Rotronic CF5-D CO2 / Temperature Transmitters
Contents
1. rotronic R T GND E asv BL D RXD ey es TXD oo Sem ee ApS Out 1 Out 2 Terminals and jumpers on CF5 D The darker positions are default settings Dimensions 55 7 2 19 84 7 3 33 Dimensions of sensor in mm and inches Dokument Rev IMA 207 22. 1 inch for the sampling probe and two holes with 4 mm diameter for the screws 5 into the air duct and mount the tube 1 with the gasket 2 The sampling probe should be mounted with the largest locking knob on top The unit can be mounted with the air coming from the left or right 3 Attaching the sensor box is made to the sampling probe by a snap in bayonet fitting First carefully stick the temperature probe 11 into the sampling probe 1 Orient the box onto the sampling probe so that the box upside is on the same side as the largest locking knob 3 When the probe is fitted into the notches of the box then turn the box clockwise until stop see Figure 1 Position 1 indicates open where the box can be removed from the sampling probe In position 2 the box is locked to the probe If for some reason the PCB must be removed it must be handed carefully and protected from electrostatic discharge Normally removing the PCB is not required Dokument Rev Page IMA 207 2 2 4 rotronic Electrical connections N The power supply has to be connected to and b L is considered as system ground If the analogue output is connected to a controller the same ground reference has to be used for the CF5 D unit and for the control system Unless different transformers are used special precautions need to be taken PLEASE NOTE The CF5 D signal and power supply grounds are common NOTE The same ground reference has to be use
3. d for the CF5 D unit and for the control system Connect the power after mounting The analogue output should be connected before measuring Connection Function Electrical Data Remarks Terminal Power 24 VAC DC 20 3W 2W without output load See note 1 n Power ground 24 VAC DC Out 1 Analogue Output 1 0 10 VDC or 0 20 mA According to positions of 2 10 VDC or 4 20 mA Out 1 and start point jumpers See note 2 Out 2 Analogue Output 2 Same as Output 1 According to positions of Out 2 and start point jumpers See note 2 Not marked Signal Ground Connected to via PTC See note 1 fuse Note 1 The ground terminal is used as negative power supply DC input or AC phase ground halfwave rectifier The signal ground M protected by a PTC resistor is the same as power ground permitting a 3 wire configuration A single transformer may be used for the entire system Note 2 CF5 D can deliver a voltage or a current loop for Out 1 Out 2 To change between voltage and current output mode the hardware jumpers are used There is one jumper for Out 1 and one for Out 2 so that one output can be a voltage output and the other a current output Both voltage output and current outputs can have start points 0 0 10 VDC or 0 20mA or 20 2 10 VDC or 4 20mA The same start point is used for both outputs See the user manual Dokument Rev Page IMA 207 2 3 4
4. ro tronic Installation manual CF5 D CF5 D Disp CO temperature transmitter for mounting in ventilation ducts zJ G Figure 1 1 Sampling probe 6 O ring 29 2x3 53 Factory supplied mounted in box 2 Sealing gasket 7 PCB Factory supplied mounted in box 3 Largest locking nob 8 Snap in lid 4 2 washers 9 PG9 cable entry bushing 5 2 screws 10 Temperature sensor to be put into the sampling tube Dokument Rev Page IMA 207 2 1 4 rotronic Mounting of CF5 D on to the duct Figure 2 10 Hole with 25 mm diameter 11 Temperature sensor with 110 mm cable mounted in the sampling probe Mounting Instruction Since there might be a substantial pressure difference in duct mounting applications it is essential to avoid ambient air from suction into the duct mounting box For correct function it is indispensable that the sealing of the box cover the cable entry bushings the cable feed through and the duct entrance are absolutely tight The duct entrance may need extra sealing paste in order to prevent leakage The PCB must be handed carefully and protected from electrostatic discharge 1 Electrical cable entry The box has a factory mounted cable entry bushing in dimension PG9 Never feed more than one cable through each cable entry bushing or else gas might leak through A Mounting the tube Drill a hole 10 with 25 mm diameter or
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