YEO-KAL 615 User manual

Yeo-Kal Electronics Pty Ltd 18/26 Wattle Road, Brookvale NSW Australia
Telephone [phone] Fax [phone]
USER MANUAL
Model
615 Water Quality Analyser
For firmware V1.23
Version
3.2
Date
26/4/2013
Information in this document is the copyright of YEO-KAL Electronics Pty Ltd and is subject to change
without notice. No part of this document may be copied or reproduced by any means without the
express written permission of YEO-KAL Electronics Pty Ltd. All trademarks are the property of their
respective companies.
© 2012 Yeo-Kal Electronics Pty Ltd

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Contents
INTRODUCTION......................................................................................... 5
GENERAL DESCRIPTION.................................................................................... 5
SPECIFICATIONS.............................................................................................. 5
Reader Unit:........................................................................................... 5
Sensors: ................................................................................................. 6
Temperature.......................................................................................... 6
Conductivity........................................................................................... 6
Salinity ................................................................................................... 6
Dissolved Oxygen................................................................................... 6
Turbidity ................................................................................................ 6
pH........................................................................................................... 7
ORP ........................................................................................................ 7
Depth (optional) ................................................................................... 7
Two auxiliary inputs............................................................................... 7
Physical .................................................................................................. 7
DESCRIPTION OF READER UNIT ......................................................................... 8
Connector Pins....................................................................................... 8
DESCRIPTION OF PROBE................................................................................. 10
Temperature Sensor............................................................................ 11
Dissolved Oxygen Sensor..................................................................... 12
Conductivity Sensor............................................................................. 12
Turbidity Sensor................................................................................... 12
PH/ORP Sensor .................................................................................... 12
ASSEMBLY................................................................................................13
CONNECTING THE PROBE ASSEMBLY................................................................ 13
CONNECTING AN EXTERNAL POWER SUPPLY ..................................................... 13
OPERATION..............................................................................................14
OPERATING INSTRUCTIONS............................................................................. 14
KEY PAD DESCRIPTION .................................................................................. 14
The menu options are as follows: ....................................................... 15
ADJUST CONTRAST (1) .................................................................................. 16
ALTITUDE AND SALINITY CORRECTIONS (2) ....................................................... 16
USING THE READER UNIT MEMORY................................................................. 16
Store Data Out (3) ............................................................................... 16
Erase Store data (4) ............................................................................. 17
LOGGED DATA OUT (6)................................................................................. 17
START LOGGER (5) ....................................................................................... 23

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PROGRAMMING THE READER UNIT.................................................................. 23
CHECK BATTERY (7)...................................................................................... 24
DATA PORT OFF/ON (8) .............................................................................. 24
SENSOR SERIAL NUMBER (9) ......................................................................... 25
SET UP MENU...........................................................................................26
SET CLOCK (1) ............................................................................................. 26
611 SETUP (2) ............................................................................................ 26
ASSIGN/DEL SENSORS (3).............................................................................. 26
CONFIGURE DISPLAY (4)................................................................................ 26
SET PRECISION (5)........................................................................................ 27
DATE FORMAT (6)........................................................................................ 27
INSTRUMENT TIMEOUT (7) ............................................................................ 27
SET FILE IN (8) ............................................................................................. 27
SET FILE OUT (9).......................................................................................... 28
BEEPER (10)................................................................................................ 28
TURBIDITY AVERAGE (11).............................................................................. 28
ID SENSOR INPUTS (12) ................................................................................ 28
LIGHT KEY ................................................................................................... 28
CALIBRATION ...........................................................................................29
TEMPERATURE CALIBRATION .......................................................................... 31
HIGH CONDUCTIVITY/SALINITY CALIBRATION .................................................... 31
LOW CONDUCTIVITY CALIBRATION................................................................... 32
DISSOLVED OXYGEN CALIBRATION ................................................................... 32
PHCALIBRATION .......................................................................................... 33
ORP CALIBRATION ....................................................................................... 34
TURBIDITY CALIBRATION................................................................................ 34
DEPTH CALIBRATION ..................................................................................... 35
INTERNAL BLUETOOTH AND GPS ..............................................................36
BLUETOOTH................................................................................................. 36
One off Pairing:.................................................................................... 36
GPS 36
ESTABLISHING BLUETOOTH AND GPS POWER ................................................... 37
Enable power:
Enable GPS functionality:
Display GPS data to screen and memory allocation
MAINTENANCE.........................................................................................38
READER UNIT MAINTENANCE ......................................................................... 38
RESET......................................................................................................... 38
BATTERY REPLACEMENT ................................................................................ 39
................................................... 37
................................................... 37

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D.O. SENSOR MAINTENANCE ......................................................................... 39
Changing the Membrane.....................................................................40
Dissolved Oxygen Stirrer Maintenance............................................... 40
PH/ORP SENSOR MAINTENANCE ................................................................... 41
TURBIDITY SENSOR MAINTENANCE.................................................................. 42
CONDUCTIVITY SENSOR MAINTENANCE............................................................ 43
STORAGE .................................................................................................45
APPENDIX 1 - CONVERSIONS USED .........................................................46
APPENDIX 2 - COMPLIANCE ....................................................................47
APPENDIX 3 - PART NUMBERS ................................................................48

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Introduction
The YK615 comes already assembled. The only construction required is to connect the probe assembly to the
Reader Unit and, if necessary, connect the external power supply.
General Description
The YK615 Water Quality Analyser is a robust multi-parameter field instrument which can be used for real time
water quality measurements or for remote operation using a built in data logger.
The instrument consists of a multi-sensor probe and a Reader Unit which can both store and display data and
also has extra auxiliary analog probe inputs. The probe and Reader Unit have been designed to be compact, light
weight and easy to use. Data is transferred to the Reader Unit using serial communications giving reliable,
interference free measurements. The Reader Unit controls the operation of the instrument, provides easy
access to the data, control, memory and calibration functions. The Reader Unit contains a real time clock and all
stored data includes the date and time of measurement. Both stored data and calibration information can be
easily down loaded to a computer using the YEO-KAL data transfer programs.
The YK615 comes with storage container to protect the sensors while the instrument is in storage.
An optional auxiliary battery lead is available for connecting the YK615 to an external power supply during
extended periods of remote logging.
Specifications
Reader Unit:
Display:LCD with four lines of 16 alphanumeric characters.
Memory: Remote logging - 2425samples. Real time (STORE key) 840samples. All samples include date,
time plus optional GPS if assigned. Memory is backed up by lithium battery to guard against main battery
failure.
Headers: 75 for STORE key data; 25 for logged data. Note: each header is 18 characters long.
Sample Rate: 1 per 2 minutes to 1 per day in Standard Logging Mode. 1 per second in Fast Logging Mode.
Display updates every 2 seconds.
Communications: Baud rate 9600, 8 data bits, 0 parity, 2 stop bits.
Power: Battery pack containing 8 "C" size cells. Memory backup voltage supplied by ½ AA lithium cell.
Case: Impact resistance polycarbonate; waterproof display, keypad, connectors and case.
Dimensions: 130 mm x 95 mm x 190 mm
Weight:1.6 kg

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Sensors:
Temperature
Range: -2 - 50ºC
Accuracy: ±0.05ºC
Resolution: 0.01ºC
Type: pt 100 platinum element
Conductivity
High Range: 0 - 80 ms/cm
Accuracy: ±0.05 ms/cm
Resolution: 0.02 ms/cm
Low Range: 0-8000 us/cm
Accuracy: ±5 us/cm
Resolution: 3 us/cm
Type: Four electrode cell
Salinity
Range: 0 - 60 ppt
Accuracy: ±0.05 ppt
Resolution: 0.02 ppt
Type: See Appendix 1 -Conversions Used
Dissolved Oxygen
Range: 0 - 200% saturation
0 - 20 mg/l
Accuracy: ±0.5%
Resolution: 0.1%
Type: Active silver and lead electrode sensor with PTFE* membrane and built-in stirrer
Turbidity
Range: 0 - 600 ntu
Accuracy: ±0.5 ntu (0 - 300 ntu range)
±5 ntu (300 - 600 ntu range)
Resolution: 0.3 ntu
Type: Nephelometric measurement from a 90°sensor with pulsed infra-red light source

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pH
Range: 0 - 14
Accuracy: ±0.03
Resolution: 0.01
Type: Combination silver/silver chloride type with sintered Teflon* junction
ORP
Range: -700 mV to +1100 mV
Accuracy: ±3 mV
Resolution: 1 mV
Type: Combination bare metal electrode common reference junction with pH electrode (see
Appendix 1 -Conversions Used)
Depth (optional)
Range: 0 - 100 m or
0 - 150 m
Accuracy: ±0.5% of full scale
Resolution: 0.1 m
Type: Dual active silicone strain gauge
Two auxiliary inputs
Input: 0-5 volts each input
Physical
Cable length: 3 m or 10 m. Other lengths made to order.
Dimensions: 50 mm diameter, 320 mm long

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Description of Reader Unit
The Reader Unit is housed in a tough, durable, high impact polycarbonate case with a keypad and alpha-numeric
display mounted on the front panel. The side of the case has five connectors. The top connector is used for data
output, the second for connecting an external power supply and the third is the sensor connector. The two
remaining connectors are used for auxiliary analog probe inputs and a GPS input. Each connector is provided
with a protective cap which screws over the connector ensuring full waterproof sealing. The connectors also
have a polarising pin so that incorrect connection cannot be made. Inside the Reader Unit a CPU controls the
operation of the instrument, memory stores data and 8 C size rechargeable batteries power the instrument.
Connector Pins
The connector pins on the Reader Unit connectors are numbered in clockwise order from the polarising pin (see
figure 1). The following table lists the purpose of each pin on the connectors.
Communications Auxiliary Power 611 Sensor
Pin 1 Ground Negative Ground
Pin 2 RS232 out Positive Data
Pin 3 RS232 in n/a +12V
GPS Auxiliary Sensor 2
Pin 1 Ground Ground
Pin 2 Signal 0-5V Signal 0-5V
Pin 3 +12V +12V

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Figure 1: Reader unit for the YK615 : a) Top view
showing key pad and alphanumeric display b) End
view showing connectors.

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Description of Probe
The probe assembly consists of sensor, cable and connectors. The body of the probe is made of PVC with a PVC
sensor guard. The interface cable is permanently connected to the probe body to eliminate the need for
underwater connectors. In the event of the cable being cut, the probe has a waterproof seal between the cable
connection and the internal electronics package. At the other end of the cable is a corrosion and water resistant
connector for connection to the Reader Unit.
The sensors can easily be accessed by sliding the sensor guard up and rotating the bottom section of the probe.
(see fig 2b)
The conductivity and dissolved oxygen sensors can be removed for servicing. However, the whole unit must be
thoroughly dry before these sensors are removed. A cotton bud can be used to dry the spaces in between the
sensors.
Figure 2: a) Complete probe assembly b) Sensor cluster exposed
by lifting sensor cage and rotating probe base C) Expanded view
of sensor cluster with dissolved oxygen sensor detached.