ABB 695FI Gebrauchsanweisung - Seite 12

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DISASSEMBLY AND REASSEMBLY

To remove the internal meter proceed as follows:

1) Remove the field indicator cover

2) Unplug the meter (see fig. 12)

3) Replace it immediately by plugging another meter or

install the proper link between the meter connections.

NOTE - This operation is important for Intrisic

Safe loop application, as, with the meter removed,

the voltage drop accross the field indicator can rise

up to 4 V.

4) If another meter has been fitted (see Fig. 12), rotate it,

as required for viewing convenience.

The meter can rotate, in 15° steps, 90° clockwise and

255° counterclockwise: further rotation causes damage

of the meter stop or of the "banana" connections and

should be avoided.

5) Check that the cover O-ring gasket is properly in place

and screw on the cover.

Fig. 12 - Meter connection

PERFORMANCE SPECIFICATIONS

Stated at ambient temperature of 23°C ± 3K (75°F ± 5), rela-

tive humidity of 50% RH ± 20% and atmospheric pressure

Indication accuracy

• analog indicator : ± 2% fsd

• CoMeter and ProMeter :

- digital ± 0.10% of max span(16 mA) ± 1 digit

- analog (bargraph) : 10%

Ambient temperature

Total effect per 1 K (1.8 °F) change between the limits of

-20 and +80°C (-4 and +176 °F).

CoMeter and ProMeter: ± 0.15% of max span (16 mA)

EMI/RFI

Total effect : ± 0.10% from 20 to 1000 MHz and for field

strengths up to 10 V/m when instrument is properly in-

stalled.

- 12 -

Terminal block

Meter

Banana plug

FUNCTIONAL SPECIFICATIONS

Input range: 4 to 20 mA nominal

Operating range:

3.6 to 22 mA (for CoMeter ensuring HART functionality)

Maximum overload (for 2 minutes)

- Analog indicator : 150% of input range

- CoMeter and ProMeter: 110 mA (23 mA indication).

A current less than 3.4 mA will blank the display

Voltage drop

- analog indicator : 0.2 Vdc

- ProMeter : 2Vdc

- CoMeter

• less than 2.6 V dc @ full scale and 20°C

• 2.8 Vdc @ max temperature (including HART

modulation)

Meter/indication range

- CoMeter and ProMeter

• 5-digit (± 99999 counts) with 7.6 mm. high (5/16 in),

7-segment numeric characters plus sign and digital

point

• 10-segment bargraph display

• 7-digit with 6 mm. high (1/4 in), 14-segment alphanu-

meric

Temperature limits

• Ambient (is the operating limit)

- analog indicator: -25 to +85°C (-13 to +185°F)

- CoMeter and ProMeter : -20 to +70°C (-4 to +158°F)

Lower limit can be down to -40 (-40) keeping loop

integrity and without meter damage (the display will

be blank)

• Storage

-40 to +85°C (-40 to +185°F)

Rotate

Relative humidity

• Reference: 60% RH ±25%

• Operative, transportation and storage limits :

0 and 100% RH condensing permissible

EMI/RFI (SAMA PMC 33.1)

• Operative limits : Class 3 abc, field strengths up to

30V/m

1000 MHz)

Update time

• Analog indicators : 0.5 sec

• CoMeter and ProMeter : 0.7 sec

Resolution for CoMeter and ProMeter

± 0.025% (12-bit conversion)

characters.

(Frequency range: 20 to