External Dimensions
SD-50 Detector

Dual Scattered-Light Sludge Density Meter

CV-50 Converter
240
Detector installation
direction mark210
74

Converter
mounting blacket

127

4 φ6401

318

SD-50 achieves the accurate measurement of sludge density,and helps to control the sludge discharges.

(30)

Detector cable
φ10285

200

340

φ135

φ100

4 φ19

φ20

Detectingsection137

4 φ11190

JIS 10K 32A
equivalent ﬂange

Vinyl-covered metal
ﬂexible conduit

Detector connection pipe (diameter:80A) 1,2
Ball valve
Clackvalve

Detector connection pipe (diameter:100A to 600A)1,2Ball valve

Solenoid valve
Automatic cleaning mechanism

Pressure reducing valve

Solenoid valve
Pressure reducing valve

Clackvalve

Strainer pipe

Strainer pipe

Sludge samplingvalve (Rc3/4)

ACleaning nozzle

Automatic cleaning mechanism

G1/2

Detector of sludge
density meter

Cleaningnozzle

Rc1/2

Detectorof sludge
density meter

A

G1/2

Anti sludge adhesion function

TYPE
SD-40
CABLE
10m
TAG No. HDVA0211
063041
No.
RANGE
8.00%

Cross section
A-ASludge
samplingvalve (Rc3/4)

Detector connection
structure(390)

Cross sectionA-A

150
400500Detector connection
structure(390)

Increased
maintainabilityA130290500

1: Install the pipe so that the detector is kept horizontal.
2: The cleaning nozzle and pressure reducing valve are optional.

Installation PositionFirst
sedimentation basin

Finalsedimentation
basin
Reaction tank

Raw sludge

Return sludge

Disinfection facilities
River

Sand basin

Incinerator

Excess sludge
Digestion chamber
Concentrationchamber

To disposal site

Installing example of detector connection pｉpe

Digested sludge
Thickened sludge

Separated liquid

Dehydrator
Sludge measurable with SD-50*Speciﬁcations in this catalog are subject to change without prior notice due to product improvement.

URL : https://www.jfe-advantech.co.jp/eng /Tokyo Office (Overseas Sales Department )JFE Kuramae Bldg. 2F, 2-17-4 Kuramae, Taito-ku, Tokyo
111-0051, Japan
Tel.+81-3-5825-5577 Fax.+81-3-5825-5591
Water Environment Division
3-48,Takahata cho, Nishinomiya, Hyogo,663-8202, Japan
Tel.+81-798-66-1502 Fax.+81-798-65-7025
EC-SD50-02A

Stable measurementof black sludge

Rc1/2TYPE
SD-4010mCABLETAG No. HDVA0211
No.
063041
8.00%
RANGE

A

Dual Scattered-Light

23.12.0000 Ⓙ

Renewed detector and converter

Improved
operability

Features

Speciﬁcations

Measuring range

By using the self-cleaning function and cleaning nozzle (optional), sludge
adhesion is reduced. Maintainability has improved.
By adopting a touch panel for the CV-50 converter, operability and visibility have been improved. In addition smaller, lighter, and has improved
weather resistance.

A(Light sludge)
B

Scattered light(Intensity)

Light-emitting ﬁber（A）

Light-emitting ﬁber（B）

A(Dark sludge)

BMeasuring accuracy ±2% of full scale (for sludge other than black sludge)(Repeatability)±5% of full scale (for black sludge) 2
Measurable flow speed+D

0.03m/s or higher (for sludge other than black sludge)
0.30m/s or higher (for black sludge) 2

SGDetector water pressure resistance 1Mpa
Material

SUS316WeightApprox. 4.4㎏ (including 10m cable 3 )Sludge density

The detector section irradiates two types of near infrared rays (A and B) from the endof the emitting optical ﬁbers, receives the scattered light reﬂected from the sludge inthe receiving optical ﬁber and converts it to an electrical signal.

Performance Comparison

The dual scattered-light system automatically compensates for the eﬀect caused bya change in sludge color and ensures accurate measurement of black sludge.

Slightly black sludge)

Black sludge(Decomposed concentrated sludge)

SD-50detector■ CV-50 Converter(Digestive sludge)

Color

Casing Munsell N4 equivalent

WeightApprox. 3.8㎏ (Converter main unit only)

Power supply

90 to 264VAC,50/60HzOutput

Manually analyzed density

Manually analyzed density

Eﬀect of Slugde Self-cleaning Design■ Self-cleaning function■ Cleaning nozzle (Option)

Detector (Light-receiving/light-emitting optical ﬁber face)

Flow of sludge

Cleaning withwater

Flow of sludge
Althoughself-cleaning is
eﬀective,sludge
is adhering.

Photocoupler insulation input(built-in power supply :24VDC,5mA)

Cleaning output

Control AC voltage output 4
output (Allowable load（AC OUT） 200VA or less)Self-diagnosis
function 6

Detector/converter intercommunication error,
failure detector,failure parameter

Alarm signal output

a contact, b contact selection(2 points,contact rating:240VAC,1A)
Density alarm

Control a contact 5output (contact rating:（Cleaning） 240VAC,1A)

Failure signal output c contact (contact rating:240VAC,1A)
Touch panel type liquid crystal display (with backlight)
Display
power
supply ±10kV
section

Detectorconnection pipe
Solenoid valve
terminal
1block2ba

External control
contact input(Photocoupler
isolated input)

EXT.control+INCOM

Solenoid valve
control output forcleaning the detector(AC voltage output)1

AC OUTAC OUTCleaning
contact output（Rating : 240VAC,1A）
Power supply
90 to 264 VAC
50/60Hzcleaning

ACACG

Current±10kV
output±5kA
sectionThe following options are available separately, please contact us for any details.
・Converter stand・Converter mounting bracket and 50A pole mounting U-bolts

1:Converter mounting bracket are provided with the product. Converter stand , converter mounting bracket and 50A pole mounting U-bolts are sold separately.
2:When the solenoid valve of the detector connection pipe is operating, it is 36W or less.
3:Concentration display during pump stop, concentration signal hold, detector automaticcleaning linked to pump stop (a contact, b contact selection)
4:The AC voltage to the control output (AC OUT) is the same as the power supply voltage(90 to 264VAC 50/60Hz) to the converter.
5:It operates at the same timing as the control output of the cleaning output.
6:For details,see the instruction manual.

Class-D grounding 2(for instrument grounding)
1: The AC voltage output to the solenoid valve control output for cleaning the detector(AC OUT) is the same as the power supply voltage (90 to 264VAC 50/60Hz) to theconverter.
The voltage specifications of the standard cleaning mechanism are rated 100VAC,50/60Hz.
Please contact us if the power supply voltage to the converter is other than 100VAC.
Also, do not short-circuit the terminals because it may cause equipment failure.
2:Be sure to connect the grounding terminal (G) to ground potential.
(Class D grounding:ground resistance of 100Ω or less).

■ Detector connection pipe
Cleaning withwater

Flow of sludge

Diameter 1

80A,100A,150A,200A,250A,300A,
350A,400A,450A,500A,600A

Length 1500mmMaterialConnection

SUS304(Piping body)

Flange standard

No cleaning nozzle

Failure signal ouput（Rating : 240VAC,1A）

DC4 to 20mA (1channels)
Density output

External control
contact input 3

Optional

Manually analyzed density

NG

Power consumption Approx. 15W 2

Operating temperature range −10 to 55℃
IP66
Protection level

Dual scattered-light system
Single-light system
Manual analysis value

Alarm signal output（Rating : 240VAC,1A）

Munsell 5PB6/8 equivalent

Built-in lightning protection circuit

Output

ALM1
Alarm signal output（Rating : 240VAC,1A）
ALM2Casing Aluminum die cast (ADC12) Front panel acrylic

Lightning protection
Output+Io−Io

Mounting method 1 Mount to a pole or on a wall
Material

Panel+A−A+TST−TST(Lower block terminals)
Analog output(DC4 to 20mA）

Allowable load resistance 800Ω or less

The scattered light intensity of the received light is determined by the density andcolor of the sludge for each wavelength of the light. SD-50 reduces the inﬂuence ofthe sludge color through automatic correction using the diﬀerence of the correlation
characteristic.

+D−D+V−VSG−D+V−V

Operating temperature range −5 to 50℃（No freezing alloowed)

Analog output

Light-receiving ﬁber((Upper block terminals)

0 to 8% (Standard) 1

1:Please contact us for other measurement ranges.
2:Recommended value for black sludge equivalent to digestive sludge.
3:Maximum cable length is 50m.

Measuring Principle

Slightly light-colored sludge

CV-50 converter

Measurement system Dual scattered-light system
Detecting section Direct-contact ﬁber optic system

Noise resistance is improved by digitizing the detector output.

Slightly decomposed concentrated
crude sludge■ SD-50 Detector

Not to be Used
(Terminals for pre-shipment inspection only)Black sludge is also stably measured by calculating the correlation characteristics using a composite light source (Dual Scattered-Light).

Device wiring diagram

With cleaning nozzle

Appearance of detector after approximately one
week of continuous measurement of gravity-concentrated sludge.

Cleaning frequency has improved from once/two or three days to once/two
weeks or more.

The ﬂow of sludge prevents it from adhering to the detector (Light-receiving/light- emitting optical ﬁber face).

B y using a clea ning n oz zle , slu dge a d h esio n is p reve nte d eve n with hig hly visc o us
concentrated sludge.

Display example

Flange connection
10K ﬂanged of Japanese Industrial Standards (JIS) or
7.5K ﬂanged of Japan Water Works Association (JWWA)

FF type or RF type
Flange shape
Automatic cleaning mechanism AttachedOptional

Cleaning nozzle , Pressure reducing valve

1:Please contact us for specifications other than the above.

Measurement display example

Setting display example