Download Sigma 950 - Hach Flow

Table of contents
Specifications on page 3
User interface on page 18
General information on page 4
Operation on page 20
Installation on page 8
Maintenance on page 24
Additional information
Additional information is available on the manufacturer's website.
Specifications
Specifications are subject to change without notice.
Specification
Details
Dimensions (H x W x D)
34.3 x 25.4 x 24.1 cm (13.5 x 10.0 x 9.5 in.)
Weight
5 kg (11 lb) without power source
Enclosure
NEMA 4X, 6 (front cover open or closed); ABS, UV light resistant
Pollution degree
2
Installation category
I
Protection class
III
Operating temperature
–10 to 65.5 °C (14 to 150 °F), 95% relative humidity, non-condensing
Storage temperature
–40 to 80 °C (–40 to 176 °F)
Power requirements and
options
12 VDC supplied from 7 A-Hr rechargeable gel lead-acid battery, 4 A-Hr rechargeable
Ni-Cad battery or non-rechargeable alkaline lantern batteries (2 x 6 VDC)
15 VDC supplied from 100–120 VAC input power supply or 230 VAC input power
supply
Fuses
F1 on CPU board: 2 A, 250 VAC, fast-blow, 5 x 20 mm
F1 and F2 on base board: 4 A, 125 VAC, slow-blow, 5 x 20 mm
F3 on base board: 1 A, 250 VAC, fast-blow, 5 x 20 mm
Display
Liquid crystal display (LCD) with backlight; auto-off when not in use for battery
operation; 8 line x 40 character in text mode, 60 x 240 pixels in graphics mode
Totalizers
8-digit resettable and 8-digit non-resettable software
Time base accuracy
±0.007% per day
Measurement modes
Flumes: Parshall, Palmer Bowlus, Leopold-Lagco, H, HL, HS, trapezoidal
Weirs: V-notch (22.5 to 120 degrees), compound V-notch, contracted/non-contracted
rectangular, ThelMar, Cipolletti
Manning Equation: round, U, rectangular and trapezoidal channels
Flow Nozzle: california pipe
Head versus Flow: custom programmable curve of up to 99 points
Level only: inches, feet, centimeters, meters
Area velocity: level-area table, circular pipe, U-shaped channel, trapezoidal channel,
rectangular channel
Power equation: Q = K1Hn1 + K2Hn2
English 3