Hach Sigma 910 Flow Meter

DATA SHEET
Flow
Hach Sigma 910 Portable Area Velocity Flow Meter
The design and weight makes it one of the best choices for temporary
flow monitoring projects. Use it to log level and velocity data for more
than 60 days without changing the battery. Its sealed design provides
superior system protection against surcharge conditions.
Features and Benefits
Simple and Reliable Flow Measurement
Easy Installation and Maintenance
The compact and lightweight Hach Sigma 910 Portable Area
Velocity Flow Meter measures average velocity directly,
without the need for time-consuming and costly flow
profiling. Hach’s exclusive Submersible Area Velocity Sensor
assures accuracy and reliability for unsurpassed versatility,
even in the harshest open-channel applications.
The 4.5-inch diameter of the Hach Sigma 910 flow meter
means it can be installed almost anywhere. It has a low
profile for reduced maintenance. The low maintenance
sensor is detachable and interchangeable for flexibility. An
oil-filled probe greatly reduces sensor fouling and need for
regular cleaning schedules. Single point calibration
(atmospheric) makes calibration quick and accurate.
WW
IW
Ideal for Harsh Environments
The 910 Flow Meter is NEMA 6P sealed to withstand
submergence and prolonged surcharge conditions. Its
compact size makes it easily portable and provides for easy
storage and fit in a variety of applications such as sewer and
storm water monitoring.
Applications
The Sigma 910 Portable Area Velocity Flow Meter is ideal
for short-term flow studies and sanitary sewer evaluation
studies.
Advanced Technology for Accuracy
The technology used in the Hach Sigma 910 flow meter
automatically corrects for temperature effects on level
measurement for a higher level of accuracy. The patented*
“Drawdown Correction” feature corrects the effects of
velocity on accurate level measurement. Advanced,
ultrasonic one-MHz Doppler technology avoids signal
dropouts and ensures high levels of accuracy in low-flow,
full-pipe, or reversed-flow conditions. The hydrodynamic
body and side-mounted cable also maintains accuracy by
reducing turbulence along the sensor body.
*Patent number U55691914
DW = drinking water WW = wastewater municipal PW = pure water / power
IW = industrial water E = environmental C = collections FB = food and beverage
C
2
Specifications*
910 Flow Meter
Submerged Depth/Velocity (AV) Sensor
Units of Measurement
Level: m, cm, ft., in.
VELOCITY MEASUREMENT
Range
-1.52 to 6.10 m/s (-5 to 20 ft./s)
Flow: gps, gpm, gph, lps, lpm, lph, mgd, afd, cfs, cfm, cfh,
cfd, m3s, m3m, m3h, m3d
Totalized Flow: L,
m3,
ft.3,
gal., acre-ft.,
Monitoring Intervals
1, 2, 3, 5, 6, 10, 12, 15, 20, 30, and 60 minutes
Operating Temperature
-18 to 60°C (0 to 140°F)
Storage Temperature
-40 to 60°C (-40 to 140°F)
Time-Based Accuracy
±1 second per day
User Interface
IBM-compatible PC
Program Memory
Non-volatile programmable flash, can be updated via
RS-232 port
Data Storage
Capacity: 90 days of 1 level and 1 velocity reading at
15-minute recording intervals
Data Types: Level and velocity
Storage Mode: Wrap or slate
RAM Memory: 128 K
Communications
Serial connection to IBM-compatible computer with Hach
Data Management software
Enclosure Material
PVC
Enclosure Rating
NEMA 6P (IP67)
Power Source
One Energizer EN-529 alkaline 6 Vdc battery
Battery Life
60 days typical (with 15-minute recording interval, 1 level
and 1 velocity, data download once per week, at 10°C (50°F),
also affected by site conditions)
Zero Stability
0.015 m/s (<0.05 ft./s)
Accuracy
±2% of reading
Operating Temperature
-18 to 60°C (0 to 140°F)
Typical Minimum Depth for Velocity
2 cm (0.8 in.)
Method
Doppler ultrasonic
Transducer Type
Twin 1 MHz piezoelectric crystals
DEPTH MEASUREMENT
Range
Standard: 0 to 3 m (0 to 10 ft.)
Extended: 0 to 9 m (0 to 30 ft.)
Accuracy
±0.16% full scale ±1.5% of reading at constant temp (±2.5°C)
±0.20% full scale ±1.75% of reading from 0 to 30°C (32 to
86°F)
±0.25% full scale ±2.1% of reading from 0 to 70 °C (32 to
160°F)
Maximum Allowable Level
Standard: 10.5 m (34.5 ft.)
Extended: 31.5 m (103.5 ft.)
Air Intake
Atmospheric pressure reference is desiccant protected
Method
Pressure transducer with stainless steel diaphragm
GENERAL
Material
Noryl® plastic outer shell with epoxy potting
Cable
Standard: 9, 15, 23, and 30.5 m (30, 50, 75 and 100 ft.)
Custom: greater than 30.5 m (100 ft.)
Maximum: 76 m (250 ft.)
Dimensions
11.4 cm diameter x 44.8 cm (4.5 in. diameter x 17.625 in.)
Weight
3.54 kg (7.8 lbs.) with battery
Cable Diameter
0.91 cm (0.36 in.)
Sensor Dimensions
2.3 x 3.8 x 13.5 cm (0.9 x 1.5 x 5.3 in.)
*Specifications subject to change without notice.
3
Engineering Specifications
910 Flow Meter
Submerged Depth/Velocity (AV) Sensor
1. The flow meter system shall consist of a flow meter and a
submerged depth/velocity sensor.
1. The sensor shall be capable of directly measuring average
velocity.
2. The sensor shall be equipped with level drawdown
correction to compensate for the effects of velocity in
depth measurement accuracy.
2. The method of velocity measurement shall employ
transducer type that is twin 1-MHz piezoelectric crystals.
3. The flow meter housing shall be made of NEMA 6P (IP67)
PVC sealed to withstand submergence and prolonged
surcharge conditions.
4. The flow meter shall be capable of reporting in the
following units:
a. Level; m, cm, ft., in.
b. Flow; gps, gpm, gph, lps, lpm, lph, mgd, afd, cfs, cfm,
cfh, cfd, m3s, m3m, m3h, m3d.
c. Totalized flow; L, m3, ft.3, gal., acre-ft.
5. The flow meter shall monitor at 1, 2, 3, 5, 6, 10, 12, 15, 20,
30, and 60-minute intervals.
6. The flow meter shall be capable of storing data in nonvolatile, programmable flash memory that can be updated
via RS232 port.
a. Capacity shall be 90 days of one depth and one velocity
reading at 15-minute recording intervals.
b. Data types shall be level and velocity.
c. Storage mode shall be wrap or slate.
3. The method of depth measurement shall be pressure
transducer with stainless steel diaphragm.
4. Velocity range shall be -1.52 to 6.10 m/s (-5 to 20 ft./s)
5. The range of level measurement shall be 0 to 3 m
(0 to 10 ft.), standard, and 0 to 9 m (0 to 30 ft.), extended.
6. The body material of the sensor shall be Noryl® plastic
outer shell with epoxy potting.
7. The connector of the sensor shall be hard anodized and
satisfy Military Spec 5015.
8. Power consumption of the sensor shall be less than or
equal to 1.2 W at 12 Vdc.
9. The sensor shall be the Sigma AV Sensor Flow Sensor
manufactured by Hach Company
7. The flow meter shall have Modbus® and GSM wireless
communication functionality.
8. Exterior dimensions shall not exceed 4.5 inches diameter
and 17.625 inches length.
9. The flow meter shall be the Sigma Model 910 Portable
Area Velocity Flow Meter manufactured by Hach Company.
Dimensions
The Hach Sigma 910 Portable Area Velocity Flow Meter should not be used in hazardous locations where combustible gases may
be present. Mount the meter so that the connectors face down. When not in use, cover the connectors with their protective caps
to prevent corrosion. Always use the appropriate manhole support bracket/spanner bar.
4
Ordering Information
Flow Meter
4900
Sigma 910 Flow Meter with
6-volt battery
Complete Flow Meter Systems
4900910
Includes Sigma 910 Flow
Meter (p/n 4900) standard
submerged depth/velocity
(AV) sensor (p/n 77065-030)
and suspension harness
(p/n 4920)
77064-100 Oil-Filled Standard Sigma
Submerged AV Sensor;
100 ft. cable
Sensor Mounting Hardware
At Hach, it’s about learning
from our customers and
providing the right answers.
It’s more than ensuring the
quality of water—it’s about
ensuring the quality of life.
When it comes to the things
that touch our lives...
4939
Submerged AV Mounting
Plate, for pipe wall installation
Keep it pure.
9574
Insertion Tool for Street Level,
for use with spring rings only
Make it simple.
Be right.
Spring Rings
Flow Meter Accessories
1361
Spring Ring for 6-in. dia. pipe
4920
Suspension Harness for
suspending the flow meter
1362
Spring Ring for 8-in. dia. pipe
1363
Spring Ring for 10-in. dia. pipe
9542
Manhole Support
Bracket/Spanner; 18 in.,
fits 18- to 28-in. manholes
1364
Spring Ring for 12-in. dia. pipe
9557
Manhole Support
Bracket/Spanner; 28 in.,
fits 28- to 48-in. manholes
3513
DTU-to-PC Cable; 115 Vac
3580
DTU-to-PC Cable; 230 Vac
Manhole Support Bracket;
18 to 27 in.
1727
Sampler or Flow Meter to PC
Cable
Sensors
3358
RS232 Extension Cable
All sensor are equipped with a connector
Accessories
Non-oil Filled Standard Submerged
Depth/Velocity (AV) Sensors
(0 to 10 ft. range)
5254
Insight Software (free of charge)
8764300
Flo-Center Software CD Only
77065-030 Non-oil Filled Standard
Sigma Submerged AV
Sensor; 30 ft. cable
8764500
Flo-Center Software CD with
RS232
8764600
Flo-Center Software CD with
RS232 and USB
7724700
Silicon Oil; dual 50-ml pack
(refills 100 sensors)
In Europe, the Middle East, and
Mediterranean Africa, contact:
7724800
Silicon Oil Refill Kit; includes
dispensing tool and oil packs.
HACH LANGE GmbH
Willstätterstraße 11
D-40549 Düsseldorf
GERMANY
Tel: +49 (0) 211 5288-0
Fax: +49 (0) 211 5288-143
E-mail: [email protected]
www.hach-lange.com
5713000
77065-050 Non-oil Filled Standard Sigma
Submerged AV Sensor; 50 ft.
cable
77065-075 Non-oil Filled Standard
Sigma Submerged AV
Sensor; 75 ft. cable
Cables and Interfaces
77065-100 Non-oil Filled Standard
Sigma Submerged AV
Sensor; 100 ft. cable
7725600
Oil-Filled Submerged AV
Sensor Kit
7730000
Oil Filled Standard Submerged
Depth/Velocity (AV) Sensors
(0 to 10 ft. range)
Retrofit Kit (converts non oilfilled to oil-filled); includes kit
Silicon Oil Refill Kit
8713200
77064-030 Oil Filled Standard Sigma
Submerged AV Sensor;
30 ft. cable
Solar Module with 10-Watt
panel and Power Regulator
Assembly
8713300
Solar Module with 20-Watt
panel and power Regulator
Assembly
77064-050 Oil Filled Standard Sigma
Submerged AV Sensor;
50 ft. cable
For current price information,
technical support, and ordering
assistance, contact the Hach
office or distributor serving
your area.
77064-075 Oil-Filled Standard Sigma
Submerged AV Sensor;
75 ft. cable
Lit. No. 2545
F63 Printed in U.S.A.
©Hach Company, 2006. All rights reserved.
In the interest of improving and updating its equipment, Hach Company reserves the right to alter specifications to equipment at any time.
In the United States, Canada, Latin
America, sub-Saharan Africa, Asia,
Australia/New Zealand, and U.S.
exporters, contact:
HACH COMPANY World Headquarters
P.O. Box 389
Loveland, Colorado 80539-0389
U.S.A.
Telephone: 800-227-4224
Fax: 970-669-2932
E-mail: [email protected]
www.hach.com

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