27
ANALOG OUTPUT
All models are provided with the analog output feature.
The output is isolated and can be a voltage or a current.
With the recorder, simply connect the
common port to the ground output and
the second port to the current output
or voltage output (depending on which
parameter is being used) as depicted
aside.
The type (voltage or current) and the range of the output
analog signal is selectable through the jumpers on the power
board.
Configurations of the switch are as follows:
Output Switch 1 Switch 2 Switch 3 Switch 4
0-5 VDC, 1-5 VDC OFF ON – – – –
0-10 VDC ON OFF – – – –
0-20 mA, 4-20 mA – – – – ON – –
0-1 mA – – – – OFF – –
Choice between different ranges with the same configuration
(for example 0-20 mA and 4-20 mA) is achieved via soft-
ware by entering the setup mode and selecting code 40 (see
Setup Mode section for exact procedure).
Factory default is switches 1 and 3 closed (ON) and switches
2 and 4 open (OFF), i.e. 0-20 mA, 4-20 mA and 0-10
VDC.
In any case, contact the nearest Hanna Customer Service
Center for changing of the default configuration.
By default the minimum and maximum values of analog out-
put correspond to the minimum and maximum of the selected
range of the meter. For example, for the HI 700 with a se-
lected 0 to 1999 µS range and analog output of 4-20 mA,
the default values are 0 and 1999 µS corresponding to 4
and 20 mA, respectively.
These values can be changed by the user to have the analog
