DPM4 Parameter Tester is a highly accurate meter for testing a wide range of medical devices. Key features include its lightweight, compact size and battery operation.

The DPM4 is available in four models: 1H, 1G, 2H, and 2G.  Basic parameters cover pressure, vacuum, and temperature measurements (Models 1H and 1G). Gas flow, barometric pressure and humidity measurements are included in the enhanced Tester (Models 2H and 2G). The Tester is menu-driven and simple to operate. All functions are set from a 128 x 32 pixel graphical display

DPM4 is ideal for the testing done as part of preventive maintenance or repair processes whenever measurement of pressure, flow, or relative humidity is required.
 

Features » Palm size » High accuracy » Differential pressure, vacuum, and temperature measurements » Multiple user-selectable units of measurement » Simultaneous display of multiple parameter measurements » Leak detection/leak-rate calculation » RS232 for computer control » Pressure measurements from -700 mmHg to +5000 mmHg range (applies to the 1G and 2G models only) » Barometric-pressure, flow, and humidity measurements (applies to the 2G and 2H models only)

Models   » The DPM4 is available in four models: 1H, 1G, 2H, and 2G

Specifications Pressure Measurement DPM4 Model 1H or 2H Operating range: -350 mmHg to 350 mmHg Accuracy: ± 0.3 % of range Resolution: 0.1 mmHg Units of measure: mmHg, mBar, cmH2O, PSI, InHg, InH2O, kgcm2 and kPa DPM4 Model 1G or 2G Operating range: -700 mmHg to 5000 mmHg Accuracy: 0.3 % of range for temperatures from 21 ºC to 25 °C and relative humidity from 30 % to 70 %; 0.3 % of range plus 0.02 % of range per degree C for temperature < 21 °C or > 25 °C with relative humidity from 30 % to 70 % Resolution: 0.5 mmHg Units of measure: mmHg, mBar, cmH2O, PSI, InHg, InH2O, kgcm2 and kPa Temperature Measurement All Models (DPM4-1H, 1G, 2H, 2G) Operating range: -40 ºC to 200 ºC Accuracy: ± (2 % of reading, 0.5 ºC) Resolution: 0.1 °C and °F Units of measure: °C and °F   Use standard external temperature probe type PT-100 or PT-1000 (DIN/IEC 751 Class A) for temperature measurements in °C or °F Temperature Probe Specification PT-100 Operating range: -50 ºC to +200 ºC Accuracy: ± 0.23 ºF @ 212 ºF (0.13 ºC @ 100 ºC) ± 0.18 ºF @ 32 ºF (0.1 ºC @ 0 ºC) ± 0.36 ºF @ 212 ºF (0.2 ºC @ 100 ºC) PT-1000 Operating range: -50 ºC to +200 ºC Accuracy: 0.3 ºC (0.5 ºF) Barometric Pressure DPM4 Model 2G or 2H   It is possible to compensate for the sea level and calibrate for offsets. Operating range: 380 mmHg to 900 mmHg Accuracy: 2 % of reading ±1LSD Resolution: 0.1 mmHg Units of measure: mmHg, mBar, inHg and hPa Gas Flow DPM4 Model 2G or 2H   Measures with an embedded sensor with 11 calibration points to compensate nonlinearity. Calibration constants stored in firmware. Operating range: -750 to 750 ml/min Accuracy: 1% of range or 5% of reading, whichever is greatest Resolution: 0.1 ml/min Compatibility: Gas: Air, N2, O2, CO2, H2 and He Units of measure: ml/min (or SCCM - Standard Cubic Centimeters per Minute) Relative Humidity DPM4 Model 2G or 2H   An integrated sensor in the instrument determines relative humidity measurements. Operating range: 12 % to 95 % RH Accuracy: 3.5 % of reading ± 2 % RH @ 25 ºC for RH between 12 % and 95 % RH Resolution: 0.1% RH Gas compatibility: Air Units of measure: % RH General Information   Temperature Requirements: 15°C to 35°C when operating 0°C to 50°C in storage Display/Control: LCD graphic display, 128 x 32 pixel Data Input/Outputs (1): Bi-directional RS-232C for Computer control Power: 9 Volt Alkaline Battery RG9 or Battery eliminator Case: ABS plastic case Weight: 0.4 kg / 0.9 lbs. with battery Dimensions: D x W x H:   34 mm x 94 mm x 156 mm   1.3 in x 3.7 in x 6.1 in

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