Heater Module
The radiant energy is directed by the parabolic reflectors on the infant. The radiant energy can be controlled either manually or by mean of skin temp sensor which controls the radiant energy to maintain a selected skin temperature
Controller
When operated in manual control mode, the controller permits the operator to adjust the heat output of the heater module from zero to maximum settings. During the manual mode, a patient probe can be used to monitor the skin temperature. When operated in skin temperature control mode, the controller utlizes a skin temperature probe connected in between the controller input and the infant to automatically adjust the heat output of the heater module to maintain a selected preset skin temperature. Up and down switches permit adjustment of skin temp set point and a digital display provides temperature read out.
Examination light
Dazzle-free observation light for examination of the infant.Dual side swivel heater provided access for x-ray and other procedure.
Apgar timer
Apgar mode is used to take the infant Apgar score within specified time. Apgar mode is to start and stop, just press Apgar switch.
Alarm
Each time the unit is turned on, an automatic test sequence is initiated to verify that the visual display and the audible alarms are functional. Alarms are provided for high and low skin temperature.
Set point (high)
If the temp sensed by the skin probe is 0.5 degree above the set temperature, a high set point alarm will occur after a delay of 10 second. The audible portion of the alarm can be silenced by depressing the alarm mute switch. However the visual indicator will continue. If the condition is not corrected within 20 sec the audible alarm will resume. When the alarm condition is corrected, the circuit will reset.
Set point (low)
If the set temperature sensed by the skin probe is 0.5 degree less than the set point, a low set point alarm will occur after a delay of 10 seconds.
Probe fail
During skin control mode, if the skin temp probe is open short or un-plugged, the probe failure alarm will indicate the baby temperature display and the heater will be turned off. This alarm cannot be rest until the alarm condition is corrected.
Modes of Operation
There are two modes of operation for the VNG RW 800, they are as follows:
- Servo mode
- Manual mode
- Air mode
Servo mode
In this mode infant temperature is sensed with the help of a skin temperature probe. The heater power is automatically controlled so that infant temperature lies in the desired range. This is set by the user.
Manual mode
In this mode, we can manually set the power of the heater ranging from 10 percent to 100 percent.
Air mode
In this mode we used the special thermistor probe which has the ability to measure the air temperature near the infant. In mode control, unit continuously measures the air temperature with the help of air probe and sets the heater power. This helps to achieve the set temperature as required by the user.
Electrical Specification – Set temp range
Heater power – 650 Watt Skin: 32 degrees to 38 degrees
Examination light – 9 watt Resolution: 0.1 degree
Power cable length – 3 meter Accuracy: 0.2 degree
Fuse used – 4 Amperes
Power source – 220 volt Ac /50 Hz
Mechanical specification
Paint & Coating – MS Fabrication with powder coating
Castor – Each unit has four castor, two lockable.
