Isotech Gemini 4857 large-volume dry block calibrator, 35 to 550 °C / 50 to 700 °C
Pricing depends on specification, quantity and delivery location. Send your requirement and we reply with a costed quotation within 24 hours.
Quick overview
- Type: Calibration equipment
- Signal / Protocol: USB
- 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-1440 |
| Category | Oil & Gas Instruments |
| Group | Instrumentation & Control |
| Brand | Isotech |
| Model | Gemini 4857 (550 / 700) |
| Technical | |
| Type | Calibration equipment |
| Signal / Protocol | USB |
| Hazardous area | General purpose |
Datasheet
Technical features
| High-capacity block calibrates many probes together and accepts large-diameter sensors | |
| Fixed block with 8 mm and 19.5 mm pockets, or LRI version with removable insert (eight 8 mm pockets) | |
| Optional metal sleeves for 4–14 mm sensors | |
| Advanced | reference and test inputs, cycling, secure logging, web server, colour display |
|---|---|
| Three-point traceable certificate included; UKAS optional | |
Applications
| Calibration of batches of thermocouples, RTDs and large-diameter sensors |
General
| Calibration volume | 65 mm Ø × 160 mm deep |
|---|---|
| Indicator units | °C, °F, K |
| Power | 600 W (LRI 1,000 W), 115 or 230 V AC 50/60 Hz |
| Dimensions | 384 H × 212 W × 312 D mm |
| Weight | 8.5 kg (550) / 14 kg (700) |
| Accessories | Sleeves, removable inserts, 24 V DC loop supply 935-06-161, PRT 935-14-72/DB, Type N thermocouple 935-14-63, wheeled case |
Key specifications
| Temperature range | 35 to 550 °C (Gemini 550) or 50 to 700 °C (Gemini 700) |
|---|---|
| Stability | ±0.02–0.04 °C (Basic/Site); ±0.01–0.03 °C (Advanced) |
| Display accuracy | 0.5 °C (6.5 mm well) |
| Calibration volume | 65 mm Ø × 160 mm deep |
| Versions | Basic, Site, Advanced; LRI removable-insert models |
| Power | 600 W (LRI 1,000 W), 115 or 230 V AC |
Performance
| Range | 35 to 550 °C (550) / 50 to 700 °C (700) |
|---|---|
| Stability, Advanced (30 min) | ±0.01 °C at 100 °C; ±0.015 °C at 300 °C; ±0.03 °C at 550 °C |
| Stability, Basic/Site (30 min) | ±0.02 °C at 50 °C; ±0.03 °C at 250 °C; ±0.04 °C at 550 °C |
| Display resolution | 0.01 °C |
| Display accuracy | 0.5 °C |
| Heating | 30 → 550 °C in 35 min (LRI 60 min); 50 → 700 °C in 110 min (LRI 120 min) |
| Cooling (550) | 550 → 275 °C in 35 min (LRI 132 min) |
Advanced input channels
| RTD input | ±0.005% of reading |
|---|---|
| Thermocouple input | E, J, K, N ±0.2 °C at 660 °C; R ±0.6 °C; S ±0.7 °C |
| CJC accuracy | ±0.35 °C |
| Interface | Ethernet + USB host (Basic/Site: serial) |
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 Gemini 4857 is a high-capacity dry block calibrator with a 65 mm × 160 mm block, so many probes or large-diameter sensors can be calibrated together. The Gemini 550 covers 35 to 550 °C and the Gemini 700 covers 50 to 700 °C, with stability down to ±0.01 °C in the Advanced version.
It comes with a fixed block or, in LRI models, a removable insert, and in Basic, Site or Advanced versions with reference/test inputs and data logging.
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.
Questions & answers
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