Manual Mode; Manually Operating The Sample Pump; Manually Operating The Distributor Arm; Measurements Triggered By Liquid Levels Or Flow - Hach Sigma 900 User Manual

5.9 Manual Mode

5.9.1 Manually Operating the Sample Pump

5.9.2 Manually Operating the Distributor Arm

5.10 Measurements Triggered by Liquid Levels or Flow

8837prg.fm
1. To manually operate the pump, place the sampler in standby state. The
sampler is in standby state when the display reads
, or
PROGRAM HALTED
2. To operate the pump, press either the
cause
MANUAL MODE - PUMP/PURGE/CLEAR
Pressing the key causes the pump to run in the forward (sample)
PUMP
direction as long as the key is held. Pressing the
pump to run in the reverse (purge) direction.
3. To run the pump continuously in either direction without having to hold
down the or
PUMP PURGE
to appear on the display. Then press either the
LOCK-PUMP/PURGE
or key.
PURGE
4. To stop the pump, press the
the key. Pressing
OFF
.
PUMP/PURGE/CLEAR
5. To exit the manual mode, press the
sampler to the standby state.
6. While the sampler is in standby, a sample cycle can be initiated by
pressing the
TAKE SAMPLE
When the sampler is in Multiple Bottle mode and on Standby mode, manually
advance the sample distributor arm to the next bottle by pressing
.
ADVANCE
The sampler can operate in any one of three control modes, using an external
controlling device (i.e. Liquid Level Actuator, Cat. No. 943, or an external flow
meter). In any of the three modes, the sampler remains in a standby state until
liquid at the sample source reaches a predetermined level. This feature may
be also used to access the setup of the storm water monitoring program, First
Flush. The three modes are described below:
Mode 1
The instrument collects a sample within the first minute that the liquid rises to
the predetermined level. After the first sample is taken, the sample interval
automatically resets to the programmed interval.
If the liquid falls below the predetermined level, the sampler continues
to collect samples at the programmed time or flow interval, until the
program ends.
Mode 2
The instrument collects a sample within the first minute that liquid rises to the
predetermined level. After the first sample is taken, the sample interval
automatically resets to the programmed interval. The sample program ends if
liquid falls below the predetermined level. If the liquid again rises to the
.
PROGRAM COMPLETE
or
PUMP PURGE
to appear on the display.
keys, press the key. This will cause
*
key or turn the sampler off with
STOP PUMP
returns the display to
STOP PUMP
CLEAR ENTRY
key.
Section 5
,
READY TO START
key. This will
key causes the
PURGE
PUMP
key. This returns the
BOTTLE
Page 43
Manual Mode