Hach 911, User Manual

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4
Specifications
Depth Compensated
Temperature
0 to 70 °C (32 to 158 °F)
Material
Noryl
®
plastic outer shell with epoxy potting within
Power Consumption

1.2 W @ 12 VDC
Cable Material Urethane sensor cable with air vent
Cable Lengths Available
Standard: 9, 15, 23, and 30.5 m (30, 50, 75, and 100 ft)
Custom: 30.75-76 m (101-250 ft) maximum
Cable Diameter 0.91 cm (0.36 in.)
Dimensions 2.3 cm H x 3.8 cm W x 13.5 cm L (0.9 in. H x 1.5 in. W x 5.31 in. L)
1
For temperatures above 40 °C (104 °F) add ± 0.3 cm/°C (0.03 in./°F)
Table 2 940 Flow Meter Specifications
General
Certification cCSAus Approved for Class 1 and Division 1
Dimensions 21.9 cm dia. x 60 cm L (8.625 in. x 18.25 in.)
Weight 8.16 kg (18 lb)
Enclosure Material PVC
Enclosure Rating NEMA 6P, IP 67
Operating Temperature –18 to 60 °C (0 to 140 °F)
Storage Temperature –40 to 60 °C (–40 to 140 °F)
Power Source One (14 V) 16 amp hour lithium rechargeable battery pack
Battery Life
330 days typical with a 15 minute recording interval, 1 level and 1 velocity, data download once
per week, 10 °C (50 °F) (also affected by site conditions)
User Interface Optically Isolated Interface to IBM compatible PC
Monitoring Intervals 1, 2, 3, 5, 6, 10, 12, 15, 20, 30, and 60 minutes
Program Memory Non-volatile, programmable flash, can be updated via RS232 port
Time Based Accuracy ±1 second per day
Unit Measurements
Level: in., m, cm, ft
Flow: gps, gpm, 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, m
3
Data Storage
Capacity: 306 days of 2 level readings and 2 velocity readings at a 15 minute recording interval.
Data Types: Level and Velocity
Storage Mode: Wrap or Slate
Output Conditions Set point on level, velocity, flow, or flow rate of change.
Sampler Output 6–12 V dc pulse, 100 mA max at 500 ms duration with approved interface.
Communications
Connection
Serial connection via optically isolated interface to IBM compatible computer with
analysis software.
Local Terminal RS232 at 19.2 k baud
Table 1 911 Flow Meter Specifications (continued)