1
SR50AT-Series Sonic Ranging Sensor
1. Introduction
The SR50AT, SR50AT-316SS, and SR50ATH are sonic ranging sensors
that
provide a non-contact method for determining snow or water depth. They
determine depth by emitting an ultrasonic pulse and then measuring the elapsed
time between the emission and return of the pulse. An air temperature
measurement sensor is included to correct for variations of the speed of sound
in air. The air temperature sensor must be housed in a multiplate radiation
shield.
Differences between the SR50AT, SR50AT-316SS, and SR50ATH:
•
SR50AT: standard anodized aluminum body
•
SR50AT-316SS: marine grade 316L stainless steel body with a
parylene-coated transducer head
•
SR50ATH: standard anodized aluminum body with a heated
transducer head to prevent riming
This manual provides information only for CRBasic dataloggers.
It is also compatible with our retired Edlog dataloggers. For Edlog
datalogger support, contact Campbell Scientific.
2. Precautions
•
section at the front of this
manual.
•
Never open the sensor while it is connected to power or any other device.
•
Always disconnect the sensor using the connector or disconnect the cable
wires from their termination points.
•
Never operate the sensor with the shield wire disconnected. The shield
wire plays an important role in noise emissions and susceptibility as well
as transient protection.
•
Follow local regulations (see Compliance in Section
(p. 5)
).
3. Initial Inspection
•
Upon receipt of the sensor, inspect the packaging for any signs of shipping
damage and, if found, report the damage to the carrier in accordance with
policy. The contents of the package should also be inspected and a claim
filed if any shipping related damage is discovered.
NOTE