Product Description
HPS (MKS) Series 941 Cold Cathode Vacuum Gauge Controller – Analog Display
This used HPS (MKS Instruments) Series 941 is an analog cold cathode vacuum gauge controller designed for measuring vacuum pressure from medium to ultrahigh vacuum ranges . It is part of the HPS cold cathode gauge product line, which includes the Series 943 digital controller, the Series 941 analog controller, and the Series 421 and 423 cold cathode sensors .
About the HPS Series 941
The Series 941 analog controller is designed to operate with HPS cold cathode sensors, including the Series 421 and Series 423 I-Mag sensors . It provides a logarithmic analog readout of vacuum pressure, making it suitable for applications requiring pressure monitoring from 10^-2 to 10^-9 Torr .
Key Features & Specifications
| Specification | Details |
|---|---|
| Manufacturer | MKS Instruments, HPS Division |
| Model | Series 941 |
| Type | Analog cold cathode gauge controller |
| Compatible Sensors | HPS Series 421 Cold Cathode Sensor, Series 423 I-Mag Cold Cathode Sensor |
| Measurement Range | 10^-2 to 10^-9 Torr |
| Display Type | Logarithmic analog meter |
| Output | Analog output for remote monitoring (typical) |
| Form Factor | Benchtop / Rack-mountable (1/4 or 1/2 rack width typical) |
About Cold Cathode Gauge Technology
Cold cathode ionization gauges operate without a hot filament, using a high voltage discharge to ionize gas molecules. They are ideal for measuring medium to ultrahigh vacuum without the risk of filament burnout . The logarithmic output provides pressure readings across multiple decades on a single meter scale.
System Requirements
This controller requires an HPS Series 421 or 423 cold cathode sensor for operation. The sensor connects via a high-voltage cable (not included). The analog output can be connected to external monitoring equipment if desired.
Condition:
SOLD AS IS
USED – SHOWS NORMAL LAB WEAR (rack marks, scuffs, cosmetic wear)
UNTESTED – GAUGE OPERATION/ACCURACY NOT VERIFIED
NO COLD CATHODE SENSOR INCLUDED (requires Series 421 or 423 sensor)
NO HIGH-VOLTAGE CABLE INCLUDED (unless specified)
PICTURE MAY NOT MATCH PRODUCT
⚠ SYSTEM NOTE: This is a controller only and requires a compatible cold cathode sensor (HPS Series 421 or 423) and appropriate high-voltage cable for operation.
Potential Applications
-
Medium to high vacuum system pressure monitoring
-
Research and development vacuum systems
-
Thin-film deposition equipment
-
Electron microscopy vacuum monitoring
-
Particle accelerator vacuum systems
-
General laboratory vacuum measurement
| Weight | 5.2 lbs |
|---|---|
| Dimensions | 10 × 8 × 6 in |
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