Instruction Manual
MX2A Active Thermocouple Gauge
ACCESSORIES – Do not use accessories not recommended in this manual as they may require a
technician to restore the product to its normal operation.
The MX2A qualifies as a Safety Extra-Low Voltage (SELV) device. As such, it represents little to no
hazard concerning electrical shock or burns.
Do not substitute parts or modify instrument. Because of the danger of introducing addi-
tional hazards, do not install substitute parts or perform any unauthorized modifications
to the product. Return the product to Televac for service and repair to ensure that safety
features are maintained. Do not use this product if it has unauthorized modifications.
The MX2A is not designed to be serviced by the operator. Any service should be done by a Tele-
vac technician. However, in the event of any attempt to service the unit, please remove the power
supply to minimize the risk of harm.
The 2A sensor is user-replaceable and additional 2A sensors can be ordered from Televac by the
operator. Do not attempt to use other sensors with the MX2A remote. Using another sensor may
result in damage to the MX2A and voids any warranty in place.
2
Setup
2.1
Installation
Each MX2A is designed to be used in conjunction with a 2A sensor. The 2A sensor can be mounted in
any orientation for accurate measurement up to 10 Torr. For measurements up to atmosphere, mount
the 2A sensor in an upright position. The sensor should be mounted close to the area where vacuum
measurement is desired. Failure to mount the 2A in a vertical position will decrease the accuracy of
the measurement between 10 Torr and atmosphere, but will leave the accuracy below 10 Torr unaf-
fected. Each 2A sensor has a key that only allows the MX2A to mate with the sensor in the proper
orientation. Rotate the MX2A until the correct alignment is obtained and the MX2A is able to slide
onto the 2A sensor. Connect the power connector to the top of the unit and be sure to tighten the
screws so that a firm connection is maintained.
Try to avoid connecting the MX2A to the vacuum chamber by long or narrow piping as this may
affect the accuracy and response time of the unit. Avoid mounting the unit near a heater within the
chamber as this may affect the measurement accuracy. Excessive vibration of the unit may affect
accuracy and decrease the life of the unit. Exposure to oils and other contaminants will decrease the
accuracy and decrease the life of the sensor. Do not expose the unit to corrosive gases.
2.2
Electrical Information
Power connectors and adaptors for use with the MX2A are available for purchase from Televac. Op-
erators wishing to create their own adaptors should refer to the pin out of the MX2A below. Each
connection labeled “Floating” has no connection and should remain so.
email: [email protected]
tel: +1 215 947 2500
web: frederickscompany.com
mx2a_im rev F
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