HF scientific MicroTSCM Streaming Current Monitor - Manual (Page 22)

MICROTSCM (07/09) Page 18
REV 2.4
8.0 Additional Features and Options
8.1 Sensor Gain Switch
The gain toggle switch is mounted on the side of the sensor housing. The purpose of the
gain switch is to increase the magnitude of the sensor’s response. The gain switch can be
used in applications where little response is noted to changes in coagulant dosing. When
deciding to use the gain switch try the LOW setting first. If the response is not adequate,
use the HIGH setting. Always be sure this switch is turned to OFF (center position) when
calibrating.
As increasing the gain may over-range the reading, this feature should not be used unless
the reading is near zero.
8.2 Remote Panel Meter (Catalog # 19609)
The optional remote panel meter allows for remote indication of the SCU reading using
the 4-20 mA loop of the MicroTSCM. No external power is required, as the meter is
powered from the 4-20 mA source of the MicroTSCM analyzer.
8.3 Optional Flow Switch (Catalog # 19886L)
The flow switch is actually a float level switch. This is a factory installed option that will
alert an operator to a lack of flow. Once actuated a low flow condition will be indicated on
the screen as well as sending the 4-20 mA signal to ground and closing the alarm contacts.
There is a user setting in the analyzer to determine how long a lack of flow is required to
initiate an alarm.