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The CS81 intrinsically safe low-pressure transducer from Core Sensors is a high-strength sensor designed for use in low-pressure class I, division 1 intrinsically safe environments. Available with pressure ranges from 1 PSI up to 49 PSI with an all welded stainless steel construction and customisable configurations. The CS81 offers a choice of electrical outputs and various wetted materials. This sensor series has an operating temperature range of -40ยฐC to +85ยฐC, a media temperature range of -40ยฐC to +125ยฐC and an accuracy of โคยฑ0.25% BFSL.
The CS81 Intrinsically Safe Low-Pressure Transducer is certified by CSA to operate safely in Class I, Division 1 Intrinsically Safe rated locations when used with an approved current limiting barrier. The CS81 features a configurable design, allowing Core Sensors to tailor the transducer to your application’s operating requirements. The CS81 is offered in a low power configuration, capable of operating from an unregulated power supply of 3-5VDC and consuming 3mA or less of current.
- Intrinsically safe low-pressure transducer
- Pressure ranges available from 1 PSI up to 49 PSI
- Accuracy of โคยฑ0.25% BFSL (โคยฑ0.5% BFSL 2 PSI & below) *
- Stability of โคยฑ0.25% of FS (1 year)
- Pressure cycles of 100 million
- Overpressure of 2x minimum
- Burst pressure of 5x or 245 PSI (whichever is less)
- Electrical output options of 4-20mA, 1-5V, 1-6V, 10mV/V, 0.5-4.5V ratiometric or 0.5-2.5V non-ratiometric
- Temperature range โ40ยฐC to +80ยฐC
- Media temperature range of -40ยฐC to +125ยฐC
- Wetted materials available of 17-4ph, 316L SS, Hastelloy C276 ** and Inconel 718 **
- All welded stainless steel construction for a minimum IP65 rating ***
- Contact us for customisable options
* Accuracy includes non-linearity, hysteresis and non-repeatability
** Special order item
*** IP Rating applies when the electrical connector is attached with the appropriate ingress protection and is dependent on the electrical termination selected. Contact us for more information.
Approvals for the Core CS81 series include:
- CSA Class I, Division 1 groups C, D T4
- Class I, Zone 0 AEx ia IIB T4 Ga (Ex ia IIB T4 Ga)
- ABS (American bureau of shipping)
- CE
Typical applications for the CS81 intrinsically safe low-pressure transducer series include:
- Natural gas compression
- Oil exploration
- Process control
For details on the entity parameters of this part, please see page 4 of the datasheet linked above.
Performance, Thermal, Environmental & Physical Specifications Table
| Attribute | Value |
|---|---|
| Accuracy at 25ยฐC * | โคยฑ0.25% BFSL โคยฑ0.5% BFSL (2 PSI & below) |
| Stability (1 Year) | โคยฑ0.25% of FS |
| Pressure Cycles | 100 million |
| Overpressure | 2x minimum |
| Burst Pressure | 5x or 245 PSI (whichever is less) |
| Operating Temperature | -40ยฐC to +80ยฐC -20ยฐC to +80ยฐC for DIN 43650-A |
| Media Temperature | -40ยฐC to +125ยฐC -40ยฐC to +105ยฐC for DIN 43650-A |
| Compensated Temperature | 0ยฐC to +55ยฐC |
| Storage Temperature | -40ยฐC to +125ยฐC |
| TC Zero | โคยฑ1% of FS โคยฑ2% of FS (2 PSI & below) |
| TC Span | โคยฑ1% of FS โคยฑ2% of FS (2 PSI & below) |
| EMI / RFI Protection | Yes |
| IP Rating ** | IP65 minimum |
| Vibration | 10g, 20 to 2000Hz |
| Shock | 100g, 11msec, 1/2 sine |
Electrical Specifications (Current)
| Attribute | Value |
|---|---|
| Outputs | 4 to 20mA |
| Excitation | 10 to 28VDC |
| Current Consumption | 20mA (typical) |
| Output Load | 0 to 800โฆ at 10 to 28VDC |
| Frequency Response | ~250Hz (minimum) |
| Zero Offset (of FS) | โคยฑ0.5% (typical) ยฑ1% maximum |
| Span Tolerance (of FS) | โคยฑ0.5% (typical) ยฑ1% maximum |
Electrical Specifications (Voltage)
| Attribute | Value |
|---|---|
| Outputs | 1 to 5V 1 to 6V |
| Excitation | 10 to 28VDC |
| Current Consumption | <10mA |
| Output Load | 5kฮฉ (minimum) |
| Frequency Response | ~1kHz (minimum) |
| Zero Offset (of FS) | โคยฑ0.5% (typical) ยฑ1% maximum |
| Span Tolerance (of FS) | โคยฑ0.5% (typical) ยฑ1% maximum |
Electrical Specifications (Ratiometric Voltage)
| Attribute | Value |
|---|---|
| Outputs | 0.5 to 4.5V ratiometric |
| Excitation | 5VDC ยฑ0.5V |
| Current Consumption | <10mA |
| Output Load | 5kฮฉ (minimum) |
| Frequency Response | ~1kHz (minimum) |
| Zero Offset (of FS) | โคยฑ0.5% (typical) ยฑ1% maximum |
| Span Tolerance (of FS) | โคยฑ0.5% (typical) ยฑ1% maximum |
Electrical Specifications (Low Power Voltage)
| Attribute | Value |
|---|---|
| Outputs | 0.5 to 2.5V non-ratiometric |
| Excitation | 3 to 5VDC unregulated |
| Current Consumption | โค3mA |
| Output Load | 5kฮฉ (minimum) |
| Frequency Response | ~1kHz (minimum) |
| Zero Offset (of FS) | โคยฑ0.5% (typical) ยฑ1% maximum |
| Span Tolerance (of FS) | โคยฑ0.5% (typical) ยฑ1% maximum |
Electrical Specifications (Millivolt)
| Attribute | Value |
|---|---|
| Outputs | 10mV/V |
| Excitation | 5VDC (typical) |
| Current Consumption | <5mA |
| Output Impedance | >1Mโฆ |
| Frequency Response | ~5kHz (minimum) |
| Zero Offset (of FS) | โคยฑ2% (maximum) |
| Span Tolerance (of FS) | โคยฑ2% (maximum) |
Core Sensors design and manufacture high-quality sensors for measuring pressure and temperature properties for industrial and hazardous applications worldwide. Core offers solutions for industrial, submersible, differential and hazardous applications in both standard and custom packaging. In-house design and manufacturing capabilities along with strategic manufacturing partners allow Core to create solutions to some of the most complex sensor requirements. Please visit https://core-sensors.com for more information.
