42C Baratron® Flow-through Gauge Pressure Switch
Overview
The 42C Flow-through 10 - 26,000 Torr Pressure Switch offers accurate and reliable protection for vacuum/pressure processes. Designed for applications where a DC signal output is not required, these switches provide relay outputs that are readily interfaced with alarms, valve actuators, computers, process controllers, load locks and other protection devices. The 42C is referenced to atmospheric pressure. The trip point on can be set to trip above, below (reverse calibration), or exactly at current atmospheric pressure.
- Flow-through configuration referenced to atmospheric pressure
- Superb set point accuracy and low hysteresis
- All-metal, all-welded construction exposing only stainless steel and Inconel® for corrosion resistance
- Switch relay can be set to energize above or below set point for fail-safe operation
- High reliability reduces downtime
Products
Configuration Options
The following options are available for the 42C Baratron® Flow-through Pressure Switch.
Ordering Code Example: 42B11TCA1AA005
| Configuration Option | Option Code |
|---|---|
| 42C Flow-through Pressure Switch | 42C |
Full Scale Ranges Available (Contact Applications Engineering for other engineering units) |
|
| 1000 Torr | 13T |
| 20 psi | 21P |
| 50 psi | 51P |
| 100 psi | 12P |
| 250 psi | RDP |
| 500 psi | 52P |
| 10 Torr (reverse calibration) | 11D |
| 30 Torr (reverse calibration) | 31D |
| 100 Torr (reverse calibration) | 12D |
| 1000 Torr (reverse calibration) | 13D |
| 20 psi (reverse calibration) | 21C |
| 50 psi (reverse calibration) | 51C |
| 100 psi (reverse calibration) | 12C |
| 250 psi (reverse calibration) | RDC |
| 500 psi (reverse calibration) | 52C |
Fittings |
|
| 4 VCR male | CH |
Input Voltage |
|
| 10-20 VDC | 1 |
| 20-30 VDC | 2 |
Relay Mode |
|
| Energizes with pressure above the set point | A |
| Energizes with pressure below the set point | B |
Connector |
|
| 9-pin Type "D" male | A |
| Flying leads - 2 ft. shielded cable | F |
Trip Point* |
|
| Three digit value (in same units as Full Scale ranges) | xxx |
* For a trip point of 000 (atmospheric pressure), use a reverse calibration Full Scale range code
Specifications
-
TypePressure Switch
-
ConfigurationFlow-Through
-
Pressure Range Full Scale10 Torr through 500 psi
-
Fitting Type4 VCR® male
-
Accuracy±0.5% of Full Scale (± temperature coefficient)
-
Trip Point Range5-100% of Full Scale
-
Trip Point Dead Band±3% of Full Scale
-
Response Time<20 msec
-
Internal Volume6.6 cc
-
Temperature Coefficient±0.07% of Full Scale/°C
-
Materials Exposed to Process GasesInconel and 316L stainless steel
-
Overpressure2 x Full Scale or 45 psia, whichever is greater
-
OutputsElectromechanical relay - SPDT (isolated) contacts rated up to 1 Amp @ 30 VDC resistive.
-
Ambient Operating Temperature0-50°C
-
ComplianceCE, UL recognized* (cULus E520864), EN/IEC CB Approved to all National Deviations *standard MKS part numbers only
Features
Resources
Literature
- 41C, 42C, 51C, 52C Pressure Switches (2 MB, PDF)
Manuals
- MKS 41C, 42C, 51C, & 52C Pressure Switches Manual (705.4 kB, PDF)
- 41, 42, 51, 52 Vacuum/Pressure Switch Pin-outs (23.6 kB, PDF)
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