Det-Tronics UD10 FlexVu Explosion-Proof Universal Display Unit User Manual
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4.2
specificAtions
oPERATinG VolTAGE—
24 Vdc nominal, operating range is 18 to 30 Vdc.
Ripple cannot exceed 0.5 volt P-P.
oPERATinG PoWER—
Standard model, with heater and backlight off:
No alarm:
1.5 watts @ 24 Vdc.
Alarm:
3 watts @ 24 Vdc (20 mA current
loop output, and all 3 alarm relays
energized.)
Backlight on:
0.5 watt additional.
Heater on:
3.5 watts additional.
CGS model:
Add 4 watts with CGS interface
board and CGS sensor installed.
Maximum power in alarm, with heater and backlight on:
7 watts @ 30 Vdc (Standard model)
11 watts @ 30 Vdc (CGS model)
noTe
Heater turns on when the internal temperature
drops below –10°C (default operation). Heater
function can be disabled to save power.
noTe
Appropriate relays will be activated when a fault
or alarm occurs.
CURREnT oUTPUT—
Linear isolated 4-20 mA output with HART.
3.8 mA indicates calibrate mode.
3.6 mA or less indicates a fault condition.
Maximum loop resistance is 600 ohms at 18 to 30 Vdc.
CURREnT oUTPUT RESPonSE TiME—
Toxic gas mode:
T90 ≤5 seconds.
Combustible gas mode:
T90 ≤4 seconds.
Combustible gas - open path mode: T90 ≤4 seconds.
UD10 with CGS:
T90 <12 seconds.
CURREnT oUTPUT ACCURACy—
Toxic gas mode:
<1% error.
Combustible gas mode:
<1% error.
Combustible gas - open path mode: ≤0.01 LFL-m.
UD10 with CGS:
±3% LFL 0-50 range,
±5% LFL 51-100 range.
RElAy ConTACTS—
Three Alarm Relays: Form C, 5 amperes at 30 Vdc.
Selectable energized/de-energized.
Selectable latching or non-latching.
Refer to Table 1 for range and
default settings.
WarnIng
When in non-latching mode, the control device
must latch the alarm output.
One Fault Relay:
Form C, 5 amperes at 30 Vdc.
Normally energized for no fault
condition with power applied.
RElAy RESPonSE TiME—
≤ 2 seconds.
WiRinG TERMinAlS—
14 to 18 AWG wire can be used.
oPERATinG TEMPERATURE—
–55°C to +75°C.
SToRAGE TEMPERATURE—
–55°C to +75°C.
HUMiDiTy RAnGE—
5 to 95% RH (Det-Tronics verified).
ElECTRo-MAGnETiC CoMPATibiliTy—
EMC Directive 2004/108/EC
EN55011 (Emissions)
EN50270 (Immunity)
DiMEnSionS—
See Figures 12 and 13.