Page 1
Installation and Maintenance
Sensing Solutions since 1959
INSTRUCTION MANUAL
U3M-148 Ultrasonic Sensors
U3M-148 Ultrasonic Sensors
Specifications
Model U3M-148
Beam Angle 12°
Range 0.33 - 9 ft.
Resolution 0.03”
Temperature
Electronic Enclosure
Pressure 5 Bar
Ingress Protection NEMA 6 (IP68)
Input Power 12 - 30 VDC
Output 4 - 20 mA
Cable 5’ - 24AWG
Mounting 1.0” NPT
Option
-S15 (Sanitary) 1.5” Ferrule
-S20 (Sanitary) 2” Ferrule
-3/4 (Adapter)
-HTP (High Temp &
Pressure Nozzle)
-485 (Communication) RS-485
-R (Relay)
1
2
- 40 to 140°F
3/4” Adapter
-40 to 266°F
SPDT
8A@230VAC
DIMENSION
Model A B C
U3M-148 1.125”Ø 1.95” 1” NPT
1. Not available with S15, S20, HTP option.
2. Includes 5’ - 18AWG Cable.
Madison Company, Inc.
27 Business Park Drive
Branford, CT 06405
© 2018 Madison Company, Inc., MAD_MAN_MF-163_060518
203-488-4477 or 800-466-5383
ISO 9001 Certied
ECN #10900, Effective Date 08/2018, MF-163, Rev B
info@madisonco.com
www.madisonco.com
MADE IN THE USA
Page 2
INSTRUCTION MAN
UAL
U3M-148 Ultrasonic Sensors
Installation and Maintenance
U3M-148 Ultrasonic Sensors
Sensing Solutions
12-30VDC
Suppl
y
Proces
s
Meter
since 1959
+
U3M-XXX
+
-
Power In
ut
mA O
ELECTRICAL S
POWER DC
OUTPUT
PECIFICATION
12-30VDC, 0.07A Max @ 24VDC
R
LOA
4-20mA, 6.1uA Resolution
= (Vs
D
- 6) / 24mA
Power Su
Elec
trical Connection
y
ppl
Optional Relay Output
5 to USB
RS48
Panel
MD4815
Meter
Alarm
Pump
Sol
enoi
Val
d
e
v
wayPC
Computer
Madison Company,
Inc.
Gate
Software
27 Business Park Drive
Branford, CT 06405
© 2018 Madison Company, Inc., M
20
ISO 9001 Certied
AD_MAN_MF-163_060518
ECN #10900, Effective Date 08/2018, MF-163, Rev B
3-488-4477 or 800-466-5383
info@madisonco.com
www.madisonco.com
MADE
IN THE USA
Page 3
Installation and Maintenance
Sensing Solutions since 1959
INSTRUCTION MANUAL
U3M-148 Ultrasonic Sensors
1.
2.
3.
4.
U3M-148 Ultrasonic Sensors
In Application Calibration
NOTES:
If the Full Level (Near Target) is set to 20mA, then the Empty Level (Far Target) must be set to 4mA.
If the Full Level (Near Target) is set to 4mA, then the Empty Level (Far Target) must be set to 20mA.
Most common issue is setting 20mA & 4mA to same target. Unit will not function properly if this is the case.
Out Of Application Calibration
RED = 4mA
YELLOW = 20mA
Sensor can be pointed at wall, floor, or solid object to do calibration.
CALIBRATION: 20-4mA
FULL 20mA (Near Target)
Power on sensor. STATUS LED should be Green. Set
near target (Full Level). Aim sensor to near target.
Push and hold Calibration Button until LED turns YELLOW (20mA). Approximately 2 seconds. Release button. LED should flash and return to Green to
acknowledge the calibration. If not repeat step 1.
STATUS LED should be Green. Set far target (Empty
Level). Aim sensor to far target.
Push and hold Calibration Button until LED turns RED
(4mA). Approximately 7 seconds. Release button.
LED should flash and return to Green to acknowledge
the calibration. If not repeat step 3.
EMPTY 4mA (Far Target)
1. Power on sensor. STATUS LED should be Green. Set
near target (Full Level). Aim sensor to near target.
2. Push and hold Calibration Button until LED turns RED
(4mA). Approximately 7 seconds. Release button.
LED should flash and return to Green to acknowledge
OR
the calibration. If not repeat step 1.
3. STATUS LED should be Green. Set far target (Empty
Level). Aim sensor to far target.
4. Push and hold Calibration Button until LED turns
YELLOW (20mA). Approximately 2 seconds. Release button. LED should flash and return to Green
to acknowledge the calibration. If not repeat step 3.
CALIBRATION: 4-20mA
FULL 4mA (Near Target)
EMPTY 20mA (Far Target)
Madison Company, Inc.
27 Business Park Drive
Branford, CT 06405
203-488-4477 or 800-466-5383
ISO 9001 Certied
© 2018 Madison Company, Inc., MAD_MAN_MF-163_060518
ECN #10900, Effective Date 08/2018, MF-163, Rev B
info@madisonco.com
www.madisonco.com
MADE IN THE USA
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