Hach 910, Instrument Manual

Page: 13 / 54

Specifications
Page 11
Specs.fm
Specifications
Model 930
Dimensions 21.9 x 60 cm (8.625" dia. x 23.625" L)
Weight 16.2 kg (35.7 lbs.) with batteries
Enclosure Material PVC
Enclosure Rating NEMA 6P (IP67)
Operating Temperature Range -18 to 60 °C (0 to 140 °F)
Storage Temperature Range -40 to 60 °C (-40 to 140 °F)
Power Source Six Energizer EN-529, Alkaline, 6 V dc batteries
Battery Life
365 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)
User Interface PC
Monitoring Intervals 1, 2, 3, 5, 6, 10, 12, 15, 20, 30, 60 minutes
Program Memory Non-volatile, programmable flash, can be updated via RS232 port
Time-Based Accuracy ±1 second per day
Units of Measurement
Level: in., m, cm, ft.
Flow: gps, gpm, gph, lps, lpm, lph, mgd, afd, cfs, cfm, cfh, cfd, m
3
s, m
3
m, m
3
h, m
3
d
Totalized Flow: gal., ft.³, acre-ft., L, m³
Data Storage
Capacity: 175 days of three level readings, three velocity readings, and rainfall
measurments at a 15-minute recording intervals
Data Types: Level, velocity, and rainfall
Storage Mode: Wrap or slate
RAM Memory: 512K
Output Conditions Set point on level, velocity, rainfall, flow, or flow rate of change
Sampler Output 6 to 12 V dc pulse, 100 mA max. at 500 ms duration
Communications Serial connection to PC computer with Hach analysis software
Modem
14400, V.32 bis,V.42, MNP2-4 error correction. V.42 bis, MNP5 data compression.
MNP10EC Cellular Protocol
Local Terminal RS232 at 19.2k baud
Velocity Measurement Accuracy
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)