MX4A Active Convection Digital Vacuum Gauge (Pirani)

Part Number: 2-8930-1XX

The Televac MX4A Active Vacuum Gauge (also called a convection vacuum gauge, analog vacuum gauge, digital vacuum gauge, convectron, or Pirani gauge) utilizes an easily replaceable Televac 4A convection vacuum gauge. This digital 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 0 to 10 V DC 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.


Televac MX4A Convection Digital Vacuum Gauge (Pirani) Features

  • Low cost digital vacuum gauge
  • Very compact digital 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
  • Excellent customer support for vacuum gauges
MX4A Active GaugePart NumberPriceBuy
1/8” NPT Stainless Steel2-8930-101$580.00

1/8” NPT Nickel Plated Brass2-8930-110$500.00

1/2” Straight Stainless Steel2-8930-111$580.00

NW16 (DN16 ISO-KF) Nickel Plated Brass2-8930-116$550.00

NW16 (DN16 ISO-KF) Stainless Steel2-8930-130$585.00

NW25 (DN25 ISO-KF) Nickel Plated Brass2-8930-125$550.00

NW25 (DN25 ISO-KF) Stainless Steel2-8930-131$585.00

NW40 (DN40 ISO-KF) Stainless Steel2-8930-132$590.00

1.33” CF (DN16 ISO-CF-F) Stainless Steel2-8930-150$590.00

2.75” CF (DN40 ISO-CF-F) Stainless Steel2-8930-152$595.00

D-Sub 6 Conductor CablePart NumberPriceBuy
10’ flying leads 6 conductor2-9857-010$100.00
20’ flying leads 6 conductor2-9857-020$115.00
35’ flying leads 6 conductor2-9857-035$140.00
50’ flying leads 6 conductor2-9857-050$160.00
65’ flying leads 6 conductor2-9857-065$190.00
100’ flying leads 6 conductor2-9857-100$215.00
D-Sub 15 Conductor CablePart NumberPriceBuy
10′ flying leads 15 conductor2-9858-010$250.00
20′ flying leads 15 conductor2-9858-020$325.00
35′ flying leads 15 conductor2-9858-035$520.00
50′ flying leads 15 conductor2-9858-050$630.00
65′ flying leads 15 conductor2-9858-065$740.00
100′ flying leads 15 conductor2-9858-100$1,135.00
Wall Power SupplyPart NumberPriceBuy
100-240 V AC/47-63 Hz, plug types A, C, G, I2-7900-097$120.00
Operating Range1*10-4 Torr to 1000 Torr
Analog Output7 selectable 0 V to 10 V
Programmable Set Points2
Set Point 1Open collector
Set Point 2Relay
Supply Voltage22 V to 26 V DC
Maximum Power8 W
Calibration MediumDry air or nitrogen
Overpressure150 psi
Digital Output Resolution2 significant digits with exponent
Analog Output Resolution16 bits
Operating Temperature0 °C to 50 °C
Storage Temperature-20 °C to 60 °C
Bakeout Temperature
Brass (P/N: 2-8910-110)100 °C (electronics removed)
Stainless (P/N: All Others200 °C (electronics removed)
Response Time≤ 1 s
Display Readable Distance3 m (10 ft)
0.1 mTorr to 1 mTorr0.1 mTorr resolution
1 mTorr to 10 mTorr±1 mTorr
10 mTorr to 1000 Torr±10% of reading
Analog Output±5 mV

Analog Output Behavior

Televac vacuum gauge convection gauge pirani vacuum transducer
MX7B Cold CathodeMX7M Cold CathodeCC-10 Wide RangeMX Active Gauge

EthernetIP Gateway

Measurement Range1*10-8 to 1*10-3 Torr5*10-11 to 1*10-2 Torr1*10-9 to 1000 Torr5*10-11 to 10,000 Torr
Analog OutputConfigurable 0 to 10 V DCConfigurable 0 to 10 V DCConfigurable 0 to 10 V DCNone
Programmable Set Points223 relaysNone
EthernetIP AvailableYesYesNoYes