629H 0.02-25,000 Torr, Heated (45 or 100°C) Absolute Baratron® Capacitance Manometers
Overview
The 629H Baratron® process capacitance manometer is temperature controlled to either 45°C or 100°C, accurate to 0.12% of Reading, and includes improved temperature control electronics to provide superior long-term stability and repeatability. It has an optional external zero input.
- Temperature controlled to 45°C or 100°C for up to 0.12% of reading accuracy
- 0 to 10 VDC analog output proportional to absolute pressure
- Full Scale ranges low as 20 mTorr for precise low pressure measurement
- All-Inconel corrosion-resistant wetted surfaces
- Integrated sump for particle protection
- Measures total pressure directly, independent of gas composition
Products
| Compare | Description | Drawings, CAD & Specs | Availability | Price | |||
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Heated Capacitance Manometer, 0.1 Torr, 45°C, 8 VCR-F, DB9 w/Thread Lock, 0.25% of Rdg Accuracy, Status LED, External Zero
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629H.1TBCJ4B Heated Capacitance Manometer, 0.1 Torr, 45°C, 8 VCR-F, DB9 w/Thread Lock, 0.25% of Rdg Accuracy, Status LED, External Zero |
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Heated Capacitance Manometer, 0.1 Torr, 45°C, 8 VCR-F, DB9 w/Thread Lock, 0.50%/Rdg Accuracy, Status LED
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629H.1TBFL2B Heated Capacitance Manometer, 0.1 Torr, 45°C, 8 VCR-F, DB9 w/Thread Lock, 0.50%/Rdg Accuracy, Status LED |
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Heated Capacitance Manometer, 10 Torr, 45°C, 8 VCR-F, DB9 w/Thread Lock, 0.12% Rdg Accuracy, Status LED
$2,399
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629H11TBCJ2B Heated Capacitance Manometer, 10 Torr, 45°C, 8 VCR-F, DB9 w/Thread Lock, 0.12% Rdg Accuracy, Status LED | $2,399 |
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Heated Capacitance Manometer, 0.1 Torr, 100°C, 8 VCR-F, DB9 w/Thread Lock, 0.25%/Rdg Accuracy
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629H11TBDL1B Heated Capacitance Manometer, 0.1 Torr, 100°C, 8 VCR-F, DB9 w/Thread Lock, 0.25%/Rdg Accuracy |
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Heated Capacitance Manometer, 10 Torr, 45°C, NW16 ISO-KF, DB9 w/Thread Lock, 0.12%/Rdg Accuracy, Status LED, External Zero
$2,454
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629H11TDCJ4B Heated Capacitance Manometer, 10 Torr, 45°C, NW16 ISO-KF, DB9 w/Thread Lock, 0.12%/Rdg Accuracy, Status LED, External Zero | $2,454 |
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Heated Capacitance Manometer, 10 Torr, 100°C, NW16 ISO-KF, DB9 w/Thread Lock, 0.25%/Rdg Accuracy, External Zero
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629H11TDDL3B Heated Capacitance Manometer, 10 Torr, 100°C, NW16 ISO-KF, DB9 w/Thread Lock, 0.25%/Rdg Accuracy, External Zero |
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Heated Capacitance Manometer, 1,000 Torr, 45°C, 8 VCR-F, DB9 w/Thread Lock, 0.12% Rdg Accuracy
$2,288
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629H13TBCJ1B Heated Capacitance Manometer, 1,000 Torr, 45°C, 8 VCR-F, DB9 w/Thread Lock, 0.12% Rdg Accuracy | $2,288 |
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Heated Capacitance Manometer, 1,000 Torr, 100°C, 8 VCR-F, DB9 w/Thread Lock, 0.12% Rdg Accuracy
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629H13TBDL1B Heated Capacitance Manometer, 1,000 Torr, 100°C, 8 VCR-F, DB9 w/Thread Lock, 0.12% Rdg Accuracy |
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Heated Capacitance Manometer, 1,000 Torr, 45°C, NW16 ISO-KF, DB9 w/Thread Lock, 0.12% Rdg Accuracy, Status LED
$2,371
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629H13TDCJ2B Heated Capacitance Manometer, 1,000 Torr, 45°C, NW16 ISO-KF, DB9 w/Thread Lock, 0.12% Rdg Accuracy, Status LED | $2,371 |
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Heated Capacitance Manometer, 1,000 Torr, 100°C, NW16 ISO-KF, DB9 w/Thread Lock, 0.12% Rdg Accuracy
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629H13TDDL1B Heated Capacitance Manometer, 1,000 Torr, 100°C, NW16 ISO-KF, DB9 w/Thread Lock, 0.12% Rdg Accuracy |
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Configuration Options
The following options are available for 629H Baratron® Heated Absolute Capacitance Manometers
Ordering Code Example: 629H01TACJ1B
| Configuration Option | Option Code |
|---|---|
| 629H Absolute Capacitance Manometer. | 629H |
Full Scale Range |
|
| 0.02 Torr (not available in 100°C) | U2T |
| 0.05 Torr | U5T |
| 0.1 Torr | .1T |
| 0.25 Torr | RET |
| 1 Torr | 01T |
| 2 Torr | 02T |
| 10 Torr | 11T |
| 20 Torr | 21T |
| 100 Torr | 12T |
| 1000 Torr | 13T |
| 2000 Torr | 23T |
| 5000 Torr | 53T |
| 10000 Torr | 14T |
| 15000 Torr | RBT |
| 20000 Torr | 24T |
| 25000 Torr | RCT |
Fittings |
|
| 0.5 in. OD Tube | A |
| 8 VCR female | B |
| 1.33 in. OD CF | C |
| NW16 ISO-KF (range < 5000 Torr) | D |
| 8 VCO female | E |
| 2.75 in. OD CF | L |
| NW25 ISO-KF (range < 5000 Torr) | Q |
Accuracy |
|
| 0.12% of Reading | C |
| 0.15% of Reading | D |
| 0.25% of Reading | E |
| 0.5% of Reading | F |
Temperature |
|
| 45°C | J |
| 100°C | L |
Options |
|
| Standard Configuration | 1 |
| Optional Heater Status | 2 |
| External Zero (not available on 0.02 Torr 45°C and 0.05 Torr 100°C) | 3 |
| Heater Status and External Zero (not available on 0.02 Torr 45°C 4 and 0.05 Torr 100°C) | 4 |
Connector |
|
| 9 pin Type "D" with Thread Locks | B |
| 9 pin Type "D" with Slide Locks | P |
Specifications
-
TypeVacuum/pressure Transducer
-
Measurement TypeAbsolute
-
Sensor TemperatureControlled to 45°C or 100°C
-
Full Scale Pressure Ranges0.02 (45°C only), 0.05, 0.1, 0.25, 1, 2, 10, 20, 100, 1000, 2000, 5000, 10000, 15000, 20000, 25000 Torr
-
Accuracy45°C version: 0.12% of reading for 1-25,000 Torr
0.15% of reading for 0.25, 0.1, and 0.05 Torr
0.25% for 0.02 Torr -
Analog Output0-10 VDC into >10K Ω load
-
Analog Connector9-pin D-sub
-
Span Temperature Coefficient0.02% of Reading/°C
-
Operating Temperature Range45°C version: 15-40°C
100°C version: 15-50°C -
Volume6.3 cc
-
Warm-up Time2 hours for 1-25,000 Torr ranges, 4 hours for ranges < 1 Torr
-
Overpressure Limit45 psia (310 kPa) or 120% Full Scale, whichever is greater
-
Exposed MaterialsInconel®
-
Power Requirements±15 VDC ±5% @ 0.25 A (45°C) or 0.6 (100°C)
-
ComplianceCE
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.
Internally Heated to 45°C or 100°C
These capacitance manometers are temperature controlled to 45°C or 100°C for improved accuracy. Unheated versions are exposed to ambient temperature variations which can degrade the sensor accuracy. These devices have the sensor enclosed in a volume that is maintained at a constant temperature above ambient. This solution improves the manometer’s accuracy and repeatability and lowers instrument drift by reducing or eliminating process contamination within the manometer. Heated manometers are recommended for applications that require maximum accuracy and repeatability, operate above ambient temperature and for those processes that employ hot gases.
The pressure sensor is located inside a 45°C or 100°C constant temperature oven for improved pressure measurement accuracy.
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.
All-Inconel® Wetted Surfaces
These pressure transducers feature all Inconel® construction of the pressure sensor allowing it to operate without damage in virtually any chemical environment, including exposure to halogens, deionized water and steam, and ozone.
0 to 10 VDC Proportional Analog Output
These Baratron® capacitance manometers feature a high-level 0-10 VDC analog output signal that is linear with pressure. This analog output can be interfaced with an MKS pressure controller, an MKS power supply/display instrument, or any instrument that meets these requirements.
9-pin Type "D" Pin-outs
| Pin | Description |
|---|---|
| 1 | Pressure Output |
| 2 | No Connection |
| 3 | No Connection |
| 4 | +15 VDC |
| 5 | -15 VDC |
| 6 | No Connection |
| 7 | External Zero |
| 8 | Pressure Common |
| 9 | Power Common |
Resources
Literature
- 629H Heated (45°C or 100°C) Absolute Baratron® Capacitance Manometer (2.1 MB, PDF)
- Analog 600 Series Absolute Baratron® Capacitance Manometer Selection Guide (2.9 MB, PDF)
Manuals
- 629D Baratron® Heated Absolute Capacitance Manometer Manual (504.2 kB, PDF)
- 629 and E29 Capacitance Manometer Pin-outs (21.8 kB, PDF)
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