Tacho-Indicator EA xxx
The tacho-indicator EA xxx from HORN is the ultimate solution for remote tachometry. The analog display is designed to meet the demands of even the most challenging operating conditions, our robust moving coil instruments deliver unparalleled accuracy while requiring minimal maintenance.
Key features include:
For sales or commercial inquiries please contact us at marine@insatech.com.
Two kinds of tacho indicators are available:
To enable remote tachometry, the use of tacho indicators alongside generators is essential.
HORN tacho-indicators are sturdy moving coil devices known for their exceptional precision, having proven their reliability in challenging operating environments while requiring minimal maintenance.
Designed specifically for outdoor areas exposed to various weather conditions, particularly for marine applications, these indicators come in a weatherproof and corrosion-resistant light alloy casing.
They can be conveniently flush-mounted or built onto surfaces.
The tacho indicators are specifically crafted for external locations that are exposed to the elements, making them ideal for shipboard use. Encased in a weatherproof and seawater-resistant light alloy casing, they are built to withstand harsh weather conditions and provide reliable performance in any environment.
One of the key features of the tacho-indicators is their versatility in mounting options. Whether you prefer a flush or built-on installation, the indicators can be seamlessly integrated into your existing setup, allowing for effortless integration and enhanced usability.
Backed by years of field-proven reliability, the Tacho-Indicators have earned a reputation for their exceptional performance and durability. Their high accuracy ensures precise tachometry readings, providing you with invaluable data for efficient monitoring and control.
| Technical Specifications Tacho-Indicator EA | |||||||||||||||||||
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| Movement | Moving coil meter movements, current consumption 1 mA at full needle deflection; toe bearing and shock-proof pivot bearing resp., or toe bearing with spring-mounted jewels for extremely severe operating conditions |
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| Needle- Scale | Needle black, dial white; graduations, inscription and figures conform to DIN 43802 |
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| Calibration | Normally carried out with reference to a HORN tacho-generator; measuring range and measured quantity can be selected at choice, i.e. any indicating (measuring) range can be assigned to any speed range of the generator shaft |
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| Reading accuracy | ± 1% related to the scale length. With a wire cross section up from 2 x 0.75 mm2 , line lengths up to |
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| Temp. range | -20°… +45° C |
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| Installation position | If not specified otherwise, indicators are calibrated for vertical mounting (position of the dial). Other mounting positions as per drawing below will be considered, provided the order specifies the angle of inclination of the scale with reference to the horizontal plane |
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| Finish | Grey structure lacquer, with a seawater- and acid-proof enamel |
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| Enclosure | IP 66 |
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| Electrical connection | Flat terminals to DIN 41000, flood-protected (enclosure IP 66). For the shipbuilding industry, the indicators are supplied with a screw cable gland M 24x1.5 (DIN 89280) instead of the Pg 7 gland |
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| Type approval | Germanischer Lloyd |
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| Scale illumination | 24, 115 or 230 V; EA 106 ...available without scale illumination only, EA 107... can be operated with 24V only. The dial is transparent. The illumination can be adjusted or switched off by means of a dimmer DW 85 e (in separate box) or WIXG 122/... K (without box). The scale of indicators with clamp fixing can be illuminated indirectly by light slots |
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| Calibration | To characteristic curve or table of customers; reading accuracy: ± 1.5 % related to full scale length |
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| Adjustment | Should a readjustment of the indication be required, then this can be achieved via a potentiometer (DW) accessible on the rear of the casing. The potentiometer can be provided with a locking device (DWf) to prevent a displacement after the adjustment |
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| Tropical protection | All indicators can be manufactured in tropicalized execution upon request |
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| Special versions | Cover glass: non-reflecting or safety compound glass black dial with white graduations; pointer tip, main graduations, figures and measured quantity phosphorescent, scale ground after- glowing; graduations, figures, pointer and measured quantity black, scale with precise graduation, single or dual graduation; scale stretched in the initial or final range, zero hushed up to 25 % of final value (for 240° needle-deflection); dual or multiple scale by special calibration or additional graduation, coloured markings at any place of the scale, coloured sectors or bands, additional captions on scale |
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| Technical Specifications Tacho-Indicator Form B, rectangular | |||||||||||||||||||
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| Movement | Moving coil meter movements, current consumption 1 mA at full needle deflection, toe bearing |
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| Needle | Needle black |
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| Scale | Changeable scale, dial white; graduations, inscription and figures conform to DIN 43802. |
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| Calibration | Normally carried out with reference to a HORN tacho-generator; measuring range and measured quantity can be selected at choice, i.e. any indicating range can be assigned to any speed range of the generator shaft. Furthermore it is possible to calibrate the indicator based on customer’s requirements or to the input values for |
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| Adjustment | Should a readjustment of the indication be required, then this can be achieved via a potentiometer (DW) accessible on the rear of the casing |
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| Reading accuracy | ± 1,5% relative to the scale length: With a wire cross section up from 2x0.75 mm2 , line lengths up to 100m will not affect the indication. The temperature drift will not exceed 0.2% for each 10 °C change for temperature. These values are conform to classification 1.5/0.2 (VDE0410). |
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| Temperature range | -20°C ... +70°C |
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| Installation position | If not specified otherwise, indicators are calibrated for vertical mounting (position of the dial). Other mounting |
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| Cover glass | non-reflecting mineral glas |
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| Front frame | black acc. to DIN 43718 |
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| Housing | plastic material, dimension acc. to DIN 43700 |
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| Protection degree | Housing IP 54 |
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| Electrical connection | Terminals to DIN 46206 (enclosure IP00) |
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| Type approval | available |
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| Weight: |
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| Scale length |
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| Scale illumination | 24V DC, adjustable by means of a dimmer (on request) |
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