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The pSonic Series is an ultrasonic,
4-20mA, LoopPower level transmitter measuring level in open
or enclosed silos and tanks. The measured values are reported
in an analogue 4-20mA current signal.
FEATURES
pSonic is a compact, intrinsically safe (##X iaT6) ultrasonic,
4-20mA loop powered meter.
The electronic assembly is totally encapsulated (IP68) in
ABS housing and a virtually chemically inert TefZel™
and PCV transducer casings (nose). Two LED's are used to indicate
the functional status of the meter. Real time temperature
compensation is applied onto the measured signals to ensure
accurate reading throughout the temperature range.
The device is set up easily by touching a magnet (provided)
to the designated span and zero areas on the housing.
Its unique signal processing algorithm allows the device
to operate in small diameter pipes and tanks. The device also
has the unique feature to be able to track fast moving targets,
4m/min the target moving towards the meter and 8m/min the
target is moving away from the meter.
Open channel flow or volume can also be measured by using
a pSonic in conjunction with either a BEP Controller or mSonic
meter/controller. .
MODELS
The pSonic is available in five models
MODEL |
Dead Band (mm) |
Range (m) |
Frequency (kHz) Approx |
3dB Beam Angle |
pSonic 040 |
250 |
4 |
75 |
6° |
pSonic 060 |
250 |
6 |
60 |
7° |
pSonic 080 |
300 |
8 |
50 |
7° |
pSonic 100 |
400 |
10 |
45 |
8° |
pSonic 150 |
500 |
15 |
35 |
9° |
INSTALLATION
There are four methods of mounting the device:
- Suspended from the cable.
- Suspended from a ½"in. NPT conduit.
- Screwed into a pipe coupling threaded 2 inch NPS.
- Screwed into a flange with 2 inch NPS thread and then
bolted to a mating flange on the vessel. The use of a rubber
o-ring is recommended.
SETTING-UP ALL MODELS
- Touching a magnet to the circled SPAN and ZERO areas on
the housing sets the device operating distances. The device
has internal non-volatile storage and even when power is
removed, will always remember the last set reference levels.
- The device is set-up for the minimum level ZERO, and the
maximum level SPAN, by means of momentarily contacting the
respective areas marked SPAN and ZERO on the surface of
the assembly with the magnetic key supplied.
SPECIFICATIONS
| Range |
250mm to 15m (model dependant) |
| Current Output |
4-20mA span directly or inversely proportional |
| Accuracy |
Better or equal to ± 0.25% of maximum span at
constant temperature |
| Resolution |
3mm / 0.12in |
| Point Setting |
By magnetic key, non-volatile storage |
| Status indication |
Two visible LED's |
| Fault Current |
22mA or 4mA or 3.8mA (selectable) |
| Loop Load |
Rmax=Vsupply-17kOhm / 22 |
| Beam Angle |
6° tp 9° at -3 dB boundary (model dependant) |
| Frequency |
35kHz to 80kHz (model dependant) |
| Storage temp |
-40°C / -40 °F to 80°C /176°F |
| Operating temp |
-20°C / -4°F to 60°C / 140°F, please
note that instrument has internal temperature compensation |
| Container pressure |
200 kPa (14 psi) above atmosphere |
| Enclosure rating |
1kg / 2.2lb including integral 23ft cable |
| Dimensions (Model Dependant) |
Width - 105mm / 4.1in
Length - 105mm / 4.1in
Overall height - 112mm / 4.3in |
| Housing Details |
UV Resistant ABS housing and Tefzel™ Nose or PVC
Nose |
| Mounting |
Suspended from cable or ½ in. NPT conduit, mounted |
| Supply voltage |
17V to 30V DC (max.)
24 V DC Typical Operating Voltage |
| Protection |
Protected against reverse polarity and voltage surges
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| Certifications |
EEX ia IIC T6 (Tamb = -20°C to 60°C)
IA No.:SABS S/S828 X
U¡=28V I¡=93 P¡=0.65W L¡=4uH C¡=100nF
IEC61326-1 / IEC801-3 / EN55011 |
PRINCIPLE OF OPERATION
Short controlled ultrasonic pulses emanating from the device
transducer are aimed at a target surface. After filtering
out any noise present, the time taken for the reflected pulses
to strike the sensor surface are converted to linear measurements
and cconveyed to the remote indicator / recorder as a current
value.
GENERAL
Our aim is to provide our customers with practical,
cost-saving engineered solutions and through our
worldwide and local/manufacture supplier contacts
and service facilities, we are able to offer complete
instrumentation packages. These comprehensive
packages include controllers, data loggers, control
panels and turnkey projects.
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