COSA Xentaur XDT dew point transmitter with alarms, −100 to +20 °C dp
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Quick overview
- Type: Moisture & humidity
- Signal / Protocol: 4–20 mA, RS-232, Relay / switch
- 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-1434 |
| Category | Oil & Gas Instruments |
| Group | Instrumentation & Control |
| Brand | COSA Xentaur |
| Model | XDT |
| Technical | |
| Type | Moisture & humidity |
| Signal / Protocol | 4–20 mA, RS-232, Relay / switch |
| Hazardous area | Hazardous-area rated / option |
Datasheet
Technical features
| Monitors dryer performance, compressed air quality and dry gas moisture | |
| Two programmable alarm relays (10 A at 240 V) with variable hysteresis, e.g. 'dew point demand' dryer control | |
| Pressure-correct function shows dew point at line pressure | |
| Automated one-minute field SpanCheck without reference standards | |
| Interchangeable HTF sensors; sensor fitting rated to 340 bar | |
| OEM board, DIN panel-mount and NEMA 4 / explosion-proof versions |
Applications
| Air and plastic dryer control | |
| Natural gas processing, petrochemical feedstock, transformer SF₆ and insulating gases | |
| Welding, laser, cryogenic and specialty gases; clean rooms and glove boxes |
Approvals
| NEMA version | UL Class I Div 2 Groups A–D; Class II Groups F, G; optional IS output for Class I Div 1 |
|---|---|
| Explosion-proof version | UL Class I Div 1 Groups B, C, D; EEx d[ia] IIB+H2 |
Key specifications
| Measured variable | Dew point (°C, °F, ppmv, g H₂O/m³, lb H₂O/MMscf) |
|---|---|
| Range | −100 to +20 °C dp (XTR-100) or −65 to +20 °C (XTR-65) |
| Accuracy | ±2 °C (−100 to 0 °C dp), ±3 °C (0 to +20 °C dp) |
| Output | 4–20 mA, 0–24 mA or voltage; RS-232; 2 alarm relays (option) |
| Power supply | 100–240 V AC; 12 V DC or 15–30 V DC |
| Approvals | UL Class I Div 1/2 versions; EEx d[ia] IIB+H2 (explosion-proof version) |
Sensor
| Dew point range | XTR-100: −100 to +20 °C; XTR-65: −65 to +20 °C |
|---|---|
| Accuracy | ±2 °C (−100 to 0 °C dp); ±3 °C (0 to +20 °C dp) |
| Repeatability | ±0.5 °C |
| Response (−40 to −60 °C step) | 63% in 90 s; 90% in 450 s |
| Sensor temperature range | −30 to +50 °C |
| Sample flow | Static to 100 m/s |
| Pressure | Sensor fitting up to 340 bar (5,000 psi) |
| Filter | 100 µm stainless steel sintered filter |
Transmitter
| Display | Backlit 3.5-digit LCD, audible alert > 80 dB |
|---|---|
| Outputs | 4–20 mA, 0–24 mA or voltage, programmable span; RS-232 (9600 baud) |
| Alarms | Two relays 10 A / 240 V, programmable hysteresis, failure indication |
| Isolation | Sensor isolated from supply, analog output and RS-232 |
| Power | 100–240 V AC 50/60 Hz, or 12 V DC / 15–30 V DC 0.5 A |
| Enclosure | Polycarbonate NEMA 4/4X, 12 × 16 × 9 cm; or DIN 43700 panel mount |
| Electronics temperature | −10 to +50 °C |
| Options | Medical breathing air monitoring (NFPA 99); real-time clock for scheduled self-calibration |
Notes
| Data from the manufacturer's published datasheet. Confirm model, range, materials and approvals with Argonmark before ordering. |
Photo: courtesy of COSA Xentaur, used with permission (source) — background removed by Argonmark. All photo credits
Description
The COSA Xentaur XDT is a digital dew point transmitter for continuous monitoring of dryers, compressed air and dry process gases from ambient dew points down to −100 °C. Its HTF aluminium oxide sensor reads to ±2 °C below 0 °C dew point, responds quickly, and can be span-checked in the field in about a minute.
The backlit display shows dew point, ppmv or moisture content, and the unit offers 4–20 mA or voltage output, RS-232 and two 10 A alarm relays for dryer control or safety cut-off. It is available as an OEM board, panel-mount, NEMA 4 or explosion-proof version.
Argonmark Ltd supplies COSA Xentaur 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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