Product Attribute:
Applicationt:
Dongfeng
Production Description:
Description
Model 742 Pressure Transducer (General Information): The 742 Pressure Transducer has been specially designed to meet the needs of military and/or marine applications and conforms to military specification MIL-T-24742 (SH). The 742 accurately measures pressure and transmits a fully adjustable 4 to 20 mA or 0-5 VDC output signal for remote display, recording, or control.
Model 742R Gage Pressure Version: The 742R is available in gauge, compound, vacuum and absolute ranges from 30Hg vacuum to 0-10,000 psi.
Model 742D Differential Pressure Version: The 742D is available in differential ranges from 10 inches of water to 600 psi.
Direct Replacement
The 742D transducer is directly interchangeable with existing pressure transducers designed to MIL-T-24742. The mounting is designed to match the footprint of existing transducers for quick and easy installation.
Minimal Maintenance
Calibration is quick and easy with the non-interacting zero and span adjustments.
Specifications
Functional Specifications
in accordance with MIL-T-24742 (SH)
Applications
steam, sea water, fl ue gas, ammonia, oxygen, other gases, fresh water, condensate, nitrogen, inert gases and liquid hydrocarbons
Output
4-20 mADC, 0-5 VDC
Power Supply
28 VDC ±4.5 VDC with reverse polarity protection
Loop Resistance
0 to 250 ohms
Zero/Span Adjustments
±5% full scale output
Temperature Limits
Compensated: 0°C to 65°C (32°F to 149°F)
Overpressure
200% of range or maximum rated line pressure (whichever is greater)
Humidity
0 to 100% RH
Volumetric Displacement
less than 0.002 cc
Weight
18 oz. (0.51 kg)
5.AMETEK pressure transmitter Model 831
The Model 831 transmitters are the most durable, accurate and cost effective fixed range pressure transmitter available. An all 316 stainless steel transmitter, it is designed for years of stable performance in even the toughest environmental and corrosive media conditions. With its all-welded construction, this transmitter is weatherproof and capable of a direct spray with forces up to 200 psi without internal leakage. The Model 831 (standard and low power) has FM and CSA explosion-proof ratings. The 831D (differential pressure) also carries the CSA explosion-proof rating. All Model 831s meet NACE standards for offshore applications. A one year warranty is standard with every unit.
The small size and light weight of the Model 831 transmitter eliminates the need for complicated mounting hardware and mechanical supports, thereby substantially reducing installation time. The in-line connection permits simple field wiring without the need for additional hardware, adding to the speed and ease of installation.
The standard Model 831 and the Model 831D feature a 4 to 20 mA output standard with a 12 to 30 VDC power supply. The Model 831 Low Power provides a three wire 1-5 or 0.8-3.2 voltage output and requires less than 30 millwatts of total power to operate. The combination of low power requirement, small size, excellent performance and low price make the Model 831 Low Power Transmitter ideal for critical outdoor applications. This model requires 6 or 8-14 VDC excitation and is available in pressure ranges from 15 to 5000 psi.
Overall Features
Available in Differential Pressure, Low Power or Standard version
All welded 316