BHB Partech 715 Portable User manual

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715 Portable
MANUAL
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JUNHO 2013

INSTRUCTION MANUAL
715 Portable
Portable Sludge Blanket Detector

715 Portable – Instruction Manual
Table of Contents
1 Introduction.................................................................................................................................4
2 Operation....................................................................................................................................5
2.1 Operation Test................................................................................................................5
2.2 Sludge Interface Detection..............................................................................................5
2.3 Cleaning..........................................................................................................................5
2.4 Reeling Technique..........................................................................................................5
3 Configuration...............................................................................................................................6
3.1 Detection Point................................................................................................................6
4 Technical Support.......................................................................................................................7
4.1 Returning Equipment for Repair.....................................................................................7
5 Technical Specification...............................................................................................................8
5.1 General...........................................................................................................................8
5.2 Sensor.............................................................................................................................8
156770IM-Iss06 Issue Date 12/05/2010 Page 3 of 10

715 Portable – Instruction Manual
1 Introduction
The 715 Portable Sludge Blanket Level Detector is designed for spot checking sludge interface
levels in settling tanks. The 715 works by measuring the change in the level of suspended solids
as the sensor is lowered into the tank. When the sensor reaches the sludge blanket, an audible
signal changes from a fast bleeping to a slow bleeping. A red LED provides a visual indication
that the sludge blanket has been detected. To enable measurement of the sludge interface
position in a tank, the sensor cable is marked in one-metre intervals from the sensor.
The 715 consists of two main parts, a cable reel and an IR sensor. The cable reel houses the
detector electronics and battery and is also used to store the sensor cable when not in use. The
715 is supplied with either an IR8, IR15, IR40 or IR100 sensor as required for the application.
The IR sensors use light attenuation across a single measurement gap to determine the
suspended solids in a solution. The length of the sensing gap determines the measurement
range of the sensor.
               
71 5
PARTECH
REELING HANDLE
SENSOR CABLE CLIP
SENSOR
ON/OFF SWITCH
INTERFACE LED
BATTERY COMPARTMENT
FRONT PANEL FIXING SCREWS (4 OFF)
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715 Portable – Instruction Manual
2 Operation
The 715 is ready for operation once the power switch is moved to the ON position. Before using
the 715 to determine the sludge interface position, it is worthwhile performing the operation test
below.
2.1 Operation Test
The operation of the 715 can be quickly checked. When the unit is switched on and the sensor
gap is clear (sensor in air or in clean water) the unit should emit a fast bleep and the LED should
not be illuminated. If the sensor gap is then blocked, the unit will switch to a slow bleep and the
LED will illuminate. Unblocking the sensor should return the unit to a fast bleep with the LED off.
2.2 Sludge Interface Detection
Release the sensor and allow it to hang below the cable reel. Slowly lower the sensor into the
settling tank, listening for a change in the sounder output. When the sound changes, the sludge
blanket has been detected, and the lowest visible cable marking indicates the position of the
sludge blanket below the supernatant surface.
2.3 Cleaning
After use the sensor should be cleaned by rinsing with clean water. On a regular basis the
sensor and sensor cable should be cleaned by rinsing with a solution of water and a mild
detergent. The cable reel can be cleaned using a damp cloth and mild detergent.
Note: The cable reel should not be immersed
2.4 Reeling Technique
When using the 715, the sensor cable should not be allowed to go slack when reeling the
sensor in or out. If the cable is allowed to become slack, it is possible for the cable to jam inside
the cable reel – if this does occur the cable must be carefully freed – the cable reel must not be
forced.
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715 Portable – Instruction Manual
3 Configuration
3.1 Detection oint
The unit has an adjustable detection point, which is factory set to 50%. This has been found to
be suitable for most applications and it is unusual for a user to need to adjust it. However if it is
found necessary to make an adjustment, the following steps should be carried out.
1. Obtain a sample of supernatant and sludge from the intended application.
2. Reel out sufficient cable to allow the sensor to be placed into the samples.
3. Unscrew and remove the front panel from the cable reel. There should be sufficient
cable such that the circuit board is exposed.
4. The detection point control is located on the circuit board and can be accessed through
a hole in the circuit board.
5. The most sensitive detection point is set when the control is turned fully counter
clockwise and the least sensitive detection point is when its is turned fully clockwise.
6. Switch the 715 on. Turn the detection point control fully clockwise. The unit should emit
a fast bleep.
7. Place the sensor into the sludge sample. A fast bleeping should be heard. Turn the
detection point control slowly counter clockwise until a slow bleeping is heard and the
interface LED lights.
8. Place the sensor into the supernatant sample. A fast bleeping should be heard and the
detection LED should be off.
9. The unit is now set for operation. Switch the unit off and replace the front panel into the
cable reel. Replace the four securing screws.
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SENSOR
CONNECTION
BLUE (-)
RED (+)
DETECTION POINT CONTROL
715 CIRCUIT BOARD

715 Portable – Instruction Manual
4 Technical Support
Technical Support is available by phone, fax, or email, the details of which are shown below.
•Phone: [phone]
•Fax: [phone]
•Email: [email protected]
•Website: www.partech.co.uk
To enable us to provide quick and accurate technical support please have the following
information ready when you contact us:
•Serial Number or original purchase details
•Sensor Type, and Serial Number
•Application details
•Description of fault
4.1 Returning Equipment for Repair
If equipment needs to be returned to Partech for repair or service the following address should
be used:
SERVICE DEPARTMENT
PARTECH (ELECTRONICS) LTD
CHARLESTOWN
ST AUSTELL
CORNWALL
PL25 3NN
UNITED KINGDOM
Please include the following information with the returned equipment. Also ensure that sensors
are adequately protected for transportation (Advice on packing can be provided by our service
department).
•Contact name and phone number
•Return address for equipment
•Description of fault or service required
•Any special safety precautions because of nature of application
156770IM-Iss06 Issue Date 12/05/2010 Page 7 of 10

715 Portable – Instruction Manual
5 Technical Specification
5.1 General
Batter T pe: ..................................9VDC (Alkaline Batter PP3)
Batter Life......................................>200 Hours
Operating Temperature Range.......0 to 50 ° C
Storage Temperature Range..........-20 to +60 ° C
Environmental Rating......................IP65
Cable T pe......................................4 core, pol urethane coated
Standard Cable Length...................10 metres
Maximum Cable Length..................15 metres
Cable Marking.................................Ever Metre
Weight.............................................1.2 Kg
Dimensions.....................................280 x 230 x130mm (hxwxd)
5.2 Sensor
Measuring Principle.........................Light absorption
Light Source....................................Infrared LED, 950nm
Environmental Rating......................IP68
Materials..........................................Hastello , PVC, Epox Potting Compound
Parameter IR100 IR40 IR15 IR8
Maximum Supernatant (mg/l) 180 1350 9000 27000
Minimum Sludge (mg/l) 20 150 1000 3000
Weight (g) 350 300 250 250
Width (mm) 160 100 75 75
Height (mm) 95 95 95 95
Depth (mm) 25 25 25 25
The maximum supernatant value is the point at which the 715 will not detect sludge.
The minimum sludge value is the starting point for detection of sludge.
Note: The values quoted are based on the typical solids found on a municipal sewage
treatment works.
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Partec h (E lectronics ) Ltd
C harles town, S t Aus tell, C ornwall PL25 3N N , UK

Contactos/Contacts:
Comercial/Commercial:
Fernando Mena Costa
e-mail: fcosta@bhb,pt
Tel: [phone]
Fax: [phone]
Assistência/Service:
Patricia Costa
e-mail: [e-mail]
Tel: [phone]