Yokogawa 202 Field Mounting Rate Totalizer - Manual (Page 8)

1.2 OPERATION
The Model 202A Rate Totaliser will display:
Rate
Resettable Total
Accumulated Total.
Both the Rate and Resettable Total are continuously displayed while the
Accumulated Total is only displayed when the ACCUM TOTAL key is pressed.
The Resettable Total can be reset at any time by pressing the RESET key.
The instrument also has a test mode which can be entered by simultaneously
pressing all three front panel keys. The tests are as follows:
Lo Test
By pressing the ACCUM TOTAL key, the low alarm output
will go low.
Hi Test
By pressing the RESET key, the high alarm output:
a. will go low if CAL00 = 0 (high alarm output),
b. will output 100ms pulses every 0.5sec if CAL00 = 1 (scaled
pulse output).
Display Test
By pressing the PROGRAM key, all segments of the display
will show.
To exit the test mode, simultaneously press all three front panel keys.
Note that when the input signal drops below 3.75mA (4-20mA input), a signal
error will occur. The display will alternate between the current total and the
word "SIGNAL". When the input signal drops below
≈
3.5mA the Model 202A
shuts down saving totals in the non-volatile memory.
6 Introduction