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HUBA
694 Series Differential Pressure Transmitter
2-Wire, 4-20 mA output, F.S. Ranges ±0.2” w.c. to 4.0“ w.c.
DESCRIPTION
Type 694 series differential pressure transmitters incorporate a proven diaphragm driven ceramic fulcrum lever technology. They deliver calibrated, temperature-compensated sensor signals, available as standard 4-20 mA current output. They are ideal for registering low static pressures and air flow in air conditioning systems and for the measurement of pressure relationships in environmental, laboratory and clean-room applications.
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1) Diaphragm
2) Ceramic sensor element
3) P1 higher pressure/lower vacuum
4) Optional Display
5) Amplifier electronics
6) Connection terminals
7) Cover
8) P2 lower pressure/higher vacuum |
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Ceramic sensor element with piezoresistors in a Wheatstone Bridge configuration and built in signal conditioning offers outstanding performance and long term stability.
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SPECIFICATIONS
Pressure ranges: See order code selection table.
Max Pressure: See order code selection table.
Burst pressure: 500 mbar(7.25 PSI)
Accuracy Calculation: Terminal point method
Accuracy including Linearity, Hysteresis & Repeatability:
F.S. Ranges ±0.2 and 0.4 “ w.c.- <±2% f.s.
F.S. Ranges above 0.4 “ w.c.- <±1% f.s.
Case Construction: Polycarbonate Lexan 141R, Fire
classification to UL94
Cover: ABS Plastic
Diaphragm: Two-component silicone LSR
Operating Temperature: 0 °C to +70 °C
Storage Temperature -10 to +70 °C
Effect of Temperature on Zero: < +/- 0.04 % fs/°C*
Effect of Temperature on Span: < +/- 0.02 % fs/°C*
*For Ranges to 0.4 “ w.c, multiply values x 2.5
Response time < 10 ms
Resolution: Ranges to 0.4 “ w.c: < 0.2 % fs
Ranges above 0.4” w.c.:< 0.1 % fs
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Pressure connections: 3/16” I.D. Tubing
Weight: 90 grams
Installation Orientation: Vertical (factory
calibrated)
Power Supply: 12-33 Vdc
Short circuit proof and protected against
polarity reversal.
Load Impedance: 1100 Ohms Max
Electromagnetic compatibility: CE conformity to
EC directive 89/336 EEC (EMC) by
application of harmonized
standards IEC 61000-6-3
and EN 61000-6-2.
Electrical Connection: Screw terminals for wire
and stranded conductors up
to 16 gage.
Cable gland with built-in strain relief Pg 11
Thread (1/2” NPT adaptor for
conduit connection optional)
Enclosure Rating: IP 54 (NEMA 3, 3S & 13) |
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| DIMENSIONS (MM) & ELECTRICAL |
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ORDERING INFORMATION
| FOR YOUR CONVENIENCE, THESE ITEMS ARE AVAILABLE ONLINE |
| Model |
Range |
Max. Pressure |
| 694.931115010 |
±0.2 inches w.c. |
20.0 inches w.c. |
| 694.911115010 |
0-0.4 inches w.c. |
20 inches w.c. |
| 694.912115010 |
0-1.20 inches w.c. |
20 inches w.c. |
| 694.913115010 |
0-2.0 inches w.c. |
40 inches w.c. |
| 694.914115010 |
0-4.0 inches w.c. |
40 inches w.c. |
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| Accessories & Options: |
| 104262: Plastic Static Pressure Probe (See Figure 1 Above) |
| 100064: Connection set including two static probes |
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| The Above Items Typically Ship From Stock |
Accessories & Options:
| PLEASE CALL 1-800-253-2497 TO ORDER THESE ITEMS |
| Model |
Range |
Max. Pressure |
| 694.931115010 |
±0.2 inches w.c. |
20.0 inches w.c. |
| 694.911115010 |
0-0.4 inches w.c. |
20 inches w.c. |
| 694.912115010 |
0-1.20 inches w.c. |
20 inches w.c. |
| 694.913115010 |
0-2.0 inches w.c. |
40 inches w.c. |
| 694.914115010 |
0-4.0 inches w.c. |
40 inches w.c. |
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| Accessories & Options: |
| 104262: Plastic Static Pressure Probe (See Figure 1 Above) |
| 100064: Connection set including two static probes |
| A0012: 1/2 ? NPT Adapter to replace strain relief connector with conduit |
| Higher Ranges: Consult Factory |
| Integral Digital Display: Consult Factory |
| Voltage Output: Consult Factory |
| Square Root Extraction: Consult Factory |
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| Bold Order Items Typically Ship From Stock |
Typically an OEM product; please call us to discuss your application. |
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ASK US ABOUT OUR....
WET TO WET
TRANSMITTERS & SWITCHES |
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| For assistance call 978-568-3400 |
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