Loop Powered indicators


Beka Loop Powered Digital Indicators for Process Control

Provide Process Information from 4-20mA signals in Hazardous Areas & Extreme Environments

  • Large, non-multiplexed digital displays
  • Numerals up to 34mm high
  • Full 4 & 5 digit readout, plus bar graph on selected models*
  • High contrast and wide angle viewing
  • Less than 1.2V drop in 4-20mA loop
  • -40°F to +158°F / -40°C to +70°C operating temperature
  • FM approvals, ATEX and IECEx certifications, for Ex applications
  • Field & panel mounting models
  • Ingress protection up to IP66
  • Optional backlighting and alarm outputs
  • Square root extraction, tare, and linearisation
  • Internal calibration source
  • Conformally coated printed circuit boards for reliability

* Vertical bar graph models BA326C & BA526C have 4-½ digit readout

New fourth generation ‘E’ Series loop powered 4-20mA indicators include models for field and panel mounting in both safe and hazardous locations. The latest LCD technology enables full 4-digit readout with up to 34mm high numerals, or 5-digit readout with up to 29mm numerals plus a bar graph. High contrast and wide viewing angles provide good visibility under adverse lighting conditions, and a wide operating temperature range satisfies worldwide environmental needs.Included and optional features provide internal calibration source, alarm outputs, display backlighting, lineraisation, square root extraction, and tare calculation.

Intrinsically safe versions have FM approval for both the U.S. and Canada, plus ATEX for Europe, and IECEx for other international destinations. The FM approval includes use as non-incendive devices in Division 2 locations in current-limited loops without the need for a safety barrier. Similarly, Type nA models are ATEX and IECEx certified for use in Zone 2 locations.

All Beka indicators are calibrated to customer requirements free of charge and can be labeled to show units of measurement, tag number, and application.

Display Readability Display Formatting
No backlight
Display readable in daylight.
Maximum display for 4-digit indicators.
Backlight, loop powered
Display readable in poor lighting conditions.
Maximum display for 5-digit indicators.
Backlight, separately powered
Display contrast enhanced in all lighting conditions.
Backlight colour is orange on Model BA326C only.
Maximum display for 4-½ digit readout
used on Model BA326C & BA526C only.
Duty / Service
Intrinsically Safe, Panel Mounting
Model No.

Shown with backlighting


Shown with backlighting

Shown with backlighting

Legacy Status ⇓ Replaces BA307C ⇓ Replaces BA308C ⇓ Replaces BA327C ⇓ Replaces BA328C ⇓ BA326C Replaces BA326B
Front Face DIN Size
96 x 48 mm
144 x 72 mm
96 x 48 mm
144 x 72 mm
48 x 144 mm
Display Format
4 digits, 15mm high
4 digits, 34mm high

5 digits, 11mm high,

plus bar graph

5 digits, 29mm high,

plus bar graph

Two 100 segment bar graphs 95mm high,

plus 4-½ digit,

5.5mm high readout

Ingress Protection
Front IP66, rear IP20
Front IP65, rear IP20
North America,Factory Mutual

USA & Canada:

Entity IS / I / A, B, C, D / T4 Ta = 70°C

I / 0 / AEx ia IIC / T4 Ta = 70°C

Non incendive NI / I / 2 / ABCD / T4 Ta = 70°C – NIFW

I / 2 / IIC / T4 Ta = 70°C – NIFW

USA only:

Entity Cl I Div. 1

Gps A, B, C & D

Nonincendive Cl I Div. 2

Gps A, B, C & D

Europe, ATEX

Gas: Group II, Category 1G, Ex ia IIC T5 Ga, -40°C ≤ Ta +70°C

Dust: Group II, Category 1D, Ex ia IIIC T80°C Da IP20, -40°C ≤ Ta +70°C

Group II Category 1G

EEx ia IIC T5

Other Regions, IECEx

Gas: Ex ia IIC T5 Ga, -40°C ≤ Ta +70°C

Dust: Ex ia IIIC T80°C Da IP20, -40°C ≤ Ta +70°C

Ex ib IIC T5
Hazloc, Intrinsically Safe, Compact Field Mounting  
Model No. BA304E BA324E BA304G BA324G


Legacy Status Replaces BA304C/D Replaces BA324C/D
Mounting & Enclosure Field 141 x 212 Field 122 x 120
Display Format    
  4 digits, 34mm high 5 digits, 29mm high, plus bargraph 4 digits, 34mm high 5 digits, 29mm high, plus bargraph
Ingress Protection IP66
USA ETL & Canada cETL,Intrinsic Safety        FM and cFM certification optional Class I, Div 1, Gp A, B, C, D T5 (USA & Canada)
Class I, Zone 0, AEx ia IIC T5 Ga (USA)
-40°C ≤ Ta ≤ 70°C
Class II, Div 1, Gp E, F, G. Class III, Div 1 (USA & Canada)
Zone 20 AEx ia IIIC T80°C Da (USA)
-40°C ≤ Ta ≤ 60°C
Ex ia T5 Ga -40°C ≤Ta ≤ 70°C (Canada)
Ex ia IIIC Da -40°C ≤ Ta ≤ 60°C (Canada)
Europe, ATEX   Group II Category 1G Group II Category 1G
Ex ia IIC T5 Ga -40°C ≤ Ta ≤ +70°C Ex ia IIC T5 Ga -40°C ≤ Ta ≤ +70°C
Group II Category 1D Ex ia IIIC T80°C Da IP66, -40°C ≤ Ta ≤ +70°C
USA ETL & Canada cETL, Non incendive    FM and cFM certification optional Class I, Div 2, Gp A, B, C, D T5
Class II, Div 2, Gp F, G
Class III, Div 2
-40°C ≤ Ta ≤ 70°C
International, IECEx  Ex ia IIC T5 Ga -40°C ≤ Ta ≤ +70°C Ex ia IIC T5 Ga -40°C ≤ Ta ≤ +70°C
Ex ia IIIC T80°C Da IP66 -40°C ≤ Ta ≤ +70°C
Alarms Optional
Backlight, which may be loop or separately powered Optional
External push buttons Optional Standard
Escutcheon scale & tag labeling Optional Optional, Slide- In
Etched stainless steel legend plate Optional



If you need to find a suitable Intrinsically Safe Interface to drive any of these devices please contact Exloc  –  I.S. Interface


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