Siargo MEMS Mass Flow Meters Siargo Ltd. Page 7
5. When the flow rate exceeds the maximum displayable reading, both I-LED and II-LED will
blink simultaneously, which implies that the reading is incorrect (since the reading has been
rounded off to fit the display, although the measurement may still be correct).
Flow accumulation mode
1. In this display mode, the two LED indicators are turned on.
2. The flow accumulation is displayed as an 8-digit numeric number in a time-division scheme.
When the first LED indicator (I-LED) turns on, the 4-digit LED panel displays the more
significant digits of the flow accumulation. After 1 second, the second LED indicator (II-LED)
turns on and the 4-digit LED panel displays the less significant digits of the flow accumulation.
3. The flow accumulation unit is SL. The flow accumulation reading can be reset to zero by a
key operation.
NOTE: The flow accumulation will be saved every 3 minutes. For instance:
1, The flow accumulation will not be saved if power off @ 2 minutes.
2, The flow accumulation will be the value of 33 minutes if power off @ 34 minutes.
Maximum / minimum mode
1. In this mode, the maximum flow rate and the minimum flow rate (since the last power-on or
the last maximum/minimum flow rate resetting) will be displayed.
2. When the maximum flow rate is shown, I-LED will turn on and the 4-digit LED panel will blink.
3. When the minimum flow rate is shown, II-LED will turn on and the 4-digit LED panel will blink.
Menu Setting Mode
Under the menu setting mode, various operations including keyboard lock/unlock, flow accumulation
reset, automatic offset calibration, gas selection, response time setting, display refresh setting,
maximum/minimum flow rate reset can be performed.
Keyboard lock
1. Prevent unintentional modifications of system parameters.
2. After the keyboard is locked, the user will be unable to perform any other menu settings
unless the keyboard is unlocked by the user.
Flow accumulation reset
Reset the flow accumulation reading to 0 SL, and the flow accumulation counts re-starting
at 0 SL.
Automatic offset calibration
Perform offset calibration, which is used for resolving the possible offset drifting after certain
period of operation.
NOTE: Before performing automatic offset calibration, please ensure that the gas in the pipe is
static, i.e., at zero flow. Otherwise, it may cause inaccuracy during the measurement.
