Controller Sensors 250 User Manual
MODEL 250
CAUTION:
Controller
Black: -
Power Supply
+ Positive
Black: -
Signal
Power Supply
+ Positive
Controller
TRANSDUCER
INSTALLATION
The Model 250 Pressure Transducer is a low
cost wet or dry media application gage unit. This
transducer is available in ranges from 100 to
10,000 PSI and features all stainless steel wetted
parts. The unit produces a 2 wire 4-20mA
output with 1% F.S.O. accuracy. A 3 wire 1-5
VDC output is also available.
INSTALLATION
1. Location- The model 250 pressure
transducer can be placed in a NEMA 4 rated
location, as vibration free as possible.
2. Attachment- The series 250 Pressure
Transducer has a ¼” NPT threaded pressure
port that attaches directly to the pipe in which
the media is delivered. Coat the sensor threads
with an antisieze compound or Teflon tape.
Attach it to the pipe using a 7/8” wrench.
ELECTRICAL CONNECTIONS
The Series 250 Pressure Transducer produces a
4-20mA or 1-5VDC signal. Power requirements
are a minimum of 10 to 30 VDC with a current
requirement of 30mA for the current output unit
and 10mA for the 1-5 VDC output unit.
The sensor is connected via a two or three wire
supply cable.
2 wire device (4-20mA output)
+ = Red
- = Black
3 wire device (1-5 Volt output)
+ = Red
- = Black
Signal = White
Do not exceed specified
supply voltage.
2 WIRE CONNECTION
Red: +
Input
- Negative
3 WIRE CONNECTION
Input
Red: +
White:
- Negative
CONVERTING 4-20MA TO 1-5 VDC
250 Series Pressure transducers can be easily
adapted to controllers requiring 1-5 VDC input.
Insert a 250 ohm resistor between the “+” and
“-” controller input terminals. This will safely
convert the 4-20mA signal to the desired
voltage. The sensor “+” (red) is connected to
the power supply Positive. The sensor “-”
(Black) is connected to the controller input “+”.
The Power Supply “-” is connected to the “-”
controller input.
OFFSET AND SPAN
The model 250 Pressure Transducer is a self
contained sealed unit that is factory calibrated.
As a result the sensor has no user adjustments.
CUSTOMER SERVICE
If any problems are encountered during
installation please call the number below for
assistance.
Call 1-800-735-8998
7638 Washington Ave S
Eden Prairie, MN 55344
+1.800.735.8998 • +1.952.942.8743
FAX +1.952.942.8753
www.controllersensors.com
IN-250 Rev A
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