7-1
I4-1
OPERATOR’S MANUAL FOR INFANT INCUBATOR
EDITION/REVISION B/1
SECTION 7
HUMIDITY CONTROL SYSTEM
7.1 GENERAL
This section provides operation and checkout procedures and operation manual about
humidity control system.
7.2 FUNCTION DESCRIPTION
When the humidifying system is on working, user can set the humidity control value in
therange from 0% to 90%RH. The deviaton alarm value is ±15%RH. In the humidity steady
condition, the incubator will alarming if the humidity is higher or lower than the setted value.
Vapour produced when the water in the humidity chamber flow by the heat pipe on the
bottom of the chamber, enters into the hood by vapour letout. The humidity control system enable
the humidity increasing inside the chamber. The evaporating speed decided by the power of the
heater. There’s a humidity sensor in thside the sensor modular of the hood which adjust the
output power of the evaporator. The details of alarm message, please see the table 3.1. If the
alarms about humidity are actived, press the Silence/Reset key to stop alarming for about 4
minute, the power of the temperature heater is not cut off, the power of the humidity heater will
automatic cut off when the “High Humidity” alarm is actived.
7.3 OPERATION AND CALIBRATION PROCEDURES
A. Raising the water in humidity chamber to the highest level, place a calibrated humidity
analyzer in the middle 10cm of the bassinet.
B. Prewarm the incubator to 36℃, set the humidity value to 50%.
C. Waiting until the value in the indicator to 50%RH, the Humidity indicator should display
50%RH±10%RH.
D. Check the humidity deviation alarm
Turn the controller on, in the condition of starting the Humidity indicator, it should display the
value detected by humidity sensor. When the humiditying system is on working, set the humidity
value to 40%RH. Waitting until the humidity display value reach the setted value, then increase
the humidity display value to make it 15%RH higher than the setted value, the incubator alarming,
the “Alarm” light will flash with continuous audible sound, and the Message indicator will show
“High Humidity”. Set the humidity value to 50%RH. Waitting until the humidity display value
reach the setted value, then decrease the humidity display value to make it 15%RH lower than
the setted value, the incubator alarming, the “Alarm” light will flash with continuous audible sound,
and the Message indicator will show “Low Humidity”. Press Silence /Reset key to stop alarming,
but the alarm indicator light continously shines until the deviation is less than ±15%RH. If 4m later,
the alarming condition still exists, it will alarm again.
To Next Page
