The Series
655 Wet/Wet Differential Pressure Transmitter converts
a positive or a positive differential pressure measurement
into a standard 4-20 mA output signal. Designed for use
as a wet/wet differential pressure transmitter, units can
be used to measure gas or liquid pressures compatible with
316/316L stainless steel wetted parts. With an accuracy
of ±0.5% FS, the Series 655 Pressure Transmitter can measure
5.0 inches w.c. (1.24 kPa), with working pressures up to
a maximum of 300 psi (20.67 bar).
APPLICATIONS
- Refrigeration & HVAC Equipment
- Chill Water Line Pump Monitoring
- Water Filter Monitoring
- Process Control
SPECIFICATIONS
Service: Compatible, gases & liquids.
Wetted Materials: Types 316, 316L SS.
Accuracy: ±0.5% F.S. (Includes linearity, hysteresis
& repeatability.)
Stability: ±1% F.S./year.
Temperature Limits: 0 to 140°F (-17.8 to 60°C).
Compensated Temperature Limits: 40 to 120°F (4.44
to 48.9°C).
Pressure Limits: 300 psi (20.7 bar) continuous; 2000
psi 137.8 bar) burst. A zero shift of up to +/- 2% F.S.
may occur when 300 psi pressure is applied.
Thermal Effect: 0.025% F.S./°F (0.045% F.S./°C).
Power Requirements: 16-35 VDC (2-wire).
Output Signal: 4 to 20 mA.
Zero and Span Adjustments: Accessible potentiometers.
±10% of span.
Loop Resistance: DC; 0-1250 ohms maximum.
Current Consumption: DC; 38 mA max.
Electrical Connections: 3 position plastic terminal
block.
Process Connections: 1/4" female NPT.
Enclosure Rating: Designed to meet NEMA 4X (IP66).
Mounting Orientation: Not position sensitive.
Weight: 1 lb, 11.7 oz (785 g).
FEATURES
- Wet/Wet Low Differential Pressure
- Withstands High Pressure
- Excellent Wetted Materials 316/316L Stainless Steel
- External Span and Zero Adjustments ±10% of span
- Highly Accurate ±0.5% Full Scale
ACCESSORIES
-- See "Ordering" Page
A-228 Stainless
steel flex hose, 12" (30.48 cm) long, 1/8" male NPT connections.
A-229 Stainless steel flex hose, 18" (45.72 cm) long,
1/8" male NPT connections.
A-332 Brass adapter, 1/8" female NPT to 1/4" male
NPT.
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