Teledyne 6712FR Refrigerated Sampler Extended Programming, Dual Sampler Mode Dual Sampler Mode

6712FR Refrigerated Sampler Section 5 Extended Programming

5.18.2 Programming Style

5.18.3 Measurement Interval

MEASUREMENT INTERVAL

5 15 30 SECONDS

1 2 5 MINUTES STORAGE INTERVAL

5.18.4 Dual Sampler Mode

Dual Sampler Mode

DUAL SAMPLER MODE?

YES NO

•Select YES to put the sampler in the dual sampler mode. When you no longer need dual samplers, return to this screen to turn the feature off.

The sampler has two different styles of programming screens: normal and quick view. These are both explained in Section 3.

When you are in extended programming, the default style is Quick View, which allows you to move more quickly through the screens.

If you prefer a step-by-step display for the screens, switch to the Normal setting.

If using a 700 Series module or SDI-12 Sonde parameter for enabling, the sampler will request a Measurement Interval. The Measurement Interval allows the sampler to compare the parameter to the enabling conditions at a rate faster than the Data Storage interval. If the Measurement Interval is equal to or greater than the Data Storage interval, the parameter will be checked at the rate of Data Storage interval.

Normally, there are two considerations when selecting the Mea- surement Interval: power consumption and duration of the enabling event. This setting for battery powered samplers will require some degree of balance between the need to conserve power yet detect the enabling event before it has passed.

Dual Sampler Mode lets you operate two samplers as a pair. The primary sampler disables the secondary one until the primary sampler completes its sampling program. The samplers then reverse roles with the second sampler becoming the primary one.

Setting Up Dual Samplers –

1.Turn on the dual sampler mode in both samplers.

2.Install the samplers.

3.Connect the samplers with the Dual Sampler Mode Inter- connect Cable by attaching the cable to the sampler’s flow-meter connectors. If your installation includes a flow meter or flow logger, use the Dual Sampler Mode to Flow Meter Cable instead.

4.Decide which sampler is to be the primary sampler; the primary sampler should be the sampler with the program you want to run first.

5.Turn the primary sampler on and run its sampling pro- gram by selecting RUN. After at least 5 seconds, turn the secondary sampler on and select RUN from its main menu.

How Does It Work? – The primary sampler sends a disable signal out its flow meter connector. The secondary sampler receiving the signal is held disabled until the primary sampler completes its program.

When using a flow meter or flow logger a Dual Sampler Mode to Flow Meter cable must be used. This cable is constructed so that the pacing instrument receives only the event marks. Therefore, a connected flow meter will not receive a bottle number signal, nor will it be able to control the sampler inhibit.

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