Televac® MX7B Cold Cathode Ionization Gauge

Part Numbers: 2-8940-NPT, 2-8940-100, 2-8940-125, 2-8940-KF25


Compatible With: MX Active Gauge EthernetIP Gateway


Features and Benefits:

  • Highly contamination resistant cold cathode ionization gauge design
  • Compact design
  • Color OLED display
  • Configurable 0 to 10 V analog output
  • Set point relay and open connector for process control
  • RS-485 and USB communications standard
  • EthernetIP communications available via the MX Active Gauge EIP Gateway
  • Easily cleaned Penning ionization gauge for extended sensor lifetime
  • ISO 17025 accredited and NIST traceable calibrations optional
  • Rapid turn-around for calibration and service

The Televac® MX7B is an active vacuum gauge (also called an analog vacuum gauge or a digital vacuum gauge) featuring the well-known Televac® 7B cold cathode ionization gauge. This gauge

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MX7B Cold Cathode Active Vacuum Gauge

Product Description
Price
Calibration
Quantity
3/4” NPT Brass
3/4” NPT Brass
PN: 2-8940-NPT
$1,625.00

  • 1x MX7B Cold Cathode
    $1,625.00
  • Subtotal $1,625.00

1
1" Straight Brass
PN: 2-8940-100
$1,625.00

  • 1x MX7B Cold Cathode
    $1,625.00
  • Subtotal $1,625.00

  • 1x MX7B Cold Cathode
    $1,625.00
  • Subtotal $1,625.00

  • 1x MX7B Cold Cathode
    $1,625.00
  • Subtotal $1,625.00

1 1/4
1 1/4" (1.25”) Straight Brass
PN: 2-8940-125
$1,625.00

  • 1x MX7B Cold Cathode
    $1,625.00
  • Subtotal $1,625.00

  • 1x MX7B Cold Cathode
    $1,625.00
  • Subtotal $1,625.00

  • 1x MX7B Cold Cathode
    $1,625.00
  • Subtotal $1,625.00

  • 1x MX7B Cold Cathode
    $1,625.00
  • Subtotal $1,625.00

NW25/KF25 Stainless Steel
NW25/KF25 Stainless Steel
PN: 2-8940-KF25
$1,640.00

  • 1x MX7B Cold Cathode
    $1,640.00
  • Subtotal $1,640.00

  • 1x MX7B Cold Cathode
    $1,640.00
  • Subtotal $1,640.00

  • 1x MX7B Cold Cathode
    $1,640.00
  • Subtotal $1,640.00

  • 1x MX7B Cold Cathode
    $1,640.00
  • Subtotal $1,640.00

  • 1x MX7B Cold Cathode
    $1,640.00
  • Subtotal $1,640.00

D-Sub 15, 15 Conductor Cables (Flying Leads)

Product Description
Price
Quantity
10′ D-Sub 15, 15 Conductor Cable (Flying Leads)
10′ D-Sub 15, 15 Conductor Cable (Flying Leads)
PN: 2-9858-010
$305.00
20′ D-Sub 15, 15 Conductor Cable (Flying Leads)
20′ D-Sub 15, 15 Conductor Cable (Flying Leads)
PN: 2-9858-020
$390.00
35′ D-Sub 15, 15 Conductor Cable (Flying Leads)
35′ D-Sub 15, 15 Conductor Cable (Flying Leads)
PN: 2-9858-035
$625.00
50′ D-Sub 15, 15 Conductor Cable (Flying Leads)
50′ D-Sub 15, 15 Conductor Cable (Flying Leads)
PN: 2-9858-050
$760.00
65′ D-Sub 15, 15 Conductor Cable (Flying Leads)
65′ D-Sub 15, 15 Conductor Cable (Flying Leads)
PN: 2-9858-065
$885.00
100′ D-Sub 15, 15 Conductor Cable (Flying Leads)
100′ D-Sub 15, 15 Conductor Cable (Flying Leads)
PN: 2-9858-100
$1,355.00

D-Sub 15, 6 Conductor Cables (Flying Leads)

Product Description
Price
Quantity
20’ D-Sub 15, 6 Conductor Cable (Flying Leads)
20’ D-Sub 15, 6 Conductor Cable (Flying Leads)
PN: 2-9873-020
$180.00
50’ D-Sub 15, 6 Conductor Cable (Flying Leads)
50’ D-Sub 15, 6 Conductor Cable (Flying Leads)
PN: 2-9873-050
$220.00
100’ D-Sub 15, 6 Conductor Cable (Flying Leads)
100’ D-Sub 15, 6 Conductor Cable (Flying Leads)
PN: 2-9873-100
$310.00

Wall Power Supply

Product Description
Price
Quantity
100-240 V AC/47-63 Hz, Plug Types A, C, G, I
100-240 V AC/47-63 Hz, Plug Types A, C, G, I
PN: 2-7900-097
$160.00

Replacement Sensors and Parts

Product Description
Price
Quantity
3/4” NPT Brass Replacement Gauge for MX7B
3/4” NPT Brass Replacement Gauge for MX7B
PN: 2-2171-NPT
$670.00
1
1" Straight Brass Replacement Gauge for MX7B
PN: 2-2171-100
$670.00
1 1/4
1 1/4" (1.25”) Straight Brass Replacement Gauge for MX7B
PN: 2-2171-125
$670.00
NW25/KF25 Stainless Steel Replacement Gauge for MX7B
NW25/KF25 Stainless Steel Replacement Gauge for MX7B
PN: 2-2171-KF25
$675.00
Anode Assembly
Anode Assembly
PN: 2-7900-707
$160.00
O-Ring
O-Ring
PN: 1-4210-50 (MX7B)
$4.50
Operating Range 1*10-8 Torr to 1*10-3 Torr
Display OLED
Digital Communications RS-485, USB (micro)
Analog Output Configurable 0 to 10 V DC
Programmable Set Points 2
Set Point 1 Open collector
Set Point 2 Relay
Supply Voltage 22 V DC to 26 V DC
Maximum Power 8 W
Calibration Medium Dry air or nitrogen
Overpressure 150 PSI
Digital Output Resolution 3 significant digits with exponent
Analog Output Resolution 16 bits
Operating Temperature 0 °C to 50 °C
Storage Temperature -20 °C to 60 °C
Bakeout Temperature 120 °C
Response Time ≤150 ms
Display Readable Distance 3 m (10 ft)
Accuracy  
1*10-7 to 1*10-3 Torr ±30% of reading
Analog Output ±10 mV
Pin Description
1 Analog Out (Ground)
2 RS-485 A (-)
3 SP2 NC
4 SP2 NO
5 SP1 Open Drain
6 Do not connect
7 Do not connect
8 Supply Voltage (+)
9 Analog Out (0 to 10) V
10 RS-485 B (+)
11 SP2 Com
12 SP1 Source
13 Sensor Voltage Control (Ground)
14 Sensor Voltage Control (+)
15 Supply Voltage (Ground)
Electrical connections diagram (pin diagram) for the Televac® MX7B Cold Cathode Active Vacuum Gauge.

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 datasheet can be found at www.vishay.com/en/product/69958.

Set point 2 is a relay with a maximum switching voltage of 220 V DC (250 V AC) and a maximum switching current of 2 A. The datasheet can be found at www.te.com/catalog/pn/en/1393788-3.

Brass
Stainless Steel
Tophet
Kovar
Ceramic
Glass
Fluoropolymer Elastomer
Nickel
Solder
Housing Aluminum
Weight with Sensor 1 kg (2 lbs)
Weight without Sensor 0.3 kg (0.6 lbs)
Dimensional drawing of the Televac® MX7B Cold Cathode Active Vacuum Gauge.
Certified to CAN/CSA C22.2 No. 61010-1-12
CE certified to EN 61010-1, EN 61236-1, EN 55011
RoHS compliant
IP40
EAC certified
ISO 17025 accredited calibration optional
NIST traceable calibration optional
Quantity Discount
1 List
5 2%
10 5%
15 7%
20 10%
25 13%
30+ 15%

D-Sub 15 Cable Quantity Discounts

Quantity Discount
1 List
50 5%
75 10%
100+ 15%

All-in-one sensor, controls, and display

Televac® active gauges (analog vacuum gauges and digital vacuum gauges) feature an easy to read OLED display with four capacitive touch controls, allowing users to interface

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