YSI 3100 - Manual (Page 5)

1
1. Introduction
The YSI Model 3100 is a microprocessor based instrument designed to perform laboratory
measurement of conductivity, salinity and temperature. The instrument’s push button operation
makes it simple to use.
The Model 3100's microprocessor allows the system to be easily calibrated with the press of a
few keys. Additionally, the microprocessor performs a self-diagnostic routine each time the
instrument is turned on. The self-diagnostic routine provides you with useful information about
the cell constant, function of the instrument circuitry, and the quality of the readings you obtain.
The system simultaneously displays temperature (in
o
C), along with one of the following
parameters: conductivity (in
µ
S/cm or mS/cm), temperature compensated conductivity, (in
µ
S/cm or mS/cm), and salinity (in parts per thousand [ppt]). You can switch back and forth from
salinity, conductivity, and temperature compensated conductivity with a single push of the
[MODE] key.
The new YSI 3200 series conductivity cells contain internal temperature sensors for temperature
measurement and automatic temperature compensation. The Model 3100 is also compatible with
YSI 3400 series conductivity cells when used with the YSI Model 3232 cell adapter. However
3400 series cells do not contain an internal temperature sensor, therefore, when using a 3400
series cell, temperature measurement, temperature compensation or salinity measurement is not
possible.
1.1 Capabilities
•
Adjustable reference temperature 15 to 25 °C
•
Automatic temperature compensation
•
Adjustable temperature compensation factor 0 to 4%/°C
•
Adjustable Cell constant, ranges:
0.01, 0.08-0.12, 0.8-1.2, 8-12
•
Auto or manual ranging
•
Conductivity or Salinity readings
•
7-pin mini DIN connector with thermistor connections
•
AC line power