Max Machinery 290 Series Frequency (269, 294 and 295) - Manual (Page 5)

5 IH 295-000-350 • rev. 6/2011 • ©2010-11 Max Machinery, Inc.
an ISO 9001:2008 certified company
Installation - Model 269
an ISO 9001:2008 certified company
Installation - Model 294
Model 269 - Mechanical Installation
Transmitters are installed on the meter at the factory. If a transmitter needs to be replaced in the
field, use the following procedure:
1. Disconnect the wiring and remove the two socket cap screws to remove the old transmitter.
2. Position the alignment key on the new transmitter with the corresponding notch on the flow
meter and drop into place.
3. Tighten both socket cap screws until snug. Ensure that the transmitter is not crooked, then turn
screws a 1/4 turn. Do not over tighten.
Electrical Connection
This model is wired at the factory. All that is required is to connect the transmitter’s mating cable
into the remainder of the system as follows:
Blue: Case Ground
Black: Common
Brown: Power (+5-26 Vdc)
White: Output Signal
Model 294 - Mechanical Installation
1. Attach the transmitter to the threaded magnet shield on top of the flow meter. Hand tighten. (~ 3 ft-lb) 1
2. If necessary, loosen set screws on the transmitter’s cap and rotate to align cable as desired.
3. Ensure cap is firmly pushed down to seal O-ring. Tighten set screws.
1 Transmitter may be wrench tightened up to 15 ft-lb if it will be subject to vibration or loads. This
additional torque causes relative movement between transmitter and meter, so to ensure optimal
performance, request that the factory apply the extra torque before calibration / compensation, or
run the compensation program in the field after tightening.
Removal
1. Remove electrical connections
2. Unscrew transmitter, using a wrench if necessary.
Removal note: The transmitter does not need to be removed from the flow meter for any field servicing or adjustments.
Normally, the flow meter and transmitter are shipped back to the factory for calibration or service as a unit. If the
transmitter needs to be removed from the flow meter for installation, be sure to retighten the transmitter snugly in order
to seal the O-ring and to ensure proper sensor alignment.