- 12 -
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.
FUNCTIONAL SPECIFICATIONS
Terminal block
Banana plug
Meter
Fig. 12 - Meter connection
V
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.
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
characters.
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)
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
(Frequency range: 20 to
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)
Rotate
