Greenlee IPM-300 Manual De Instrucciones página 23

Operation (cont'd)
Calibrate Frequency Inputs
Select the Source mode by pressing the SOURCE/READ button until "SOURCE" appears on the
display.
Display: kHz, Hz, CPM
This function provides pulses into frequency measuring instruments. The meter output is a
zero crossing square wave from -1 V to 5 V amplitude. Available ranges are from 0.01 kHz to
10.00 kHz, 1 Hz to 1000 Hz and from 1 CPM to 1000 CPM. CPM is used to simulate extremely
slow frequency signals with greater resolution. For example, 10 Hz is equivalent to 600 CPM.
To convert from CPM to Hz, divide by 60. To convert from Hz to CPM, multiply by 60.
1. Turn the Selector knob to FREQ.
2. Connect the black and red leads to the meter as shown.
3. Press the RANGE/TYPE button until the desired frequency range appears.
4. Disconnect any input from the instrument being calibrated.
5. Connect the red lead of the meter to the plus (+) input of the device and the black lead to
the minus (-).
6. With the toggle switch at SET, adjust the output to the desired value.
7. Flip the toggle switch to HI or LO to use the stored values. See the Storing Output Values
section to change the stored values.
Frequency Receiver Input
Flowmeter
Controller
Transmitter
Computer
Logger
DCS
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4
1
5V MAX 45V MAX
! !
INPUT INPUT
!
45V
MAX
INPUT
2 3
IPM-300
5
!
300V
MAX
INPUT
T/C
+
–
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