Process calibrator simulated transmitter and VFC True RMS Multimeter 2in1
VC78+
An
industrial-grade on-site process maintenance tool that combines a digital
multimeter and a process signal source into one.
The
design of a two-color plastic mold shell and compliance with the IP65 dustproof
and waterproof rating allow it to be used in harsh environments.
Basic
Features of Input Measurement
*
Measurement functions: AC voltage, DC voltage, resistance, DC current, AC
current, continuity, diode, frequency.
* The
measurement display has a reading of 6000 digits, and the basic accuracy is
0.2%.
*
Measurement rate: 20 times per second in fast mode and 5 times per second in
slow mode.
* True RMS
measurement for AC, with a measurement bandwidth of 20Hz to 1000Hz.
* Loop
detection function, which can supply power to the 24V loop and measure the
current simultaneously.
* VFC
variable frequency voltage measurement function.
* Manual
or automatic range selection is available, and the measured value can be held
on the display.
* Relative
value measurement (REL_%)
Basic
Features of Analog Output
* The
highest output accuracy is 0.2%, and the output display has 5 digits.
* Output
functions: DC voltage, DC current, frequency, and the SIMULATE function to
simulate a transmitter.
* When outputting DC current, both the mA value and the % value can be displayed simultaneously;
current output functions with manual steps of 25% and 100%,
automatic steps, and automatic ramping.
* An
internal 24V loop power supply is provided.
Large-screen
LCD dual display with a white LED backlight.
LED
flashlight lighting.
Technical
specification
Safety and conformity
|
Overload
protection |
V~COM terminal：AC1000V/10 seconds mAV terminal：630mA/250V quick-acting fuse |
|
Regulatory compliance |
IEC61010-1 (CAT Ⅳ 600V, CATⅢ1000V,
pollution level Ⅱ） |
|
Electromagnetic
compatibility |
Consistent with Group 1 and Class B of IEC61326-1 |
|
Surge protection |
8kV(As per IEC61010.1-2001) |
|
Authentication mark |
CE |
|
Quality standard |
It is developed, designed and
produced according to ISO 9001. |
General
characteristics
|
Display |
Digit: 4-digit
display for measurement, 5-digit display for output |
|
Display refreshing |
Fast (F): 20times/second; slow (S): 5 times/second |
|
Temperature and humidity range for work |
0～40 ºC, relative
humidity ≤85% (without moisture condensation) |
|
Temperature and humidity range for storage |
-20 ºC～60 ºC, relative humidity below 90% (without
moisture condensation) |
|
Temperature and humidity range for guaranteed precision |
23±5ºC,
relative humidity below 75% (without moisture condensation) |
|
Temperature
factor |
0.1× basic
precision / ℃ (temperature
range: <18℃or>28℃) |
|
Application environment |
Indoors, outdoors (non-watertight), altitude
of 0～2000m |
|
Indication of outrange |
OL |
|
On-off / open-circuit test |
Buzzer beeps indicate the resistance reading is lower than the
threshold, or an open circuit |
|
Battery type |
Three 1.5V (LR6) alkaline batteries |
|
Service life of batteries |
When using alkaline batteries Measuring any parameter: about 100mVA Loop detection function: about 200mVA DC current output (SIMULATE): about 200mVA DC current output (SOURCE) 20mA (1000Ω load): about 1000mVA |
|
Battery low |
It is indicated with a battery mark.
|
|
Automatic shutdown |
The meter is automatically shut down
after about 5 minutes of no operation. The time can be adjusted. |
|
Warm-up time |
10 minutes |
|
Close the meter enclosure calibration |
No need for internal adjustment |
|
Battery cover |
For battery replacement, without influencing meter calibration
|
|
Size |
185（L）×90（W）×54（D）mm |
|
Weight |
About 500g |
|
Calibrating period |
1year |
Precision is affirmedwithin one year after
calibration, with work temperature of 23±5ºC and relative humidity of 75%.
A precision range can be marked as:± ([reading%] + count) (Note: “count” means
increased or decreased number at the lowest significance digit)
Detailed precision indexes for measurement
|
Function |
Range |
Measuring scope |
Resolution |
Precision |
|
DC voltage DCV |
60mV |
-60.00mV～60.00mV |
0.01mV |
0.2%+4 |
|
600mV |
-600.0mV～600.0mV |
0.1mV |
0.2%+4 |
|
|
6V |
-6.000V～6.000V |
0.001V |
0.2%+4 |
|
|
60V |
-60.00V～60.00V |
0.01V |
0.2%+4 |
|
|
600V |
-600.0V～600.0V |
0.1V |
0.2%+4 |
|
|
1000V |
-1000V～1000V |
1V |
0.2%+4 |
|
|
AC voltage ACV |
6V |
0～6.000V |
0.001V |
0.5%+40(<400Hz） 5%+40(>400Hz） |
|
60V |
0～60.00V |
0.01V |
0.5%+4 |
|
|
600V |
0～600.0V |
0.1V |
0.5%+4 |
|
|
VFC |
600V |
0～600.0V |
0.1V |
4%+10 |
|
OHM |
600Ω |
0～600.0Ω |
0.1Ω |
0.2%+4 |
|
6kΩ |
0～6.000kΩ |
0.001kΩ |
0.2%+4 |
|
|
60kΩ |
0～60.00kΩ |
0.01kΩ |
0.2%+4 |
|
|
600kΩ |
0～600.0kΩ |
0.1kΩ |
0.5%+4 |
|
|
6MΩ |
0～6.000MΩ |
0.001MΩ |
1%+4 |
|
|
60MΩ |
0～60.00MΩ |
0.01MΩ |
2%+4 |
|
|
DC current DCI |
60mA |
-60.00mA～60.00mA |
0.01mA |
0.2%+4 |
|
600mA |
-600.0mA～600.0mA |
0.1mA |
0.2%+4 |
|
|
AC current ACI |
60mA |
0.00mA～60.00mA |
0.01mA |
0.5%+10 |
|
600mA |
0.0mA～600.0mA |
0.1mA |
0.5%+10 |
|
|
Frequency FREQ |
10Hz |
0～9.9999Hz |
0.0001Hz |
0.02%+4 |
|
100Hz |
0～99.999Hz |
0.001Hz |
0.02%+4 |
|
|
1000Hz |
0～999.99Hz |
0.01Hz |
0.02%+4 |
|
|
10kHz |
0～5.0000kHz |
0.0001kHz |
0.02%+4 |
|
|
DUTY |
10%～90% |
0.1% |
1% |
|
|
Diode |
2V |
|
0.0001V |
1%+10 |
|
On-off test |
600Ω |
|
0.1Ω |
≤50ΩBB |
|
1. AC measurement:
true RMS, 20Hz～1kHz, VFC measurement: true RMS, 20Hz～200Hz,range of 10%～110%; 2. The
thermocouple measurement adopts the thermometric scale of ITS-90. The
precision doesn’t include errors in cold-end compensation, or
influences of thermo-electrical potential. 3. The thermal
resistance measurementadopts the thermometric scale of Pt100-385. The
precision doesn’t include errors due to lead resistance. 4.
During frequency measurement, for signals with frequency
lower than 3Hz, relevant readings will be zero. |
||||
Detailed precision indexes for output
|
Function |
Range |
Output setting scope |
Resolution |
Precision |
Remark |
|
DC voltage DCV |
100mV |
-10.00～110.00mV |
10μV |
0.2%+4 |
Maximum
output current 0.5mA |
|
1000mV |
-100.0～1100.0mV |
100μV |
0.2%+4 |
Maximum
output current 2mA |
|
|
10V |
-1.000～11.000V |
1mV |
0.2%+4 |
Maximum
output current 5mA |
|
|
DC current DCI |
30mA |
0.000～33.000mA |
0.001mA |
0.2%+4 |
20mA,
maximum load 1kΩ 30mA,
maximum load 600Ω |
|
Simulated
transmitter SIMULATE |
-30mA |
0.000～-33.000mA |
0.001mA |
||
|
Loop power LOOP |
24V |
|
|
±10% |
Maximum
output current 35mA |
|
Frequency FREQ |
100Hz |
1.0Hz～110.0Hz |
0.1Hz |
0.2%+2 0.2%+2 |
Rectangular
wave, duty cycle of 50% 1～11Vp-p |
|
1kHz |
0.100kHz～1.100kHz |
1Hz |
|||
|
5kHz |
1.00kHz～6.00kHz |
10Hz |
|||
|
10kHz |
6.0kHz～11.0kHz |
100Hz |
|||
| 1.Load characteristics: capacitive loads ≥0.01uF. |
|||||
Input
characteristics
|
Function position |
Input impedance (nominal value) |
|||||
|
V |
10MΩ，<100pF |
|||||
|
mV |
>2.5GΩ |
|||||
|
mA |
1Ω |
|||||
|
|
Common-mode rejection ratio |
Series-mode rejection ratio |
||||
|
DCV、DCmV |
80dB (dc to 50Hz / 60Hz/1KΩ) |
40dB (50Hz / 60Hz) |
||||
|
ACV、ACmV |
60dB (dc to 50Hz / 60Hz/1KΩ) |
|
||||
|
|
Open-circuit voltage |
Full-scale voltage |
||||
|
Ohm |
2.5V |
2.2V |
||||
|
Diode |
< 3.5V |
2.2V |
||||
|
On-off |
< 1V |
600mV |
||||
|
|
Typical short-circuit current |
|||||
|
Ohm |
600Ω |
6kΩ |
60kΩ |
600kΩ |
6MΩ |
60MΩ |
|
0.8mA |
0.2mA |
20μA |
2μA |
0.2μA |
< 0.1μA |
|
|
Diode |
0.2mA (typical value) |
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Packing list:
Test leads, a pair;
Fuse, 2pcs;
PDF Manual;
(Battery is not included)