Table of Contents
Advertisement
Quick Links
MX7B Cold Cathode Ionization Gauge
Instruction Manual
Rev E
© 2022 Televac® - The Fredericks Company
2400 Philmont Avenue
Huntingdon Valley, PA 19006
web:
www.frederickscompany.com
email:
sales@frederickscompany.com
tel: +1 215 947 2500
fax: +1 215 947 7464
1
23
©2022 Televac® - The Fredericks Company | www.televac.com | sales@televac.com | +1 215 947 2500
mx7b_im rev E Page
of
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for TELEVAC MX7B
Summary of Contents for TELEVAC MX7B
- Page 1 2400 Philmont Avenue Huntingdon Valley, PA 19006 web: www.frederickscompany.com email: sales@frederickscompany.com tel: +1 215 947 2500 fax: +1 215 947 7464 ©2022 Televac® - The Fredericks Company | www.televac.com | sales@televac.com | +1 215 947 2500 mx7b_im rev E Page...
-
Page 2: Table Of Contents
RS-485 Command Examples ........................22 USB Sample Commands ........................... 22 RS-485 and USB Communications Error Codes ..................23 Firmware Updates ............................ 23 ©2022 Televac® - The Fredericks Company | www.televac.com | sales@televac.com | +1 215 947 2500 mx7b_im rev E Page... -
Page 3: Introduction
The MX7B has 2 set points, one relay and one open collector, and a selectable analog output option. The analog output is a configurable 0-10 V output that includes options for linear, linear-by- decade, and logarithmic formats. -
Page 4: Dimensions
1.4 Dimensions ©2022 Televac® - The Fredericks Company | www.televac.com | sales@televac.com | +1 215 947 2500 mx7b_im rev E Page... -
Page 5: Safety Information
2.1.4 The MX7B has voltages up to 3000 volts. As such, it represents a shock hazard and should be handled with caution. Any disassembly of the gauge should be carried out by a trained professional and with the power disconnected. -
Page 6: Quick Start Guide
3.5 Power down the MX7B 3.5.1 Power down the MX7B, and install it on a vacuum stand for use. ©2022 Televac® - The Fredericks Company | www.televac.com | sales@televac.com | +1 215 947 2500 mx7b_im rev E Page... -
Page 7: Set Up
7B sensor close to the area where vacuum measurement is desired is preferred to increase the accuracy. Each 7B sensor has a key that only allows for the MX7B to mate with the sensor in the proper orientation. Rotate the MX7B until the correct alignment is obtained and the MX7B is able to slide onto the 7B sensor. -
Page 8: Menu Navigation
RS-485 or USB communications. To navigate the menu simply use the buttons found on top of the MX7B. The four buttons include the SEL button, an UP arrow, a DOWN arrow, and an ENT button. Using the SEL button allows the operator to change between menu categories. -
Page 9: Menu Structure
5.2.6.2 Linear by Decade 5.2.6.3 Logarithmic 5.2.6.3.1 10 V Pressure 5.2.6.3.2 0 V Pressure 5.2.6.4 RS-485 Output 5.2.6.4.1 Address 5.2.6.4.2 Baud Rate ©2022 Televac® - The Fredericks Company | www.televac.com | sales@televac.com | +1 215 947 2500 mx7b_im rev E Page... -
Page 10: Explanation Of Menu Items And Navigation
The system settings menu contains the ability to change the measurement units, apply a gas correction factor, change the digital resolution to display an extra digit, and set the Vsense Control method for the unit. There is also a diagnostic screen for use by Televac® service representatives to troubleshoot the unit. - Page 11 Gas Type 6.3.3 6.3.3.1 The MX7B is an indirect pressure sensor and its accuracy will be affected by the presence of gases other than nitrogen. The MX7B has the ability to apply correction factors for six pre-defined gases: hydrogen, helium, neon, argon, krypton, and carbon dioxide.
-
Page 12: Calibration
6.4 Calibration 6.4.1 To ensure that the unit always displays with the most accuracy, the MX7B includes a number of operator-configurable calibration points. While the MX7B is factory calibrated, the use of the included calibration points may become necessary after extended use, contamination, etc. If accuracy is critical, it is recommended to return the sensor to Televac®... -
Page 13: Set Points
6.5 Set Points 6.5.1 The MX7B contains two set points for the convenience of the operator. 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 at www.vishay.com/docs/69958/si2308bds.pdf. -
Page 14: Analog Output
Decade, and Linear. 7.2 Linear 7.2.1 The Linear output covers a select range of the MX7B with a linear scale. The 10 Volt or full-scale value of the output can be selected from the following values: 1*10 Torr, 1*10 Torr, or 1*10 −5... -
Page 15: Logarithmic
0 V exponent selection screen. Press ENT to unlock the screen and the UP or DOWN arrow to select the 0 V value. ©2022 Televac® - The Fredericks Company | www.televac.com | sales@televac.com | +1 215 947 2500 mx7b_im rev E Page... -
Page 16: Cleaning The Mx7B Sensor
If properly cleaned and assembled, the sensor is ready for use without re-calibration unless NIST traceable calibration is required. Description Part Number MX7B anode assembly 2-7900-707 ©2022 Televac® - The Fredericks Company | www.televac.com | sales@televac.com | +1 215 947 2500 mx7b_im rev E Page... -
Page 17: Rs-485 And Usb Communications
To communicate with the MX7B via USB, the user must have a USB capable device to send commands to the MX7B. Each command must be preceded by a * and will be an S, R, W, RC, or WC. Because USB is a serial bus, the unit address is omitted from commands. See the Communications Specifications heading for information on what settings are necessary to properly communicate with the MX7B. -
Page 18: Rs-485 And Usb Command List
1 = menu control 2 = pin control Read high voltage state, where x is: 0 = off 1 = on ©2022 Televac® - The Fredericks Company | www.televac.com | sales@televac.com | +1 215 947 2500 mx7b_im rev E Page... - Page 19 2 = pin control W10x Set high voltage state, where x is: 0 = off 1 = on Response is new high voltage setting. ©2022 Televac® - The Fredericks Company | www.televac.com | sales@televac.com | +1 215 947 2500 mx7b_im rev E Page...
- Page 20 2 = pin control W10x Set high voltage state, where x is: 0 = off 1 = on Response is new high voltage setting. ©2022 Televac® - The Fredericks Company | www.televac.com | sales@televac.com | +1 215 947 2500 mx7b_im rev E Page...
- Page 21 Read RS-485 address, where x is 0 to F C2xx Set RS-485 address, where x is 0 to F Return new value before changing ©2022 Televac® - The Fredericks Company | www.televac.com | sales@televac.com | +1 215 947 2500 mx7b_im rev E Page...
-
Page 22: Rs-485 Command Examples
1E-5 Torr Adjustment is Baaa, reading is PPSEE WC3Baaa<CR> PPSEE 1E-4 Torr Adjustment is Baaa, reading is PPSEE WC4Baaa<CR> PPSEE 1E-3 Torr Adjustment is Baaa, reading is PPSEE ©2022 Televac® - The Fredericks Company | www.televac.com | sales@televac.com | +1 215 947 2500 mx7b_im rev E Page... -
Page 23: Rs-485 And Usb Communications Error Codes
9.8 Firmware Updates 9.8.1 The MX7B has the ability to update the firmware when in the field over the USB communications. For more information on updating the firmware, please contact sales@frederickscompany.com. ©2022 Televac® - The Fredericks Company | www.televac.com | sales@televac.com | +1 215 947 2500...
Need help?
Do you have a question about the MX7B and is the answer not in the manual?
Questions and answers