YOKOGAWA CA700, Getting Started Manual

Page: 25 / 64

2-4
IM CA700-02EN
Operating Altitude and Ambient Temperature and Humidity
Use the instrument in the following environment.
Ambient temperature 10°C to 50°C
Ambient humidity 20% RH to 80% RH; no condensation
Operating altitude 2000 m or less
Note
• To ensure high measurement accuracy, operate the instrument within the following ranges: 23 ± 3°C.
• When using the instrument in a place where the ambient humidity is 30% or less, take measures to
prevent static electricity such as using an anti-static mat.
• Condensation may occur if the instrument is moved to another place where the ambient temperature or
humidity is higher, or if the temperature changes rapidly. In such cases, before you use the instrument,
allow it to adjust to the surrounding temperature for at least an hour.
Do Not Install the Instrument in the Following Places
• In direct sunlight or near heat sources
• In an environment with excessive amounts of soot, steam, dust, or corrosive gas
• Near strong magnetic field sources
• Near noise sources, such as high-voltage equipment or power lines
• In an environment that is subject to large levels of mechanical vibration
• On an unstable surface
• In an environment where ignition or explosion may occur, such as in explosive gas
Protection Level Using Protection Caps
This instrument complies* with protection level IP54.
* When the USB port cover is closed and the external pressure sensor input cap is attached.
IP54
International Protection
Splashing of water (liquid ingress protection)
Dust protected (solid particle protection)
If the USB port cover is open or the external pressure sensor input cap is not attached, the instrument
does not comply with IP54.
Installation Orientation
To measure pressure, install the instrument horizontally with the front panel facing up or using the rear
panel stand.
After installation, perform zero calibration according to section 2.6.
Measurement Category
The measurement category of this instrument is Other (O).
Measurement
Category
Description Notes
O (None, Other) Other circuits that are not directly connected to the
mains.
Circuits that are not powered from
the mains
CAT II For measurements performed on circuits that are
connected to low-voltage installations
Household appliances, portable
tools, etc.
CAT III For measuring facility circuits Distribution boards, circuit
breakers, etc.
CAT IV For measurements performed on power source circuits Entrance cables, cable systems,
etc.
2.2 Installing the Instrument