SF52 User’s Manual
Michell Instruments 1
INTRODUCTION
1 INTRODUCTION
The SF52 dew-point transmitter is a simple, cost effective sensor designed for use in
harsh industrial dryer applications where reliability and toughness are required at an
economical cost.
The SF52 is available with a choice of G ½” and ½” NPT process connections and
voltage or mA outputs. A key feature of the unit is the recessed and protected measuring
element giving an extended sensor life cycle.
Michell's polymer based sensor is calibrated on a high volume traceable calibration
system, providing OEM quantities of units on short deliveries, each with a 3 point
calibration certifi cate.
1.1 Features
• Ideal for OEM dryer use
• Dew-point measurement range -40 to +60°C (-40 to +140°F)
• Fast response
• Rugged IP65 construction
• 3-point traceable calibration certifi cate
• Accuracy ±2°C
• Voltage or mA outputs
The SF52 is available with a voltage output (0 to 1 V, 0 to 5 V, 0 to 10 V) or
a current output (4 - 20 mA 3 wire).
The current output has a 3 point diagnostic option:
Sensor fault 23 mA
Under-range dew point 4 mA
Over-range dew point 20 mA
These three values are standard factory programmed and are normally switched off.
Other diagnostic settings are available, please contact Michell Instruments for further
information.
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