Isotech Hydra 798 stirred liquid calibration bath, −80 to 300 °C, 300 mm immersion
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Quick overview
- Type: Calibration equipment
- Hazardous area: General purpose
- 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-1490 |
| Category | Oil & Gas Instruments |
| Group | Instrumentation & Control |
| Brand | Isotech |
| Model | Hydra 798 (798L, 798M, 798H, 798EHT) |
| Technical | |
| Type | Calibration equipment |
| Hazardous area | General purpose |
Datasheet
Technical features
| Parallel tube action | liquid rises at the back and flows down the working volume, giving very small vertical and axial gradients |
|---|---|
| 300 mm immersion meets the depths recommended in the BIPM Supplementary Information to ITS-90 | |
| Circular calibration volume with no cold corners; only 5 L of liquid to fill | |
| Heating by a large nickel-foil heater outside the container; built-in cooling around the volume | |
| Commercial-grade ⅓ hp chillers; ambient to −80 °C in under 130 minutes (798L) | |
| Cooling coil for external cold water or gas on 798H and 798EHT | |
| Over-temperature cut-out; accessories for thermometer support, equalizing blocks and fixed-point cells | |
Applications
| Comparison calibration of liquid-in-glass thermometers, PRTs and thermocouples in laboratories | |
| Maintaining ITS-90 fixed-point cells (mercury, gallium, indium) | |
| 121 °C sterilization-temperature checks |
Key specifications
| Temperature range | −80 to 300 °C across four models |
|---|---|
| Stability | ±0.015 to ±0.030 °C |
| Vertical uniformity | ±0.002 to ±0.005 °C |
| Calibration volume | 150 mm Ø × 300 mm deep (5 L) |
| Interface | Serial, PC cable and software included |
| Power | 800 W to 2.5 kW, 110 or 230 V |
General
| Calibration volume | 150 mm diameter × 300 mm deep, 5 litres |
|---|---|
| Heating time | 25 to 200 °C < 60 min (C10 oil) |
| Cooling time | Ambient to −80 °C < 130 min (methanol, 798L) |
| Communications | Serial interface, PC cable and software included |
| Dimensions | 405 W × 610 D × 940 H mm (870 mm to top panel) |
| Safety | CE |
| Accessories | Sensor holder for 12 sensors 3–8 mm; aluminium or copper equalizing blocks (4 × 8 mm, 160 mm deep); dual cell holder; mercury, water, gallium and indium fixed-point cells |
Models
| Parameter | 798L | 798M | 798H | 798EHT |
|---|---|---|---|---|
| Temperature range | −80 to 125 °C | −40 to 125 °C | 30 to 200 °C | 30 to 300 °C |
| Absolute stability | ±0.030 °C (methanol, −80 °C) | ±0.017 °C (methanol, −40 °C) | ±0.015 °C (oil, 125 °C) | ±0.015 °C (oil, 250 °C) |
| Vertical uniformity | ±0.002 °C (oil, 50 °C) | ±0.002 °C (oil, 50 °C) | ±0.002 °C (oil, 125 °C) | ±0.005 °C (oil, 200 °C) |
| Power | 2.5 kW | 1.5 kW | 800 W | 800 W |
| Supply | 110 or 230 V 50/60 Hz | 110 or 230 V 50/60 Hz | 110 or 230 V 50/60 Hz | 110 or 230 V 50/60 Hz |
| Weight | 59 kg | 46 kg | 33 kg | 33 kg |
Notes
| Data from the manufacturer's published datasheet. Confirm model, range, materials and approvals with Argonmark before ordering. |
Photo: courtesy of Isotech, used with permission (source) — background removed by Argonmark. All photo credits
Description
The Isotech Hydra 798 is a family of stirred liquid baths for precise comparison calibration of thermometers from −80 °C to 300 °C. A circular 150 mm × 300 mm working volume, deep enough for the immersion depths recommended for ITS-90, is fed by parallel tube flow, giving vertical uniformity of ±0.002 °C and stability of ±0.015 to ±0.030 °C depending on model.
Four models cover −80 to 125 °C (798L), −40 to 125 °C (798M), 30 to 200 °C (798H) and 30 to 300 °C (798EHT). It needs only 5 litres of liquid, includes serial PC software, and accepts accessories for thermometer support, equalizing blocks and fixed-point cells.
Argonmark Ltd supplies Isotech 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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