Figure 6 Sensor location near a junction
1
Acceptable upstream sensor location
3
Distance downstream: 10 × pipe diameter
2
Acceptable downstream sensor location
4
Distance upstream: 5 × pipe diameter
5.1.2 Install the sensor
W A R N I N G
Explosion hazard. In hazardous locations, friction between surfaces can generate sparks that can
cause an explosion. Make sure that no friction is possible between the instrument and any surrounding
surfaces.
C A U T I O N
Potential hearing loss risk. Hearing protection required. The level transducer emits ultrasonic sound
energy when powered. Ear protection must be worn when working within 1 meter of this device. Do not
point the transducer output towards ears during installation, calibration and maintenance.
Ultrasonic pressure:
• Dimensions of useful beam: Long range
• Ultrasonic pressure: > 110 dB at 1 m (3.3 ft) on axis
• Sound pressure inside beam: 111.9 dB maximum
Mount the Flo-Dar sensor above the open channel on the wall of the manhole. For hazardous
locations, a barrier must be installed outside of the hazardous area.
For temporary installation, an optional Jack-bar is available. Instructions are supplied with the Jack-
bar.
The sensor dimensions are shown in
.
The dimensions of the standard frame for wall installation are shown in
.
12
English
Содержание Flo-Dar
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