2-8930-101

Pressure Sensors Transducers Overview

The Televac MX4A Active Convection Digital Vacuum Gauge (Part Number 2-8930-101) is a Pirani-based instrument designed for precise vacuum measurement. It features an active convection mechanism to extend the lower pressure range compared to standard passive gauges. The device provides a linear analog voltage output ranging from 0 V to 10 V, corresponding to a full-scale reading of 19.34 PSI (133.32 kPa). This module integrates a replaceable Televac 4A convection sensor, allowing for field maintenance without tools. The gauge operates within a measurement range of 1×10⁻⁴ Torr to 1000 Torr, utilizing active heating to maintain accuracy at low pressures.

Pressure Sensors Transducers Feature Summary

• Active convection technology extends measurement sensitivity into the lower vacuum range
• Tool-free replacement of the internal convection vacuum sensor
• Standardized 0 V to 10 V linear analog output signal
• Integrated Pirani sensing element for robust vacuum monitoring

Pressure Sensors Transducers Applications

• Industrial vacuum chamber monitoring
• Semiconductor manufacturing process control
• Scientific research equipment instrumentation
• Vacuum coating and deposition systems

Pressure Sensors Transducers Procurement Notes

Verify that the specific part number 2-8930-101 corresponds to the MX4A model with the 0-10 V output configuration. Confirm that the required measurement range aligns with the 1×10⁻⁴ Torr to 1000 Torr specification. Ensure compatibility with existing mounting hardware and power supply requirements before finalizing the order. Cross-reference the datasheet to confirm the sensor type is the active convection variant rather than a passive thermocouple gauge.

Pressure Sensors Transducers Selection Notes

Select this model when active convection is required to achieve accurate readings at lower pressures where passive Pirani gauges may lose linearity. The 0-10 V output is suitable for integration with PLCs or data acquisition systems requiring standard analog signals. Consider the tool-free sensor replacement feature if maintenance accessibility is a priority in the installation environment. Verify that the physical dimensions fit the available panel space or enclosure.

Pressure Sensors Transducers Part Context

This component belongs to the Televac MX4A series of active convection digital vacuum gauges. It utilizes the Televac 4A convection vacuum sensor, which is distinct from standard thermocouple sensors due to its active heating capabilities. The series is designed for applications requiring extended low-pressure ranges. The part number 2-8930-101 specifically identifies the gauge module with the defined voltage output and sensor configuration.

Pressure Sensors Transducers Replacement Considerations

The internal sensor can be replaced using part numbers starting with 2-2120-0YY for the active convection sensor. For general 4A convection sensor replacements, consult part numbers beginning with 2-2119-0XX. Ensure any substitute maintains the active convection characteristic to preserve the extended low-pressure performance.

Pressure Sensors Transducers FAQ

What is the difference between the MX4A and a standard Pirani gauge?

The MX4A utilizes active convection technology, which actively heats the sensor to extend the measurable pressure range down to 1×10⁻⁴ Torr, whereas standard passive Pirani gauges typically have a higher lower-limit threshold.

How is the vacuum sensor replaced?

The Televac 4A convection vacuum sensor is designed for easy replacement without the use of screws or specialized tools.