Optical Science and Engineering
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Model 422: Pressure Transmitter for Overhead Junction Boxes
Viatran’s Model 422 pressure transmitter is compact yet offers a high performance punch. The electronics and silicon sensor design have an integrated precision of over ±0.08%.
The Model 422 features pressure ranges of 0–3 to 5000 psi and an output of 0–5 Vdc. It has been designed specifically for overhead junction boxes.
Features
|
Low-pressure applications |
 |
All stainless steel construction |
 |
High precision |
|
Shunt calibration circuit option |
The Model 422 pressure transmitter is a flexible high-performance test and control sensor that provides noise suppression, fast response timeand CE compliance. Viatran feels proud in providing outstanding customer support together with a technically excellent product. Variants of this model are used across the industrial and automotive industries.
Performance
Table 1. Source: Viatran
| . | . | . |
|---|---|---|
| Full Scale Pressure Range (FSPR) | 0-3 thru 0-5000 PSI (0-0.2 to 0-345 bar),0-15 PSIV (0-1.03 barV)* | |
| Zero balance | ≤±0.25% FSO | |
| Non-Linearity (Best Fit Straight Line) | ≤±0.06% FSO standard, optional ±0.04% | |
| Hysteresis & Repeatability | ≤±0.06% FSO standard | |
| Full Scale Output | 5 Vdc ≤±0.25% FSO | |
| Long Term Stability | ≤±0.3% FSO per 6 months | |
| Compensated Temperature* | 32°F to 180°F (0°C to 82°C) | |
| Operating Temperature Range | -40°F to 185°F (-40°C to 85°C) | |
| Storage Temperature | -40°F to 250°F (-40°C to 121°C) | |
| Maximum Fluid Temperature | 250°F (121°C) | |
| Combined Thermal Effect(zero & span) | ≤±2% FSO per 100°F typical | |
| * Modified specification for vacuum and compound ranges: | Compensated Temperature Range | 32°F to 170°F (0°C to 77°C) |
Electrical
Table 2. Source: Viatran
| . | . | . |
|---|---|---|
| Supply Voltage | 9 to 30 Vdc (12 to 30 Vdc for DM option) | |
| Power Supply Regulation | <±0.05% FSO per Volt Output Signal | |
| Output Signal | 0-5 Vdc | |
| Circuit Protection | Short circuit and reverse polarity protected | |
| Voltage Spike Protection | Withstand 1000 volt spike per EN6100-4-5 | |
| RFI/EMI Suppression | CE marked, EN 61326 | |
| Insulation Resistance | <5 nS conductance | |
| Response Time | <1.5 millisecond | |
| Electrical Connections | 6-pin bayonet (standard) | |
| Pin Outs | Pin A | +Power |
| Pin B | -Power | |
| Pin C | +Signal | |
| Pin D | -Signal | |
| Pin E | AC ground (standard) | |
| Pin F | No connection | |
| Connector Options | BP | Micro change (M12) |
| BN | 4-pin bayonet | |
| ZU | Cable gland |
Mechanical
Table 3. Source: Viatran
| . | . |
|---|---|
| Pressure Connection | 1/8" NPT female |
| Proof Pressure | 3x range or 1,200 PSI (whichever is less) for 0-3 thru 0-500 PSI3x range or 9,000 PSI (whichever is less) for 0-1,000 thru 5,000 PSI |
| Burst Pressure | 5x range or 2,400 PSI (whichever is less) for 0-3 thru 0-500 PSI5x range or 10,000 PSI (whichever is less) for 0-1,000 thru 0-5,000 PSI |
| Pressure Cavity Volume | 1.5 mL |
| Mounting | May be supported by process piping |
Materials of Construction
Table 4. Source: Viatran
| . | . |
|---|---|
| Wetted Parts | 316L stainless steel |
| Housing | 316 stainless steel |
| Weight | 4 oz nominal |
| Identification | Laser etched onto body |
Options
Table 5. Source: Viatran
| . | . |
|---|---|
| DA | Isolated internal shunt calibration(6-pin connector required) |
| DC | Extended Compensated Temperature Range (Cold)-40°F to 170°F (-40°C to 77°C) |
| DE | Internal shunt calibration (6-pin connector required) |
| DG | Improved temperature performance |
| DH | Special range |
| DM | Modified FSO >5 Vdc (Requires 12 to 30 Vdc Supply Voltage) |
| DN | Improved linearity ±0.04% FSO (not available with TU option) |
| DQ | Cleaning for oxygen service |
| DX | Modified FSO <5 Vdc |
| EA | Special calibration |
| EH | Extended Compensated Temperature Range (Hot)+70°F to 185°F (21°C to 85°C) |
| LV | Externally powered, optically isolated shunt calibration(6-pin connector required) |
| NH | Customer specified marking |
| TU | Compound special ranging |
| Alternate Pressure Ports | |
| VE | 1/4 AN bulkhead mount |
| VF | 1/4 tube Swagelok bulkhead |
| VG | M12 x 1.5 mm female |
| VH | M12 x 1.5 mm male |
| WQ | G 1/4 female |
| YA | MS33649-04 |
| YC | MS33656-04 |
| YH | 1/8" NPTM |
| YL | 1/8" NPTF (standard) |
| YJ | 1/4" NPTF |
| YK | 1/4" NPTM |
Image Credit: Viatran
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