The 226B Differential Baratron® is a general-purpose differential capacitance manometer available in full-scale measurement ranges from 0.2 to 1000 Torr and can be configured with a wide variety of fittings, input/output signals, and electrical connectors. It is mounted in a rugged industrial-grade housing that minimizes external RF/EM interference on the electronics and when properly configured, is completely "drop-in" compatible with earlier Baratron® differential manometers.
Compare | Description | Drawings, CAD & Specs | Availability | Price | |||
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Vacuum Pressure Transducer, Differential, 10 Torr, 4 VCR-F, 0-10 VDC, Bidirectional, DB9
$898
15 Weeks
|
226B11TCDCDFB2A1 Vacuum Pressure Transducer, Differential, 10 Torr, 4 VCR-F, 0-10 VDC, Bidirectional, DB9 |
15 Weeks
|
$898 |
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Pressure Transducer, Differential, 100 kPa, 0.1875 in. Tube, 0-5 VDC, Unidirectional, Terminal
$934
|
226B12KBGBGFU3T1 Pressure Transducer, Differential, 100 kPa, 0.1875 in. Tube, 0-5 VDC, Unidirectional, Terminal | $934 |
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Vacuum Pressure Transducer, Differential, 100 Torr, 4 VCR-F, 0-10 VDC, Bidirectional, DB9
$898
15 Weeks
|
226B12TCDCDFB2A1 Vacuum Pressure Transducer, Differential, 100 Torr, 4 VCR-F, 0-10 VDC, Bidirectional, DB9 |
15 Weeks
|
$898 |
|
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Pressure Transducer, Differential, 1000 Torr, 4 VCR-F, 0-10 VDC, Bidirectional, DB9
$898
15 Weeks
|
226B13TCDCDFB2A1 Pressure Transducer, Differential, 1000 Torr, 4 VCR-F, 0-10 VDC, Bidirectional, DB9 |
15 Weeks
|
$898 |
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Pressure Transmitter, Differential, 1000 Torr, 4 VCR-F, 4-20 mA, Bidirectional, Terminal
$936
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226B13TCDCDFB4T1 Pressure Transmitter, Differential, 1000 Torr, 4 VCR-F, 4-20 mA, Bidirectional, Terminal | $936 |
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Vacuum Pressure Transducer, Differential, 20 mbar, NW16 ISO-KF, 0-1 VDC, Bidirectional, Terminal
$934
|
226B21MGAGAFB1T1 Vacuum Pressure Transducer, Differential, 20 mbar, NW16 ISO-KF, 0-1 VDC, Bidirectional, Terminal | $934 |
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The following options are available for the 226B Baratron® Differential Capacitance Manometer.
Ordering Code Example: 226BXXXYYZZQSSTV
Configuration Option | Option Code |
---|---|
226B Baratron Differential Capacitance Manometer | 226B |
Pressure Range |
|
0.02 (kPA only) | U2 |
0.1 (kPA & inH2O only) | .1 |
0.2 (not available inH2O) | .2 |
0.5 (kPA & inH2O only) | .5 |
1 | 01 |
2 | 02 |
5 | 05 |
10 | 11 |
20 | 21 |
50 (not available for kPA) | 51 |
100 | 12 |
200 (not available for kPA & inH2O) | 22 |
500 (inH2O only) | 52 |
1000 (not available for kPA & inH2O) | 13 |
Engineering Units |
|
Torr/mmHg | T |
mbar | M |
kPa | K |
inH2O | W |
cmH2O | R |
Reference Side Fitting (compatible with) |
|
0.25 in. OD tube | BB |
0.1875 in. OD tube | BG |
4 male VCR | CB |
4 female VCR | CD |
4 male VCO | DC |
4 female VCO | DD |
0.25 in. female NPT | FA |
0.25 in. male NPT | FB |
0.125 in. male NPT | FE |
0.125 in. female NPT | FF |
NW16 KF | GA |
1.33 in. OD Conflat | HA |
Measurement Side Fitting (compatible with) |
|
0.25 in. OD tube | BB |
0.1875 in. OD tube | BG |
4 male VCR | CB |
4 female VCR | CD |
4 male VCO | DC |
4 female VCO | DD |
0.25 in. female NPT | FA |
0.25 in. male NPT | FB |
0.125 in. male NPT | FE |
0.125 in. female NPT | FF |
NW16 KF | GA |
1.33 in. OD Conflat | HA |
Accuracy |
|
0.50% Full Scale (standard) | F |
0.30% Full Scale | K |
0.30% Reading (unidirectional calibrations only) | S |
Input/Output & Calibration |
|
±15 VDC input/0-1 VDC bidirectional output | B1 |
±15 VDC input/0-10 VDC bidirectional output | B2 |
±15 VDC input/0-5 VDC bidirectional output | B3 |
+24-32 VDC excitation/4-20 mA bidirectional output | B4 |
+24 VDC input/0-1 VDC bidirectional output | B5 |
+24 VDC input/0-5 VDC bidirectional output | B7 |
±15 VDC input/0-1 VDC unidirectional output | U1 |
±15 VDC input/0-10 VDC unidirectional output | U2 |
±15 VDC input/0-5 VDC unidirectional output | U3 |
+24-32 VDC excitation/4-20 mA unidirectional output | U4 |
+24 VDC input/0-1 VDC unidirectional output | U5 |
+24 VDC input/0-5 VDC unidirectional output | U7 |
Electrical Connector |
|
9-pin D-subminiature (standard) | A |
Terminal block adaptor, 5-post | T |
Flying lead adapter, 10 ft (3 m) length | L |
Mounting |
|
No bracket | 0 |
Mounting bracket, standard | 1 |
Mounting bracket, slotted | 2 |
Differential capacitance manometers can be connected to any pressure or vacuum source for use as the reference pressure. These manometers read the difference in pressure between the inlet tube and the reference cavity at the backside of the electrode. Differential pressure transducers can be used to measure either the true differential pressure or vacuum between two locations, or the reference side of the product can be left open to provide a true reference to local atmospheric pressure. Applications include air and gas flow measurements for filters and analytical systems, downstream pressure control in thin film processing systems, and automated leak testing systems.
The patented capacitance sensor is built entirely from Inconel® nickel alloys on its measurement side, which offers superior corrosion resistance over long periods of time. Inconel® construction also offers high overpressure tolerances that reduce errors due to line pressure spikes, and high burst pressure ratings that contribute to overall system safety.
226 & 228 differential capacitance manometers provide a high-level analog output signal that is linear with pressure. It can operate on either ±15VDC or +24VDC input voltage, and it offers four different analog output signals (0-10V, 0-5V, 0-1V, and 4-20 mA) for use in nearly any control or data acquisition system. The sensor and electronics are mounted in a rugged industrial-grade housing that has high immunity and isolation from RF and EM interference.
These Baratron® differential capacitance manometers can be equipped with any of twelve (12) different fittings on either the measurement or reference sides, including common industrial and semiconductor-industry standards like VCR®, NW-KF, VCO®, and NPT.
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.