MKS HPS 909AR Digital & Analog Hot Cathode Transducer KF-40, RS-232, 10-10 to 10-2 Torr
MKS HPS® Series 909AR Digital and Analog Hot Cathode Transducer, KF-40, RS-232 PN 909AR-51

The HPS® hot cathode sensor is Bayard-Alpert style, which utilizes a fine wire collector located at the center of a grid. Due to its small area, few x-rays hit the collector; therefore, the gauge can measure very low pressures. The 909AR transducer includes two yttria-coated iridium filaments for reduced downtime. Yttria-coated iridium is resistant to damage caused by high oxygen partial pressures and exposure to atmosphere. The tube sensor operates at lower temperatures, giving a lower chemical reaction rate and minimizing thermal interference. The sensor includes a screen to shield it from large particles. The Series 909AR includes RS232 or RS485 digital communication as a standard feature.

Digital communication allows for all adjustments and monitoring to be delivered real-time, via a host computer. For additional process control, the 909AR has a relay set point. The set point pressure, hysteresis and direction can all be adjusted and monitored via the digital port. The Series 909AR also features analog controls and analog output with 0 to 10 volts semilogarithmic output, 1 volt per decade for simplified system integration. Customers requiring both a power supply and display can use the 909AR with the PDR900 Series Controller sold on this website. For Complete Specs and Operation Information See AVAILABLE DOWNLOADS Below.
  • Specifications and prices are subject to change without notice. HPS® and MicroPirani™ are Registered Trademarks of MKS Instruments, Inc.


    Options, (PN) Part Number and Pricing : MKS HPS® Series 909AR Digital and Analog Hot Cathode Transducer

    CF 1.33, RS-232,
    PN 909AR-11, 2009 Price $1221
    CF 1.33, RS-485,
    PN 909AR-12, 2009 Price $1221
    CF 2.75, RS-232,
    PN 909AR-21, 2009 Price $1234
    CF 2.75, RS-485,
    PN 909AR-22, 2009 Price $1234
    KF 16, RS-232,
    PN 909AR-31, 2009 Price $1202
    KF 16, RS-485,
    PN 909AR-32, 2009 Price $1202
    KF 25, RS-232,
    PN 909AR-41, 2009 Price $1214
    KF 25, RS-485,
    PN 909AR-42, 2009 Price $1214
    KF 40, RS-232,
    PN 909AR-51, 2009 Price $1221
    KF 40, RS-485,
    PN 909AR-52, 2009 Price $1221

  • All Prices subject to change without notice.
    Product: MKS HPS 909AR Digital & Analog Hot Cathode Transducer KF-40, RS-232, 10-10 to 10-2 Torr
    Condition:      New
    Warranty:     Against Product Defect
    Part Number: P102873
    Price: $1,703.77