Max Machinery 294_269 High Resolution, Linearized Frequency Transmitters - Manual (Page 6)

6
Mechanical Installation
1. Attach 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.
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.
Moisture Protection
On all models, the housing is designed as a liquid and vapor-tight enclosure. There are o-ring seals
at the lid and base of the housing – these both need to be fully seated. A properly sealed transmitter
will prevent the formation of damaging moisture inside the housing.
Turck connector Model: The connector is sealed to the lid at the factory and is ready for use.
NPT Model: To ensure a moisture-tight seal, apply appropriate sealant to the threads at installation.
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.
Electrical Installation - Wiring
The electrical connector versions are pre-wired inside the transmitter and ready to accept a mating
cable (available from the factory). The liquid-tight, NPT models need to be wired during installation
as shown in the table below:
an ISO 9001:2008 certified company
Installation - Model 294
NPT model 4-Pin Connector
Connector
Terminal #
Mating Cable
Wire Color
Pin #
Case Ground In-lid Blue 3
Common 1 Black 4
Power 5-26 Vdc 2 Brown 1
Pulse Output 3 White 2
2 1
4 3
Frequency
Single Phase
NPT model 5-Pin Connector
Connector
Terminal #
Mating Cable
Wire Color
Pin #
Case Ground In-lid Blue 3
Common 1 Black 4
Power 5-26 Vdc 2 Brown 1
Output Phase A 3 White 2
Output Phase B 4 Grey 5
2 1
4
5
3
Frequency
Quadrature
Discontinued