PHYSICAL DATA
Service: Air and nonconductive, noncorrosive 
gases.
Accuracy: ±0.4% full scale (RSS).
Output: 4 to 20 mA 
DC, 2-wire.
Supply Voltage: 9 to 30 VDC.
Electrical Load: 0 
to 800Ω.
Process Conection: 3/16" O.D. barbed brass 
pressure fitting for ¼" push on tubing.
Span and Zero: Externally 
accessable potentiometers, noninteractive, ±10% F.S. adjustment.
Response 
Time: 250 msec maximum.
Maximum Pressure: 5 times full scale or 10 
psi, (whichever is greater).
Operating Temperature Range: 0 to 175°F 
(-18 to 79°C).
Storage Temperature Range: -65 to 250°F (-54 to 
121°C).
Thermal Effects: <±0.033% F.S. over 40°F to 100°F 
range.
Housing: Fire retardant glass-filled polyester.
Wetted 
Parts: Brass.
Electrical Connections: Three screw 
terminals.
Weight: 10 oz (283 g).
STOCKED MODELS




Model
Number
Range (inches w.c)

677-1
677-2
677-3
677-4
677-5
677-6
677-7
677-8
677-9
677-10
677-11
677-12 

0 to 0.1" w.c.
0 to 0.25" w.c.
0 to 0.5" w.c.
0 to 1" 
w.c.
0 to 2.5" w.c.
0 to 3" w.c.
0 to 5" w.c.
0 to 10" w.c.
0 to 
15" w.c.
0 to 25" w.c.
0 to 50" w.c.
0 to 100" w.c.