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Series 648 Differential Pressure Transmitter |
| Ranges Down to 0.1" w.c., ±1% Accuracy,
High Overpressure Protection |
| |
 Series
648 Differential Pressure Transmitter enables precise measurement
and control of differential pressures for filter monitoring,
clean room pressurization monitoring, velocity pressure measurement,
airflow control, fan tracking, and VAV control. The transmitter
is designed with a variable-capacitance sensor for high sensitivity
and greater repeatability. The compact size allows easy installation
for panel or field mounting. Units include reverse polarity
protection.
See
Dimensions |
| SPECIFICATIONS |
Service: Clean, dry air and compatible, non-corrosive
gases.
Wetted Materials: Stainless steel, nickel plated brass, glass
and silicon.
Accuracy: ±1.0% F.S.O. (includes linearity, hysteresis,
and repeatability).
Stability: ±1.0% F.S.O./yr.
Temperature Limits: -20 to 160°F (-29 to 71°C).
Pressure Limits: 10 psig (0.7 kg/cm²).
Compensated Temperature Range: 40 to 125°F (4 to 52°C).
Thermal Effects: Zero: ±0.025% F.S.O./°F, Span: ±0.025%
rdg/°F).
Power Requirements: 12-36 VDC.
Output Signal: 4 to 20 mA, 2-wire.
Zero and Span Adjustments: Zero adjustable: ±5%, Span
adjustable: ±3%.
Response Time: 250 ms.
Loop Resistance: 600 O @ 24 VDC.
Current Consumption: 3.6 mA.
Electrical Connections: Screw terminals.
Process Connections: Barbed for 1/8" or 1/4" I.D.
tubing.
Housing: Stainless steel, NEMA 1 case.
Weight: 4.5 oz (128 g). |
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| Popular Models |
| Model Number |
Range |
| 648-0 |
0 to 0.1" w.c. |
| 648-1 |
0 to 0.25" w.c. |
| 648-2 |
0 to 0.5" w.c |
| 648-4 |
0 to 1" w.c |
| 648-6 |
0 to 0.2" w.c. |
| 648-9 |
0 to 5" w.c. |
| 648-10 |
0 to 10" w.c. |
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