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