MX4A Convection (Pirani) Active Vacuum Gauge

Part Number: 2-8930-1XX

The Televac MX4A Active Vacuum Gauge (also called a convection gauge, analog vacuum gauge, digital vacuum gauge, or Pirani gauge) utilizes an easily replaceable Televac 4A convection 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.

 

The Televac MX4A Convection Gauge (Pirani) Features

  • 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
  • Excellent customer support for vacuum gauges
  • Designed and manufactured in the United States of America
Operating Range 1×10-4 Torr to 1000 Torr
Communications RS-485
Analog Output 7 selectable 0 V to 10 V
Programmable Set Points 2
Set Point 1 Open collector
Set Point 2 Relay
Supply Voltage 22 V 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
Storage Temperature -20 °C to 60 °C
Bakeout Temperature
Brass (P/N: 2-8910-110) 100 °C (electronics removed)
Stainless (P/N: All Others 200 °C (electronics removed)
Response Time ≤ 1 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 10 Torr ±10% of reading
Analog Output ±5 mV

Analog Output Behavior

Televac vacuum gauge convection gauge pirani vacuum transducer
MX4A Active Gauge Part Number
1/8” NPT Stainless Steel 2-8930-101
1/8” NPT Nickel Plated Brass 2-8930-110
1/2” Straight Stainless Steel 2-8930-111
NW16 (DN16 ISO-KF) Nickel Plated Brass 2-8930-116
NW16 (DN16 ISO-KF) Stainless Steel 2-8930-130
NW25 (DN25 ISO-KF) Nickel Plated Brass 2-8930-125
NW25 (DN25 ISO-KF) Stainless Steel 2-8930-131
NW40 (DN40 ISO-KF) Stainless Steel 2-8930-132
1.33” CF (DN16 ISO-CF-F) Stainless Steel 2-8930-150
2.75” CF (DN40 ISO-CF-F) Stainless Steel 2-8930-152
VCR and VCO available upon request
D-Sub 6 Conductor Cable (flying leads) Part Number
20 ft (6 m) 2-9857-020
50 ft (15 m) 2-9857-050
100 ft (30 m) 2-9857-100
D-Sub 15 Conductor Cable (flying leads) Part Number
20 ft (6 m) 2-9858-020
50 ft (15 m) 2-9858-050
100 ft (30 m) 2-9858-100
Wall Power Supply Part Number
100-240 V AC/47-63 Hz, plug types A, C, G, I 2-7900-097

CC-10 Active Vacuum Gauge – This gauge utilizes dual-sensor technology to replace multiple conventional vacuum gauges, permitting seamless measurement of twelve decades of pressure. It has a variety of features including a wide range of measurement from 1 × 10-9 Torr up to 1000 Torr, RS-485 communications, three programmable set points, and a selectable analog output. The bright LED display makes it easy to read from a distance. Options can be set from either four touch controls located on the front of the unit or through RS-485 communications. The simplicity of use and wide measurement range make this unit an excellent choice for a variety of vacuum applications.

MP7ER Active Gauge – This gauge measures high vacuum from 1 × 10-8 Torr up to 1 × 10-2 Torr utilizing a double inverted magnetron sensor. It has a linear or logarithmic 0 F to 10 V analog output with a relay set point and an LED display of pressure.