Installation & Operation Manual
2. If you suspect that the sensor is bad, you can test the
monitor circuitry by connecting a piece of wire to one
of the sensor input terminals and tap the other side of
the wire to the other sensor input terminal. Shorting
across the sensor input terminals ON and OFF
repeatedly allows the display to respond by trying
to calculate a flow rate for the frequency of your
shorting action. If the display does not show a change
from 0.00, it indicates a problem with the monitor.
3. If the monitor tests ok and there are any splices in the
cable, break the sensor cable at the splice closest to
the sensor and retry the shorting test in step 2.
4. If the cable tests ok, drain the pipe line, verify the
pressure is off, remove top lock nuts holding the
sensor electronics. Spin the impeller by hand. If flows
are noted on the display, and impeller spins freely
then the flow rates may have been below our design
minimums or the line was full of air. Try again. If the
sensor fails to respond then replace sensor.
SPECIFICATIONS
Wetted Materials for all sensors
•
See Technical Brief for material specifics
Sensor Sleeve and Hex Adapter for 220BR, 225BR, and
226BR
•
Sleeve: admiralty brass, UNS C44300; hex adapter:
valve bronze, UNS C83600
Sensor Sleeve and Hex Adapter for 220SS and 226SS
•
Series 300 stainless steel
Temperature Ratings
•
Standard version: 2210F (1050C) continuous service
•
High temperature version: 2850F (140.60C) continuous
service; 3050F (1500C) peak temperature (limited
duration)
Pressure Ratings
At 1000F
At 3000F
220SS
400 psi
325 psi
220B
400 psi
325 psi
225B
300 psi
210 psi
226B
400 psi
250 psi
226SS
400 psi
300 psi
Recommended Design Flow Range
•
0.5 to 30 ft/sec
•
Initial detection below 0.3 ft/sec
Accuracy
•
± 1.0% of full scale over recommended design flow
range
Repeatability
•
± 0.3% of full scale over recommended design flow
range
Linearity
•
± 0.2% of full scale over recommended design flow
range
Transducer Excitation
•
Quiescent current 600uA@8VDC to 35VDC max.
•
Quiescent voltage (V
high
)
Supply Voltage -(600uA*Supply impedance)
•
ON State (V
Low
) Max. 1.2VDC@40mA current limit
(15ohm+0.7VDC)
Output Frequency
•
3.2 Hz to 200 Hz
Output Pulse Width
•
5 msec ±25%
Electrical Cable for Standard Sensor Electronics
•
20 feet of 2-conductor 20 AWG shielded U.L. type
PTLC wire provided for connection to display or
analog transmitter unit. Rated to 1050C. May be
extended to a maximum of 2000 feet with similar
cable and insulation appropriate for application.
Electrical Cable for IR Sensor Electronics
•
48 inches of U.L. Style 116666 copper solid AWG 18
wire with direct burial insulation. Rated to 1050C.
Page 13
August 2012
