Forafull product specification, see: Documentation
U20L-01
Operating area:
0 to 207 kPa (0 to 30 psia); approximately 0 to 9 m water depth at sea level, or 0 to 12 m water depth at 3,000 m altitude
Factory Calibrated Range:
69 to 207 kPa, 0° to 40°C
10 to 30 psia, 32° to 104°F
Burst pressure:
310 kPa or 18 m depth
45 psia or 60 feet depth
Accuracy for Water Level
Typical error: ±0.1% FS, 1.0 cm water
Maximum error: ±0.2% FS, 2.0 cm water
Accuracy for Raw Print
±0.3% FS, 0.62 kPa (0.09 psi) maximum error
Resolution
<0.02 kPa water
0.007 feet of water
Response time for Press (90%)
<1 second at stable temperature; the accuracy of the measurement also depends on the temperature's response time
U20L-02
Operating area
0 to 400 kPa (0 to 58 psia); approximately 0 to 30.6 m water depth at sea level, or 0 to 33.6 m water depth at 3,000 m altitude
Factory Calibrated Range
69 to 400 kPa (10 to 58 psia), 0° to 40°C (32° to 104°F)
Burst pressure:
500 kPa (72.5 psia) or 40.8 m depth
Accuracy for Water Level
Typical error: ±0.1% FS, 3.0 cm water
Maximum error: ±0.2% FS, 6.0 cm water
Accuracy for Raw Print
±0.3% FS, 1.20 kPa (0.17 psi) maximum error
Resolution
<0.04 kPa (0.006 psi), 0.41 cm (0.013 ft) of water
Response time for Press (90%)
<1 second at stable temperature; the accuracy of the measurement also depends on the temperature's response time
U20L-04
Operating area
0 to 145 kPa (0 to 21 psia); approximately 0 to 4 m water depth at sea level, or 0 to 7 m water depth at 3,000 m altitude
Factory Calibrated Range
69 to 145 kPa (10 to 21 psia), 0° to 40°C (32° to 104°F)
Burst pressure:
310 kPa (45 psia) or 18 m depth
Accuracy for Water Level
Typical error: ±0.1% FS, 0.4 cm water
Maximum error: ±0.2% FS, 0.8 cm water
Accuracy for Raw Print
±0.3% FS, 0.43 kPa (0.063 psi) maximum error
Resolution
<0.014 kPa (0.002 psi), 0.14 cm (0.005 ft) of water
Response time for Press (90%)
<1 second at stable temperature; the accuracy of the measurement also depends on the temperature's response time
TEMPERATURE (ALL MODELS)
Operating area
-20° to 50°C
-4° to 122°F
Accuracy
±0.44°C from 0° to 50°C
±0.79°F from 32° to 122°F
Resolution
0.10°C at 25°C
0.18°F at 77°F
Response time (90%)
10 minutes in water (typical)
Stability (Operation)
0.1°C per year
0.18°F per year
LOGGER
Real time clock
±1 minute per month 0° to 50°C (32° to 122°F)
Battery
2/3 AA, 3.6 Volt lithium, factory-replaceable
Battery life (typical use)
5 years at 1 minute or longer logging intervals
Memory (Non-Volatile)
64K bytes of memory (approx. 21,700 pressure and temperature measurements)
Weight
About 154 gi air
About 53.9 gi fresh water
Dimensions
3.18 cm diameter, 15.24 cm length; mounting hole 6.3 mm diameter
Material for immersion
Polypropylene sheath and lanyard; Viton and Buna-N O-rings; ceramic sensor in acetal end cap; stainless steel screws suitable for salt water
Logging interval
Fixed rate or multiple logging intervals, with up to 8 user-defined logging intervals and durations; logging interval from 1 second to 18 hours
Start modes: Immediate start and delayed start
Relief modes
Unloading while logging; stop and relieve
Battery indication
Battery voltage can be seen in the status window and can optionally be logged in the data file. Low battery indication in the data file.
Environmental classification: IP68
