out by client or their contractors, and commissioning can be carried out with remote support (with the option of site visit, if required)

We have the experience

Our equipment has been used for many thousands of pump tests worldwide, under widely varying conditions, and we have already come across and dealt with most situations

We provide excellent after-sales service and support, worldwide

Since 2003, we have supported products and services to 22 countries on 5 continents. The earliest equipment we supplied is still in use. Equipment checks can be carried out remotely, with appropriate IT permissions.