Dwyer Series PUF - Manual (Page 43)

3: Operating Procedures
39
Calibrating the pulse frequency range
The Calculated Pulse Value field is automatically calculated as:
This value is often required to be programmed into the device that is receiving the pulses to enable it to calculate
the correct flow rate – for example, when connecting the pulse output to an energy meter.
3.9 Printing
Logged data can be printed using an RS232-compatible printer.
3.9.1 How to print logged data using the RS232 printer
This procedure shows you how to set up and use the RS232 printer to print logged data.
Setting up an RS232 connection
1. Connect the PUF to the printer using the printer cable supplied. This cable is fitted with a 9-way D-Type plug
terminated as follows:
4. Ensure that the printer has sufficient paper, is switched ON and ON LINE.
1. With the instrument operating in the FLOW
READING mode, press the Pulse function key
to access the
PULSE OUTPUT screen.
2. Select Max Pulse Freq (Hz) and enter the
required value.
3. Select Flow at Max Freq and enter the
required value (gal/min).
4. Select Exit and press the ENTER key to return
to the FLOW READING screen
PULSE OUTPUT DD-MM-YY HH:MM:SS
A1 Pulse Frequency is ON Qxx.xx%
Flow units : gal
Output : Frequency
Vol per pulse : 10.00
Pulse width (ms) : 10
Max Pulse Freq (Hz) : 10.00
Flow at Max Freq : 200.00
Calculated Pulse Value: 20.0
Exit
Pin 1 – N/C (No connection)
Pin 3 – RxD data from printer to PUF
Pin 5 – Signal ground
Pin 7 – N/C
Pin 9 – N/C Pin 2 – TxD data from PUF to printer
Pin 4 – N/C
Pin 6 – N/C
Pin 8 – N/C
2. Select Setup RS232 / USB from the MAIN
MENU. This will access the SETUP RS232/USB
screen shown here.
3. Set the RS232 parameters to comply with those
for the printer.
SETUP RS232 / USB DD-MM-YY HH:MM:SS
Qxx.xx%
Handshaking : Xon/Xoff
Baud Rate : 1200
Data Bits : 8
Stop Bits : 1
Parity : None
New line : CR+LF
Printer test :
Exit
Calculated Pulse Value
Flow at Max Freq
Max Pulse Freq (Hz)
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