3F8-I2DA FOXBORO

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3F8-I2DA  FOXBORO IO module In Stock

♦ Zeroing does not affect the span.

♦ When the transmitter is zeroed to compensate for installed position effect, the transmitter 

may have either LRV pressure applied (CAL LRV) or zero pressure applied (CAL AT0). 

If the range is zero-based, either method produces the same result. However, if the range 

is not zero-based, it is advantageous to have both methods available.

For example, consider a pressure transmitter having a range of 50 to 100 psig. If it is 

not feasible to vent the transmitter to atmosphere for zeroing, it may be zeroed while 

the LRV pressure of 50 psi is applied by using the CAL LRV function. On the other 

hand, if the transmitter has been installed but there is no pressure in the process line 

yet, it can be zeroed while open to atmosphere by using the CAL AT0 function.

a. Zeroing with LRV Pressure Applied (CAL LRV):

♦ Before using this zeroing function, apply a pressure to the transmitter equal to the 

value of LRV stored in the transmitter database.

♦ When you zero the transmitter, the internal digital value of the pressure is trimmed to 

be equal to the value of LRV stored in the database and the mA output set to 4 mA. 

♦ If zeroing is done when the applied pressure is different from the LRV pressure value 

in the database, the internal digital value of pressure is biased by the difference in the 

values but the output is still set at 4 mA.

♦ The CAL LRV (and CAL URV) function should be used when calibrating a 

transmitter for a specific range with known input pressures applied for the LRV and 

URV.

Product details:

3F8-I2DA  FOXBORO IO module

Contact information：

Contact person：Luna Chen

Email Address:：sales6@saulplc.com

WhatApp： +86 13358378970

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