DBC Series
DBC Series Dry Block Temperature Calibrators
Five models, −30 °C to 1200 °C
Five dry-block calibrators covering −30 °C to 1200 °C between them. Each heats a solid metal block to a controlled set point so RTDs, thermocouples, thermistors, bi-metal and liquid-in-glass sensors can be checked against a stable reference without a stirred liquid bath.
Three-quarter view · 5.7-inch touchscreen
Why choose a DBC dry block
A dry block reaches a usable set point faster than a stirred bath, carries no fluid to spill or change, and travels to the sensor rather than the other way round.
−30 °C to 1200 °C
Five models between them cover sub-zero work and high-temperature thermocouple calibration.
Stability to ±0.02 °C
Temperature field stability on the low-temperature models, with horizontal uniformity to ±0.05 °C.
135 mm to 165 mm deep
Insertion depth that lets the whole sensing element sit inside the uniform zone of the block.
5.7-inch touchscreen
Full touch operation for set point, heating and cooling, in Chinese or English.
Model range
The temperature range is fixed at manufacture, so choose the model that spans the set points you actually calibrate.
| Model | Part no. | Class | Temperature range | Display accuracy | Stability | Insertion depth | USB |
|---|---|---|---|---|---|---|---|
| DBC-150A | 800150 | Low | −20 °C to 150 °C | ≤±0.1 °C | ≤±0.02 °C | 165 mm | Optional |
| DBC-150B | 800151 | Low | −30 °C to 150 °C | ≤±0.1 °C | ≤±0.02 °C | 160 mm | Optional |
| DBC-650 | 800650 | Medium | 50 °C to 650 °C | ≤±0.35 °C to 400 °C ≤±0.5 °C, 400–650 °C |
≤±0.05 °C | 150 mm | Optional |
| DBC-1200 | 801200 | High | 300 °C to 1200 °C | ≤±1.2 °C | ≤±0.2 °C | 135 mm | Optional |
| DBC-1200B | 801201 | High | 100 °C to 1200 °C | ≤±1.2 °C | ≤±0.2 °C | 135 mm | Standard |
The DBC-1200B extends the low end of the high-temperature range down to 100 °C and is fitted with a USB device interface as standard.
Insertion depth and soaking blocks
Sensors are calibrated by lowering them into a replaceable soaking block that sits in the well on the top face of the instrument. The block, not the air around it, is the reference, so the accuracy you get depends on how much of the sensing element is inside the uniform zone and how well the probe fits its aperture.
- Fit the right block. Each model ships with an interchangeable soaking block. The aperture pattern is specified when you order, and custom apertures can be machined.
- Insert to full depth. Depths run from 135 mm to 165 mm depending on model. The whole sensing element and a length of stem should sit below the top of the block.
- Match reference and unit under test. Put both probes in at the same depth in adjacent apertures so they see the same part of the field.
- Soak, then read. Allow the block to hold the set point for around ten minutes before comparing readings.
Vertical uniformity is ≤1 °C within 30 mm of the base of the well on most models, and within 10 mm on the DBC-1200B. Operate the instrument upright and leave clearance above it so probes can be inserted and withdrawn safely.
| Model | Insertion depth | Block diameter | Well pattern |
|---|---|---|---|
| DBC-150A | 165 mm | 36 mm | Ø6 / 8 / 10 / 12 mm |
| DBC-150B | 160 mm | 32 mm | Ø6 / 8 / 8 / 10 mm |
| DBC-650 | 150 mm | 32 mm | Ø8 / 10 / 12 mm, or Ø6 / 6 / 8 / 8 mm — choose one at order |
| DBC-1200 | 135 mm | 39 mm | Ø6 / 8 / 10 / 12 mm |
| DBC-1200B | 135 mm | 39 mm | Ø6 / 8 / 10 / 12 mm |
Technical specifications
| Specification | DBC-150A | DBC-150B | DBC-650 | DBC-1200 | DBC-1200B |
|---|---|---|---|---|---|
| Heating times | 25→50 °C: 6 min 50→100 °C: 15 min 100→150 °C: 20 min |
50→300 °C: 7 min 50→650 °C: 30 min |
25→100 °C: 10 min 100→600 °C: 15 min 600→800 °C: 20 min 800→1200 °C: 30 min | ||
| Cooling times | 25→0 °C: 15 min 0→−20 °C: 15 min |
25→0 °C: 15 min 0→−20 °C: 15 min −20→−30 °C: 22 min |
— | — | — |
| Horizontal temperature field | ≤±0.05 °C | ≤±0.05 °C | ≤±0.05 °C | ≤±0.25 °C | ≤±0.25 °C |
| Vertical temperature field | ≤1 °C within 30 mm of the base of the well | ≤1 °C within 10 mm | |||
| Maximum power | 300 W | 300 W | 1200 W | 3000 W | 3000 W |
| Net weight | 11 kg | 11 kg | 11 kg | 8 kg | 8 kg |
| Gross weight | 18.5 kg | 18.5 kg | 18.5 kg | 16 kg | 16 kg |
| Dimensions (w × d × h) | 310 × 190 × 340 mm | 250 × 150 × 310 mm | |||
| Display | 5.7-inch TFT colour LCD, full touch operation, Chinese and English | ||||
| Resolution | 0.01 °C · 0.001 °C available to order | ||||
| Power supply | 220 V AC ±10%, 45 to 60 Hz, single phase | ||||
| Operating environment | 0 °C to 50 °C, ≤95% RH non-condensing | ||||
| Protection | Load short circuit, load open circuit and sensor protection | ||||
| Warranty | 1 year, subject to product registration with GPS LTD | ||||
The DBC-1200 and DBC-1200B draw up to 3000 W. Check the supply and protective device rating before installing on a standard 13 A socket circuit.
Where the DBC Series is used
Process plant
Chemical, petrochemical and utilities maintenance, verifying RTDs and thermocouples on reactors, heat exchangers and pipework.
Food and beverage
HACCP checks, pasteurisation and cold chain equipment, where records have to be traceable.
Pharmaceutical
Validation probes for autoclaves, lyophilisers and stability chambers.
Laboratories
Calibration laboratories, research institutes and teaching, as a bench temperature source.
What’s in the box
- DBC main unit, temperature range as ordered
- Interchangeable soaking block, well pattern as ordered
- Insert removal tool
- Mains lead
- Aluminium transit case
- User manual and warranty details
Calibration certification is available on request. Ask us to quote a traceable certificate with the instrument.