AA01A Baratron® 1 to 1000 Torr Unheated Absolute Capacitance Manometers

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aa01a baratron 1-1000 torr absolute capacitance manometer

Overview

The AA01A Baratron® capacitance manometer is a high-performance, unheated, absolute pressure transducer developed specifically for use in vacuum and pressure measurement applications where accuracy and repeatability are crucial to process success. They use state-of-the-art digital architecture throughout to produce the highest possible long-term performance and reliability.

Full scale absolute pressure measurement from 1 to 1000 Torr
0-10 VDC output proportional to pressure with 0.25% of reading accuracy
Fully welded sensor built entirely from Inconel® and Incoloy® nickel alloys
High overpressure limit ensures reliability from occasional system mishaps
Push button zeroing

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Products

Compare	Description	Compatibility	rankScore	Full Scale Range	Fitting Type	Electrical Connector	Availability	Price
AA01A01TGAS3B00000 Absolute Pressure Transducer, 1 Torr, NW16 ISO-KF, 0-10 VDC, DB15 $1,213 Contact Us	AA01A01TGAS3B00000 Absolute Pressure Transducer, 1 Torr, NW16 ISO-KF, 0-10 VDC, DB15	UNIVERSAL	1.0	1 Torr	NW16 ISO-KF	15-pin D-sub male with screw locks	Contact Us	$1,213
AA01A11TBAS3B00000 Absolute Pressure Transducer, 10 Torr, 0.5 in. OD Tube, 0-10 VDC, DB15 $1,125 Contact Us	AA01A11TBAS3B00000 Absolute Pressure Transducer, 10 Torr, 0.5 in. OD Tube, 0-10 VDC, DB15	UNIVERSAL	1.0	10 Torr	0.5 in. OD tube	15-pin D-sub male with screw locks	Contact Us	$1,125
AA01A12TGCS3B00000 Absolute Pressure Transducer, 100 Torr, NW25 ISO-KF, 0-10 VDC, DB15 $1,213 Contact Us	AA01A12TGCS3B00000 Absolute Pressure Transducer, 100 Torr, NW25 ISO-KF, 0-10 VDC, DB15	UNIVERSAL	1.0	100 Torr	NW25 ISO-KF	15-pin D-sub male with screw locks	Contact Us	$1,213
AA01A13TGAS3B00000 Absolute Pressure Transducer, 1000 Torr, NW16 ISO-KF, 0-10 VDC, DB15 $1,213 Contact Us	AA01A13TGAS3B00000 Absolute Pressure Transducer, 1000 Torr, NW16 ISO-KF, 0-10 VDC, DB15	UNIVERSAL	1.0	1000 Torr	NW16 ISO-KF	15-pin D-sub male with screw locks	Contact Us	$1,213

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Configuration Options

The following options are available for the AA01A Baratron® Absolute Capacitance Manometer.
Ordering Code Example: AA01A11TBAS3B00000

Configuration Option	Option Code
AA01A Unheated Absolute Capacitance Manometer	AA01A
Range Full Scale
1	01
2	02
10	11
20	21
100	12
500	52
1000	13
Engineering Units
Torr/mmHg	T
mbar	M
kPa	K
Fittings (compatible with)
0.5 in. (12.7 mm) OD tube	BA
4 VCR female (V sensor only)	CD
8 VCR female	CE
8 VCR male	CF
NW16 ISO-KF	GA
NW25 ISO-KF	GC
1.33'' (33.8 mm) Conflat, rotatable	HA
2.75'' OD Conflat, rotatable	HC
8 VCO female	DA
Sensor
Standard	S
Short Standard (GC or HA fitting only)	T
¼'' dia. tube (CD fitting only)	V
Analog Output
0 to 10 VDC	3
Electrical Connector
15 POS D-subminiature-M with screw locks	B
15 POS D-subminiature-M with slide lock posts	P
Reserved
Reserved	00
Calibration Orientation
Ranges = 1 Torr	0
Ranges = 1 Torr, horizontal	H
Ranges = 1 Torr, vertical	V
Accuracy
Standard	0
Options
None	0
15 pin D terminal block adapter	U

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	Description
	AA01A Absolute Capacitance Manometer, 1-1000 Torr, 0-10 VDC, DB15

Specifications

Type

Pressure Transducer
Measurement Type

Absolute
Full Scale Pressure Ranges

1, 2, 10, 20, 100, 500, 1000 Torr and metric equivalents
Fitting Type

1/2 inch OD tube standard, other types optional
Analog Output

0 - 10 VDC into >10 kΩ load
Electrical Connector

15-pin D-subminiature standard, terminal block adapter optional
Accuracy

0.25% for 1 to 1000 Torr (0.15% optional)
Resolution

0.002% of Full Scale

Zero Temperature Coefficient

0.005% Full Scale/°C for 10-1000 Torr ranges
0.010% Full Scale/°C for 2 Torr range
0.015% Full Scale/°C for 1 Torr range
Span Temperature Coefficient

0.04% of Reading/°C
Operating Temperature

0 to 50°C
Overpressure Limit

45 psia (310 kPa)
Volume

1/2 inch Tube: 6.29 cm3
8 VCR: 8.605 cm3
Materials Exposed to Process Gases

Inconel and Incoloy nickel alloys
Power Requirements

15 to 30 VDC @ 35 mA
Compliance

CE

Specifications

Type

Pressure Transducer
Measurement Type

Absolute
Full Scale Pressure Ranges

1, 2, 10, 20, 100, 500, 1000 Torr and metric equivalents
Fitting Type

1/2 inch OD tube standard, other types optional
Analog Output

0 - 10 VDC into >10 kΩ load
Electrical Connector

15-pin D-subminiature standard, terminal block adapter optional
Accuracy

0.25% for 1 to 1000 Torr (0.15% optional)
Resolution

0.002% of Full Scale

Zero Temperature Coefficient

0.005% Full Scale/°C for 10-1000 Torr ranges
0.010% Full Scale/°C for 2 Torr range
0.015% Full Scale/°C for 1 Torr range
Span Temperature Coefficient

0.04% of Reading/°C
Operating Temperature

0 to 50°C
Overpressure Limit

45 psia (310 kPa)
Volume

1/2 inch Tube: 6.29 cm3
8 VCR: 8.605 cm3
Materials Exposed to Process Gases

Inconel and Incoloy nickel alloys
Power Requirements

15 to 30 VDC @ 35 mA
Compliance

CE

Features

Baratron® Capacitance Manometer Technology

Capacitance manometers are electro-mechanical gauges that can measure both pressure and vacuum. The capacitance gauge translates a pressure-modulated movement in a thin diaphragm into an electrical signal proportional to the pressure. The pressure sensor is the thin diaphragm that is exposed to the pressure or vacuum being measured via the inlet tube. An electrode is mounted in the reference cavity behind the diaphragm. Pressure differences between the process and the reference cavity deflect the diaphragm slightly, changing the distance between it and the electrode. Variations in this distance produce variations in the capacitance between the diaphragm and the electrode creating an electrical signal that is proportional to the pressure change. Since differences in the capacitance signal are produced by physical changes within the manometer and not by changes in the gas properties, pressure measurements by the capacitance manometer are independent of the composition of the gas being measured.

Gas independent pressure measurement with a Baratron® capacitance manometer. Schematic shows the internal components and functional zones.

Percent of Reading Accuracy

Accuracy is specified as a percent of Reading, not Full Scale, as seen in some of the lower performance devices. Percent of Reading accuracy provides you with an even more accurate output signal in the lower scale of the pressure range, where it is needed most.

Absolute Pressure Measurement

These Baratron® pressure transducers are referenced to vacuum for absolute pressure measurement. Applications include: vacuum furnaces, freeze-drying of fruits and vegetables, gas lasers, automotive component testing, bottle coatings, and vacuum distillation.

Inconel® and Incoloy® Construction

These pressure transducers feature Inconel® and Incoloy® nickel alloy construction of the pressure sensor allowing it to operate without damage in virtually any chemical environment, including halogens, deionized water and steam, and ozone. The sensor is fully welded with no intermediate brazing or joining materials.