Teledyne 6712FR Refrigerated Sampler Installation/Preparation, considerations, Suction Line

6712FR Refrigerated Sampler

Section 2 Installation/Preparation

then rinses the line. The suction line is purged after each rinse. When programmed for sampling retries, the sampler will attempt to pump a sample again if it fails on previous attempts.

2.5.1 Measuring Sample “Sample volume” refers to the amount of liquid delivered into a

Volumebottle. The volume is determined by the programmed value. The volume is dependent on the volume per revolution of the pump, which is dependent on the suction head. The 6712FR delivers the sample by counting the pump revolutions and automatically compensating for the suction head.

2.6Installing the Sampler The following segment briefly describes initial sampler instal- lation.

CAUTION

Tests indicate that the pump produces sound levels in excess of 85db at one meter. Prolonged exposure to this sound could result in hearing loss and requires the use of protective ear plugs.

CAUTION

When using the 6712FR sampler with a 750 or 710 module, transmitters such as cell phones or walkie talkies must not be operated within 3 meters of the sampler. If water level readings are fluctuating due to TV/radio station transmitter towers in the area, the sampler must be relocated.

WARNING

The 6712FR samplers have not been approved for use in hazardous locations as defined by the National Electrical Code.

	WARNING
	If you must enter a manhole or other dangerous location to
	install the sampler, observe standard safety precautions.
	Refer to Appendix C for a discussion of safety
	considerations.
2.6.1 Tips for Routing	Route the line so that it runs continuously downhill from the
Suction Line	sampler to the liquid source. This helps drain the line during
	pre-sample and post-sample purges. When the sampler is used in
	below freezing temperatures, there is a risk of the suction line
	being frozen. A suitably warm sampling source can usually
	prevent this, provided there are no loops in the suction line.
	Some situations may require more protective measures, such as
	insulation of the suction line, or heat tape. Thoroughly draining
	the suction line minimizes the possibility of frozen liquid
	clogging the line.

2-10