Moniteur Transmitter Series IO3-0405 - Manual (Page 2)

Calibration Instructions for Moniteur
Transmitter Series - Form IO3-0405
Verify the position of the valve/actuator package to ensure that the valve is in the 4mA reading position
(normally the valve closed position).
Connect positive and negative leads to the appropriate terminal points. Insure that voltage values are within
units rated values.
Connect a milliamp meter to the circuit. Lift the large center gear slightly from the main transmitter shaft and
begin to rotate clockwise. Watch the amp meter while rotating. Reading will slowly decrease until the
potentiometer's limit has been reached. At this point, the milliamp output will jump or zero out. Stop rotation
of the main gear. Rotate the main gear counter-clock-wise approximately 1 tooth (10degrees).
Release the main drive gear so that it re-engages with the main drive shaft.
With a small screw driver, turn the adjustment screw on the transmitter board adjustment pot("zero") until the
meter reads 4mA (See Fig A).
Cycle the valve 90 degrees to the full open position.
Turn the adjustment screw on the transmitter board adjustment pot ("span") (See Fig. A)
until the meter reads 20mA.
Cycle the valve and recheck outputs at both ends of stroke. Make readjustments as necessary.
Close the transmitter housing. Tighten all screws.
1.
2.
3.
4.
5.
6.
7.
8.
9.
Instructions for clock-wise to close operation. See
reverse instructions for counter-clock wise to close.
M O N I T E U R D E V I C E S I N C O R P O R A T E D
3 6 C o m m e rc e R o a d , C e d a r G ro v e , N J 0 7 0 0 9 Te l . ( 9 7 3 ) 8 5 7 - 1 6 0 0 F a x ( 9 7 3 ) 8 5 7 - 7 2 8 9
w w w . m o n i t e u r d e v i c e s . c o m
Calibration Procedure (Resistive Output Models)
Reverse Instructions
To use the transmitter with valve systems that rotate in the
counter-clock-wise direct to close, remove all power from the
system. On the circuit board terminal block, the BLACK and
WHITE wire leads must be switched. Connect the BLACK lead
to the terminal point marked (W) and the WHITE lead
connected to the terminal point marked (B). Tighten terminal
block screws. Lastly, when following directions listed above,
reverse the rotation (words in bold print) of the directions. (i.e.
clockwise becomes counter-clock-wise). Follow directions
above.
Potentiometer
Main Drive Gear
Figure B