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Sigma Series Overview

Sigma Open Channel Flow Meter Model Guide
Model: 
911 920 930 940 950 950 AV 950 Opti-Flow 950 Opti-Flow AV
FEATURE:
Portable/Field ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤
Permanent   ¤ ¤   ¤ ¤ ¤ ¤
Interface via computer ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤
User Interface: keypad + LCD         ¤ ¤ ¤ ¤
Data Transfer Unit   ¤ ¤   ¤ ¤ ¤ ¤
Battery Life (in days) 15 minute intervals** 65 90 365 365 150 150 150 150
AC Power Capability   ¤   ¤ ¤ ¤ ¤ ¤
Level/Flow Measurement:
1 level only channel         ¤   ¤  
1 level and/or velocity channel ¤         ¤   ¤
2 level and/or velocity channels   ¤   ¤        
3 level and/or velocity channels     ¤          
Bubbler         ¤ ¤ ¤ ¤
Submerged Pressure ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤
UltraSonic   ¤ ¤ ¤ ¤ ¤ ¤ ¤
Area Velocity ¤ ¤ ¤ ¤   ¤   ¤
Intrinsic Safety ¤     ¤        
NEMA 6P ¤ ¤ ¤ ¤        
NEMA 4X,6         ¤ ¤ ¤ ¤
NEMA 4X (IP66)                
Optional Features
pH/Temp Only         ¤ ¤ ¤ ¤
pH/Temp/ORP         ¤ ¤ ¤ ¤
DO/Conductivity         ¤ ¤ ¤ ¤
Rain Gauge   ¤ ¤   ¤ ¤ ¤ ¤
4-20 mA Outputs         ¤ ¤ ¤ ¤
Alarm Relays         ¤ ¤ ¤ ¤
Analog Inputs         ¤ ¤ ¤ ¤
RS-232 ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤
Modem (USA, CA)   ¤ ¤ ¤ ¤ ¤ ¤ ¤
Sampler Pacing ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤
Mechanical Totalizer         ¤ ¤ ¤ ¤
** May be affected by site conditions.

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