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The HGTD™ was designed as an alternative to the Standard GTD-Pro™.
The HGTD™ is smaller and lighter in weight than the Standard GTD-Pro™.
It is particularly suited for deployment on profilers and gliders or
in applications where a faster response, smaller and lighter weight
instrument for measuring gas tension is needed. The HGTD™ is fitted
with PSI's patented, fast response, pumped, tubular interface. Note
that for optimum performance, a source of water flow is required at 3 to 10 liters per minute
(optional Sea-Bird 5-T pump available from Pro-Oceanus Systems Inc.
or Sea-Bird Electronics, Inc.).
The specifications and features of the HGTD™ are provided on this
page. For more information,
please contact PSI.
PSI HGTD™ Features:
High precision and accuracy
User friendly set-up and operation
RS-232/485 communications
Compatible with Sea-Bird Electronics CTD's (please contact PSI for
models)
Low power requirements
Light weight and compact size
Hard anodized aluminum housing
Shipped in high-impact carrying case
Comes equipped with the PSI patented tubular pumped fast interface
| Specification Comparison | ||
| Feature | GTD PRO | HGTD |
| Length | 12.5 in. (31.8 cm) |
9 in. (22.9 cm) |
| Diameter | 4.5 in. (11.4 cm) |
3.25 in. (8.3 cm) |
| Weight (Air) | 15.5 lbs. (7 kg) |
3.6 lbs. (1.6kg)* |
| Weight (Water) | 7.436 lbs. (3.38 kg) |
.32 lbs (0.6 kg)* |
| * Sensor housing only | ||
Download the HGTD™ Product Brochure
HERE
Physical Specifications
Length: 9 in. (22.9 cm)
Diameter: 3.25 in. (8.3cm)
Weight (air): 3.6 lbs.(1.6 kg)
Weight (water): 1.32 lbs. (0.6 kg)
Performance
Accuracy: <0.02 mb per year drift from calibration
Precision: 0.002 mb
Gas tension limits:
Min: 800 mb
Max: 2000 mb (Other gas tension limits available by special order)
Electrical Characteristics
Input voltage: 9-16 Volts DC
Power Consumption:
While measuring: 0.8 Watts (67 ma at 12 volts)
While sampling at 30 minute intervals: 27 mW overall