METRAHIT PRO 4½ Place TRMS Technological Multimeter.
METRAHIT PRO 4½ place TRMS digital multimeter for industrial use, e.g. in chemical process engineering.
Additional “low-resistance” (1 MΩ) alternating voltage measurement
1 kHz / -3 dB low-pass filter can be activated.
Resolution: 12,000 digits – 16 multimeter functions.
Digital Hand-Held Multimeters with RMS Measurement VAC TRMS, VAC+DC TRMS, VDC, Hz (V), Hz (A), Ω, V , °C/°F (TC)

• Precision multimeter, resolution: 
  10 uV, 100 uA, 10 milli-Ohm

• TRMS measurement of V_AC and I_AC up to 1 kHz

• Voltage measurement:
  100 mV, 1/10/100/1000 V_DC/AC

• Current measurement  1/10 A direct.

• Resistance measurement: 
  100 Ohm, 1/10/100 kOhm, 1/10/40 MOhm

• Frequency measurement: 100 Hz, 1/10/100 kHz

• Capacitance measurement: 10/100 nF, 1/10/100/1000 uF

• Measured value storage and MIN-MAX recording

• Overload and blown fuse indication

• Temperature measurement K type probe.

• Automatic and manual measuring range
  selection 20 mm digital display with
  supplementary analog scale

• Certificate and 3 year guarantee

Three Connector Jacks with Automatic Blocking Sockets (ABS) *
All current ranges are implemented via a single connector jack which prevents any
possibility of operator error.
Beyond this, the automatic blocking sockets prevent incorrect connection of the
measurement cables, as well as selection of the wrong measured quantity.
Danger to the user, the instrument and the device under test resulting from operator
error is thus ruled out.

Overload Protection
The instrument is safeguarded for up to 1000 V in all measuring functions by overload protection. Voltages of greater than 1000 V and current of greater than 10 or 16 A are indicated acoustically.
Dangerous contact voltages are indicated when the 1 kHz low pass filter is activated.
The FUSE display appears at instrument in order to indicate that the fuse for the current
measuring input has blown.

Activatable Filter for V AC Measurement
A 1 kHz low-pass filter can be activated if required, for example when measuring motor
voltage at electronic frequency converters.
The input signal is checked by a voltage comparator for dangerous voltages as long as the
low-pass filter is activated.

Analog Scale for Quick Trend Display – Bar Graph or Pointer
The analog scale (with additional negative range for zero frequency quantities) allows for
faster recognition of measured value fluctuation than is possible with a digital display.
The instrument can be switched back and forth between bar graph and pointer display.

Automatic or Manual Measuring Range Selection
Measured quantities are selected by means of a rotary switch and a function key.
The measuring range is automatically matched to the measured values.
The measuring range can also be selected and fixed manually with a key.