Teledyne 4220 installation and operation guide As described previously for sampler enabling

4220 Flow Meter

Section 2 Programming

determine whether both conditions are necessary for enabling (AND) or whether either condition will enable the sampler (OR). If you select FLOW RATE:

FLOW RATE

• GREATER THAN • • LESS THAN • • RATE OF CHANGE •

You would select one of these options, and then enter a value, as for LEVEL, previously.

The rest of the menus will appear the same as they did for LEVEL and FLOW RATE. D. O., pH, TEMPERATURE, and RAINFALL all require activation in step 1 and use of the appro- priate sensor. Only one parameter condition (pH, D. O.) can be measured by the flow meter at a time. pH and D. O. will not appear on the display at the same time.

It is possible to program the sampler enable option so that it operates in two different modes, latching and non-latching.

To explain this, in the non-latchingmode the sampler will be enabled only as long as the condition that caused the enabling remains outside of “normal.” If the enabling condition returns to “normal,” the sampler enable will turn off until the next time the condition goes outside of “normal.”

In the latching mode, the sampler will be enabled the first time the condition goes outside of normal and the sampler will stay enabled regardless of any later changes to the enabling condition. If this is the case, the following menu will allow you to reset the sampler enable feature. Note that this menu will not appear unless the condition necessary to enable the sampler has been met and the sampler is currently enabled.

WHEN ENABLE CONDITION IS NO LONGER MET

• DISABLE SAMPLER • • KEEP ENABLED •

Or:

ENABLE CURRENTLY LATCHED, RESET

• NO • • YES •

Select YES to reset the sampler enable feature; select NO to leave the sampler enabled.

PRINTER ON/OFF WITH ENABLE

• YES • • NO •

This selection allows you to turn the flow meter's internal printer on or off when the sampler is enabled from the flow meter. This allows you to conserve battery power and only print a chart when the sampler is enabled. This feature is useful for monitoring storm water runoff.

2.4.9Step 7 - Alarm Dialout This step lets you signal an alarm to a remote location from the

Mode	flow meter. The conditions that can cause an alarm are the same
	as described previously for sampler enabling.

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