Hach ANATEL PAT700 User Manual - 2.3 Plumbing Connections

Page 18

Installation

2.3 Plumbing connections

CAUTION

Potential eye and/or burn hazard! The water inlet can rupture if water pressure is 

too high. Sample inlet pressure must not exceed 100 psi (690 kPa).

Note: Improper plumbing connections to the analyzer can cause improper flow through the analyzer, 

resulting in measurement error.

Do not allow temperature or pressure to exceed the limits listed in

Table 1

. Install high 

grade 1/4” (OD) PTFE, FEP, PVDF, or 316 stainless steel tubing. Otherwise, install the 

factory-supplied 1/4” PFA (perfluoroalkoxy resin) inlet tubing and 1/4” OD polypropylene 

outlet tubing. HACH Company supplies 5 feet (1.5 meters) of PFA tubing and 10 feet (3 

meters) of polypropylene tubing with the analyzer.

Install an appropriate air brake in the drain line between the instrument and the drain. 

The outlet drain tubing must be open to atmosphere at the drain.

Table 1  Maximum temperature and pressure limits for PFA tubing

Maximum water temperature

Maximum pressure

75 °C (167 °F)

90 psig (620 kPa)

85 °C (185 °F)

80 psig (550 kPa)

90 °C (194 °F)

70 psig (480 kPa)