Dwyer pressure transmitter series 673

The low cost Series 673 Pressure Transmitter is a fixed range
transmitter designed for harsh environments and suitable for high shock
and vibration applications. Constructed of stainless steel, the Series 673
provides a 4-20 mA output signal with 0.25% accuracy. Use the Series
673 in industrial OEM equipment, hydraulic systems, HVAC equipment,
industrial engines and compressor controls.
INSTALLATION
Electrical Connections
The Series 673 Pressure Transmitter is a true 2-wire, 4-20 mA current
output device and delivers rated current into any external load of 0-800
ohms. The transmitter has a two wire cable where red is positive and
black is negative. Connect shield to system or earth ground.
The 4-20 mA current output units are designed to have current flow in
one direction only - please observe polarity. We suggest that the
electrical cable shield be connected to the systems loop circuit groun
to improve electrical noise rejection.
Media Compatibility
These transmitters are designed to be used with any gas or liquid
compatible with 17-4 PH stainless steel.
Pressure Fitting
Typically, standard pipe fittings and procedures should be used.
However, for pressure ranges in excess of 500 psig, we suggest the use
of a sealant. Excessive torquing of metal fittings may cause a slight zero
shift. The use of plastic fittings typically results in no noticeable zero
shift. Torquing does not appreciably affect linearity or sensitivity.
MAINTENANCE
Upon final installation of the Series 673 Pressure Transmitter, no routine
maintenance is required. A periodic check of system calibration is
recommended. The Series 673 is not field serviceable and should be
returned if repair is needed (field repair should not be attempted and
may void warranty). Be sure to include a brief description of the problem
plus any relevant application notes. Contact customer service to receive
a return goods authorization number before shipping.

SPECIFICATIONS
Service: Compatible, non-combustible liquid, gas, or vapor.
Wetted Materials: 17-4 PH stainless steel.
Accuracy: RSS* (at constant temperature) 0.25%
Non-Linearity: (BFSL) 0.22% FS
Hysteresis: 0.10% FS;
Non-Repeatability: 0.05% FS.
Temperature Limits: -40 to 185F (-40 to 85C
Pressure Limits: 2 X full scale range.
Compensated Temperature Range: -40 to 176F (-40 to 80C
Thermal Effects: Zero Shift: 2.0% FS/100F (1.8% FS/50C);
Shift: 1.5% FS/100F (1.3% FS/50C); Warm-up Shift: 0.
total.
Stability: 0.5% FS/year.
Response Time: 5 milliseconds.
Supply Voltage: 9-30 VDC.
Output: 4-20 mA**, 2-wire.
Zero and Span Adjustment: Fixed.
Loop Resistance: 0 to 800
Shock: 200 g.
Vibration: 20 g.
Electrical Connections: 2 ft (61 cm) multi-conductor cable.
Conduit Models: 1/4?-18 (22.3 mm) knockout.
Enclosure: Stainless steel and Valox.
Weight: 2.3 oz (65 g).
Agency Approvals: CE.

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