| QuadGard
Modular 1-4 Channel Gas Detection Control Unit |
|
QuadGard wall-mounted control unit. Front View
|
|
| Specifications |
|
| Format | Slim wall-mounting cabinet |
| Dimensions (w.x.h.x.d) | 400mm x 350mm x 90mm |
| Ingress protection | IP54 (IP65 optional) |
| Cabinet material & finish | 1.5
mm thick mild steel, painted powder white |
| Weight | 10kg approx. |
| Display | 20
character x 2 line backlit LCD shows gas levels, alarm status & configuration options |
| Controls | Reset
  
push buttonsPower, Inhibit, Master alarms (MA1, MA2 & MA3) & Fault LEDs A1, A2 & Fault LEDs per channel |
| Alarm outputs | |
| Power supply board | 4
master alarms relays (fault + 3 common or voted alarms) |
| Channel boards | 3 alarm relays (A1, A2 + configurale fault, A1, A2 or A1/A2) |
| Alarm options | Manual
reset or auto reset Latching or non-latching Normally energized or energize on alarm |
| Terminals | Phoenix SMKDSP screw terminals |
| Maximum cable size | 1.5mm2 fine strand, 2.5 mm2 solid strand |
| Cable entries | 22
pre-formed 20mm knock-outs (11 top and bottom) |
| 24V unswitched output | Maximum 500mA |
| Relays | |
| Type | Single-pole changeover |
| Contact material | Silver alloy |
| Nominal switching capacity | 5A 250VAC, 5A 30V DC |
| Max. switching power | 1250VA, 150 W |
| Max. switching voltage | 250VAC, 100V DC |
| Max. switching current | 5A |
| Min. switching voltage | 10 V |
| Min. switching current | 100mA |
| TüV/VDE rating | 5A
250VAC (cos = 1)3A 250VAC (cos = 0.4)5A 30V DC |
| Audible output | >70dBA
(door closed) >90dBA (door open) |
| Analogue output | |
| Outputs | 4-20mA or 0-20mA |
| Maximum load | 500 Ohm |
| Resolution | 0.4% of full scale |
| Resolution & repeatability | |
| Signal resolution | 0.1% of fulll scale |
| Display resolution | Depends
on range: minimum 1% of full scale |
| Repeatability | 1% of full scale |
| Gas ranges, units & names | |
| Measurement ranges | 0-1,
0-2, 0-3, 0-4, 0-5, 0-10, 0-20, 0-25 0-30, 0-50, 0-100, 0-200, 0-250, 0-300, 0-500, 0-1000, 0-3000, 0-9999 + 1 user-definable |
| Measurement units | %LEL, %vol, %v/v, ppm, ppb, °C, %RH, %UEG, %LIE + 1 user-definable |
| Gas names | CH4, H2S, CO, O2, Cl2, SO2, NO, NO2, NH3, O3, CO2, CIO2, HCN, HCI, HBr, HF, H2, Br2, H2O2, EO, AsH3, PH3, B2H6, SiH4 + 1 user-definable |
| Supply voltage | 240
V AC ± 10 %, 50-60 Hz 120 V AC ± 10 %, 50-60 Hz 18-30 V DC |
| Power consumption (AC) | 50 W typical, 100 W maximum |
| Current consumption (DC) | 1.5A typical, 3A maximum |
| 4-20mA input channel board | |
| Head supply voltage | 24 V ± 10% |
| Head supply current | 250mA (max.) |
| Pellistor head channel board | |
| Head current | 100-400mA |
| Head supply voltage | 9V (max.) |
| Max. cable resistance | 10 Ohm per core @ 280mA |
| Input & output connections | |
| Power supply board | Mains input, master alarm relay (4off), 24 VDC input/output and remote reset facitlity |
| Channel boards | Measuring head input, alarm relays (3 off), 4-20 mA output |
| Operating conditions | |
| Temperature | -5 to + 40 °C |
| Humidity | 0-90% RH, non-condensing |
