PLX Devices® Guide

PLX Devices® Guide
Users Guide: iMFD Sensor Module
iMFD Sensor Module SM-FluidTemp
*Please read the instructions completely through at least once before proceeding with the
installation to minimize errors.
*Double check polarity of power before powering it on for the first time.
Overview:
(Figure 1)
(Figure 2)
1.
2.
3.
4.
5.
6.
7.
Connects to 12V-18V power source.
Analog outputs (0-5V linear output) *For sensor #1 ONLY
Termination jumper. Closed for first SM in iMFD daisy chain.
Connects to next SM in iMFD daisy chain or to first DM
Connects to previous SM or unconnected if first SM in iMFD daisy chain
Connects to PLX Fluid Temp Sensor. Up to 2 sensors can be connected for 2 channel operation.
Fluid Temperature Sensor. (*Using a sensor not provided by PLX Devices may lead to inaccurate readings due to a
mismatch in calibration)
8. 24k Gold Ring Terminal
9. 24k Gold Female Disconnect Terminal
10. Molex Connector Terminals
11. Molex 2 Pin Connector
Install the Fluid Temperature Sensor:
1.
2.
The PLX Fluid Temperature probe screws into a 1/8 NPT tap.
Connect the fluid temperature sensor with the provided 2 pin Molex connector according to the following diagram.
Connections can be made by crimping the terminals or soldering the terminals with the provided wire. *Note the orientation
of the Molex 2 pin connector. A reverse connection will result in inaccurate readings and may damage the device.
(Figure 3)
Users Guide: iMFD Sensor Module
Connecting Power to the Unit:
CAUTION! CONNECTING THE SM-FluidTemp IN REVERSE POLARITY
WILL DAMAGE THE UNIT! CHECK CONNECTIONS BEFORE POWERING
ON.
1.
The SM-FluidTemp accepts 12-18V DC for power. Connect the negative wire (black) to your vehicle’s ground. This is usually
the negative terminal of your automobile’s battery. Connect the positive wire (red) to your vehicle’s ignition power. This
power is only supplied when your key is turned passed a specific position and is off when your key is removed. Your power
connection must be capable of supplying at least 1 amp of current. A 5 Amp fuse is recommended for safety.
*If you plan to integrate the SM-FluidTemp with other aftermarket devices by utilizing the analog output signal wire. Make sure that
the negative wire (black) is connected as close as possible to your device's ground. This guarantees that both devices "see" the same
reference ground and a more accurate interpretation of the output voltages will be achieved. Please refer to the PLXApp notes online
for more information.
2.
3.
4.
Locate the 2.1mm Power plug. Unscrew the plastic cover and insert it into the red/black power wires.
Solder or crimp the red power wire to the CENTER of the connector. (12-18V)
Solder or crimp the black power wire to the SHIELD of the connector. (GROUND)
(Figure 4)
Using the Sensor Module in the iMFD Chain:
1.
If the SM-FluidTemp is the only sensor module or last sensor module in the iMFD chain, be sure to have the termination
jumper installed. Otherwise, remove the jumper. Please refer to (Figure 1) for the location of the termination jumper.
(Figure 5)
Using the Sensor Module Analog Output:
1.
The SM-FluidTemp has one 0-5V analog output designed to be interfaced with a number of aftermarket products such as
engine management systems, data loggers and tuning electronics. It is not mandatory for you to use this output for your
unit to properly function.
Users Guide: iMFD Sensor Module
(Figure 6)
Linear Analog Output (0-5V)
(Figure 7)
Recommended Accessory:
(Figure 8)
DM-5 FluidTemp 52mm Gauge. Ideal for affordable Fluid Temperature
monitoring from your SM-FluidTemp
Included Items:
1.
2.
3.
4.
5.
6.
7.
SM-FluidTemp main unit
4ft red power wire
4ft black ground wire
4ft gray analog output wire
2.1mm power connector
Resistive type fluid temperature sensor (Additional
sensor sold separately)
24k gold ring terminal
8.
9.
10.
11.
12.
13.
24k gold female disconnect terminal
2 pin Molex connector with 2 terminals for sensor
16ft sensor wire
4 pin Molex connector with 4 terminals for analog output
1ft Serial Cable
Termination jumper
14. Quick start guide
Users Guide: iMFD Sensor Module
Specifications:
Physical Dimensions
Accuracy
Measurement Range
Analog Outputs
Operating Voltage
Power Consumption
Operating Temperature
Sensors
Enclosure
2" x 2.875" x 1.125" (52mm x 75mm x 28mm) L x W x H
+- 1 Deg C (+- ~2 Deg F)
0-150 Deg C (32-302 Deg F)
Linear 0-5V (Driving Current 20mA)
8V-18V
0.3 Watts
0 - 85 Deg C
Two Resistive Type Temperature Senders
Extruded Aluminum
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