The Series
HM28 Digital Hand-Held Manometer is a precision
instrument designed to measure a wide range of pressures
to a very high accuracy. The unit incorporates a variety
of features in an easy to use format that makes it useful
in a wide variety of applications. Features include: measurement
in all common pressure ranges, display resolution to 0.001,
differential or relative measurement, two line liquid crystal
display, and adjustable auto power off to conserve battery.
We are so proud of the accuracy of the HM28
that we provide a certificate of calibration with the unit
at no additional cost. Depending on your application, the
HM28 can be used as a secondary calibration standard for
your other pressure instrumentation.
SPECIFICATIONS
Pressure Connection: Hose; 4/6 mm or 1/8" NPT.
Accuracy (includes linearity, hysteresis, and repeatability):
per order code.
±0.20% full scale ±1 digit
±0.10% full scale ±1 digit
±0.05% full scale ±1 digit
Measuring Media: Instrument Air or Inert Gases. For
HM28G3XXXXX, Any material compatible with 18/8 stainless
steel.
Temperature Limits: 23 to 122°F (-5 to 50°C).
Storage Temperature: -4 to 140°F (-20 to 60°C).
Humidity: 30 to 95% rH, non-condensing.
Display: 2 line, 16 character, dot matrix LCD, with
switchable display sizes.
Battery: 9V alkaline (included). Can operate from
external power supply of 7 to 14 VDC.
Current Consumption: <9 mA.
Memory: 964 measured values. Recording intervals
adjustable from manual, 1, 5, 10, 20, 30 seconds, 1, 2,
3, 5, 10, 30, 60 minutes.
Case Protection: IP54.
Case Dimensions: 6 x 3.27 x 1.34 in (152 x 83 x 34
mm).
Weight: 9.5 oz (270 g).
Maximum Measurement Rates: Stand alone: 2-1/2 readings/sec
(0.1% and 0.05% ratings), 5 readings/sec (0.2% rating).
Output to RS-232: 20 measurements/sec (0.2% rating). 10
measurements/sec (0.1% and 0.05% ratings).
RS-232 Baud Rate: Adjustable, 1200, 2400, 4800, or
9600 baud.
FEATURES
- Microprocessor based
- Differential, Gage, or Absolute
- High Accuracy, 0.2%, 0.1%, or 0.05% with Calibration
Certificate
- Selectable Scales
- Resolution to 0.000 of Selected Unit
- Peak and Valley Indication
- Hold Function
- Programmable Display
- Memory for up to 964 Readings
- Output for Optional Printer or Computer Interface
ACCESSORIES
-- See "Ordering" Page
HM28-0 1/8" NPT Adaptor
2 pieces.
HM28-1 Communication Software & Cable.
HM28-2 Universal Power Adaptor.
