4.7.5.2 Procedure for Conversion of EZ Electronics to
Digital ES II Electronics
REMOVAL OF THE EZ TRANSMITTER:
1. Remove power from the EZ unit.
2. Remove the transmitter and terminal housing covers.
3. Disconnect the field wiring in the terminal strip housing.
4. Unplug the LVDT wiring from the 8-pin connector at P1.
5. Remove the c-ring on the enclosing tube above the LVDT
using snap ring pliers.
6. Slide the LVDT up, off the enclosing tube. It may be nec-
essary to clip the wiring tie-wrap from the PC board.
7. Remove the white plastic positioner ring at the base of the
enclosing tube.
8. Loosen the set screws in the hub of the housing base, and
carefully lift the entire assembly off the enclosing tube.
INSTALLATION OF THE ES
II
REPLACEMENT:
1. Remove the dummy enclosing tube (if provided) from the
new ES II housing assembly.
2. Remove the transmitter and terminal housing covers.
3. Lower the complete ES II assembly onto the existing
enclosing tube, being careful not to bend the enclosing
tube. Make sure the housing set screws are loose so that the
assembly fits tightly to the enclosing tube nut. As you
lower the assembly, guide the PC board assembly mounting
bracket onto the enclosing tube.
4. Replace the white plastic positioner on the enclosing tube
making sure it is snug against the enclosing tube base;
then, slide the LVDT down the enclosing tube until it rests
firmly on the white plastic positioner.
5. Replace the c-ring at the top of the enclosing tube.
6. Connect the 8-pin LVDT into the socket at J1.
7. Connect the field wiring to the terminals in the terminal
housing. Check the terminal markings for +/- polarity.
8. Replace the transmitter housing cover.
9. Apply power and check for output signal.
10. Calibrate the transmitter as described in Sections 3.4 & 3.5.
38
48-618 ES/EZ Modulevel Displacer Level Transmitter (Top Hat Assembly Design)
ENTER
UP
DOWN
E
R
R
O
R
S
P
A
N
Z
E
R
O
(—)
P2
(+)
P1
¤
— TB1 +
E S MODULEVEL
¤
5300 BELMONT ROAD,
DOWNERS GROVE, IL 60515,
USA.
HEIKENSSTRAAT 6,
B 9240 ZELE,
BELGIUM.
www.magnetrol.com
REFER TO MODULEVEL MANUAL,
BULLETIN 48-615, FOR
INSTALLATION AND OPERATION
INSTRUCTIONS.
TP1
TP2
J1
05-9123-001
ASSEMBLY PART NO.
C-ring
TBI
J1
Bracket Screws
Figure 28
