Gossen Metrawatt METRAHIT CAL Calibrator, M244A Data Sheet

Product codes
M244A
Page of 4
METRAHIT
C
AL
Calibrator
3-349-440-03
2/7.08
GMC-I Gossen-Metrawatt GmbH 
DQS Certified per
DIN EN ISO 9001 reg. no. 1262
Quality Management System
Calibration certificate included
System Components and Range of Applications
The METRAHIT CAL calibrator functions as a highly accurate 
calibration and simulation instrument for electrical quantities. As a 
handheld instrument, it’s suitable for precise, on-site calibration 
and inspection tasks, as well as for test department and 
laboratory work.
Thanks to its diverse functions, the highly flexible instrument can 
be used in process engineering, control room and equipment 
fabrication, general measuring technology and many other 
applications. As a system component it can always be used in 
calibration systems for calibrating measuring transducers, buffer 
amplifiers, transmitters, temperature measuring and recording 
instruments, controllers, signaling devices and indicators.
If a USB X-
TRA
 interface adapter is plugged on to the instrument 
(accessory, see page 4), complete calibration procedures and 
measuring-point oriented calibration cycles can be transferred 
from a PC, saved to memory and accessed by simply pressing a 
key. The calibrator setup procedure can thus be significantly 
shortened, and erroneous settings can be avoided.
Optional METRAwin90-2 software simplifies programming, 
controls data transfer to the calibrator, receives the measurement 
data of any interconnected multimeter from a transducer output 
and executes a comparison of the targeted and the actual 
situation. Acquired values can be printed out as a calibration 
report by the PC.
Universal Calibration Standard
Integrated electronics generate mV, V and mA signals. Beyond 
this, they’re capable of simulating thermo-voltages for various 
types of thermocouples for predefined temperatures (
°C or °F), as 
well as resistance values for various Pt and Ni temperature 
sensors.
Frequency and Pulse Run Generator
Continuous frequency signals can be transmitted by the 
METRAHIT CAL for testing SPCs, energy metering devices, flow 
rates and more. Amplitude is adjustable for the generated 
square-wave pulses, which are used to simulate sensor pulses. 
Predefined pulse runs are also transmitted at a given frequency.
Calibration and Simulation
Measuring transducers with a wide variety of input signals 
(voltage, thermo-voltage, RTD and 2-wire resistance sensors etc.) 
can be directly connected and calibrated. If a multimeter is used 
(e.g. METRAHIT
X-
TRA
), the respective values can be measured at 
the measuring transducer’s output, transmitted to a PC via an 
adapter if desired, displayed with the help of optional 
METRAwin90-2 software and compared with the appropriate 
calibration specifications. Setpoint values and actual values are 
displayed, or printed as a certificate. When operated in the “mA 
sink” mode, the METRAHIT CAL simulates a 2-wire transmitter and 
retrieves the selected current value from the measuring sequence. 
Universal calibrator, simulator 
mA / mV 
… V / °C/°F (Pt100/1000, Ni100/1000, 
thermocouples: J, L, T, U, K, E, S, R, B, N) / 5 
… 2000 Ω
Frequency and pulse run generator: 1 Hz 
… 1000 Hz
Ramp and staircase functions
Easy operation
Interface and optional METRAwin90-2 calibration software 
Transmitter simulator (sink: 0 
… 24 mA)
DKD calibration certificate included as standard feature
Rugged, EMC compliant design