User guide

Installation

For optimum performance, install the ow meter in one of the congurations shown below. The following items and

conditions should be considered:

Line and Bypass Valves: These valves allow lter cleaning or ow meter removal without completely shutting the system

down and draining the lines. They also allow system start up under conditions which could damage the meter; such as:

air in the lines, high temperature materials, or initial line surges.

Filtration: Clearances between the ow meter piston and cylinder wall are typically 0.0002” to 0.0004”. Any dirt

present in the system can jam or damage the unit. A 10 micron lter (such as a Max 381 Series stainless steel unit) is

generally recommended, although materials with very high viscosities may require a coarser lter. For bidirectional ow

applications, use a lter on each side of the ow meter. Materials with brous or non abrasive particulate matter may

have to be run without lters. Follow the recommendation of your Max Sales Engineer or consult our Technical Service

Department.

Inlet and Outlet Ports: Use the “IN” port as the inlet for the most predominant ow direction. Install the ow meter on

the discharge side of the pump whenever possible. Excessive vibration at the meter should be avoided.

High Temperatures: Use the “Vertical Installation” drawing. This minimizes heat transfer by convection from the ow

meter to the transmitter. The transmitter is the most heat sensitive element in the system and the transmitter manual

should be consulted for specic limits. An optional uid heater block can be used on the ow meter to keep it at

operating temperature during standby conditions. For substances that are solid at room temperature, the block may be

required to keep the material molten and owing through the meter.

Clean Plumbing: Before installing the ow meter, clean the inside of the pipe line with compressed air or steam

(especially when using new pipe). Don’t use water, steam, or compressed air on the meter itself!

Piping Diagram

FILTER

VALVE 2VALVE 1

FLOW METER

VALVE 3

FLOW

BYPASS

FILTER FILTER

VALVE 2VALVE 1

FLOW METER

VALVE 3

FLOW

BYPASS

FILTER

VALVE 1

VALVE 2

FLOW METER

VALVE 3

FLOW

BYPASS

Horizontal Installation

Horizontal Two-Way Flow

Vertical Installation