MX4A Convection Active Vacuum Gauge
Part Number: 2-8930-1XX
Operating Specifications
Operating Range
Display
Digital Communications
Analog Output
Programmable Set Points
Set Point 1
Set Point 2
Supply Voltage
Maximum Power
Calibration Medium
Overpressure
Digital Output Resolution
Analog Output Resolution
Operating Temperature
Storage Temperature
Bakeout Temperature
Brass (PN: -110, -116, -125)
Stainless (PN: All Others)
Response Time
Accuracy (Vertical Mount)
0.1 mTorr to 1 mTorr
1 mTorr to 10 mTorr
10 mTorr to 1000 Torr
Analog Output
Display Readable Distance
1x10-4 Torr to 1000 Torr
OLED
RS-485
Selectable 0 V DC to 10 V DC
2
Open collector
Relay
22 V DC to 26 V DC
8W
Dry air or nitrogen
150 PSI
2 significant digits with exponent
16-bits
0 °C to 50 °C
-20 °C to 60 °C
100 °C (electronics removed)
200 °C (electronics removed)
≤2s
0.1 mTorr resolution
±1 mTorr
±10% of reading
±10 mV
3 m (10 ft)
Description
The Televac® MX4A Active Gauge utilizes an easily replaceable (no
screws) Televac 4A convection vacuum sensor. It has a variety of features including a wide range of measurement from 10-4 Torr to 1000
Torr, RS-485 communications, two programmable set points, and a selectable analog output. The bright, color OLED display included on every
unit makes it easy to read from a distance and allows settings and calibration to be adjusted at the unit without any additional equipment.
Options can be set from four capacitive touch controls located on the
top of the unit or through RS-485 communications. The extensive selection of fittings, simplicity of use, ease of sensor replacement, and low
cost make this unit an excellent choice for a variety of vacuum applications.
Physical Characteristics
Housing
Electrical Connections
Weight with Sensor (typical)
Weight without Sensor (typical)
Dimensions
Aluminum
D-Sub 15-pin male
350 g (0.77 lbs)
200 g (0.44 lbs)
See dimensional drawings
Sample RS-485 Commands (assume default address 0)
*0S1
*0R1
*0R2
*0W10001
*0W10002
*0W10003
Read vacuum
Read units
Read SP1L and SP1H
Set units to Pascal
Set units to Torr
Set units to millibar
Applications
Heat treatment and vacuum furnaces
Thin film deposition and coating processes
Cryogenics
Pharmaceutical product processes
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•
•
•
Visit the Televac website at www.frederickscompany.com for a full
list of applications.
Analog Output Behavior
A full list of commands can be found in the MX4A manual.
Benefits
•
•
•
•
Simple sensor replacement - no screws to remove
Low cost with a compact design and color OLED display
Excellent accuracy of measurements
Exceptional customer service and support
Ratings and Compliance
•
•
•
•
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CE certified to EN 61010-1, EN 61236-1, EN 55011
Certified to CAN/CSA C22.2 No. 61010-1-12
RoHS compliant
EAC certified
IP40
www.frederickscompany.com
sales@frederickscompany.com
+1 215 947 2500
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MX4A Convection Active Vacuum Gauge
Part Number: 2-8930-1XX
Electrical Connections
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Dimensional Drawings
Description
Analog Out (Ground)
RS-485 A (-)
SP2 NC
SP2 NO
SP1 Open Drain
Floating
Floating
Supply Voltage (+)
Analog Out (0 to 10) V
RS-485 B (+)
SP2 Com
SP1 Source
Floating
Floating
Supply Voltage (-)
Materials Exposed to Vacuum
MX4A PN: 2-8930-110, -116, -125
Nickel
Glass
Gold
Tophet
Cupron
Solder
MX4A PN: All Others
Nickel
Glass
Gold
Tophet
Cupron
Stainless Steel
Set Points
The MX4A 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 data sheet
can be found at www.vishay.com/docs/69958/si2308bd.pdf. 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 data sheet can be found
at www.te.com/catalog/pn/en/1393788-3.
Replacement Sensors and Related Products
4A Nickel Plated Brass Sensor
1/8” NPT
NW16 (DN16 ISO-KF)
NW25 (DN25 ISO-KF)
Part Number
2-2119-010
2-2119-016
2-2119-025
4A Stainless Steel Sensor
1/8” NPT
1/2” Straight
NW16 (DN16 ISO-KF)
NW25 (DN25 ISO-KF)
NW40 (DN40 ISO-KF)
1.33” CF (DN16 ISO-CF-F)
2.75” CF (DN40 ISO-CF-F)
Part Number
2-2120-001
2-2120-011
2-2120-030
2-2120-031
2-2120-032
2-2120-050
2-2120-052
Ordering Information
MX4A Active Gauge
1/8” NPT Stainless Steel
1/8” NPT Nickel Plated Brass
1/2” Straight Stainless Steel
NW16 (DN16 ISO-KF) Nickel Plated Brass
NW16 (DN16 ISO-KF) Stainless Steel
NW25 (DN25 ISO-KF) Nickel Plated Brass
NW25 (DN25 ISO-KF) Stainless Steel
NW40 (DN40 ISO-KF) Stainless Steel
1.33” CF (DN16 ISO-CF-F) Stainless Steel
2.75” CF (DN40 ISO-CF-F) Stainless Steel
VCR and VCO available upon request
Part Number
2-8930-101
2-8930-110
2-8930-111
2-8930-116
2-8930-130
2-8930-125
2-8930-131
2-8930-132
2-8930-150
2-8930-152
D-Sub 6 Conductor Cable (flying leads)
20 ft (6 m)
50 ft (15 m)
100 ft (30 m)
Part Number
2-9857-020
2-9857-050
2-9857-100
D-Sub 15 Conductor Cable (flying leads)
20 ft (6 m)
50 ft (15 m)
100 ft (30 m)
Part Number
2-9858-020
2-9858-050
2-9858-100
Wall Power Supply
100-240 V AC/47-63 Hz, plug types A, C, G, I
Part Number
2-7900-097
Contact Us
Televac - The Fredericks Company
2400 Philmont Avenue
Huntingdon Valley, PA 19006
MP7ER Active Gauge - This gauge measures high vacuum from 10-8 to 10-2
Torr. Combining it with the MX4A provides a full range (ATM to UHV, 10-8 to
1000 Torr) active gauge measurement solution optimal for heat treat and vacuum furnace applications.
Visit the Televac website at www.frederickscompany.com for a full list of products.
www.frederickscompany.com
web: www.frederickscompany.com
email: sales@frederickscompany.com
tel: +1 215 947 2500
Disclaimer: Specifications subject to change without notice. The Fredericks Company assumes no responsibility for inaccuracies in product specifications or any liability arising from product use.
© 2020 The Fredericks Company
sales@frederickscompany.com
+1 215 947 2500
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