TCS 682-15, Руководство по обслуживанию, Страница: 4 / 24

METER APPLICATION
When installing a meter into a system, several factors must be considered.
Flow Rate
The flow rate of the system must be within the meter's capability. The 682 meter can operate
between 0.2 and 40 GPM. The flow rate of the system is dependent upon the system's pump
capabilities, and the plumbing configuration, and the product to be measured.
Operating Pressure
The 682 meter can operate at pressures up to 150 PSI (10.5 BAR).
Compatibility
Produc ts with suspended solids in them will scratch the piston liners and tear the plunger cups.
The liquid to be metered must also be compatible with the meter. The standard petroleum (SP) is
for service in petroleum with the meter. The all ferrous (AF) is for industrial and agricultural
products, and the stainless steel (SS) is for service on products, which required 316 stainless steel
for proper handling. Note that the 682 meter should not be used on water. Water has no
lubricity and will drastically shorten the meter's service life. It is recommended that if the meter
is to be used on water, it should be derated about 40 to 50 percent of flow.
Operating Temperature
The temperature range of the product to be metered must be within the meter's range. The SP
meter can operate between -20°F and 200°F. The AF and SS meters can operate between 20°F
and 400°F. Temperatures above 200°F require a heat extension.
Registration
The 682 meter normally uses a Veeder Root 5-wheel resetable register in 1/10
th
U.S. gallons,
with an 8-digit non-resetable totalizer. Litre’s, ounces, pounds or nearly any other unit of
measure can be accommodated upon request.
Weights & Measures Approved Device
The TCS model 682 series flow meter holds the National Type Evaluation Program (NTEP)
Certificate of Conformance meeting the National Institute of Standards and Technology (NIST)
Handbook 44 requirements. The TCS model 682 series flow meter combines outstanding linear
accuracy (+/-0.1% over entire 200:1 range) with superior performance. At constant flow, with
all other conditions being constant, the flow meter does not vary more than +/- 0.01% in
repeatability. The TCS model 682 series flow meter is virtually unaffected by changing
viscosities. The inline meter design allows the TCS model 682 series flow meter to have a wide
operating range (0.2 to 40 GPM) and fluid compatibility that has been proven over many years of
service.