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Specifications
Model 920
Dimensions
Weight
Enclosure Material
Enclosure Rating
Operating Temperature Range
Storage Temperature Range
Power Source
Battery Life
User Interface
Monitoring Intervals
Program Memory
Time-Based Accuracy
Units of Measurement
Data Storage
Communications
Modem
Local Terminal
Velocity Measurement Accuracy
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Specifications
16.8 cm dia. x 44.7 cm L (6.625" dia. x 17.625" L)
7.5 kg (16.5 lbs.) with batteries
PVC
NEMA 6P (IP67)
-18 to 60 °C (0 to 140 °F)
-40 to 60 °C (-40 to 140 °F)
Two Energizer EN-529, Alkaline, 6 V dc batteries
90 days typical, with a 15-minute recording interval, one level and one velocity, one
data download per week, at 10 °C (50 °F) (also affected by site conditions)
PC
1, 2, 3, 5, 6, 10, 12, 15, 20, 30, 60 minutes
Non-volatile, programmable flash, can be updated via RS232 port
±1 second per day
Level: in., m, cm, ft.
Flow: gps, gpm, gph, lps, lpm, lph, mgd, afd, cfs, cfm, cfh, cfd, m
Totalized Flow: gal., ft.³, acre-ft., L, m³
Capacity: 240 days of two level readings and two velocity readings at a 15-minute
recording intervals
Data Types: Level, velocity, and rainfall
Storage Mode: Wrap or slate
RAM Memory: 128K
Serial connection to IBM compatible computer with Hach analysis software
14400, V.32 bis,V.42, MNP2-4 error correction. V.42 bis, MNP5 data compression.
MNP10EC Cellular Protocol
RS232 at 19.2k baud
Method: Doppler ultrasonic
Transducer Type: Twin 1 MHz piezoelectric crystals
Typical minimum depth for velocity: 2 cm (0.8 in.)
Range: -1.52 to 6.10 m/s (-5 to 20 fps)
Zero Stability: 0.015 m/ss (<0.05 fp)
Accuracy: ±2% of reading
Operating Temperature: -18 to 60 °C (0 to 140 °F)
3
3
3
3
s, m
m, m
h, m
d
Specs.fm
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