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Testomat 808 Water Hardness Monitor

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Testomat 808 Water Hardness Monitor


Testomat 808Indicator Liquids
Product Manual


Testomat 808 Water Hardness monitorTestomat®  808 is the compact analyser for online measurement of water hardness on the principle of “limit value monitoring with colour change” and is the direct successor to Testomat® F-BOB whose tried and tested properties have been incorporated:

  • Simplicity
  • High serviceability
  • Reliability
  • Longevity

In addition to this,  Testomat®  808 has been  continuously further developed to meet the current high demands of water analysis. Testomat®  808 can be used in numerous areas where water hardness needs to be checked. These include, for example:

  • Reverse osmosis plants
  • Boiler feed water supply
  • Soft water for commercial purposes
  • Pure water production plant
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Testomat 808 Product Features

  • Self-cleaning measuring chamber
  • Automatic measurement with low water consumption
  • State-of-the-art indicator pump system
  • Direct error display
  • Indicator quantity display
  • External flush valve control
  • Limit value evaluation / External control
  • Alarm processing
  • Internal and external flushing via manual control
  • 72 hours of unsupervised operation possible
  • Selection between two indicator bottle sizes: 100 ml / 500 ml
  • 4-20 mA interface for defined status and error messages
  • RS 232 interface for firmware updates


Technical Data

Power supply: (24 / 115)** / 230 V, 50 – 60 Hz

Instrument protection: 230 – 240 V: T0.1 A

Instrument protection: 115 V: T0.2 A

Instrument protection: 24 V: T0.8 A

Mains protection for consumers: max. 4 A (n , l)

Power consumption: max. 16 VA, without external load

Protection class: I

Degree of protection: IP 54

Conformity: EN 61000-6-2,

EN 61000-6-4, EN 61010-1

Ambient temperature: 15 - 45°C

Measuring range: Due to indicator selection, it is possible to determine limit values for the residual hardness of 0.02 – 10.0 °dH*

Current interface: Output of defined values

(5, 8, 11, 14, 17, 20 mA) for displaying status and error messages, max. load 500 Ohms

Contact load relay: 230V / 4A AC ohm resistive load

Dimensions: W x H x D = 364 x 314 x 138 mm

Weight: 4,350 g

Mains water supply

Operating pressure: 1 to 8 bar / 1 x 105 to 8 x 105

Pa (a pressure reducer should be used for the 4 to 8 bar range, lower pressures available on request)

Water temperature: 10 – 40°C (a KCN type cooler should be installed in the branch line for temperatures above 40°C)

Water inlet and outlet: Opaque hose with an external diameter of 6 mm