Troxler 4140 Manual

(Asphalt Content Ignition Oven)
Verify the Scale:
➔
The oven chamber must be at room temperature to verify or calibrate the scale. (The oven
must be switched on but the door must be open). The elements will not switch on when the
door is open.
➔
Press Menu (Main Menu)
➔
Press (5) – Scale Menu
➔
Press (3) – Verify
➔
The hearth plate must be on the rails in the correct position.
➔
Display – Do you want to take the scale?
➔
(Yes)
➔
Display – Enter mass value (2000 – 5000 g) e.g. 3000 g
➔
Enter
➔
Display – Place mass on scale, then press Enter – system will delay 60 seconds.
➔
Enter
➔
The oven verifies accuracy, computes % error and displays result
➔
To print result (Yes)
➔
Error % less than ± 0,1% (some say ± 0,025%) is within spec and oven
➔
Returns to scale menu.
➔ Error % greater than ± 0,1% (some say ± 0,025%) display – do you want to calibrate?
➔
(No) – If you don't want to calibrate or if you want to re-check
➔ To calibrate – Page 6 – 17 of the manual
➔
(Read this before you do it)
Important Tips:
➔
We assume that the NTO is firm on the surface that it rests and was not bumped during
verification.
➔
The NTO was installed correctly and level.
➔
If there are calibrated weights available use them to verify (2000 – 5000g)
➔
If there is an electronic balance, which is used to weigh the asphalt samples, check for a
calibration tag.
➔
Double check the calibrated weights on the balance.
➔
If there are no calibration weights available – place ZDR briquettes on a tray. Spread them
apart evenly on they tray, as the sample would be. Get the mass on the balance (including
the tray) and use this.
Manual – NTO Oven
TROXLER NTO OVEN
Accuracy (Manual Page 6 – 15)
2024/04/27
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