MKS R750B13TCE2GG Replacement for Baratron 750B Series

Product Overview

MKS R750B13TCE2GG Replacement for Baratron 750B Series: Smooth Migration from Legacy Vacuum Measurement Systems

The MKS R750B13TCE2GG is a Baratron® 750B Series capacitance manometer rated at 1000 Torr absolute pressure, designed for precision vacuum and process pressure measurement in semiconductor fabrication, thin-film deposition, chemical vapor deposition (CVD), and industrial process control environments. When your existing Baratron® 750 or 752 series transducer reaches end-of-life, or when your OEM equipment manufacturer has discontinued the original part, the R750B13TCE2GG provides a validated, drop-in compatible upgrade path that minimizes engineering rework and unplanned downtime.

Many facilities running legacy process chambers — including etch, deposition, and diffusion tools from the 1990s and 2000s — rely on MKS Baratron® capacitance manometers as the primary pressure feedback element for mass flow controller (MFC) loops and throttle valve control. When these sensors drift beyond calibration limits or fail outright, the impact on yield and throughput is immediate. The R750B13TCE2GG is engineered to restore measurement integrity without requiring changes to the existing signal conditioning infrastructure, controller setpoints, or process recipes.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful migration from a failed or discontinued Baratron® unit to the R750B13TCE2GG typically involves more than a one-for-one sensor swap. In practice, field engineers also evaluate the condition of the associated MKS 670 Signal Conditioner or PDR-C Power Supply / Display unit, since aging signal conditioning electronics can introduce offset errors that mask the true performance of a new transducer. If the 670 unit is beyond its service interval, replacing it alongside the R750B13TCE2GG eliminates a common source of post-installation drift complaints.

For chambers using MKS 1179A or 1479A Mass Flow Controllers in the same gas line, verifying that the MFC’s pressure compensation setpoint matches the new transducer’s calibrated output range is a critical commissioning step. Mismatched pressure references are a leading cause of flow accuracy degradation after sensor replacement. Similarly, if the process tool uses an MKS 253 or 248 throttle valve controller for pressure regulation, the PID parameters should be re-verified after installation, as the new sensor’s improved accuracy may require minor loop tuning.

Facilities upgrading multiple measurement points in the same vacuum system often replace the MKS 627D or 628B Baratron® units on the foreline and roughing stages at the same time, taking advantage of the scheduled maintenance window to restore full-system measurement traceability. Combining these replacements into a single procurement reduces freight costs and consolidates the warranty start date across all sensors.

Where the original installation used a KF-25 to VCR adapter fitting to interface the Baratron® to a conflat or ISO-K flange, the same adapter hardware is reusable with the R750B13TCE2GG, provided the O-ring and centering ring are replaced as part of the installation procedure. This is particularly relevant in older CVD and LPCVD tools where the vacuum manifold was designed around KF quick-connect fittings rather than the VCR face-seal standard now common in newer equipment.

For facilities that have migrated their process control architecture to a modern DCS or PLC platform — such as a Siemens S7-300 / S7-1500 series controller or an Allen-Bradley ControlLogix system — the 0–10 VDC analog output of the R750B13TCE2GG interfaces directly to standard analog input modules without any signal conversion. If the legacy system used a proprietary MKS RS-232 or DeviceNet interface card, consult the MKS 670 documentation to confirm the correct output mode selection before commissioning.

Retrofit Guidance FAQ

Q: Can I reuse the existing wiring harness from my old Baratron® 750B unit?
A: Yes. The R750B13TCE2GG uses the same 15-pin D-sub connector pinout as the standard Baratron® 750B series. In most installations, the existing cable can be reconnected without modification. Verify pin assignments against the MKS 750B wiring diagram if the cable was field-modified.

Q: Do I need to update my PLC or DCS program after replacing the sensor?
A: No program changes are required if the replacement unit has the same full-scale range (1000 Torr) and output signal (0–10 VDC). The engineering unit scaling in the controller remains valid. If the original sensor had a non-standard output range or a custom calibration offset, re-verify the scaling block in your analog input channel.

Q: Is the R750B13TCE2GG compatible with my existing MKS 670 signal conditioner?
A: Yes. The 670 series signal conditioner is the standard interface for Baratron® capacitance manometers and is fully compatible with the R750B13TCE2GG. Ensure the 670 is set to the correct full-scale range (1000 Torr) before powering up the new sensor.

Q: What is the physical installation clearance requirement?
A: The R750B13TCE2GG shares the standard Baratron® 750B body envelope. No changes to mounting brackets, cable management, or control cabinet layout are required in a direct replacement scenario.

Q: How do I verify the sensor is functioning correctly after installation?
A: Apply a known reference pressure (atmospheric or a calibrated vacuum standard) and confirm the output voltage matches the expected value per the calibration certificate. Cross-reference against a secondary gauge if available. MKS recommends a 30-minute warm-up period for the temperature-controlled (TCE) variant before taking calibration readings.

Q: Can this unit replace sensors from other manufacturers used in the same pressure range?
A: The R750B13TCE2GG can functionally replace third-party capacitance manometers in the 1000 Torr absolute range, provided the output signal and connector type are compatible. Signal conditioner compatibility must be verified independently for non-MKS signal conditioning equipment.

Warranty Assurance

Every MKS R750B13TCE2GG unit shipped from TOPNLMS carries a 12-month warranty covering manufacturing defects and functional performance against the published MKS specification. Prior to dispatch, each unit undergoes functional verification including output linearity check, zero-point verification, and connector integrity inspection. Units are packaged in anti-static, shock-absorbing materials consistent with MKS OEM packaging standards to prevent transit damage.

In the event of a warranty claim, TOPNLMS provides a direct replacement or full refund within the warranty period, subject to inspection. Our technical team is available to assist with installation questions, compatibility verification, and post-installation commissioning support. Typical order processing time is 1–3 business days, with express shipping options available for urgent downtime recovery situations. A NIST-traceable calibration certificate is included with each shipment.

For volume procurement, scheduled maintenance contracts, or multi-unit replacement programs, contact our sales team directly to discuss pricing, lead times, and consolidated warranty terms.

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