| |
Series 668 Differential Pressure Transmitter |
| Ranges from 0 to 0.25 in. w.c., Overpressure Protection
to 10 psig, ±1% Accuracy |
| |
| Our low cost Series 668 Differential Pressure
Transmitter is capable of measuring low pressures with a ±1%
accuracy - ideally suited for proper building pressurization
and air flow control. Transmitters can withstand up to 10 psig
overpressure with no damage to the unit. Variable capacitance
sensor design provides excellent sensitivity and long-term stability.
Compact, lightweight design makes installation simple and easy.
Units also feature reverse-polarity protection. |
| |
| SPECIFICATIONS |
Service: Air and non-conductive gases.
Accuracy: ±1% of full scale (RSS), (includes non-linearity,
hysteresis, and non-repeatability).
Temperature Limits: Operating: 0 to 150°F (-18 to 65°C),
Storage: -40 to 185°F (-40 to 85°C).
Pressure Limits: 10 psig (0.7 kg/cm²).
Compensated Temperature Range: 0 to 150°F (-18 to 65°C).
Thermal Effects: 0.033% FS/°F (0.18% FS/°C).
Supply Voltage: 12-30 VDC.
Output: 4 to 20 mA, 2-wire.
Zero and Span Adjustment: ±1 mA, non-interactive.
Response Time: <60 msec.
Loop Resistance: 0-800 ohms.
Electrical Connection: Terminal strip.
Pressure Connection: 3/16" O.D. fitting for 1/4" I.D.
tubing.
Housing: Fire retardant glass filled polyester.
Weight: 3 oz (85 g). |
| |
| Popular Standard Models |
| Model
Number |
Range |
| 668-1 |
0
to 0.25 in. w.c. |
| 668-2 |
0
to 0.5 in. w.c. |
| 668-3 |
0
to 1 in. w.c. |
| 668-4 |
0
to 2.5 in. w.c. |
| 668-5 |
0
to 5.0 in. w.c. |
| 668-6 |
0
to 10 in. w.c. |
| 668-7 |
0
to 25 in. w.c. |
| 668-8 |
0
to 50 in. w.c. |
| 668-9 |
0
to 100 in. w.c. |
|
| |
| Popular Bi-Directional Models |
| Model
Number |
Range |
| 668-10 |
0
to ± 0.1in. w.c. |
| 668-11 |
0
to ± 0.25 in. w.c. |
| 668-12 |
0
to ± 0.5 in. w.c. |
| 668-13 |
0
to ± 1 in. w.c. |
| 668-14 |
0
to ± 2.5 in. w.c. |
| 668-15 |
0
to ± 5 in. w.c. |
| 668-16 |
0
to ± 10 in. w.c. |
| 668-17 |
0
to ± 25 in. w.c. |
| 668-18 |
0
to ± 50 in. w.c. |
| 668-19 |
0-.4
in. w.c. |
|
| |
| Popular Models with Conduit Cover |
| Model
Number |
Range |
| 668C-1 |
0
to 0.25 in. w.c. |
| 668C-2 |
0
to 0.5 in. w.c. |
| 668C-3 |
0
to 1 in. w.c. |
| 668C-4 |
0
to 2.5 in. w.c. |
| 668C-5 |
0
to 5.0 in. w.c. |
| 668C-6 |
0
to 10 in. w.c. |
| 668C-7 |
0
to 25 in. w.c. |
| 668C-8 |
0
to 50 in. w.c. |
| 668C-9 |
0
to 100 in. w.c. |
|
| |
| Popular Bi-Directional Models
with Conduit Cover |
| Model
Number |
Range |
| 668C-10 |
0
to ±0.1 in. w.c. |
| 668C-11 |
0
to ±0.25 in. w.c |
| 668C-12 |
0
to ±0.5 in. w.c. |
| 668C-13 |
0
to ±1 in. w.c. |
| 668C-14 |
0
to ±2.5 in. w.c. |
| 668C-15 |
0
to ±5 in. w.c. |
| 668C-16 |
0
to ±10 in. w.c. |
| 668C-17 |
0
to ±25 in. w.c. |
| 668C-18 |
0
to ±50 in w.c. |
| 668C-19 |
0-.4
in. w.c. |
|
| |
