Marsh Bellofram - Marsh Division - Digital Pressure Indicators

Product catalog summary

Overview: The Marsh Instruments Digital Pressure Indicator is a portable, lightweight device designed for testing and calibrating pressure systems. It converts pressure input into a digital readout on an LCD display, offering high accuracy in a compact form.

Key Features:

Converts pressure input to a digital readout with high accuracy (±0.50% of reading ±1 count).
Utilizes a semiconductor-type pressure transducer for conversion to analog voltage.
Powered by an internal 9-volt rechargeable battery with a zero adjust potentiometer for accuracy.
Ideal for calibrating differential pressure cells, I/Ps, and P/Is, testing instruments, verifying valve and switch operations, and detecting system leaks.

Specifications:

Pneumatic Range: -14.7 to 200 psig, with corresponding inches of water column and mercury.
Wetted Material: Brass fitting and silicone wafer diaphragm, suitable for clean, non-conductive fluids.
Pressure Fitting: 5⁄16" quick-connect tube fitting with a nickel-plated brass locking connector and an 8" plastic hose.
Display: 3½ digit LCD with ½" high black numerals, polarity, and low battery indicators.
Accuracy: ±0.5% of reading ±1 count, requires zeroing at barometric pressure.
Temperature: Calibration range of 50°-90°F, operating range of 30°-130°F, with a temperature effect of ±0.01% per degree F outside the calibration range.
Power: Internal 9-volt Ni-Cad rechargeable battery, with an external 12-volt adapter for charging.
Case Size: 3.60" wide x 5¾" long x 1.92" high, made of ABS plastic.

Included Accessories: Carrying case, battery charger, 8" plastic hose, quick-connect fitting, and a technical manual.

Catalog excerpts

Marsh Bellofram - Marsh Division - Digital Pressure Indicators-1

63 Pressure Indicator DIGITAL PRESSURE INDICATOR • Converts Pressure Input to LCD Digital Readout • High Accuracy in Lightweight, Portable Package • State of the Art Semi-Conductor The Marsh Instruments Digital Pressure Indicator is portable, lightweight, hand-held testing and calibrating instrument indicates pressure to 50 psig at accuracy levels of ±0.50% of reading ±1 count. A state-of-the-art semiconductor-type pressure transducer converts pressure input to analog voltage, which is displayed on a 312 digit LCD readout. Internal 9-volt rechargeable battery powers the indicator, and a zero adjust potentiometer standardizes the transducer bridge at zero pressure for higher accuracy. Marsh Instruments Handheld Digital Pressure Indicator and Calibrator is ideal for calibrating DP cells, I/P’s and P/I’s. The indicator tests installed instruments and transmitters, verifies operation and settings of valves and switches, detects system leaks, and is used for other testing or maintenance applications. DIGITAL PRESSURE INDICATOR RANGE PART NUMBER -14.7 to 50p 4-DPP-20050-BBC -14.7 to 60p 4-DPP-20060-B3 -14.7 to 200p 4-DPP-20200-BBC NOTE: Connection: 516" quick connect tube fitting Elec. Range: 0-200 MA SPECIFICATIONS PNEUMATIC RANGE Range:–14.7 to 200 psig; with corresponding inches of water column and inches of mercury WETTED MATERIAL Brass fitting, silicone wafer diaphragm, suitable for instrument air (clean & dry) or any clean, nonconductive fluid PRESSURE FITTING 516" quick-connect tube fitting standard, with mating nickel-plated brass locking quick-connector. 8" plastic hose with ferruleless 14" OD has to coupling insert with shutoff valve DISPLAY 312" digit LCD, 12" high black numerals on light background, with polarity and low battery indicators ACCURACY ±0.5% of reading ±1 count, must be zeroed at barometric pressure TEMPERATURE Calibration range: 50°-90°F. Operating range: 30°-130°F. Effect of temperature outside calibration range is ±0.01% per degree F POWER Internal: 9-volt transistor battery, Ni-Cad chargeable. External: 12- volt adapter will power unit or charge battery in approx. 14 hours. Approximate operation is 8-10 hours per charge CASE SIZE 3.60" wide x 534" long x 1.92"high, ABS plastic INCLUDES Carrying case, battery charger, 8" plastic hose, quick-connect fitting, and technical manual

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