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Phone: +86 16626708626Description
- Key Technical Specifications
| Parameter | Specification / Value |
| Measurement Principle | Variable capacitance diaphragm (gas-independent absolute measurement) |
| Full Scale Pressure Ranges | 10 Torr to 1,000 Torr (custom range options available) |
| Accuracy | 0.50% to 1.00% of Reading (standard industrial calibration) |
| Output Signal | 0 V to 10 V DC linear full scale |
| Input Power Requirements | ±15 V DC (±5%) at 35 mA maximum |
| Operating Temperature | 0 °C to +50 °C (32 °F to 122 °F) |
| Wetted Materials | Inconel and 316L Stainless Steel for corrosive gas compatibility |
| Fitting Connections | 8 VCR female, 1/8″ NPT, or NW16 KF flange options |
| Electrical Connector | 9-pin D-subminiature or 15-pin high-density D-sub |
| Overpressure Limit | 45 psia or 2x Full Scale (whichever is greater) without calibration shift |
- Product Introduction & Supply Chain Strategy
The MKS BY150 Baratron is an unheated, high-precision capacitance manometer designed for absolute pressure measurement in semiconductor processing, vacuum coating, thin-film deposition, and pharmaceutical freeze-drying applications. Utilizing an Inconel sensing diaphragm, it measures true total pressure independently of gas composition, eliminating calibration recalculations when switching process gases.
Sourcing the BY150 as New Surplus protects vacuum processing tools against costly yield loss and unscheduled tool downtime. Refurbished pressure transducers carry major operational risks—specifically micro-deformations of the internal diaphragm, zero-drift instability, and contaminated wetted surfaces from prior process runs. Installing an un-aged New Surplus MKS BY150 ensures factory zero-stability, precise repeatable readings, and maximum tool availability.
- Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
- Ensure the vacuum chamber and gas delivery lines are fully vented to atmosphere and purged with dry nitrogen.
- Put on cleanroom-grade nitrile gloves and an ESD-grounded wrist strap before handling the sensor.
- Verify the mechanical seal style (VCR gasket, KF O-ring, or NPT thread sealant) required for your tool port.
Stage 2: Removal
- Unplug the multi-pin signal cable from the top connector of the existing transducer.
- Isolate the sensor port from the main process chamber by closing the dedicated manual or pneumatic isolation valve.
- Carefully loosen the vacuum fitting (using two wrenches for VCR fittings to prevent twisting the sensor body) and remove the old unit.
Stage 3: Installation (Clone & Seat)
- Inspect the seal face on the replacement MKS BY150 for scratch-free, particle-free condition; always use a new metal VCR gasket or clean Viton O-ring.
- Thread the fitting onto the port finger-tight, then torque to standard manufacturer specifications using backing wrenches to protect the internal diaphragm assembly.
- Reattach the multi-pin electrical interface cable and secure thumb screws firmly.
Stage 4: Power-On & Testing
- Supply ±15 V DC power and allow the sensor a 15-minute thermal stabilization period prior to taking reference measurements.
- Pump the vacuum chamber down below the sensor’s resolution limit (typically <0.01% of Full Scale) to verify zero stability.
- Adjust the front-panel or potentiometer Zero trim button until the analog output reads precisely 0.000 V DC on a calibrated multimeter.
- Firmware/Software Versions & Upgrade Notes
- Analog Calibration Integrity: The MKS BY150 operates as an analog voltage-output transducer and does not utilize onboard firmware or software chips.
- Controller Interface Compatibility: Fully compatible with MKS 247, 647, and 937-series power supply/display controllers, as well as standard 0–10 V DC PLC analog input cards.
- Hardware Pinout Warnings: Verify cable pinouts when upgrading older 9-pin D-sub configurations to newer 15-pin setups. Mismatched power supply pins (applying +15 V to the output signal pin) will permanently damage the internal amplifier circuitry.
BY150
BY150
- Frequently Asked Questions (FAQ)
Q: Are these MKS BY150 Baratron transducers brand new and unused?
A: Yes. We deal exclusively in New Surplus and factory-fresh original units sourced from surplus OEM inventory and plant safety stocks. They feature unblemished wetted surfaces, zero operational hours, pristine connector pins, and have never been exposed to process gases.
Q: Why pay more for New Surplus instead of a cheaper refurbished MKS transducer?
A: Refurbished capacitance manometers often suffer from hidden diaphragm fatigue, memory effects from aggressive gas exposure, and severe zero-point drift. A drift of just 1% in process pressure can ruin an entire production batch worth thousands of dollars. New Surplus provides 100% factory accuracy and long-term repeatability.
Q: Does the MKS measure pressure depending on the gas type?
A: No. The measures mechanical deflection of a tensioned metal diaphragm caused by physical pressure. Because it measures force directly, the output is 100% gas-independent, unlike thermal conductivity (Pirani) or ionization gauges.
Q: Can I calibrate or zero the transducer in the field?
A: Yes. You can perform routine zero adjustments in the field by pumping the system down below the sensor’s minimum detectable limit and adjusting the zero-potentiometer on the unit until the output reads 0.00 V DC. Full-scale span adjustments should be performed in a calibrated laboratory.
Q: What warranty coverage is included with this unit?
A: Every MKS transducer undergoes thorough visual inspection, seal integrity evaluation, and static power-up checks in our ESD-safe facility prior to dispatch. All New Surplus items carry our standard 1-year replacement warranty.
