
5
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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