AB-5961
8
Air flow
Insulating
material
Installation
CAUTION
Install the product in a location that satisfies the operating conditions (temperature, humidity, power, vibration, shock,
mounting direction, atmospheric condition, etc.) as listed in the specifications and use the product within the operating
ranges as listed in the specifications.
Failure to do so might cause fire or device failure.
Installation and wiring must be performed by qualified personnel in accordance with all applicable safety standards.
Do not put load or weight on the product.
Doing so might damage the product.
Installation requirements
●
Select a location where the typical temperature and humidity of the process fluid can be measured at the specified air
velocity.
●
Make sure that the entire probe is immersed in the process fluid. Also, make sure that airflow passes perpendicular to the
side of the probe.
●
Leave adequate maintenance clearance in front of the housing cover.
●
When installing in steam-heating AHU, make sure the probe is not directly exposed to the high-temperature steam.
The high-temperature steam might exceed the probe limit operating condition.
AHU: Air handling unit
●
Do not allow condensation especially when installing the probe pointing upward.
Condensation water that remains in the filter cap slits might cause measuring error till the filter cap becomes dried.
IMPORTANT:
When the duct sensor is faulty, reduced output may cause over-humidification. Provide safety measure on the
controller in connection.
Installing Models HTY7803, TY7803, and HY7803 series
(onto duct for general air conditioning)
1) Prepare the dedicated mounting bracket.
Attach the indicator label for mounting hole at the probe
mounting position on a duct, and open a mounting hole.
Figure 4. Indicator label on the duct
2) Mount the mounting bracket onto the duct so that the
longer cylindrical part overhangs from the duct. Fix the
mounting bracket with accessory M4 screws.
Figure 5. Mounting bracket on the duct
3) Wrap the duct with an insulating material.
(If the duct has been already wrapped with an insulation
material, partially remove the material for mounting the
bracket. Fill the clearance between the bracket and the
duct with the insulating material after mounting the
bracket.)
Figure 6. Duct and the mounting bracket
wrapped with insulating material
Airflow
Duct
Indicator label
Air flow
Duct
Packing
Mounting
bracket
