Sutron Corporation 8310 & 7310 Users Manual 8800-1125Rev. 2.7 (BETA) 4/16/2014 pg. 43
Terminology
Understanding some basic 8310 terminology will greatly help you operate the 8310. Take a
moment to familiarize yourself with the following terms:
Measurements -- The 8310 operates to make measurements. Measurements can be as simple
as a single value read from a temperature sensor or more complicated like a vector wind speed
average or dew point measurement. When a measurement is set up in the 8310, it is given a
name and a number. The measurement numbers are M1, M2, and so on and the name is
generally something related to the value being measured – like Wind or Temperature. Each
measurement has its own schedule that defines when data are measured. The complete setup
for the measurement also defines what inputs are measured and how the data are converted,
processed, logged, displayed, and communicated. (See section Measurements for more
information)
Inputs -- Inputs are the signals from sensors or instruments (like a voltage or resistance)
connected to the 8310. Depending on the type of measurement, the 8310 will need to read one
or more inputs. The 8310 has built-in support for analog, digital, SDI, RS232 and other types of
inputs that typically come from an external instrument or sensor. Each input is given a number
to identify it in the unit. This number is generally displayed along with the measurement
number in the form M1I1 (Measurement 1, Input 1). (See section Inputs for more information.
Processing – Most inputs need some kind of processing to convert the value measured (e.g. a
voltage or resistance) into engineering units (like temperature or pressure). The 8310 has built-
in processing for simple slope-offset calculations, polynomial, Steinhart-Hart, and table lookup
to convert the RAW value measured to the desired units. Custom processing steps may be
created using Basic. (See Processing for more information)
Outputs – The 8310 operates on the inputs to produce the outputs. Outputs can be displayed,
logged, transmitted and used in other calculations and measurements. Some measurement
types have just one output while other types have multiple outputs. Each output is given a
number to identify it in the unit. This number is generally displayed along with the
measurement number in the form M1O1 (Measurement 1, Output 1). Outputs also have names
that are often used when the data is logged or communicated. (See Outputs for more
information)
Alarms – The system supports the detection of alarms based on comparing a value with a user
set hi limit, low limit and/or rate of change limit. When a value is in alarm, it is noted in the
Alarm status menu. The 8310 can also be configured to transmit an alarm message when a
sensor goes in to or leaves the alarm state. Alarms can be sent on various supported
communications devices. The intent of the message is to keep a base station up to date
on alarms without having to frequently poll for the status. (See Alarms for more
information)
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