Model 748 Pressure Transmitter
748 has hazardous location approvals, optional zero and span adjustment and can measure pressures as low as 1.5 psi. Compound ranging, negative outputs, a variety of pressure and electrical connections are examples of options that are available to customize the 748 to your exact requirements
PERFORMANCE
| Full Scale Pressure Ranges | 0-3 thru 0-5000 PSIG, PSIS 0-15 thru 0-5000 PSIA .0-15 PSIV |
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| Linearity (Best Fit Straight Line) | ≤ ±0.25% "DN" Option- Improved Linearity ≤ ±0.1% |
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| Hysteresis | ± 0.05% FSO | |
| Repeatability | ± 0.05% FSO | |
| Full Scale Output (FSO) | 16 mA ±1% | |
| Zero Balance | ≤ ±1% FSO | |
| LongTerm Stability | ≤±0.25% FSO per 6 months | |
| Response Time | ≤ 1 mSec to reach 90% FSO | |
| Temperature Effect on Zero | ≤±1% FSO per 100°F (37°C) | |
| Temperature Effect on Span | ≤±1% FSO per 100°F (37°C) | |
| Compensated Temperature | 32°F to 180°F (0°C to 82°C) | |
| Operating Temperature | -40°F to 185°F (-40°C to 85°C) | |
| Storage Temperature Limit | -40°F to 250°F (-40°C to 121°C) | |
| * For PSIV and Compound Range units: | Temperature Effect on Zero ≤±3.0% per 100°F Compensated Temperature Range 32°F to 170°F (0°C to 77°C |
ELECTRICAL
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Supply Voltage:
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9.0 to 30 Vdc
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Power Supply Regulation Effect
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≤±0.05% FSO per Volt
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Output Signal
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4 - 20 mA
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| Load Resistance | 12 Vdc min with 150 ohm and 30 Vdc max with 1050 ohms | |
| Circuit Protection | Output may be short-circuited indefinitely. Input polarity may be reversed. Over voltage protected to 1000 volts. <1 msec duration. | |
| Insulation Resistance | <5nS Conductance | |
| Electrical Connection |
1/2" NPT (M), 18 AWG wire, 72" long |
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| Wire Color Codes |
Red +Power/Signal Black -Power/Signal Green Case ground White No Connection Brown No Connection |
MATERIALS OF CONSTRUCTION
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Enclosure Housing
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304 and 316 stainless steel
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Wetted Parts
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316 Stainless Steel
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Weight
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10 oz.
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MECHANICAL
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Pressure Connection:
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1/4" - 18 NPT Female 1/4" - 18 NPT Female (0-3.3 thru 0-1034 bar
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Proof Pressure:
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<=500 PSI lesser of 3x or 1200 PSI
>=500 PSI lesser of 5x or 10K PS |
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Burst Pressure:
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<=500 PSI lesser of 5x or 2400 PSI
>=500 PSI lesser of 5x or 10K PS |
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| Mounting | May be supported by pressure connection | |
| Identification | Laser etched onto body |
