Part Numbers: 2-8910-101, 2-8910-110, 2-8910-111, 2-8910-116, 2-8910-130, 2-8910-125, 2-8910-131, 2-8910-132, 2-8910-150, 2-8910-152
Compatible With: MX Active Gauge EthernetIP Gateway
Features and Benefits:
- Low cost vacuum gauge
- Very compact vacuum gauge
- Easy-to-read color OLED digital vacuum gauge display
- Excellent resolution and repeatability convection gauge (Pirani)
- Superior unit-to-unit performance between vacuum gauges
- ISO 17025 accredited and NIST-traceable calibrations optional
- Excellent customer support for vacuum gauges
The Televac® MX2A Active Vacuum Gauge (also called a thermocouple vacuum gauge, analog or digital vacuum gauge, or Pirani gauge) utilizes an easily replaceable Televac® 2A thermocouple vacuum gauge. This vacuum gauge has a variety of features, including a pressure measurement range from 1*10-4 Torr up to 1000 Torr, RS-485 communications, two programmable set points, and a selectable analog vacuum gauge output.
The bright OLED digital vacuum gauge display makes it easy to read from a distance. Options on this Pirani gauge can be set from four touch controls on the top of the unit or through RS-485 communications (or EthernetIP if you add in an EthernetIP gateway). This vacuum gauge offers an extensive selection of fittings, simple use, ease of sensor replacement, and low cost, making it an excellent choice for a variety of vacuum applications.
MX2A Thermocouple Active Vacuum Gauge
D-Sub 15, 15 Conductor Cables (Flying Leads)
D-Sub 15, 6 Conductor Cables (Flying Leads)
Wall Power Supply
| Operating Range | 1*10-4 Torr to 1000 Torr |
| Communications | RS-485 |
| Analog Output | 7 selectable 0 V DC 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 | 2 significant digits with exponent |
| Analog Output Resolution | 16 bits |
| Operating Temperature | 0 °C to 50 °C |
| Bakeout Temperature | |
| Brass (PN: 2-8910-110) | 100 °C (electronics removed) |
| Stainless Steel (PN: All Others) | 200 °C (electronics removed) |
| Response Time | ≤2 s |
| Display Readable Distance | 3 m (10 ft) |
| Accuracy | |
| 0.1 mTorr to 1 mTorr | 0.1 mTorr resolution |
| 1 mTorr to 10 mTorr | ±1 mTorr |
| 10 mTorr to 1 Torr | ±10% of reading |
| 1 Torr to 100 Torr | ±30 of reading (vertical mount) |
| 100 Torr to 1000 Torr | ±10% of reading (vertical mount) |
| 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 | Floating |
| 7 | Floating |
| 8 | Supply Voltage (0 to 10) V |
| 9 | Analog Out (0 to 10) V |
| 10 | RS-485 B (+) |
| 11 | SP2 Com |
| 12 | SP1 Source |
| 13 | Floating |
| 14 | Floating |
| 15 | Supply Voltage (-) |
| *0S1<CR> | Read vacuum measurement |
| *0R1<CR> | Read units of measurement |
| *0R2<CR> | Read SP1L and SP1H |
Assume address 0
Full list of commands is available in the instruction manual.
The MX2A 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.
| MX2A PN: -110, -116, -125 | MX2A PN: All Others |
| Nickel | Nickel |
| Glass | Glass |
| Gold | Gold |
| Tophet | Tophet |
| Cupron | Cupron |
| Solder | Stainless Steel |
| Housing | Aluminum |
| Electrical Connections | D-Sub 15-pin male |
| Weight with Sensor (typical) | 345 g (0.76 lbs) |
| Weight without Sensor | 181 g (0.40 lbs) |
| 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 |
Product Documentation
| MX2A Datasheet |
| MX2A Instruction Manual |
| Televac®️ Vacuum Calibration Tolerances |
3D Models (STEP Files)
| 2-8910-101 – MX2A 1/8″ NPT Stainless Steel |
| 2-8910-110 – MX2A 1/8″ NPT Nickel-Plated Brass |
| 2-8910-116 – MX2A NW16/KF16 Nickel-Plated Brass |
| 2-8910-130 – MX2A NW16/KF16 Stainless Steel |
Application Notes
Videos
| MX2A Product Overview Video |
| MX2A Demonstration Video |
| MX2A Sensor Replacement Video |
Tools
| Televac® Vacuum Measurement Converter |
Brochures
MX2A Thermocouple Active Vacuum
Gauge Quantity Discounts
| 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% |