Delta Elektrogas LD, LDM Tightness Control Device

The LD/LDM tightness control device is designed to verify the absence of inadmissible leaks in gas trains composed by automatic shutoff valves. The check can be performed before the ignition of the gas burner or after its stop. This device is used in industrial firing processes and in forced draught burners, when power is higher than 1200 kW, according to EN 746-2 and EN 676.

 

Feature

• Microcontroller technology
• Easy-to-see status of the device through high visibility LEDs
• Easy accessible reset button
• Adjustable test time to meet the plant needs
• Adjustable test instant
• Available Ex-proof version with metal enclosure for installation in Zone 2 and 22 (ATEX)
• Available with integrated pressure switches and/or integrated auxiliary valves
• Designed and manufactured according to EN 1643

Specification

Voltage	230VAC 50/60Hz 110-120VAC 50/60Hz 24V DC
Voltage tolerance	-15% / +10%
Power absorption	10 VA (1W for 24V DC) Integrated valves 2×21 VA
Ambient temperature	-15°C / +60°C
Enclosure	IP54 (LD) IP65 (LDM)
Cable gland	PG9 for cable Ø6 / 8 mm PG16 for cable Ø10 / 12 mm ISO 4400 plug PG11 for cable Ø8 / 10 mm
Wires cross-section	2,5 mm2 max
Fuse (replaceable)	5 A (slow-acting)
Output signals	5 A max. resistive 2 A max. inductive
Reset signal	applying mains voltage
Test period	10 s / 90 s adjustable
Filling/ Discharge time	3 s
Max. Working pressure	500 mbar (50 kPa)
Connections	Rp 1/4
Gas type	Non-aggressive gases included in the 1, 2 and 3 families (EN 437)
Integrated pressure switch	Comply with EN 1854
Integrated solenoid valves	Comply with a EN 161, class A
Weight	LD1 450 gr LDM2 1200 gr LD3 1600 gr LDM4 2100 gr

Download Datasheet: Delta Elektrogas LD-LDM