Gems Sensors Pressure Transmitter Transducer
Quick Specs...
- For Clean-In-Place (CIP) and Sterilize-In-Place (SIP)
- 0.20% Full Scale Accuracy
- No Liquid Fill Diaphragms
Overview / Design Principle:
The 890 Series meets 3A sanitary design standards and is fully sealed to withstand external high pressure washdowns. These units are packaged in rugged welded stainless steel housings and are exceptionally insensitive to vibration, shock and environmental extremes. A small size and tri-clover sanitary pressure fitting allow direct mounting in most CIP and SIP installations. Other features include IC-based circuitry, a 1/2 ” NPT conduit fitting and shielded cable with vent tube. Sealed screws provide access to zero and span adjustments.
How They Operate:
A stainless steel diaphragm and an insulated electrode form a variable capacitor. Pressure on the diaphragm alters the sensor's capacitance, which is then detected and converted to a highly accurate linear 4-20 mA signal by electronic circuitry featuring Gems Sensors & Controls' patented charge-balance principle. Low hysteresis, very stable operation and negligible clamping effect are inherent.
Applications:
- Food Processing
- Dairy & Beverage Processing
- Pharmaceutical Processing
- Sanitary Pipelines
| Specifications |
| Input |
|
Pressure Range
|
1-1,000 psig
|
|
Proof Pressure
|
See ordering chart
|
|
Burst Pressure
|
See ordering chart
|
|
Fatigue Life
|
>1 million cycles
|
| Performance |
|
Output
|
4-20 mA (2 Wire)
|
|
Supply Voltage (Vs)
|
18-38 Vdc
|
|
Accuracy
|
0.20% FS
|
|
Thermal Error Zero
|
0.02% FS/°F (±0.036% FS/°C)
|
|
Thermal Error Span
|
0.02% FS/°F (±0.036% FS/°C)
|
|
Compensated Temperature
|
20°F to +180°F (-7°C to +80°C)
|
|
Operating Temperatures
|
-40°F to +260°F (-40°C to +125°C)
|
|
Storage Temperatures
|
-65°F to +260°F (-54°C to +125°C)
|
|
Zero Tolerance
|
1% of span (±0.5 mA adjustable)
|
|
Span Tolerance
|
1% of span (±0.5 mA adjustable)
|
|
Max. Loop Resistance
|
(Vs-18) x 50
|
|
Response Time
|
10 ms
|
|
Mounting Effects
|
.15% FS (.25% FS for 1.5" Tri-Clover)
|
| Mechanical Configuration |
|
Pressure Port
|
1.5" or 2" Tri-Clover Sanitary Fitting
|
|
Wetted Parts
|
316 Stainless Steel
|
|
Electrical Connection
|
1/2" NPT Conduit Fitting and Strain Relief with 15 ft Cable
|
|
Enclosure
|
Stainless Steel
|
|
Vibration
|
10g Peak Sinusoidal, 50 to 1000 Hz
|
|
Acceleration
|
10g
|
|
Shock
|
50g
|
|
Approvals
|
Meets 3-A Sanitary Standards
|
|
Weight
|
8 oz
|
Dimensions:
 |
| |
in/mm |
| A |
2.00/50.8 DIA. |
| B |
0.525/13.34 |
| C |
0.588/14.93 |
| D |
1.155/19.34 |
| E |
2.565/65.15 |
| F |
1.984/50.39 |
|
|
 |
| |
in/mm |
| A |
2.00/50.8 DIA. |
| B |
0.204/5.18 |
| C |
.112/2.84 |
| D |
0.588/14.93 |
| E |
1.155/19.34 |
| F |
2.272/57.70 |
| G |
2.516/63.91 |
|
|