The ETC range provides the ideal dry block temperature calibrator when time is the critical factor and the highest accuracy is not a requirement. The block heats up to 100°C per minute and stabilizes in just 3 minutes.

Jofra ETC Range
Temperature ranges
ETC-125 A -10 to 125°C / 14 to 257°F
ETC-400 A 28 to 400°C / 82 to 752°F
ETC-400 R 28 to 400°C / 82 to 752°F
Fast calibration saves money
Heats up as quickly as 100°C / 212°F per minute and stabilizes in just 3 minutes. Completes a 2-point test in less than 10 minutes
Extreme flexibility
The small size makes it perfect to store in a tool box and to check temperature sensors that are difficult to access
Fully-featured despite the small size
The multi-information display shows actual and set temperatures, a stability indicator, and a stability countdown timer
Timesaving features
Fast one-key-one-function access to set the temperature and the auto-stepping function
Heats up by up to 100°C / 212°F per minute and completes a full dual point test in less than 10 minutes, including stability time; time savings at your fingertips! The ETC- series is designed for field testing of temperature measurement devices.
The small size and light weight make it a perfect instrument to verify sensors in difficult to reach places.
All JOFRA ETC units have many of the same useful and time saving features offered in the more advanced JOFRA dry-block series.

Selection Guide
ETC-125 A | ETC-400 A | ETC-400 R | |
---|---|---|---|
RANGE |
-10 to 125°C / 14 to 257°F |
28 to 400°C / 82 to 752°F |
28 to 400°C / 82 to 752°F |
STABILITY | ±0.05°C | ±0.15°C | ±0.3°C |
ACCURACY | +0.5°C | +0.5°C | +0.5°C |
HEATING TIME (APPROXIMATELY) |
-10 to 23°C / 14 to 73°F ~ 3 mins 23 to 100°C / 73 to 212°F ~.11 mins 100 to 125°C / 212 to 257°F ~ 7 mins |
28 to 200°C / 82 to 392°F ~ 2 mins 200 to 400°C / 392 to 752°F ~ 3 mins |
28 to 200°C / 82 to 392°F ~ 2 mins 200 to 400°C / 392 to 752°F ~ 3 mins |
COOLING TIME |
125 to 100°C / 257 to 212°F ~ 1 minute 100 to 0°C / 212 to 32°F ~ 17 minutes 0 to -10°C / 32 to 14°F ~ 14 minutes |
400 to 200°C / 752 to 392°F ~ 6 minutes 200 to 50°C / 392 to 122°F ~ 15 minutes |
400 to 200°C / 752 to 392°F ~ 9 minutes 200 to 50°C / 392 to 122°F ~ 24 minutes |
WELL SIZES | Standard 1x 4mm, 1x 6mm, 1x 8mm, 1x 12.5mm (see data sheet for more options) | Standard 1x 2mm, 1x 3mm, 1x 4mm, 1x 6mm (see data sheet for more options) | Standard 1x 2mm, 1x 3mm, 1x 4mm, 1x 6mm (see data sheet for more options) |
PHYSICAL DIMENSIONS L x W x H |
172 × 72 × 182 mm / 6.8 × 2.8 × 7.2 in |
172 × 72 × 182 mm / 6.8 × 2.8 × 7.2 in |
172 × 72 × 182 mm / 6.8 × 2.8 × 7.2 in |
WEIGHT | 1.8 kg / 3.9 lb | 1.6 kg / 3.5 lb | 1.7 kg / 3.7 lb |
CERTIFICATE PROVIDED | Traceable | Traceable | Traceable |
DATASHEET | Download here | Download here | Download here |