RKI Instruments GD-70D Series - Manual (Page 13)

1 Overview 1-5. Units description
- 13 - GD-70D
Semiconductor
type (SGU)
• Before using the sensor unit, it needs to be warmed up for a specified time.
The sensor unit is warmed up sufficiently in our factory before it is delivered to
you. Therefore, after you receive the sensor unit, please use it as soon as
possible so that unpowered time is minimized.
• The warm-up (powered) time before using the sensor unit is related to the
unpowered time.
Suggested powered time Unpowered time
SGU-8541 (H2) SGU (Others)
10 minutes or less 10 minutes or more 2 hours or more
1 hour or less 30 minutes or more 2 hours or more
24 hours or less 1 hour or more 4 hours or more
72 hours or less 4 hours or more 24 hours or more
10 days or less 2 days or more 2 days or more
Less than 1 month 7 days or more 7 days or more
Less than 3 months 14 days or more 14 days or more
3 months or more 1 month or more 1 month or more
• To store the sensor unit under unpowered state, it must be stored under
normal temperature/humidity in a clean place away from direct sunlight.
Galvanic cell type
(OSU)
• Do not disassemble the sensor unit because it contains electrolyte. If contact
occurs, rinse the area immediately with a large quantity of water.
• The sensor unit must be stored under normal temperature/humidity in a clean
place away from direct sunlight.
After detaching the sensor unit, push down to open the pump stopper. Pinch the part labeled "PULL" at the
top of the pump unit, and pull it out.
When attaching the pump unit to the main unit, position the
grooves of the pump unit at the rails of the main unit and push the
pump unit.
Do not push the center diaphragm. Push the part labeled "PULL".
And as the connecting point (flow path) of the pump unit is
greased, be sure to check for any dust.
connection
(flow path)
×
Do not push here. "PULL"
groove rail