Riken Keiki GD-3EC, Technical Manual

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10. Product Specifications 10-1 SD-3 specifications
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10
Product Specifications
10-1 SD-3 specifications
10-1-1 SD-3 (model without EC barrier)
Model SD-3 SD-3 (contact model)
Specifications Standard Contact
Display 7-segment LED (5 digits)
Sensor F sensor (Riken Keiki)
Detection principle Infrared/electrochemical/new ceramic/semiconductor/hot-wire semiconductor
Detection target gas Depends on sensor specifications.
Detection range Depends on sensor specifications.
Sampling method Diffusion type/suction type (introduced via external unit)
Set flow rate 0.4 - 1.5 L/min
Power supply
indication
Power lamp lit (green)
External output Gas concentration signal (4 - 20 mA DC + HART output)
Alarm setpoints Depends on sensor specifications.
Alarm accuracy Depends on sensor specifications.
Alarm delay time Depends on sensor specifications.
Repeatability (for
identical conditions)
Depends on sensor specifications.
Indication accuracy
(for identical conditions)
Depends on sensor specifications.
Gas alarm type Two-step alarm (H-HH, H-L, or L-LL)
Gas alarm
indication
Alarm lamp lit (red)
Gas alarm reset
operation Auto reset or self-latching
Fault alarm/self
diagnosis
System abnormality (E-9)/sensor abnormality (E-1)
Fault alarm
indication
Fault lamp lit (yellow)/error code display
Fault alarm reset
operation
System abnormality: Self-latching
Sensor abnormality: Auto reset (self-latching if sensor is disconnected)
Contact operation ―
SPDT (× 3):
2 alarms, 1 fault output
250 V AC, 2 A; 30 V DC, 1 A (resistance
load)
Minimum load 5 V DC, 0.1 A
Warnings
Sensor life assessment/clock abnormality diagnosis/communication diagnosis/
sensor warning
Warning display Blinking display alternating between gas concentration and error code
Warning operation Same as normal operation
Functions Alarm delay/suppression/HART communication