Pressure Switches
GA0001869678
Mykrolis IPS122 0–60 psi Indicating Pressure Switch
About this part
GA0001869678 identifies a Mykrolis IPS122 high-purity indicating pressure switch configured for a 0–60 psi range and Type 2 logic output. The instrument combines a local mechanical pressure indication, adjustable electronic setpoint, LED status indication, and remote solid-state output. Its reported legacy model marking contains an NFT connection segment that is not defined in the current Brooks model-code table; the installed process connection must therefore be verified from the instrument or its original order record
Configurations vary. Verify the exact unit before choosing a replacement.
Key Facts
Specifications
| Part number | GA0001869678 |
| Series | IPS122 |
| Reported model marking | IPS 122-60-PSI-NFT-2 |
| Pressure range | 0–60 psi |
| Switch type | Type 2 logic output |
| Power input | 9–30 VDC |
| Output | Open-collector NPN, 60 mA sinking maximum |
| Output voltage and current draw | 0 to supply voltage; 30 mA when off and 45 mA when on |
| Gauge dial accuracy | ±1% of full scale |
| Response time | Less than 200 ms |
| Switch differential and repeatability | 3% of scale differential; 0.25% of scale repeatability |
| Setpoint operation | Externally adjustable; ascending or descending trip operation is selectable by an internal jumper |
| Helium leak check | 4 × 10^-9 inboard standard cc/s |
| Proof pressure | 110% of full-scale pressure |
| Design pressure | 130% of full-scale pressure |
| Burst pressure | 400% of full-scale pressure |
| Ambient operating temperature | 0 to 160 °F (-18 to 71 °C) |
| Compensated temperature range | 20 to 135 °F (-7 to 57 °C) |
| Storage temperature | -20 to 175 °F (-29 to 79 °C) |
| Approximate shipping weight | 0.85 lb (0.39 kg) |
| Case | Electropolished 300-series stainless steel |
| Socket and Bourdon tube | 316L stainless steel |
| Movement | 300-series stainless steel |
| Bezel and lens | One-piece screw-on polycarbonate |
| Cleaning | Cleaned for oxygen service to ANSI B40.1 Level IV specifications |
| Switch leads | 2 m (6 ft) cable with tinned ends; 0.23 in diameter |
What Does GA0001869678 Mean?
GA0001869678 is the exact part identifier. The associated IPS122 marking can be partially decoded using the Brooks manufacturer ordering table without normalizing its unresolved legacy connection code.
| Segment | Field | Interpretation |
|---|---|---|
| GA0001869678 | Exact part identifier | Mykrolis part identifier associated with this configured unit; manufacturer family literature does not decode the GA number. |
| IPS 122 | Base model | IPS122 indicating pressure switch. |
| 60 | Pressure range | Manufacturer range table maps this code to 0–60 psi. |
| PSI | Engineering units | Pounds per square inch. |
| NFT | Pressure-connection field | Legacy value reported for this unit. NFT is not defined in the current Brooks table, which lists VM, VSM, VSF, and NPT; do not assert a connection type without physical or original-order evidence. |
| 2 | Switch type | Type 2 logic output: 9–30 VDC input with a 60 mA sinking open-collector NPN output. |
| No A or D segment reported | Trip position | The current ordering table uses A for ascending/normally open and D for descending/normally closed. The unit's factory configuration must be established from its rear tag or internal J2 jumper. |
| 01-0120-J | Secondary marking | Observed with the exact unit but not decoded in manufacturer literature; it is not treated as an alias or specification. |
Configuration and Service Notes
The IPS122 setpoint and output behavior must be checked against the installed unit before replacement or commissioning.
- The rear tag identifies the factory ascending or descending trip configuration; the reported configured string does not include the current A/D trip-position segment.
- Internal jumper J2 changes the electronic output between ascending and descending operation. Jumper J1 independently inverts LED behavior.
- The red pointer on the lens is only a visual setpoint reminder; moving it does not change the electronic setpoint.
- Brooks currently places IPS122 and IPT122 in its legacy-products documentation. No manufacturer replacement relationship was verified.
- Do not twist the cable within the IPS housing or overtighten the setpoint-adjustment screw.
Documentation Downloads
Local PDF copiesPart Photos
2 imagesHistorical archive images for identification, labels, connectors, and condition reference, not current inventory.
Historical Listings & Prices
Historical listing data, not a current offerThe typical recorded price range is $85.00 to $85.00. Based on 1 archived listing record; not a current offer, appraisal, or confirmed sale price.
View archived listing titles
- Brooks pressure gauge with protector and outputs, GA0001869678