9 Product Specifications
- 37 -
Weight
Approx. 2.5kg
Material
SECC or SS304
Paint
Bake-coated with melamine
Outer color
Munsell 2.5Y9/2
＜
Oxygen Deficiency Alarm) SPECIFICATION
＞
Model
GD-F88Di
Detection principle
Galvanic cell method
Gas to be detected
O2
Concentration display
7-segment LCD (4 digits)
Detection range
0～25vol%
Detection method
Aspirator suction method
Sampling condition
Atmosphere equivalent(Compressed air:0.1～0.7MPa)
Suction flow
0.5L/min±10%
Alarm preset point
*1
18vol%(1st<L>)【Standard】
18vol%(2nd<LL>)【Standard】
Indicate accuracy
*2
(under an identical condition)
Within ±0.7vol%
Response time
*2
(under an identical condition)
Within 30sec(T90)(excluding delay in the tube)
Alarm-delay time
*2
(under an identical condition)
By anoxia alarm(Alarm setpoint value:18vol%), Within
5sec(when introducing 10～11vol% gas)
Gas alarm type
Two-step alarm (L-LL)
Gas alarm indication
Alarm message(AL1/AL2)
Gas alarm action
*1
Latching or non latching
Trouble alarm･Self diagnosis
System failure/Sensor failure
Trouble alarm indication
Content display
Trouble alarm action
Non latching
Transmission method
2-wire analog trans digital transmission (HART
communication)
Transmission specifications
4-20mADC (load resistance: 300Ω or less)
Communication scheme
HART 7
Power supply
24VDC±10%
Power consumption
Approx. 0.6W
Transmission cable
Shielded cable of CVVS, etc. (1.25mm
2
) - 2-core
Transmission distance
Up to 1km with CVVS 1.25 mm
2
(up to 600m between the detector
head and Zener Barrier)
Safety maintaining device
*3
Zener Barrier (MTL7728ac//MTL7728-) or
insulating barrier (MTL5541/RN-221N-EJ/KFD2-STC4-Ex1)
Piping port
Gas inlet/Gas outlet:Rc1/4(O.Dφ6-1t half-union for Teflon
tube<material:PP>supplied)
Compressed air inlet<material:SS303>:Rc1/4
Operating temperature
-10 - 40℃ (non-rapidly-vary)
Operating humidity
Less than 95%RH (non-condensing)
Structure
Wall mounted type
Explosion-proof structure
Intrinsically safe explosion-proof structure, with safety
maintaining device (barrier) used
Explosion-proof class
Exia
Ⅱ
CT4X
External dimensions
Approx. 220(W)x265(H)x90(D)mm (projection portions excluded)
Weight
Approx. 4kg
Material
*1
SECC or SS304
Paint
Bake-coated with melamine
Outer color
Munsell 2.5Y9/2
