OML 343AC
3 ½ digit AC VOLTMETER - AMMETER
Type OML 343AC is an inexpensive 3 ½ digit panel programmable AC voltmeter - ammeter designed for simple applications with depth of the box of only 30 mm.
The instrument is based on a single-chip microcontroller with a true RMS converter, which ensure good accuracy, stability and easy operation of the instrument.
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3 ½ digit programmable projection
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range: 0…1/5 A; 0…60/300 mV; 0…24/50/120/250 V
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digital filters, tare, linearization
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size of DIN 96 x 48 mm
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power supply 10…30 VDC/24 VAC
Options
-
comparator
Input
AC
Range
menu selectable
0…1 A
> 30 mV
Input 5
0…5 A
> 150 mV
Input 5
0…60 mV
1,2 kOhm
Input 4
0…24 V
500 kOhm
Input 3
Input frequency
0…400 Hz
for amplitude from 8 V
for amplitude from 8 V
Measured variables
Voltage (Vrms)
Current (Irms)
Current (Irms)
External inputs
Number
1 input, on contact
Functions
| OFF | No function |
| HOLD | Stopping measurement (option: Display - Analog output - Limits) |
| TARA | Tare activation |
Projection
Display range
0…1999, single-coloured 7-segment LED
Display height
14 mm
Display colour
red, green
Signalizing LED
| 1 | Limit L1 (red) |
| T | Tare (green) |
Decimal point
menu adjustable - fixed or floating
Display brightness
menu adjustable, automatically
Settings
Control
The device is controlled and set by five buttons located behind the the rear lid
Selected functions can also be controlled via external inputs
Selected functions can also be controlled via external inputs
Menu
| LIGHT | contains only items necessary for basic device settings with password access |
| PROFI | Full device settings with password access |
| USER | User menu of any item, selected from LIGHT/PROFI. Access without password. |
OM Link
Company communication interface for operation, setting and update of device firmware
OM Link program is also designed for visualization and filing of meas. values from more instruments
OM Link program is also designed for visualization and filing of meas. values from more instruments
Instrument accuracy and functionality
Temperature coefficient
50 ppm/°C
Accuracy
0,3 % of range + 1 digit
(for projection 0…1999 and 5 measur./s)
(for projection 0…1999 and 5 measur./s)
Rate
0,5/1,2/2,5/5 measur./s
Overload capacity
2x; 10x (t < 30 ms) - not for > 250 V and 5 A
Linearization
linear interpolation in 25 points (only via OM Link)
Digital filters
| exponential mean | from 2…100 measurements |
| rounding | setting projection step for display |
Functions
| Tare | designed to reset display on non-zero input signal |
Watch-dog
reset after 500 ms
Calibration
at 25°C and 40 % r.h.
Comparators
Type
Digital, menu adjustable, contact connect. < 50 ms
Mode
| Hysteresis | switch. point, hysteresis band "Mez ± 1/2 Hys." and time (0 ... 99.9 s) determ. switching delay |
Output
1x relay, switch on contact (250 VAC/30 VDC, 3A)
1x open collector (30 VDC/100 mA)
1x open collector (30 VDC/100 mA)
Power supply
Power supply
10…30 VDC/24 VAC, ±10 %, PF > 0,4, I < 45 A/1 ms, isolated
Current draw
< 1,8 W/1,9 VA
Mechanical properties
Dimensions
96 x 48 x 30 mm (w x h x d)
Panel cutout
92 x 44 mm (w x h)
Material
Polycarbonate, non-inflammable UL 94 V-0
Operating conditions
Connection
terminal board, cable section < 1,5 mm2
Stabilization period
within 15 minutes after switch on
Operating temperature
-20°…60°C
Storage temperature
-20°…80°C
Protection class
IP 65 (front panel only)
El. safety
EN 61010-1, A2
Dielectric strength
2,5 kVAC within 1 min. between pow. supply and input
4 kVAC within 1 min. between input and relay output
4 kVAC within 1 min. between input and relay output
Insulation resistance
for polution degree II, measuring cat. III.
| power supply | 300 V (ZI)* |
| input, output | 300 V (ZI)* |
EMC
EN 61326-1
Images
Dimensions and installation
Connection
Datasheets
| File name | File type | Version | Language | Download |
|---|---|---|---|---|
|
Datasheet OML343
Datasheet OML343
Datasheet OML343
Katalogový list OML343
|
PDF
|
2015.1 |
|
Download |
|
Datasheet OML343
Datasheet OML343
Datasheet OML343
Katalogový list OML343
|
PDF
|
2014.2 |
|
Download |
|
Datasheet OML343
Datasheet OML343
Datasheet OML343
Katalogový list OML343
|
PDF
|
2014.1 |
|
Download |
|
Datasheet OML343
Datasheet OML343
Datasheet OML343
Katalogový list OML343
|
PDF
|
2013.2 |
|
Download |
| Datasheet OML343 |
PDF
|
2013.1 | ru | Download |
|
Datasheet OML343
Datasheet OML343
Datasheet OML343
Katalogový list OML343
|
PDF
|
2012.2 |
|
Download |
|
Datasheet OML343
Datasheet OML343
Katalogový list OML343
|
PDF
|
2010.1 |
|
Download |
|
Datasheet OML343AC
Datasheet OML343AC
Datasheet OML343AC
Katalogový list OML343AC
|
PDF
|
2020.1 |
|
Download |
| Katalogový list OML343 |
PDF
|
2012.1 | cs | Download |
|
Datasheet OML343AC
Katalogový list OML343AC
|
PDF
|
2026.2 |
|
Download |
|
Datasheet OML343AC
Katalogový list OML343AC
|
PDF
|
2023.1 |
|
Download |
User manuals
| File name | File type | Version | Language | Download |
|---|---|---|---|---|
|
Operating instructions OML343AC
Návod OML343AC
|
PDF
|
2012.1.0 |
|
Download |
Certificates
| File name | File type | Version | Language | Download |
|---|---|---|---|---|
|
Certificate EU_Declaration_OML343
Certifikát EU_Prohlaseni_OML343
|
PDF
|
2022 |
|
Download |
|
Certificate Declaration_17050_OML343
Certifikát Prohlaseni_17050_OML343
|
PDF
|
2022 |
|
Download |
Firmware
| File name | File type | Version | Language | Download |
|---|---|---|---|---|
| OML343AC 62-002 OML343AC |
HEX
|
2012 | xx | Download |
ISOLATED TRANSDUCER • USB < > OM INSTRUMENTS
Small compact transducer OM LINK USB with cable ensures safe and comfortable galvanically isolated connection between your computer and ORBIT MERRET instruments.