300-1200 C With Isothermal Block Temperature Sensor Thermocouple
Calibration Furnace
The PANRAN Calibration PR 320C thermocouple calibration furnace
provides the reliability, accuracy, and flexibility needed for
calibrating noble-metal thermocouples in secondary high-temperature
labs and instrument shops — ideal for aerospace, automotive,
energy, metals, and plastics industries. The wide temperature range
of 572 to 2192°F (300 to 1200°C), meets your high-temperature
calibration needs.
- Products model selection table
| No. | Name | Model | Temperature range | Furnace size | Dimension (mm) | Net Weight (kg) | Power (KW) | Isothermal block |
| 1 | Thermocouple calibration furnace | PR320A | 300~1200℃ | Φ40*600 | 700*370*450 | 26.1 | 2.5 | optional |
| 2 | Base metal thermocouple calibration furnace | PR320B | 300~1200℃ | Φ60*600 | 31.5 | 2.5 | / |
| 3 | Sheathed thermocouple calibration furnace | PR320C | 300~1200℃ | Φ40*600 | 27.3 | 2.5 | PR1142A |
| 4 | Thermocouple calibration furnace | PR320D | 300~1300℃ | Φ40*600 | 26.1 | 2.5 | optional |
| 5 | Base metal thermocouple calibration furnace | PR320E | 300~1200℃ | Φ40*600 | 27.3 | 2.5 | PR1145A |
| 6 | Short type Thermocouple calibration furnace | PR321A | 300~1200℃ | Φ40*300 | 310*255*290 | 11 | 3.0 | Optional |
| 7 | PR321C | Φ16*300 | 10.5 | 3.0 | / |
| 8 | PR321E | Φ40*300 | 12.4 | 3.0 | PR1146A |
| 9 | High temperature thermocouple calibration furnace | PR322A | 300~1500℃ | Φ25*600 | 620*330*460 | 45 | 3.0 | / |
| 10 | PR322B | 300~1600℃ | Φ25*600 | 43 | 3.0 | / |
| 11 | Thermocouple Annealing Furnace | PR323 | 300~1100℃ | Φ40*1000 | 1010*260*360 | 29.4 | 2.5 | / |
- Detailed technical parameters of the products
1. PR320A/D Thermocouple Calibration Furnace
| Model | PR320A | PR320D |
| Application | S,R standard thermocouple,working S,R precious and base-metal
thermocouple calibration (need to add PR1145A Isothermal block) |
| Temperature range | 300~1200℃ | 300~1300℃ |
| Furnace Size | Φ40mm*600mm |
| Temperature field center | Deviate from the geometric center does not exceed 10mm |
| Temperature field width | The temperature difference within 80mm ≤1℃ |
| Temperature field gradient | Add a coaxial cleaning porcelain tube of about 20mm shall be installed
in the furnace,Not exceed 0.4℃/CM within ±20MM range of temperature
field center |
2. PR320B Base metal thermocouple calibration furnace
| Application | base-metal thermocouple calibration |
| Temperature range | 300~1200℃ |
| Furnace Size | Φ60mm*600mm |
| Temperature field center | Deviate from the geometric center does not exceed 10mm |
| Temperature field width | The temperature difference within 60mm ≤1℃ |
3. PR320C Sheathed Thermocouples Calibration Furnace
| Temperature range | 300~1200℃ |
| Furnace Size | Φ40mm*600mm |
| Size of Isothermal block | Size Φ8mm*7pcs, depth 90mm |
| Temperature field indicators 1 (with Isothermal block) | From the bottom of Isothermal hole, the internal temperature
difference is ≤0.5 ℃ in the axial direction of 30mm, and the
absolute value of the temperature difference between any holes in
the same section is ≤0.25 ℃ |
| Temperature field indicators 2 (without Isothermal block) | The deviation between the center of the maximum uniform temperature
field and the geometric center of the furnace along the axis is
≤10mm;Within the range of a uniform temperature field with a length
of ≥60mm and a radius of 14mm, the temperature field between any
two points is ≤1℃ |
| Temperature field indicators 3 (with Isothermal block, use a coaxial cleaning porcelain tube
of about 20mm) | The maximum temperature point in the furnace is ≤20mm away from the
geometric center of the furnace, and the maximum temperature ±20mm
has a uniform temperature field with the temperature change
gradient ≤0.4℃/10mm |
| Implementation standard | , |
| Standard item | PR1142A Sheathed thermocouple calibration furnace Isothermal block |
| Optional item | Coaxial cleaning porcelain tube of Φ20mm |
4. PR320E Thermocouple Calibration Furnace
| Temperature range | 300~1200℃ |
| Furnace Size | Φ40mm*600mm |
| Size of Isothermal block | External Φ38mm, innerΦ28mm, depth 150mm |
| Temperature field indicators 1 (with Isothermal block) | Within the axial direction of the effective working area, the
absolute value of the temperature difference between any two points
is ≤0.5℃;Within the radial radius of ≥14mm, the absolute value of
temperature difference between any two points on the same section
is ≤0.25℃ |
| Temperature field indicators 2 (without Isothermal block) | The deviation between the center of the maximum uniform temperature
field and the geometric center of the furnace along the axis is not
exceed 10mm;Within the range of a uniform temperature field with a
length of ≥60mm and a radius of 14mm, the temperature field between
any two points is no more than 1℃ |
| Temperature field indicators 3 (with Isothermal block, but add a coaxial cleaning porcelain
tube of about 20mm) | The maximum temperature point in the furnace is ≤20mm away from the
geometric center of the furnace, and the maximum temperature ±20mm
has a uniform temperature field with the temperature change
gradient ≤0.4℃/10mm |
| Implementation standard | , |
| Standard item | PR1145A Sheathed thermocouple calibration furnace Isothermal block |
| Optional item | Coaxial cleaning porcelain tube of Φ20mm |
5. PR321A Short Thermocouple Calibration Furnace
| Model | PR321A | PR321C | PR321E |
| Temperature range | 300~1200℃ |
| Furnace size | Φ40mm*300mm | Φ16mm*300mm | Φ40mm*300mm |
| Application | Short type TC | Short S,R type | Short base metal |
| Temperature field indicators | PR321A: The temperature difference within 40mm ≤1℃ PR321C: The maximum temperature deviation furnace axial geometric
center shall ≤10mm, in the test deviation from the axial geometric
center of 20mm, the axial temperature gradient shall ≤0.4℃/mm PR321E: Including Isothermal block: the absolute value of the
temperature difference between any two points shall ≤1℃,and the
absolute value of the temperature difference between any two points
on the same section of the hole bottom shall ≤0.5℃, calculated from
the axial direction of the hole bottom within 30mm |
| Implementation standard | | JJG 668-1997 | Short base metal TC calibration |
6. PR322 Series High-temperature Thermocouple Calibration Furnace
| Model | PR322A | PR322B |
| Temperature range | 300~1500℃ | 300~1600℃ |
| Furnace size | Φ25mm*600mm | Φ25mm*600mm |
| Heating material | Silicon molybdenum rod | Platinum rhodium 30 |
| Cold resistance | About 0.1Ω | About 3.5Ω |
| Max current | 50A | 16A |
| Operating voltage | 20~50V | 50~180V |
| Control cabinet | PR351 | PR352 |
| Temperature field center | Deviate from the geometric center does not exceed 20mm |
| Temperature field indicators | the maximum temperature ±20mm has a uniform temperature field with
the temperature change gradient ≤0.5℃/10mm |
The PR322 series is equipped with a special power control cabinet:
1. Adopts patented multiple over-current protection, and is
provided with power-on soft start, heating current limitation,
freewheeling protection, automatic stop and other functions.
2. No manual voltage gear shift or meter adjustment is required for
power-on and heating process.
3. Equipped with RS485 and RS232 dual-communication connections.
4. Configured with ZRJ series calibration system software, the
functions of start/stop, real-time recording, parameter query
setting, etc. can be achieved.
5. While protecting the safety of the equipment, the manual
operation is greatly simplified.
7. PR323 Thermocouple Annealing Furnace
| Temperature range | 300~1100℃ |
| Furnace size | Φ40mm*1000mm |
| Temperature filed center | One end of the temperature field is <100mm from the furnace |
| Temperature field width | within 40mm ≤20℃ |
(Please note seal test or open test when ordering)
