Core Sensors CS81 intrinsically safe low-pressure transducer, 1 to 49 psi (70 mbar to 3.4 bar)
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Quick overview
- Type: Pressure transmitters
- Signal / Protocol: 4–20 mA, Voltage, mV/V
- Hazardous area: Hazardous-area rated / option
- Genuine productsSourced from the manufacturer or authorised channels
- Delivery across BangladeshDhaka, Chattogram and all industrial zones
- After-sales supportInstallation guidance and warranty handling
- Reply within 24 hoursCall +880 1713 552466 or email hello@argonmark.com
Specifications
| General | |
|---|---|
| Part no. | BD-1540 |
| Category | Oil & Gas Instruments |
| Group | Instrumentation & Control |
| Brand | Core Sensors |
| Model | CS81 |
| Technical | |
| Type | Pressure transmitters |
| Signal / Protocol | 4–20 mA, Voltage, mV/V |
| Hazardous area | Hazardous-area rated / option |
Datasheet
Technical features
| Rated for Class I, Division 1 / Zone 0 (intrinsically safe) hazardous locations | |
| All-welded stainless steel construction | |
| Wide choice of outputs including low-power 0.5–2.5 V for battery-powered remote sites | |
| Overpressure 2 × minimum; 100 million pressure cycles; 1-year stability ≤ ±0.25% FS | |
| Configurable process and electrical connections |
Applications
| External fuel tank monitoring | |
| Vapour recovery | |
| Natural gas compression |
Environment and construction
| Operating temperature | −40 to +80 °C (−20 to +80 °C with DIN 43650 connector) |
|---|---|
| Media temperature | −40 to +125 °C (−40 to +105 °C with DIN connector) |
| Compensated temperature | 0 to +55 °C |
| Storage temperature | −40 to +125 °C |
| Thermal effects | TC zero and TC span ≤ ±1% FS (≤ ±2% FS at 2 psi and below) |
| Vibration / shock | 10 g, 20–2,000 Hz / 100 g, 11 ms |
| Protection | IP65 minimum (depends on electrical termination); EMI/RFI protected |
| Wetted materials | 316L stainless steel, media isolated |
| Process connections | ½ NPT M, ¼ NPT M and others |
| Electrical connections | DIN 43650-A, Turck Minifast, ½ in MNPT conduit with cable, M12, bayonet (varies by model) |
| Approvals | CSA Class I, Division 1, Groups C, D T4; Class I Zone 0 AEx ia IIB T4 Ga (Ex ia IIB T4 Ga), with approved barrier; ABS; CE |
Key specifications
| Range | 1 to 49 psi (70 mbar to 3.4 bar) |
|---|---|
| Accuracy | ≤ ±0.25% BFSL (≤ ±0.5% at 2 psi and below) |
| Outputs | 4–20 mA, 1–5 V, 1–6 V, 0.5–4.5 V ratiometric, 0.5–2.5 V low power, 10 mV/V |
| Supply | 10–28 V DC (5 V ratiometric; 3–5 V low power) |
| Wetted materials | 316L stainless steel, media isolated |
| Approvals | CSA Class I, Division 1, Groups C, D T4 |
Performance
| Range | 1 to 49 psi (70 mbar to 3.4 bar) |
|---|---|
| Accuracy at 25 °C (non-linearity, hysteresis, repeatability) | ≤ ±0.25% BFSL (≤ ±0.5% at 2 psi and below) |
| Stability (1 year) | ≤ ±0.25% FS |
| Pressure cycles | 100 million |
| Overpressure | 2 × minimum |
| Burst pressure | 5 × or 245 psi, whichever is less |
| Millivolt output | 10 mV/V at 5 V excitation; < 5 mA; ≈ 5 kHz |
Electrical
| Outputs | 4–20 mA, 1–5 V, 1–6 V, 0.5–4.5 V ratiometric, 0.5–2.5 V low power, 10 mV/V |
|---|---|
| 4–20 mA | Excitation 10–28 V DC; load 0–800 Ω; ≈ 250 Hz response; 20 mA typical |
| 1–5 V / 1–6 V | Excitation 10–28 V DC; < 10 mA; load ≥ 5 kΩ; ≈ 1 kHz |
| 0.5–4.5 V ratiometric | Excitation 5 V DC ±0.5 V; < 10 mA; ≈ 1 kHz |
| 0.5–2.5 V low power | Excitation 3–5 V DC unregulated; ≤ 3 mA (battery-powered remote sites) |
| Zero offset / span tolerance | ±0.5% FS typical, ±1% max |
Notes
| Data from the manufacturer's published datasheet. Confirm model, range, materials and approvals with Argonmark before ordering. |
Photo: courtesy of Core Sensors, used with permission (source) — background removed by Argonmark. All photo credits
Description
The Core Sensors CS81 is an intrinsically safe low-pressure transducer for Class I, Division 1 / Zone 0 (intrinsically safe) locations, covering 1 to 49 psi (70 mbar to 3.4 bar) with ≤ ±0.25% BFSL accuracy. Its all-welded stainless steel construction withstands 2 × overpressure and 100 million pressure cycles, with drift of no more than 0.25% FS per year.
Outputs include 4–20 mA, 1–5 V, 1–6 V, 0.5–4.5 V ratiometric, 0.5–2.5 V low power, 10 mV/V, and process and electrical connections can be configured to suit the installation. Approvals: CSA Class I, Division 1, Groups C, D T4.
Argonmark Ltd supplies Core Sensors instruments across Bangladesh — Dhaka, Chattogram, Gazipur, Narayanganj and the gas fields, refineries, terminals and power plants beyond. Send us the model, range, process connection, output and any hazardous-area requirement, and we will confirm the right configuration, lead time and price.
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