Sensors and Gauges

IPT122

Brooks Instrument 2-Inch Indicating Pressure Transmitter

About this part

The Brooks Instrument IPT122 is the pressure-transmitter base model in the 122 Series of stainless-steel indicating pressure instruments for high-purity gas-delivery and semiconductor process systems. It combines local mechanical indication with a configurable analog voltage or current output. IPT122 alone does not define the pressure range, dial units, process connection, or transmitter output; those fields appear in the configured model code

Configurations vary. Verify the exact unit before choosing a replacement.

Specifications Documents (2)Photos (11)Listing history

Brooks Instrument 122 Series IPT122 2-inch indicating pressure transmitter auction image

Archived part photo · View gallery

Key Facts

ManufacturerBrooks Instrument 122 Series

Part numberIPT122

Product familyConfiguration-specific

Device type2-inch indicating pressure transmitter

Configuration statusConfiguration varies

Application classSemiconductor/high-purity gas delivery

CategorySensors and Gauges

Specifications

Identification

Manufacturer	Brooks Instrument
Series	122 Series
Product type	2-inch stainless-steel indicating pressure transmitter
Lifecycle	Legacy product

Configuration

Model-code structure	IPT122-[pressure range]-[units]-[pressure connection]-[transmitter option]
Base-identifier boundary	IPT122 specifies the pressure-transmitter base model only; the configured suffix is required to establish range, units, connection, and output

Performance

Available pressure range	Vacuum through 4,000 psi (276 bar), depending on configured range
Gauge dial accuracy	1% of full scale
Response time	Less than 200 ms
Helium leak check	4 × 10^-9 inboard standard cc/s

Pressure limits

Proof pressure	110% of full scale
Design pressure	130% of full scale
Burst pressure	400% of full scale

Electrical

Analog output families	0–5 Vdc, 1–5 Vdc, or 4–20 mA, selected by the configured transmitter option
Input voltage	11.5–30 Vdc; 12 Vdc recommended
Supply stability	Filtered supply with noise below 2 mV RMS and ripple below 6 mV peak-to-peak

Environmental

Ambient operating temperature	0–160°F (-18–71°C)
Compensated temperature range	20–135°F (-7–57°C)
Storage temperature	-20–175°F (-29–79°C)

Construction

Case	Electropolished 300 Series stainless steel
Bezel and lens	One-piece screw-on polycarbonate
Socket and Bourdon tube	316L stainless steel
Movement	300 Series stainless steel
Process-connection families	Face-seal male, face-seal swivel male, face-seal swivel female, or 1/4-inch NPT male; selected by configured code
Cleaning	Cleaned for oxygen service to ANSI B40.1 Level IV specifications

Physical

Approximate shipping weight

0.85 lb (0.39 kg)

Trade classification

Brooks model-series classification

HTS 9026.20.8000; ECCN EAR99; listed country of assembly/manufacturing: United States

What Does IPT122 Mean?

IPT122 is segment I of the manufacturer ordering code. A complete configured identifier adds four suffix fields.

Segment	Field	Interpretation
I	Base model	IPT122 = pressure transmitter
II	Pressure range	Not specified by IPT122 alone; configured identifiers use a published range code
III	Units	Not specified by IPT122 alone; documented choices include PSI, PSI/Bar, MPa, Bar, and PSI/KGC
IV	Pressure connection	Not specified by IPT122 alone; VM = face-seal male, VSM = face-seal swivel male, VSF = face-seal swivel female, and NPT = 1/4-inch NPT male
V	Transmitter output	Not specified by IPT122 alone; the January 2024 ordering table lists options 1, 3, and 9

January 2024 Transmitter Options

These options appear in the current manufacturer model-code table; the complete configured identifier is required to select one.

Code	Output	Lead detail
1	0–5 Vdc, floating referenced	Specified by transmitter code
3	1–5 Vdc, ground referenced	Specified by transmitter code
9	4–20 mA, sourcing	6-foot cable with tinned ends

Service and Installation Notes

Keep the transmitter double-bagged until installation and remove it from the protective bag only in a clean environment.
For high-purity installation, maintain at least 1 slpm (0.05 scfm) of inert purge gas; the manual recommends electronic-grade nitrogen.
The transmitter is factory calibrated. Field calibration is required only after ZERO or SPAN adjustment or when a different output is needed.
Pressure-cycle the electromechanical gauge after shipment or installation to return its linkage to the home position.
Annual gauge-cycle testing is recommended to verify smooth operation and the ZERO and SPAN adjustments.
Confirm process-material compatibility and check the device regularly for leakage. Remove process pressure and disconnect power before service.
Observe electrostatic-discharge precautions when handling internal electronics.

Documentation Downloads

Local PDF copies

IPS122/IPT122 2 Inch Stainless Steel Indicating Pressure Switches/Transmitters Data Sheet (2024-01) Local PDF download

PDF627 KB

IPT122 Series Installation and Operation Manual, X-PR-IPT122-eng, Part Number 541B151AAG (December 2017) Local PDF download

PDF2.2 MB

Part Photos

11 images

Historical archive images for identification, labels, connectors, and condition reference, not current inventory.

Historical Listings & Prices

Historical listing data, not a current offer

Archive records5Tracked historical listing records

Historical median price$99.95Based on archived listing records

Recorded price range$40.00 - $509.25Low to high recorded listing price

Local documents2PDF copies available from Sonisys

Recorded price context

The typical recorded price range is $63.60 to $345.55. Based on 5 archived listing records; not a current offer, appraisal, or confirmed sale price.

View archived listing titles

Brooks Instrument IPT122 0-100 psi Indicating Pressure Transmitter New No Box

Archived listings

Other Part Numbers & Aliases

IPT122Brooks IPT122Brooks Instrument IPT122