OM 402 SPECIFICATIONS
INPUT TYPES AND RANGES
OM 402 is a multifunction instrument available in following types and ranges:
type UNI (universal)
- DC: ±60, ±150, ±300 and ±1 200 mV
- PM: 0 to 5 mA, 0 to 20 mA, 4 to 20 mA as well as ±2 V, ±5 V, ±10 V or ±40 V
- OHM: 0 to 100 Ω, 0 to 1 Ω, 0 to 10kΩ, 0 to 100 kΩ or Auto range
- RTD: Pt 50, Pt 100, Pt 500 or Pt 1,000
- Cu: Cu 50 or Cu 100
- Ni: Ni 1,000 or Ni 10,000
- T/C Types: J, K, T, E, B, S, R, N or L
- DU: Linear potentiometer (min. 500 Ω)
type UNI, Option A
- DC: ±0.1 A, ±0.25 A, ±0.5 A, ±2 A, ±5 A as well as ±100 V, ±250 V or ±500 V
type UNI, Option B (expansion bay has three inputs)
- PM: 3x 0 to 5 mA, 0 to 20 mA, 4 to 20 mA as well as ±2 V, ±5 V, ±10 or ±40 V
- type LC
- LC: 1 to 4 mV/V, 2 to 8 mV/V or 4 to 16 mV/V
type PWR
- input U: 0 to 10 V, 0 to 120 V, 0 to 250 V or 0 to 450 V
- input I: 0 to 60 mV, 0 to 150 mV, 0 to 300 mV as well as 0 to 1 A, 0 to 2.5 A or 0 to 5 A
PROJECTION
Display: -99999 to 999999, red or green 14-Segment LED, digit height is 14 mm, -999 to 9999, red/green/orange 7-segment LED, height 20 mm
Description: last two characters on the display may be used for
description of measured quantities (adjustable in the menu)
Decimal point: setting - in menu
Brightness: setting - in menu
INSTRUMENT ACCURACY
TK: 50 ppm/∞C
Accuracy: ±0.1 % of range + 1 digit (for projection 9999 and 5 meas./s)
±0.15 % of range + 1 digit RTD, T/C
±0.3 % (0.6/0.9 %) of range + 1 digit PWR
Accuracy of cold junction measurement: ±1.5¬∞C
Rate: 0.1 to 40 meas./s, 0.5 to 5 meas./s (PWR)
Overload capacity: 2x; 10x (t < 30 ms) - not for > 250 V and 5 A
Measuring modes (PWR): voltage (VRMS), current (ARMS), real power (W),
frequency (Hz) and with calculation of Q, S, cos fi
Linearization: by linear interpolation in 50 points
Digital filters: Exp./Floating/Arithmetic average, Rounding
Functions: offset, Min/max value, Tare, Peak value, Mat. operations
Ext. control: HOLD, LOCK, Tare, Min/Max
Data record: measured data record into instrument memory
RTC - 15 ppm/∞C, time-date-display value, < 266k data
FAST (UNI) - display value, < 8k data
Resolution (RTD, T/C): 1 ∞/0.1 ∞/0.01 ∞C
Watch-dog: reset after 0.4 s
OM Link: Company communication interface for operation, setting and
update of instruments
Calibration: at 25 ∞C and 40 % r.h.
RELAYS
Type: digital, setting in menu, contact switch < 30 ms
Limits: -99999 to 999999
Hysteresis: 0 to 999999
Delay: 0 to 99.9 s
Output: 2x relays Form A (250 VAC/30 VDC, 3 A)
and 2x Form C relays (250 VAC/50 VDC, 3 A), 2x/4x open collectors,
2x SSR, 2x bistable relays
DATA OUTPUT
Protocol: ASCII, MESSBUS, MODBUS - RTU, PROFIBUS DP
Data format: 8 bit + no parity + 1 stop bit (ASCII)
7 bit + even parity + 1 stop bit (Messbus)
Rate: 600 to 230,400 Baud, 0.0096 to 12 Mbaud (PROFIBUS)
RS 232: isolated
RS 485: isolated, addressing (max. 31 instruments)
ANALOG OUTPUT
Type: isolated, programmable with 16-bit D/A converter, type and range
are selectable in programming mode
Non-linearity: 0.1 % of range
TK: 15 ppm/∞C
Rate: response to change of value < 1 ms
Ranges: 0 to 2 V, 0 to 5 V, 0 to 10 V as well as ±10 V, 0 to 5 mA, 0 to 20 mA or 4 to 20 mA
(comp. < 600 Ω/12 V or 1 000 Ω/24 V)
EXCITATION
Adjustable: 5 to 24 VDC/max. 1.2 W
Fixed: 10 VDC, max. load 80 Ω LC
POWER SUPPLY
10 to 30 V AC/DC, ±10 %, max. 13.5 VA, PF ‚â• 0.4, ISTP< 40 A/1 ms
80 to 250 V AC/DC, ±10 %, max. 13.5 VA, PF ≥ 0.4, ISTP< 40 A/1 ms
Power supply is protected by a fuse inside the instrument
MECHANICAL PROPERTIES
Material: Noryl GFN2 SE1, incombustible UL 94 V-I
Dimensions: 96 x 48 x 120 mm
Panel cutout: 90.5 x 45 mm
OPERATING CONDITIONS
Connection: connector terminal board, section < 1.5/2.5 mm2
Working temperature: -20 ∞ to 60 ∞C
Storage temperature: -20 ∞ to 80 ∞C
Cover: IP64 (front panel only)
El. safety: EN 61010-1, A2
Dielectric strength: 4 kVAC after 1 min between supply and input
4 kVAC after 1 min between supply and data/analog output
4 kVAC after 1 min between supply and relay output
2.5 kVAC after 1 min between input and data/analog output
Insulation resistance: for pollution degree II, measuring cat. III.
Power supply > 670 V (ZI), 300 V (DI)
input, output, Exc. > 300 V (ZI), 150 V (DI)
EMC: EN 61326-1
Seismic capacity: IEC 980: 1993, par. 6
SW validation (UNI): Class B, C in compliance with IEC 62138, 61226