TELEVAC Compact 2A Instruction Manual

The Fredericks Company

Compact 2A Thermocouple Controller

Instruction Manual

The Fredericks Company - Televac

2400 Philmont Avenue

Huntingdon Valley, PA 19006

web: www.frederickscompany.com

email: [e-mail]

tel: [phone]

fax: [phone]

CONTENTS LIST OF FIGURES

Contents

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.1 Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.3 Operating Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.4 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.5 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.2 Electrical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.4 Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

List of Tables

1 Operating Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2 Controller, Cable, and Sensor Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

List of Figures

1 Compact 2A Dimensional Drawing (inches) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2 Compact 2A Electrical Connection Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3 Compact 2A Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

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1 INTRODUCTION

1 Introduction

1.1 Disclaimer

All information in this manual is subject to change without notice. The Fredericks Company assumes
no responsibility for inaccuracies in product specifications or any liability arising from product use.
Please contact Televac at [e-mail] or call 215-947-2500 with comments or questions.

1.2 Description

The Compact 2A is a thermocouple vacuum sensor controller with a range of 1 × 10−3Torr to 20 Torr.
It utilizes a Televac thermocouple vacuum sensor, part number 2-2100-10 or 2-2126-0YY. It has an
easy-to-read analog display that indicates pressure in units of mTorr. The Compact 2A has a 0-10 Volt
analog output.

1.3 Operating Specifications

Table 1: Operating Specifications

Operating Range 1 × 10−3to 20 Torr
Communications N/A
Programmable Set Points N/A
Analog Output 0 to 10 V Non-linear
Supply Voltage 90 V to 135 V AC, 60 Hz
Calibration Medium Dry air or nitrogen
Overpressure Sensor-dependent
Analog Output Resolution 12 bits
Operating Temperature 0◦C to 50◦C
Storage Temperature −20◦C to 60◦C
Bakeout Temperature Sensor-dependent
Response Time ≤ 1 second
Accuracy

1 mTorr to 10 mTorr

10 mTorr to 500 mTorr

500 mTorr to 1 Torr

Analog Output

Display Readable Distance 1 m (3 feet)

±1 mTorr
±10%
±20%
±10 mV

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1.4 Safety Information 1 INTRODUCTION

1.4 Safety Information

START BY READING THESE IMPORTANT

SAFETY INSTRUCTIONS AND NOTES

In these instructions the word “product” refers to the Compact 2A and all of its approved parts and ac­cessories. NOTE: These instructions do not and cannot provide for every contingency that may arise
in connection with the installation, operation, or maintenance of this product. Should you require
further assistance, please contact Televac at the email address found in the footer of this manual.

This product has been designed and tested to offer reasonably safe service provided in it is installed,
operated and serviced in strict accordance with these safety instructions.

These safety precautions must be observed during all phases of operation, installation, and service
of this product. Failure to comply with these precautions or with specific warnings elsewhere in this
manual violates safety standards of design, manufacture, and intended use of the instrument. Televac
disclaims all liability for the customer’s failure to comply with these requirements.



READ instructions – Read all safety and operating instructions before operating the product.



RETAIN instructions – Retain the Safety and Operating Instructions for future reference.



HEED warnings – Adhere to all warnings on the product and in the operating instructions.



FOLLOW instructions – Follow all operating and maintenance instructions.



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 Compact 2A 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 on introducing addi­tional 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

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1.5 Dimensions 2 SETUP

1.5 Dimensions

Figure 1: Compact 2A Dimensional Drawing (inches)

2 Setup

2.1 Installation

Each Compact 2A is designed to be used in conjunction with a 2A Thermocouple sensor. The 2A
sensor can be mounted in any orientation. The sensor should be mounted close to the area where
vacuum measurement is desired. Each 2A sensor has a key that only allows the sensor end of the
Compact 2A cable to mate with the sensor in the proper orientation. Rotate the sensor end of the
Compact 2A cable until the correct alignment is obtained and the Compact 2A cable is able to slide
onto the 2A sensor. Connect the RJ14 end of the Compact 2A cable into the port on the back of the
Compact 2A. It is recommended that the ground connector on the cable is also connected to the port
on the back of the Compact 2A labeled with the universal earth ground symbol.

Try to avoid connecting the 2A sensor 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 sensor may affect
accuracy and decrease the life of the sensor. Exposure to oils and other contaminants will decrease
the accuracy and decrease the life of the sensor. Do not expose the sensor to corrosive gases.

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2.2 Electrical Information 2 SETUP

2.2 Electrical Information

The Compact 2A has several connectors located on the rear of the unit. A connection diagram is
provided for convenience.

Figure 2: Compact 2A Electrical Connection Information

Label Description
1 Thermocouple Sensor Input
2 AC Input
3 Analog Output
4 Thermocouple Sensor Ground

2.3 Calibration

The Compact 2A controller provides a calibration adjustment to maximize the accuracy of each sen­sor. The adjustment should be set at 1 mTorr. Maximum accuracy will utilize a 2A sensor and a
NIST traceable reference gauge co-located on a vacuum chamber. A controlled leak of dry nitrogen
is necessary for calibration. All Compact 2A controllers purchased with a 2A sensor will be factory
calibrated and there is no need for adjustment.

For calibration, pump the vacuum chamber down to below 1 × 10−4Torr. Using the leak control
on the vacuum system, adjust the pressure in the chamber until the reference gauge reads 1 mTorr.
Then adjust the potentiometer located in the rear of the unit until the display shows 1 mTorr.

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2.4 Analog Output 2 SETUP

2.4 Analog Output

The Compact 2A contains a 0-10 V Non-Linear analog output for use with voltmeters, programmable
logic controllers or other data acquisition devices. To convert the analog output signal to a pressure,
refer to Figure 3.

Figure 3: Compact 2A Analog Output

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3 Part Numbers

Table 2: Controller, Cable, and Sensor Part Numbers

Compact 2A Controller 2-3014-042
2A Sensor 1/8” NPT Nickel-Plated Brass 2-2100-10
2A Sensor Stainless Steel 1/8” NPT 2-2126-001
2A Sensor Stainless Steel NW16 (DN16 ISO-KF) 2-2126-030
2A Sensor Stainless Steel NW25 (DN25 ISO-KF) 2-2126-031
2A Sensor Stainless Steel 8-VCO Male 2-2126-040
2A Sensor Stainless Steel 8-VCO Female 2-2126-041
2A Sensor Stainless Steel 8-VCR Male 2-2126-042
2A Sensor Stainless Steel 8-VCR Female 2-2126-043
2A Sensor Stainless Steel 4-VCR Male 2-2126-044
2A Sensor Stainless Steel 4-VCR Female 2-2126-045
2A Sensor Stainless Steel 1.33” CF (DN16 ISO-CF-F) 2-2126-050
2A Sensor Stainless Steel 2.75” CF (DN40 ISO-CF-F) 2-2126-052
3 ft Cable 2-9800-076
10 ft Cable 2-9800-077
20 ft Cable 2-9800-078
35 ft Cable 2-9800-079
50 ft Cable 2-9800-080
35 ft Cable 2-9800-079
2A Mini Coiled 10 ft Cable 2-9800-082
2A Mini Flat 10 ft Cable 2-2100-084
NASA 2A Miniature Sensor 2-2100-31

3 PART NUMBERS

Contact Fredericks Company for further sensor flange types and cable lengths.

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