Product Description

Model MC1 Industrial Pressure Controller

The new MC1 high-accuracy controller is the latest addition to the DH-Budenberg range of world-leading pressure calibration products.

Using proven and reliable technology, DH-Budenberg have produced a controller that is based around a single base unit that can control pressures to 0.005% across an extremely wide range, from -1 to 210bar. Along with fully interchangeable SMART sensors, the MC1 provides a flexible

and high-accuracy solution for both industrial and metrological applications.

The SMART sensors, as well as being quickly interchangeable, are instantly recognized by the MC1 and the range is displayed for the user on the large colour screen. All sensor ranges are available in either gauge or absolute mode allowing maximum flexibility from one single MC1 chassis. When fitted with an optional barometer, the MC1 can also provide gauge simulation from an absolute SMART sensor.

DH-Budenberg SMART sensors contain all of their calibration coefficients on-board, and can be installed in any MC1 chassis.

The chassis itself, is available as a laboratory style unit, or can be fitted with a 19” rack mount for integration into a fully automated test system.

The MC1 comes as standard with two operating syntaxes for full pc-driven automation. It can be used with the DH-Budenberg syntax command set, or can also be used with a SCPI command set. Customer-based software drivers, such as those in LABVIEW, can also be provided as an option.

Interchangeable SMART Pressure Sensor

Use of latest digital compensation techniques, coupled with a very stable, and accurate, measurement pressure cell, equates to a highly accurate SMART pressure sensor. This enables a multitude of SMART sensors to be connected to a common base unit. This flexibility not only ensures that the required accuracy can always be achieved, but reduces downtime due to the ability to easily replace the SMART sensors. On fitting a SMART sensor, the MC1 instantly recognizes the sensor range and amends its control algorithm to suit the new range.

SMART Sensor Recalibration

Only the SMART sensor needs to be returned for calibration.

Following recalibration, a simple leak test needs to be performed, before the unit is put back into full operation. All calibrators are also available with:

UKAS, COFRAC, or DKD Certificate of calibration.

General

Ranges from -1 bar to 210 bar g or 0 to 210 bar A.

Barometric Reference Option.

Accuracy 0.01 %.

Calibration coefficients are stored on-board the sensor rather than the MC1 chassis. Requires external clean, dry, non-corrosive, filtered gas supply.

Operating principles and features

All of the MC1 control functions and parameters are accessible through the large full-colour touch-screen. The menu layout is extremely intuitive, and easily navigable and therefore needs no specialist training. Each of the functions is available through large, easily read touch-buttons, using a logical process sequence in order to produce fast results.

Functions:

Volume Test     

The MC1 has a unique system of calculation of the volume under test. Using this calculated volume, the MC1 automatically selects the internal control algorithm to provide the best pressure generation response for the operating conditions.

Divider/Sequencing      

This function allows the user to quickly calibrate an instrument across its full range at equal pressure points. The user enters the full range of the device under test, and the number of test points required, and then the MC1 automatically calculates the pressures steps needed. The user can then command the MC1 to step up and down through pre-calculated test points.

Preset  

Is similar to the divider function, except that the pressure steps are selectable by the user, and do not need

to be equally spaced across the full range.

Leak Test            

Similar to the pressure switch test above, leak test files can be created and stored on the MC1 for retrieval via USB. The MC1 generates the requested pressure and then the control output is isolated. The MC1 monitors the external pressure, and records the decay to indicate the leak-rate of the system under test.

Fine tuning        

The selected pressure set point can be “toggled” up and down by using the touch-screen tuning buttons. The fine-tuning pressure step is user-selectable down to 0.005%

Stability Display              

A pressure stability indication is present during all pressure calibrations, and consists of three elements:

a)            a bar graph giving a dynamic picture of the pressure change;

b)            a red/green ‘hold’ indication that the pressure has reached the user-selectable “stable pressure window”;

c)            a red/green ‘stable’ indication that the pressure has remained stable for the user-selected requisite time-span.

Over-range protection 

The MC1 automatically detects the SMART sensors which are fitted, and displays the pressure range of the fitted sensor on the control screen. The selection of pressure values is then automatically restricted to the SMART sensor range, therefore ensuring that the sensor cannot be over-pressurised in normal use.

Taring  

The need for taring of the controller is eliminated by automatic zeroing of the sensor, each time the MC1 is set to “vent”

STOP function  

The MC1 can obviously be used in dynamic CONTROL mode to generate an accurate pressure. Alternatively, when switched into “STOP” mode, the MC1 can be used to monitor the output pressure circuit in static mode.