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

Call: 877-866-8500

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Panel meters are measuring instruments that display the value of an applied input signal. These are usually current, voltage or resistance signals. Input types can include thermocouples, potentiometers and load cells. Many of our models also provide set points, relays, analog and/or digital outputs as well as programability.

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