Keller 23 Ed / 25 Ed flameproof pressure transmitters, Ex db IIC, −1 to 300 bar, 4–20 mA or 0–10 V
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Quick overview
- Type: Gas & flame detection
- Signal / Protocol: 4–20 mA, Voltage
- 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-1544 |
| Category | Oil & Gas Instruments |
| Group | Instrumentation & Control |
| Brand | Keller |
| Model | 23 Ed / 25 Ed |
| Technical | |
| Type | Gas & flame detection |
| Signal / Protocol | 4–20 mA, Voltage |
| Hazardous area | Hazardous-area rated / option |
Datasheet
Technical features
| Piezoresistive transmitter in a pressure-proof (flameproof) housing for gas group II hazardous areas | |
| Analog electronics with resistor/potentiometer compensation of zero, span and temperature coefficients | |
| Modular | many pressure connections, materials (incl. Hastelloy), oil fillings and O2-service versions |
|---|---|
| 23 Ed with G¼ / 25 Ed with G½ front-flush style connection | |
Applications
| Pressure measurement of liquids and gases in Zone 1 hazardous areas | |
| Oil and gas, chemical and petrochemical installations |
Key specifications
| Ranges | −1…1 bar to 0…300 bar (gauge, sealed gauge, absolute) |
|---|---|
| Accuracy | 0.2% FS typ., 0.5% FS max. |
| Output | 4–20 mA 2-wire or 0–10 V 3-wire |
| Supply | 8–32 V DC (13–32 V for 0–10 V) |
| Wetted materials | 316L stainless steel, Viton |
| Approvals | ATEX II 2 G Ex db IIC T6…T4 |
Performance (23 Ed / 25 Ed)
| Accuracy at room temperature | 0.2% FS typ., 0.5% FS max. (linearity, hysteresis, repeatability) |
|---|---|
| Compensated temperature | −10 to 80 °C |
| Temperature coefficients | Zero 0.01% FS/°C max. (FS > 1 bar); sensitivity 0.02%/°C max. |
| Output / supply | 4–20 mA: 8–32 V DC, load (U − 8 V) / 0.025 A; 0–10 V: 13–32 V DC, load > 5 kΩ |
Common data
| Ranges (FS) | Vented gauge −1…1 to 30 bar; absolute/sealed gauge 1…300 bar (25 Ed / 35 X Ed sealed gauge to 100 bar); any range 0.1–300 bar |
|---|---|
| Overpressure | 3 to 450 bar depending on range |
| Stability | 0.1% FS typ. (FS > 1 bar); 1 mbar typ. (FS ≤ 1 bar) |
| Storage / operating temperature | −30 to +100 °C |
| Pressure connections | G¼, G½, G¾, ½-14 NPT, ¼-18 NPT |
| Wetted materials | Stainless steel 1.4435 (316L), Viton; Hastelloy C-276, gold-plated options |
| Oil filling options | Silicone; fluorinated (O2-compatible), olive oil, low-temperature oil |
| Electrical connection | PUR cable 2 m (with reference tube for gauge) |
| Protection | IP50 (IP65/IP68 on request) |
| Endurance | > 10 million cycles |
| Weight | ≈ 200 g |
| Hazardous area | ATEX II 2 G Ex db IIC T6…T4 (LCIE 03 ATEX 6082 X); T4 −30 ≤ Ta ≤ +100 °C, T6 to +80 °C |
Notes
| Data from the manufacturer's published datasheet. Confirm model, range, materials and approvals with Argonmark before ordering. |
Photo: courtesy of Keller, used with permission (source) — background removed by Argonmark. All photo credits
Description
The Keller 23 Ed and 25 Ed are piezoresistive pressure transmitters in a flameproof housing (Ex db IIC T6…T4) for gas group II hazardous areas. They measure absolute and gauge pressures of liquids and gases from −1…1 bar up to 300 bar with 0.2% FS typical accuracy, using analog electronics compensated over −10 to 80 °C.
Outputs are 4–20 mA two-wire or 0–10 V three-wire. Wetted parts are 316L stainless steel (Hastelloy optional), with a choice of pressure connections and oil fillings including oxygen-compatible versions.
Argonmark Ltd supplies Keller 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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