Gossen Metrawatt METRAHIT CAL Calibrator, M244A Benutzerhandbuch
Produktcode
M244A
10
GMC-I Gossen-Metrawatt GmbH
5
Resistance Simulation [
Ω]
The resistance simulator is capable of simulating resistors using
2-wire connection for the following range: 5
2-wire connection for the following range: 5
… 2000 Ω.
➭ Connect the device to be calibrated with the measurement
cable as shown.
➭ Select the Ω calibration function with the rotary switch.
➭ Switch the calibrator on by pressing the ON / OFF | LIGHT
➭ Switch the calibrator on by pressing the ON / OFF | LIGHT
key.
➭ Set the resistance simulation value:
ON indicates: The output is active!
Select the digit to be changed with the
Select the digit to be changed with the
Y Z
keys, and change
the respectively selected digit with the
VU
keys.
➭ The output can be deactivated with the OUT | ENTER key
[
out
.
off
], or activated once again.
Switching Between the Fixed Value, Interval and Ramp Functions
➭ Press the SELECT | ESC key in order to switch to the
➭ Press the SELECT | ESC key in order to switch to the
[
select
range
] menu.
➭ Switch to the interval or ramp function menu with the Y Z
keys. Start the respective function with OUT | ENTER.
Abbreviated Instructions
Select the calibration function.
Change the fixed value.
0000.0
0000.0
Ω Y Z UV
Note!
The following error messages are possible:
“
“
HiCurr” (high current – current value to high) where
I > 4.5 mA and
“
“
LoCurr” (low current – current too low or reversed polarity)
where I < 40
μA (corresponds to unconnected sockets)
Attention!
!
No interference voltage may be applied to the calibrator
jacks in this operating mode.
The calibrator is protected against brief application of a
large interference voltage with a replaceable fuse in the
event of operator error (see section 13.3).
jacks in this operating mode.
The calibrator is protected against brief application of a
large interference voltage with a replaceable fuse in the
event of operator error (see section 13.3).
Response time of the calibrator output to the specified resistance
value after measuring current is applied is max. 30 ms. Devices
under test with non-continuous measuring current (e.g. scanned
measuring inputs) result in erroneous measured values if
measurement is started before response time has elapsed. The
calibrator cannot be used for devices of this type.
value after measuring current is applied is max. 30 ms. Devices
under test with non-continuous measuring current (e.g. scanned
measuring inputs) result in erroneous measured values if
measurement is started before response time has elapsed. The
calibrator cannot be used for devices of this type.
Output
CALIBRATOR
+
–
2-Wire Resistance Simulation
Device to be Calibrated
–
+
Input
Measuring Current: 50
μA to 5 mA
Ω
ON/OFF
LIGHT