PASCO PS-2151 Thermocline Sensor - Manual (Page 2)

Thermocline Sensor Model No. PS-2151
2 ®
rate temperature measurement at a particular
depth, hold the sensor still and wait until the read-
ing has stabilized.
You can also leave the sensor head in the water
and record changes in depth and temperature over
time.
Calibration
Calibration is usually not necessary. The Ther-
mocline Sensor is factory tested and calibrated.
The depth-sensing element is calibrated for use in
fresh water or saltwater, and you can select either
of these calibrations in the software.
The reference pressure for the depth sensor is
sealed into the PVC fitting. The barometric pres-
sure at the time and location that the sensor was
built is the reference pressure. If the local baro-
metric pressure is different from the reference
pressure, then a small offset error will occur; the
depth reported by the sensor at the surface of the
water will not be zero. In most cases this error is
only a few centimeters and can be ignored. To
remove the error, define a calculation in DataStu-
dio to subtract the offset (see the DataStudio Help
menu for instructions on using the calculator.)
Specifications
*Absolute accuracy after barometric pressure
compensation.
**Maximum instantaneous transition:
0 to 34.5 feet (0 to 10.54 m).
Technical Support
For assistance with any PASCO product, contact
PASCO at:
Copyright and Warranty
Information
Copyright Notice
The PASCO scientific 012-08734A Thermocline
Sensor Instruction Sheet is copyrighted and all
rights reserved. However, permission is granted
to non-profit educational institutions for repro-
duction of any part of this manual, providing the
reproductions are used only for their laboratories
and are not sold for profit. Reproduction under
any other circumstances, without the written con-
sent of PASCO scientific, is prohibited.
Limited Warranty
For a description of the product warranty, see the
PASCO catalog.
Depth (Pressure) Sensor
Range 0 to 34.6 feet
(0 to 10.54 m)
Absolute Accuracy* 0.5 feet (0.15 m)
Repeatability ± 0.05% of full scale
Resolution 0.1 feet (0.03 m)
Response Time
(10% to 90%)** 0.5 ms
Temperature
Compensation 0 °C to 70 °C
Temperature Sensor
Range 0 °C to 70 °C
Absolute Accuracy ±1.5 °C typical
± 0.6 °C at 25 °C
Resolution 0.05 °C
Response Time
(10% to 90%) 10 s
Address: PASCO scientific
10101 Foothills Blvd.
Roseville, CA 95747-7100
Phone: (916) 786-3800
(800) 772-8700
Fax: (916) 786-3292
Web: www.pasco.com
Email: [email protected]