Description
MKS 223BD-00001AAB Baratron 1 Torr Differential Pressure Transducer
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | MKS Instruments |
| Model | 223BD-00001AAB |
| Product Family | Baratron 223BD |
| Device Type | Differential pressure transducer |
| Measurement Technology | Capacitance manometer |
| Full-Scale Range | 1 Torr |
| Excitation | 15 VDC |
| Analog Output | 0–1 VDC |
| Pressure Type | Differential |
| Sensor Construction | Metal diaphragm capacitance sensing |
| Application | Low differential-pressure measurement |
The available part-specific records identify 223BD-00001AAB as a 1 Torr Baratron manometer with 15 VDC input and 0–1 VDC output. A technical application using the MKS 223BD family also documents a ±1 Torr full-scale differential-pressure configuration for precision pressure control.
Product Introduction
The MKS 223BD-00001AAB is a low-range Baratron differential capacitance manometer intended for applications where small pressure differences must be converted into a stable analog signal. Its 1 Torr range and 0–1 VDC output make it suitable for pressure-monitoring and closed-loop measurement systems that interface the transducer with an external controller, readout, or data-acquisition circuit.
Unlike a conventional mechanical pressure gauge, the measurement is based on diaphragm deflection and capacitance change. This architecture is useful where repeatable low-pressure differential measurement is more important than high-pressure measurement capability. The 223BD family has been used in precision analytical and laboratory pressure-control applications.
223BD-00001AAB
Application Scenarios & Field Pitfalls — The Engineer’s Perspective
Engineering Pain Point
A 1 Torr full-scale sensor leaves little room for installation errors. A transducer intended for low differential pressure can be electrically healthy while producing incorrect readings because of reference-line restrictions, pressure offsets, contaminated ports, or an unsuitable signal interface.
The 223BD-00001AAB should therefore be evaluated as a complete measurement loop: pressure ports, reference pressure, sensor excitation, output wiring, and the receiving analog input all affect the final reading.
Typical Applications
- Semiconductor manufacturing equipment
- Vacuum and low-pressure process monitoring
- Cleanroom differential-pressure measurement
- Laboratory and analytical pressure-control systems
Technical Pitfalls
1. Confirm the 1 Torr range.
Do not substitute a 10 Torr or higher-range 223BD simply because the mechanical configuration appears similar. A higher-range transducer changes the pressure-to-voltage relationship and can reduce usable measurement resolution.
2. Verify the analog input scaling.
The documented configuration for 223BD-00001AAB is 0–1 VDC output. The receiving controller or DAQ channel must be scaled accordingly. Treating it as a 0–10 V transmitter will produce incorrect engineering values.
3. Check the excitation requirement.
Part-specific references identify 15 VDC as the required input. Do not assume a generic 24 VDC instrumentation supply is acceptable without confirming the exact sensor configuration.
4. Differential pressure is not absolute pressure.
The 223BD measures the pressure difference between its two sides. The reference-side plumbing therefore matters just as much as the process-side connection. A restricted or leaking reference line can create an apparent sensor calibration problem.
5. Protect the diaphragm from pressure transients.
The 1 Torr measurement range is intended for very small pressure differences. Pressure spikes, incorrect valve sequencing, or uncontrolled gas flow can expose the sensing element to conditions outside its intended measurement range.
6. Verify the complete suffix.
The 223BD family contains multiple ranges and configurations. For procurement, 223BD-00001AAB should be specified in full rather than ordering a generic “MKS 223BD.”
7. Check zero before blaming the controller.
When the analog value appears incorrect, first establish the actual differential pressure at the two ports and confirm the electrical zero/output behavior. A scaling or reference-pressure problem can easily be mistaken for a failed transducer.
Related Products
- MKS 223BD-00010AAB — Related 223BD configuration with a higher 10 Torr measurement range.
- MKS 223BD-00010-ABS-SPCAL-SPFTG — 10 Torr 223BD Baratron configuration with application-specific options.
- MKS 223B Series — Earlier/related Baratron differential-pressure transducer family.
- MKS 226A Series — Later differential-pressure transducer family used in low-pressure applications.
- MKS 221 Series — Signal-conditioner hardware used with compatible Baratron pressure sensors.
- MKS 250C — Controller commonly used in pressure-control applications involving Baratron measurement devices.
- MKS 170M-6C — Manometer controller/readout family associated with MKS pressure measurement systems.
Procurement Note
For MKS 223BD-00001AAB, the critical matching parameters are 1 Torr range, differential-pressure configuration, 15 VDC excitation, and 0–1 VDC output. Do not substitute based on the 223BD family name alone. For semiconductor or vacuum equipment, also verify the pressure-port configuration, reference-side arrangement, connector/wiring, calibration condition, and analog-input scaling before installation.
