Load Reduction Test System LR 8000

The Control Cabinet is equipped with a PAC unit (Programmable Automation Controller) and Touch-Screen Control System with specific software designed in order to comply with different standards.

Recording and Data Logging of all main system variables is available on external memory drive (USB).

 

All the messages, alarms and information on the status of the system are displayed on the Touch Screen unit.
The Touch Screen Unit is directly connected to the I/O Unit where all the signals, coming from the measuring instruments, are collected and processed.

The main Page (Home Page) displays the complete information about the status of the system and the following process variables:

• Sample temperature
• Sample weight
• Sample height
• Differential pressure on sample bed
• Degree of reduction Rt
• Oven temperature
• Nitogen (purge gas) flow rate
• Reacting gas Mix flow rate
• Loading pressure over the sample
• Total Test time from the start of the reaction

All these variables are available also in a graphic format in which all parameters are displayed vs. time.

The system is equipped with an Electric Vertical oven of about 12 kW maximum power. The oven design includes 3 horizontal heating zone. Each heating zone is constituted by silicon carbide heating elements electrically connected in series.

A quartz tube is placed inside the oven to avoid any contact between the reaction tube and the heating elements. An external alarm thermocouple is placed in the refractory wall to monitor the oven temperature.

This thermocouple is connected to the safety temperature circuit in order to avoid any over temperature. The maximum allowed temperature is set to 1200 °C. The vertical electric oven is equipped with a precision weighing system with a resolution of 0,1 g and a full scale value of 32 kg.

The Printing Tool is a Windows© software that allows to print, save and store all data of performed tests.
At the end of the test procedure, a new file is stored in the external memory USB stick.

RUL Test Printing Tool
RUL Test Printing Tool

Test results are displayed in both textual and graphical format. A spreadsheet layout is also available.
The printing feature of the Software allows to print out the test results as prescribed in the ISO procedures.

	ISO 7992 RUL	ISO 11256 Clustering	Sticking HYL
OVEN
Max Operation	power 12 kW
Max operating temperature	1200 °C
Heating elements	Silicon carbide elements (12 elements)
Inner Chamber diameter	200 mm
SAMPLE WEIGHTING SYSTEM
Max Weight	30 kg
Resolution	0,1 g
HEAD MEASURING DEVICE
Differential pressure transducer	0 – 20 mbar	——	—–
Linear transducer	0 – 75 mm	——	—–
Sample loading max	100 kg displayed kPa	250 kg displayed kPa
REACTION TUBE
Reaction tube	“double wall” type
Material	AISI 310
TEST DATA
Sample Mass	1,2 kg	2.0 kg	1.2 kg
Pellet size	10-12,5 mm	50% 10 – 12,5 mm 50% 12,5 – 16 mm	50% 9,5 – 12,7 mm 50% 12,7 – 15,9 mm
Test Temp (C°)	1050 ± 10 °C	850 ± 5 °C	950 ± 5 °C
Reduction Time	Until 80% reduction	60 min + time until 95% reduction	Until 90% reduction
Gas Composition Mix	D	F	S
Gas Flow rate (nL/min)	83 ± 1 nl/min	40 ± 0.5 nl/min	55 ± 0.5 nl/min
MAIN POWER:	380 V 3 Ph + Neutral (12 kW max)

 

Gas Mix Composition %
MIX	N2	CO	CO2	H2	CH4
D	58	40	—	2	—
F	10	30	15	45	—
S	10	21	14	55	—