Riken Keiki PT2-178, Operating Manual

Page: 58 / 63

10 Product Specifications 10-1. List of specifications
- 56 -
[SD-1DEC-AS] <TIIS Specifications>
Model SD-1DEC-AS
Detection principle
Electrochemical method
Detectable gas H2S/CO
Applicable gas
detector head SD-1DEC
Gas concentration
display
LED(4digits ・ 7segments)
Measuring range
H2S
：
0 - 30ppm or 0 - 50ppm or 0 - 100ppm
CO ： 0 - 75ppm or 0 - 150ppm or 0 - 200ppm or 0 - 250ppm or 0 - 300ppm
Detection method Suction method(pour into by external unit)
Suction flow 1.5±0.1L/min
Alarm preset point Depend on Detectable gas
Power indication POWER lamp lighting(green)
Output Gas concentration signal
Alarm contact(Gas alarm or Trouble alarm or Gas
・ Trouble common alarm)
Alarm accuracy
(under an identical condition)
Less than ±30% to the alarm setpoint value
Alarm-delay time
(under an identical condition)
Less than 30sec(when introducing 1.6 times thicker gas than alarm preset point)(without
piping delay time)
Gas alarm type Single alarm(H)
Gas alarm indication ALM lamp lighting(red)
Gas alarm action Auto-recover
Trouble alarm ・ Self
diagnosis
System failure/Sensor failure
Trouble alarm indication FAULT lamp lighting(yellow)/content display
Trouble alarm action
Auto-recover
Alarm contact No-voltage contact 1a
Non-exciting at normal(exciting at alarm) or exciting at normal(non-exciting at alarm)
Contact capacity 250VAC - 0.5A/30VDC - 0.5A(resistive load)
Transmission scheme Three-wire analog transmission
(in common with power supply<power supply,signal,common>)
Specification of
transmission 4 - 20mA DC (linear/load resistance less than 300 Ω )
Transmission cable
CVVS1.25 mm
2
or 2.0mm
2
- 3-core(when the contact is not used)
CVVS1.25 mm
2
or 2.0mm
2
- 5-core(when the contact is used)
Transmission distance
Less than 1.25km in case of CVVS 1.25mm 2
Less than 2.0km in case of CVVS 2.0mm 2
Power supply 24 VDC±10%
Power consumption MAX.1.1W
Cable connecting port
Flame proof packing method<G3/4>(Compatible cables φ 9.6 ～ 13.0mm in outer
diameter )
Tube connecting port Gas IN: Rc1/4 (O.D ø6-1t, half-union for PTFE tube <PP> supplied)
OUT: O.D ø8-1t, flare union for Cu tube <Bs>
Compressed air IN: O.D ø8-1t, flare union for Cu tube <Bs>
Initial clear Approx.25sec
Operating temperature
-10 - +40
℃
(non-rapidly-vary)
Operating humidity 30 - 80%RH(non-condensing)
Structure Wall mounting sampling unit
Explosion-proof
structure Flame proof structure
Explosion-proof grade
Ex d
Ⅱ
C T6 X(TIIS<Japan>)
Outer dimension Approx.400(W)×265(H)×102(D)mm(projection excluding)
Weight Approx.5.9kg
Color Munsell
7.5BG5/2
*
When a half-union for gas IN side is changed, check also the external filter (IN/OUT diameter) carefully.