PX791 & PX792 SANITARY TRANSDUCERS –
ELECTRICAL CONNECTIONS
Voltage Output Units |
|
|
CABLE TYPE F2 | ||
Red | = | + Power |
White | = | Common |
Green | = | Output |
CABLE TYPE C1 | ||
Red | = | + Power |
White | = | Common |
Green | = | Output |
HIRSCHMANN TYPE | ||
= | + Power | |
= | Common | |
= | Output | |
BENDIX | ||
Pin A | = | + Power |
Pin B | = | Output |
Pin D | = | Common |
Current Output Units |
|
|
CABLE TYPE F2 | ||
Red | = | + Power |
Black | = | Power |
CABLE TYPE C1 | ||
Red | = | + Power |
Black | = | Power |
HIRSCHMANN TYPE | ||
= | + Power | |
BENDIX | ||
Pin A | = | + Power |
Pin B | = | Power |
Ratiometric (mV/V) |
|
|
CABLE TYPE F2 | ||
Red | = | + Power |
White | = | – Power |
Green | = | + Output |
Black | = | – Output |
CABLE TYPE C1 | ||
Red | = | + Power |
White | = | – Power |
Green | = | + Output |
Black | = | – Output |
HIRSCHMANN TYPE | ||
Pin A | = | + Power |
Pin B | = | + Output |
Pin C | = | – Output |
Pin D | = | – Power |
BENDIX | ||
Pin A | = | + Power |
Pin B | = | – Power |
Pin C | = | + Output |
Pin D | = | – Output |
Pin E | = | Shunt Cal. |
Pin F | = | Shunt Cal. |
WARNING:
READ BEFORE INSTALLATION
The diaphragm is very sensitive and fragile! Do not let anything touch the diaphragm but the fluid to be measured. Fluid hammer and surges can destroy any pressure transducer and must always be avoided. A pressure snubber should be installed to eliminate the damaging hammer effects. Fluid hammer occurs when a liquid flow is suddenly stopped, as with
Liquid surges are particularly damaging to pressure transducers if the pipe is originally empty. To avoid damaging surges, fluid lines should remain full (if possible), pumps should be brought up to power slowly, and valves opened slowly. To avoid damage from both fluid hammer and surges, a surge chamber should be installed.
Symptoms of fluid hammer and surge's damaging effects:
a)Pressure transducer exhibits an output at zero pressure (large zero offset). If zero offset is less than 10% FS, user can usually
b)Pressure transducer output remains constant regardless of pressure.
c)In severe cases, there will be no output.