Instructions
Table Of Contents
- 1 Safety Features and Precautions
- 2 Operating Overview – Connections, Keys, Rotary Switch, Symbols
- 3 Initial Start-Up
- 4 Control Functions
- 5 Measurements
- 5.1 Voltage Measurement
- 5.1.1 Direct and Pulsating Voltage Measurement, V DC and V (DC+AC)
- 5.1.2 Alternating Voltage Measurement with 1 MW Load Resistance and Frequency Measurement with Selectable Low-Pass Filter (METRA HIT Extra, METRA HIT Etech and METRA HIT Especial only)
- 5.1.3 Alternating Voltage and Frequency Measurement V AC and Hz with Selectable Low-Pass Filter (METRA HIT Extra, METRA HIT Etech and METRA HIT Especial only)
- 5.1.4 Frequency and Duty Cycle Measurements (METRA HIT Extra only)
- 5.2 Resistance Measurement, W
- 5.3 Continuity Test
- 5.4 Diode Testing with a Constant Current of 1 mA
- 5.5 Temperature Measurement
- 5.6 Capacitance Measurement (METRA HIT Extra and METRA HIT Etech only)
- 5.7 Current Measurement
- 5.7.1 Direct and Pulsating Current Measurement, Direct Connection, A DC and A (DC+AC) (METRA HIT Extra, METRA HIT Etech and METRA HIT Especial only)
- 5.7.2 Alternating Current and Frequency Measurement, Direct Connection, A AC and Hz (METRA HIT Extra, METRA HIT Etech and METRA HIT Especial only)
- 5.7.3 Direct and Pulsating Current Measurement with Current Clamp Sensors, A DC and A (DC+AC)
- 5.7.4 Alternating Current Measurement with Current Clamp Sensors, A AC and Hz
- 5.7.5 Direct, Pulsating and Current Measurement with Current Clamps Transformer A DC, A (DC+AC), A AC and Hz (METRA HIT Extra, METRA HIT Etech and METRA HIT Especial only)
- 5.1 Voltage Measurement
- 6 Device and Measuring Parameters
- 7 Interface Operation
- 8 Technical Data
- 9 Maintenance and Calibration
- 10 Accessories
- 11 Index
GMC-I Messtechnik GmbH 37
V/Hz, , Temperature, and A/Hz Measurements
5.5 Temperature Measurement
Temperature measurement is performed with a type K
thermocouple (accessory), which is connected to the voltage in-
put. Alternatively, a Pt100 or Pt1000 resistance
sensor can be used with the METRAHIT EXTRA and
METRAHIT E
TECH.
Selecting the Unit of Measure for Temperature
1nFo
... tEMP °C / °F
(°C = default setting)
5.5.1 Measurement with Thermocouples, Temp TC
➭ Set the rotary switch to “Temp
TC
”.
Note
METRAHIT EXTRA and METRAHIT ETECH only:
The last selected temperature measurement or the last
selected temperature sensor, i.e. type K or Pt100/Pt1000,
remains in memory and is accordingly displayed. Press the
FUNC | ENTER key in order to change to the other measuring
function if required.
➭ The reference temperature is measured at the internal
reference junction (see parameter “1tEMP ” in chapter 6.3
regarding querying).
Note
The internal reference temperature (temperature of the inter-
nal reference junction) is measured by a temperature sensor
inside of the instrument. This may deviate from room tem-
perature as a result of internal heat-up, or moving from
warmer to colder surroundings or vice versa.
➭ Connect the sensor to the two accessible jacks. The instru-
ment displays the measured temperature using the selected
unit of measure.
MEASURE
SETUP
FUNC
ENTER
FUNC
ENTER
Temp
TC
0023.3
Temp
RTD
Type K
TC
COM
V
Temp
TC
0256.0
Pt1000
RTD
Measuring Range
TC K (NiCr-
Ni)
–250.0 +1372.0C
FUNC
ENTER