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# MKS Instruments 974B Cold Cathode Transducer

_Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._

## Summary

- Manufacturer: MKS Instruments
- Model: 974B
- Condition: Used and in Excellent Condition
- Price: $1,295.00 USD
- Availability: In stock, 1 available
- Warranty: 1-Year Warranty with 30-Day Return Guarantee
- ITAR restricted: No
- Shipping weight: 2.5 lb, estimated
- Shipping dimensions: 12X9X6 in, estimated

## Categories

- Industrial Systems Equipment > Sensors and Transducers > Transducers (primary)

## Details

### Configuration

- Sensor Type: Cold Cathode / MicroPirani (MEMS Thermal Conductivity) / Piezo Differential (MEMS Diaphragm)
- Measuring Range Absolute: 1 x 10-8 Torr to 1500 Torr
- Measuring Range Differential: -760 to +760 Torr
- Set Point Range Absolute: 1 x 10-8 Torr to 1000 Torr
- Set Point Range Differential: -760 to +100 Torr
- Digital Communications: RS485 or RS232

Part Number: 974B-72024

## Function

The MKS Instruments 974B Cold Cathode Transducer is a versatile pressure measurement device designed for a range of applications. It combines several sensing technologies to provide accurate readings over a broad pressure range. Here's a breakdown of its key features:

1. **Sensor Type**:
   - **Cold Cathode**: Utilizes a discharge type sensor for vacuum pressure measurement.
   - **MicroPirani (MEMS Thermal Conductivity)**: Employs a microelectromechanical system (MEMS) for medium vacuum range using thermal conductivity.
   - **Piezo Differential (MEMS Diaphragm)**: Uses a MEMS diaphragm for differential pressure measurement, useful for applications with rapid changes in pressure.

2. **Measuring Range**:
   - **Absolute Pressure**: Can measure pressures from 1 x 10-8 Torr up to 1500 Torr, which covers ultra-high vacuum to atmospheric pressure.
   - **Differential Pressure**: Capable of reading from -760 to +760 Torr, useful for applications requiring pressure differentials measurement across a membrane, for instance.

## Images

- <https://www.artisantg.com/itemimages/mks_instruments_974b_view1_20251020141045.jpg>
- <https://www.artisantg.com/itemimages/mks_instruments_974b_view2_20251020141045.jpg>
- <https://www.artisantg.com/itemimages/mks_instruments_974b_view3_20251020141045.jpg>
- <https://www.artisantg.com/itemimages/mks_instruments_974b_view4_20251020141045.jpg>