Gems Sensors Pressure Transmitter Transducer
Industrial Pressure Transducer
Quick Specs...
- 0-2 to 0-10,000 psi Pressure Ranges
- Voltage or Current Output
- NEMA 4/IP65 with Zero and Span Adjustments
Overview / Design Principle:
The 856 series pressure transducer is specifically designed for NEMA 4/IP65 service and features a die-cast aluminum enclosure. Their robust capacitive design is resistant to environmental effects, such as shock, vibration, temperature and EMI/RFI. A 17-4 PH stainless steel sensing element does not require isolation from a corrosive media. A ½" threaded conduit is provided for electrical termination and a removable cover provides easy access to the internal wiring terminal strip.
How they Operate:
Gems Sensors & Controls' patented variable capacitance sensor features an insulated electrode plate fastened to the center of the sensor diaphragm, which forms a variable capacitor. As pressure increases or decreases, the capacitance changes. This change in capacitance is detected and converted to a linear analog signal by Gems’ custom ASIC--based circuit, producing an output signal proportional to applied pressure.
Applications:
| Specifications |
| Input |
|
Pressure Range
|
0-10,000 psig (0-700 bar)
|
|
Proof Pressure
|
See ordering chart
|
|
Burst Pressure
|
See ordering chart
|
|
Fatigue Life
|
>1 million cycles
|
| Performance |
|
Supply Voltage (Vs)
|
9-30 Vdc
|
|
Long Term Drift
|
0.5% FS/year
|
|
Accuracy <25 psi
|
±0.25% FS
|
|
Accuracy >=25 psi< /P>
|
±0.13% FS
|
|
Thermal Error Zero <25 psi
|
±0.02% FS/°F (±0.036% FS/°C)
|
|
Thermal Error Zero >=25 psi< /P>
|
±0.01% FS/°F (±0.018% FS/°C)
|
|
Thermal Error Span
|
±0.015% FS/°F (±0.027% FS/°C)
|
|
Compensated Temperature
|
-4°F to +176°F (-20°C to +80°C)
|
|
Operating Temperatures
|
-40°F to +260°F (-40°C to +125°C)
|
|
Storage Temperatures
|
-40°F to +260°F (-40°C to +125°C)
|
|
Zero Tolerance
|
.5% of span (adjustable)
|
|
Span Tolerance
|
1% of span (adjustable)
|
| Mechanical Configuration |
|
Pressure Port
|
See ordering chart
|
|
Wetted Parts
|
17-4 PH Stainless Steel
|
|
Electrical Connection
|
Two 1/2" Internal Threaded Ports, Screw Terminal Strip
|
|
Enclosure
|
Die-Cast Aluminum, NEMA 4/IP65
|
|
Vibration
|
20g (MIL STD 202, Method 204, Condition C)
|
|
Shock
|
200g (MIL STD 202, Method 213B, Condition C)
|
|
Approvals
|
CE
|
|
Weight
|
13.4 oz
|
| Voltage Output Units |
|
Output
|
0.1-5.1 Vdc (3 wire)
|
|
Current Consumption
|
6 mA
|
|
Min. Load Resistance
|
5000 ohms
|
| Current Output Units |
|
Output
|
4-20 mA (2 wire)
|
|
Max. Loop Resistance
|
(Vs-9) x 50 ohms
|
 |
| |
in/mm |
| A |
4.02/102 |
| B |
2.50/64 DIA. |
|
|
|
|
 |
| |
in/mm |
| A |
0.38/9 |
| B |
2.54/65 |
| C |
1.46/37 |
| D |
3.56/90 |
| E |
1/4"NPT |
|
|