The KR-939SB integrated three parameter combination probe is a
combined sensing and transmission unit used for monitoring the safe
operation of large and medium-sized rotating equipment such as
cooling tower fans.
This probe is used in conjunction with the KR-939B fan safety
monitor, which can perform online safety monitoring of mechanical
vibration, gearbox lubricating oil temperature, and lubricating oil
level during fan operation.
It integrates three sets of sensors, amplifiers, and compensation
transmission circuits internally. It uses digital encoding
technology to achieve a four wire bus connection method, which
allows eight probes to be connected in parallel on a four core
cable, while measuring up to 24 safe operating parameters of eight
devices.
This product is particularly suitable for safety monitoring of wind
turbine groups.
Temperature measurement characteristics: Lubricating oil
temperature measurement range: 0-100 ℃, comprehensive temperature
measurement error: ± 3 ℃
Oil level measurement characteristics: Lubricating oil level
measurement range: -10~40mm, comprehensive error of oil level
measurement: ± 5mm (0mm is the lower limit position of the normal
oil level of the gearbox, and the measured medium must be
non-conductive)
Vibration measurement characteristics: Vibration measurement range:
0-20mm/s, measurement output is proportional to the true effective
value (RMS) of vibration velocity, vibration measurement frequency
band range: 10-1000HZ, comprehensive vibration measurement error: ±
1mm/s
Signal output characteristics: instruction encoding signal (D end):
logic pulse mode, TTL level, measured signal feedback (A end):
temperature
and liquid level signal DC/4-20mA, vibration waveform signal
DC/12mA ± 8mA (p-p), signal transmission distance: (probe to
monitor) better than 500 meters
Power supply characteristics: Probe power supply voltage (- V~+V
terminal): DC/16-18V (provided internally by the monitor), average
power supply current per probe: 50mA, instantaneous maximum power
supply current: 150mA
Environmental characteristics: Environmental temperature range:
-20~80 ℃, environmental humidity range: 0~100% (interface sealed
with 704 silicone rubber)
