Instruction Sheet
1 800 4INSITU
(toll-free, US and Canada) or 970 498 1500
www.in-situ.com
The PTX-1830 is a fully submersible pressure transducer
for measuring pressure or water level. It can be used
with In-Situ’s HERMIT
™
data loggers to collect fast,
accurate time-drawdown data from pump and slug
tests. The 0.69” diameter titanium/stainless steel body
is molded to a polyurethane jacketed cable for a high
integrity waterproof assembly.
Operating Principle
A pressure transducer senses changes in pressure, mea-
sured in pounds per square inch (PSI), exerted by a
column of water or other fluid above an internal strain
gauge. This is translated electronically to a 4-20 mA
signal sent to a data logger. Software calibration
coefficients unique to each transducer enable the logger
to convert the 4-20 mA output to meaningful results in
the desired units.
Calibration Documentation
Documents provided with the transducer describe In-
Situ’s calibration process and list the transducer’s
calibration coefficients (Linearity, Scale, and Offset).
Installation
Installation of the PTX-1830 has three steps, which may
be performed in any convenient order:
• Connect the transducer cable to the data logger
• Program the data logger to identify the type and
characteristics of the transducer
• Install the PTX-1830 in the monitoring site
Connect to the Data Logger
To connect to In-Situ’s HERMIT data loggers:
1
Remove the protective caps from the logger and
cable connectors.
22222 Orient the connector patterns
so that the large tab in the
cable connector aligns with
the V-shaped notch in the data
logger connector.
33333 Gently press the connector halves together. Excessive
force should not be required.
44444 Tighten the connector’s lock ring to establish a tight
connection and water-resistant seal.
PTX-1830 Pressure Transducer
Proper operation of a transducer depends upon a
clean, dry connection. Be sure the connectors are
clean and dry before installing them.
There are no user-serviceable parts in the PTX-1830.
Do not attempt to service the unit yourself; doing so
can cause permanent damage to the transducer
and will void your warranty.
Large tab