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The Fredericks Company
Televac MX7B Cold Cathode Ionization Active Gauge

Televac MX7B Cold Cathode Ionization Active Gauge

Product catalog summary

Operating Specifications
The MX7B Active Gauge operates within a range of 1x10^-8 Torr to 1x10^-3 Torr. It features an OLED display, RS-485 and USB digital communications, and a configurable analog output of 0 to 10 V DC. It includes two programmable set points, with set point 1 being an open collector and set point 2 a relay. The device requires a supply voltage of 22 V DC to 26 V DC and has a maximum power consumption of 8 W. It is calibrated using dry air or nitrogen and can withstand overpressure up to 150 PSI. The operating temperature range is 0 °C to 50 °C, with storage temperatures between -20 °C and 60 °C. The gauge has a response time of ≤ 150 ms and an accuracy of ±30% of reading from 1x10^-7 to 1x10^-3 Torr.

Ordering Information
The MX7B is available with different fittings, including NW25 (DN25 ISO-KF) Stainless Steel and ¾” NPT Brass. Replacement sensors and various lengths of D-Sub conductor cables are also available. A wall power supply supporting 100-240 V AC is offered.

Description
The Televac® MX7B Active Gauge uses a cleanable 7B Penning magnetron cold cathode and offers a wide measurement range, digital communications, and a bright OLED display. It is designed for ease of use and sensor cleaning, making it suitable for various vacuum applications.

Applications and Industries
The gauge is ideal for heat treatment, vacuum furnaces, and thin film deposition processes.

Benefits
The MX7B offers a low-cost, compact design with reliable technology and easy maintenance. It is backed by excellent customer service and rapid calibration services.

Ratings and Compliance
The device is certified to UL 61010-1, CE, CAN/CSA, EAC, and is RoHS compliant.

Electrical Connections
The gauge features a 15-pin connection layout for various outputs and controls, including analog output, RS-485 communication, and supply voltage connections.

Set Points
Set point 1 is an N-Channel MOSFET open collector with a maximum current of 1 A. Set point 2 is a relay with a maximum switching voltage of 220 V DC and a current of 2 A.

Physical Characteristics
The enclosure is made of aluminum, with a total weight of 1 kg with the sensor. Materials exposed to vacuum include brass, stainless steel, and other durable materials.

Company Information
Televac, part of The Fredericks Company, has over 80 years of experience in vacuum measurement products, offering reliable and competitively priced solutions with a focus on customer satisfaction and fast service.

Catalog excerpts

Televac MX7B Cold Cathode Ionization Active Gauge-1

Operating Range 1x10-8 Torr to 1x10-3 Torr Display OLED Digital Communications RS-485, USB (micro) Analog Output Configurable 0 to 10 V DC Set Point 1 Open collector Calibration Medium Dry air or nitrogen Digital Output Resolution 3 significant digits with exponent Analog Output Resolution 16-bits Accuracy 1x10-7 to 1x10-3 Torr ±30% of reading Analog Output ±10 mV Display Readable Distance 3 m (10 ft) Ordering Information MX7B Active Gauge Part Number NW25 (DN25 ISO-KF) Stainless Steel 2-8940-KF25 Replacement Sensors Part Number NW25 (DN25 ISO-KF) Stainless Steel 2-2171-KF25 D-Sub 6 Conductor Cable (flying leads) 20 ft (6 m) 50 ft (15 m) 100 ft (30 m) The Televac® MX7B Active Gauge utilizes a cleanable 7B Penning magnetron cold cathode. It has a variety of features including a wide range of measurement from 10-8 to 10-3 Torr, RS-485 digital communications, a micro-USB port, two programmable set points, a configurable analog output, and a bright color OLED display. The unit also features 4 capacitive touch controls, making all features accessible through the display. The selection of fittings, simiplicity of use, ease of sensor cleaning, and low cost of the MX7B make it an excellent choice for a variety of vacuum applications and industries. This gauge is designed for use with the MX2A and MX4A active gauges to provide full range vacuum measurement from 10-8 to 10-3 Torr. Applications and Industries D-Sub 15 Conductor Cable (flying leads) 20 ft (6 m) 50 ft (15 m) 100 ft (30 m) Custom lengths Wall Power Supply Part Number • Heat treatment and vacuum furnaces • Thin film deposition and coating processes Visit our website at www.frederickscompany.com for a full list of applications. Name Operating Range Part Number MX2A 1x10-4 to 1000 Torr 2-8910-1XX • Low cost with a compact design and color OLED display • Reliable Penning magnetron cold cathode technology • Easily cleaned for extended sensor lifetime • Excellent customer service and support • Rapid turn-around for calibration and service • Designed and manufactured in the USA • Certified to UL 61010-1 • CE certified to EN 61010-1, EN 61236-1, EN 55011 • Certified to CAN/CSA C22.2 No. 61010-1-12 • EAC certified • RoHS Compliant • IP40 When combined with the MX2A or MX4A, the MX7B will provide full range vacuum measurement from 10-8 to 1000 Torr. This is an optimal solution for heat treat and vacuum furnaces where calibration frequency requirements vary between rough vacuum (MX2A and MX4A) and high vacuum (MX7B) gauges. Visit the Televac website at www.frederickscompany.com for a full list of products.

Open the catalog to page 1

Televac MX7B Cold Cathode Ionization Active Gauge-2

Electrical Connections Materials Exposed to Vacuum Analog Output (Ground) Analog Output (0-10V) RS-485 A(-) RS-485 B(+) $P2 NC SP2 Com SP2 NO SP1 Source SPlOpen Drain Sensor Voltage Control (Ground) Do Not Connect Sensor Voltage Control (+) Do Not Connect Supply Voltage (Ground) Supply Voltage (24V) 1 Analog Output (Ground) 2 RS-485 A (-) 13 Sensor Voltage Control (Ground) 14 Sensor Voltage Control (+) 15 Supply Voltage (Ground) The MX7B has two set points. Set point 1 is an N-Channel 60 V MOSFET open collector. It has a maximum current rating of 1 A. The data sheet can be found here: www.vishay.com/docs/69958/si2308bd.pdf...

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