Omega Products HHM-EX540 User Manual
Multimeter/Data Logger
With Wireless PC Interface
HHM-EX540
Optional
U True RMS Measurements for Accurate
AC Voltage and Current Measurements
U AC/DC Voltage and Current, Resistance,
Capacitance, Frequency (Electrical/
Electronic), Temperature, Duty Cycle,
Diode/Continuity
U Double Molded for Waterproof (IP67)
Protection, Cat IV-600V Safety Rating
for Industrial Applications
U Data Acquisition Mode for Real-Time
Data Transmission Directly to Your PC
U 1000V Input Protection on All Functions
U Dual Sensitivity Frequency Functions
U Large Triple LCD
U Complete with Double Molded Test
Leads, Magnetic Hanging Strap, Type K
Probe, Remote Receiver with USB
Cable, PC Software, Carrying Case, and
9V Battery
U Wireless Frequency (914 MHz) is
Suitable for Use in US, Canada, Mexico,
and Select Other Countries
The OMEGA® HHM-EX540 Series is a versatile
wireless data logger/multimeter. In addition, it offers
a diode test, large backlit LCD, auto power-off with
disable feature and CAT IV-600V safety rating for
industrial applications. The unit is able to data log up to
9999 readings and with the wireless USB interface has
the capability to transmit readings to your PC real-time.
Specifications
Basic Accuracy: 0.06%
DC/AC Voltage: 0.01mV to 1000 Vdc; 0.01mV to 1000 Vac
DC/AC Current: 0.01μA to 20A
Resistance: 0.01Ω to 40M Ω
Capacitance: 0.001nF to 40 μF
Frequency (Electrical): 40 Hz to 4 kHz
Frequency (Electronic): 0.001 Hz to 100 MHz
Temperature: -45 to 750°C (-50 to 1382°F)
Duty Cycle: 0.1 to 99.90%
Diode Test: Test current of 0.9 mA maximum, open circuit
voltage 2.8 Vdc typical
Storage Capacity: 9999 records
RF Transmit Distance: 10 m (32.8') (approx)
Transmitter Frequency: 915 MHz
HHM-EX540 shown actual size.
Continuity Check: Audible signal will sound if the resistance
is less than 35Ω (approx.), test current <0.35 mA
Peak Captures: Peaks >1ms
Temperature Sensor: Requires Type K thermocouple
Input Impedance: >10M Ω Vdc and >9M Ω Vac
AC Response: True RMS
ACV Bandwidth: 50 to 1000 Hz
Crest Factor: ≤3 at full scale up to 500V, decreasing linearly
to ≤1.5 at 1000V
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A
B
C
A. Continuous wireless data transmission from meter to your PC in real time.
B. Waterproof IP67 for the most extreme operating conditions.
C. Drop-proof to 1.8 m (6'), built tough with double molded housing.
Display: 40,000 count, backlit, liquid crystal with bargraph
Overrange Indication: “OL” is displayed
Auto Power Off: 15 minutes (approximately) with disable
feature
Polarity: Automatic (no indication for positive); minus (-) sign
for negative
Measurement Rate: 2 times per second, nominal
Low Battery Indication: Displayed if battery voltage drops
below operating voltage
Battery: One 9V (NEDA 1604) battery (Included)
Fuses: mA, μA ranges; 0.5A/1000V ceramic fast blow A
range; 10A/1000V ceramic fast blow
Operating Temperature: 5 to 40ºC (41 to 104ºF)
Storage Temperature: -20 to 60°C (-4 to 140°F)
Operating Humidity: Max 80% up to 31ºC (87ºF)
decreasing linearly to 50% at 40ºC (104ºF)
Storage Humidity: <80%
Operating Altitude: 2000 m (7000') maximum
Weight: 349 g (12.3 oz) (includes holster)
Dimensions: 187 x 81 x 50 mm (7.36 x 3.2 x 2.0")
(includes holster)
Safety: This meter is intended for origin of installation use
and protected, against the users, by double insulation per
EN61010-1 and IEC61010-1 2nd Edition (2001) to category
IV 600V and category III 1000V; pollution degree 2
Enclosure: Double molded, waterproof (IP67)
Shock (Drop Test): 2 m (6.5')
To Order Visit omega.com/hhm-ex540 for Pricing and Details
Model No. Description
HHM-EX540 Multimeter/data logger with wireless PC interface (915 MHz)
HHM-EX542 Multimeter/data logger with wireless PC interface (433 MHz)
CAL-3-HHM NIST-traceable calibration
Comes complete with double molded test leads, magnetic hanging strap, Type K bead wire temperature probe, remote receiver with USB cable,
Windows® compatible software, 9V battery, hard carrying case, operator’s manual.
Ordering Example: HHM-EX540, multimeter/data logger with wireless PC Iinterface (915 MHz).
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