10 Product Specifications
10-1. Product specifications
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10
Product Specifications
10-1. Product specifications
Specification
Model: OHC-800
Measuring principle:
Opt-Sonic calculation through measurement of refractive index and
sound speed
Measuring gas:
See "Measuring gas specification sheet" attached.
Measuring targets:
Calorific value, density (specific gravity), and WOBBE index
Measuring range:
See "Measuring gas specification sheet" attached.
Measuring method:
Constant-flow-rate gas introduction using external sampling devices
Self-monitoring/diagnostic
function:
Status monitoring using four classification categories
FAILURE
FUNCTION CHECK
MAINTENANCE REQUIRED
OUT OF SPECIFICATION
Display:
Full-dot LCD (with backlight)
Lamps
Green:
Lights up at power on.
Orange: Lights up in conjunction with Contact Output 1.
Red:
Lights up in conjunction with Contact Output 2.
Green:
Lights up in conjunction with Contact Output 3.
External Output 1:
4 - 20 mA DC (insulated, source current type) maximum load
resistance of 300
Ω
, minimum resolution under 0.01 mA
External Output 2:
RS-485 (MODBUS) communication function
External Output 3:
IrDA communication output (for maintenance)
Contact Output 1:
Activated if the FUNCTION CHECK or OUT OF SPECIFICATION
condition is met.*
[No-voltage contact, contact capacity of 2 A, 30 VDC (resistance load)]
Contact Output 2:
Activated if the FAILURE condition is met.*
[No-voltage contact, contact capacity of 2 A, 30 VDC (resistance load)]
Contact Output 3:
Activated if the MAINTENANCE REQUIRED condition is met.*
[SSR contact, contact capacity of 20 W, 240 VAC (resistance load)]
How to operate:
Operation using a magnet control key
(The calorimeter can be operated while maintaining the
explosion-proof performance.)
Power supply:
100 - 240 VAC ±10%, 50/60 Hz, max. 18 VA or 24 VDC ±10%, max. 5
W (The setting can be changed to either the AC or DC specifications.)
Protection class:
Equivalent to IP66 or IP67
Ambient temperature:
(at a constant condition)
Japanese explosion-proof spec.
：
-20 to +57°C()
